Technical Specification IQ24xxxHZXxx 18-36V 50V Continuous Input Transient Input 5.0-50V 504W 2250V dc Half-brick Outputs Max Power Isolation DC-DC Converter The InQor Half-brick converter series is composed of nextgeneration, board-mountable, fixed switching frequency dcdc converters that use synchronous rectification to achieve extremely high power conversion efficiency. Each module is supplied completely encased to provide protection from the harsh environments seen in many industrial and transportation applications. IQ2 DC-D 4050HZ 18-3 C CONVE C 6 0 NR A 6V RTER -G IN 5.0 VO UT @ 6 0A Operational Features • • • • • High efficiency, 94% at full rated load current Operating input voltage range: 18-36V Fixed frequency switching provides predictable EMI No minimum load requirement Optional: Active current share for parallel applications Protection Features Mechanical Features • • • • Industry standard Half-brick pin-out Size: 2.386" x 2.486" x 0.512" (60.60 x 63.14 x 13.00 mm) Total weight: 4.9 oz (139 g) Flanged baseplate version available • Input under-voltage lockout • Output current limit and short circuit protection • Active back bias limit • Auto-recovery output over-voltage protection • Thermal shutdown Control Features CONTENTS • On/Off control referenced to input side • Remote sense for the output voltage • Wide output voltage trim range of at least -50%, +10% Safety Features • • • • UL 60950-1/R:2011-12 Basic Insulation CAN/CSA-C22.2 No. 60950-1/A1:2011 EN 60950-1/A12:2011 RoHS compliant (see last page) Product # IQ24xxxHZXxx Phone 1-888-567-9596 Page No. Family Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Electrical Characteristics (5.0 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 4 Electrical Characteristics (12 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 6 Electrical Characteristics (15 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 8 Electrical Characteristics (24 Vout) & Figures . . . . . . . . . . . . . . . . . . . 10 Electrical Characteristics (28 Vout) & Figures . . . . . . . . . . . . . . . . . . . 12 Electrical Characteristics (40 Vout) & Figures . . . . . . . . . . . . . . . . . . . 14 Electrical Characteristics (50 Vout) & Figures . . . . . . . . . . . . . . . . . . . 16 Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Standards & Qualification Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Standard Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Flanged Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 1 Technical Specification IQ24xxxHZXxx IQ24 FAMILY ELECTRICAL CHARACTERISTICS (all output voltages) Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. Max. Units Notes & Conditions ABSOLUTE MAXIMUM RATINGS Input Voltage Non-Operating -1 50 V Continuous Operating 40 V Continuous Operating Transient Protection 50 V 1 s transient, square wave Isolation Voltage Input to Output 2250 V dc Input to Base-Plate 2250 V dc Output to Base-Plate 2250 V dc Operating Temperature -40 100 °C Baseplate temperature Storage Temperature -45 125 °C Voltage at ON/OFF input pin -2 18 V INPUT CHARACTERISTICS Operating Input Voltage Range 18 24 36 V 50V transient for 1 s Input Under-Voltage Lockout Turn-On Voltage Threshold 16.5 17.0 17.5 V Turn-Off Voltage Threshold 15.0 15.5 16.0 V Lockout Voltage Hysteresis 1.0 1.5 2.0 V Input Over-Voltage Shutdown V Not Available µF Recommended External Input Capacitance 470 Typical ESR 0.1-0.2 Ω Input Filter Component Values (C1\Lin\C2) 47\0.34\23 nF\µH\µF Internal values; see Figure D DYNAMIC CHARACTERISTICS Turn-On Transient Turn-On Time 24 35 40 ms Full load, Vout=90% nom; See Note 2 Output Voltage Overshoot 5 % Maximum Output Capacitance Auto-recovery Startup Inhibit Time 500 ms See Application Section ISOLATION CHARACTERISTICS Isolation Voltage (dielectric strength) See Absolute Maximum Ratings Isolation Resistance 30 MΩ Isolation Capacitance (input to output) 1000 pF See Note 1 TEMPERATURE LIMITS FOR POWER DERATING CURVES Semiconductor Junction Temperature 125 °C Package rated to 150 °C Board Temperature 125 °C UL rated max operating temp 130 °C Transformer Temperature 125 °C Maximum Baseplate Temperature, Tb 100 °C FEATURE CHARACTERISTICS Switching Frequency 230 240 250 kHz Insolation stage switching freq. is half this ON/OFF Control Off-State Voltage 2.4 18.0 V On-State Voltage -2.0 0.8 ON/OFF Control Application notes Figure A Pull-Up Voltage 5\15 5.5\18 V\V 28, 50Vout\All Other Vout Pull-Up Resistance 10\50 kΩ\kΩ 28, 50Vout\All Other Vout Over-Temperature Shutdown OTP Trip Point 125 °C Average PCB Temperature Over-Temperature Shutdown Restart Hysteresis 10 °C RELIABILITY CHARACTERISTICS Calculated MTBF (Telcordia) TR-NWT-000332 1.44 106 Hrs. Tb = 70°C Calculated MTBF (MIL-217) MIL-HDBK-217F 1.2 106 Hrs. Tb = 70°C Field Demonstrated MTBF 106 Hrs. See our website for details Note 1: Higher values of isolation capacitance can be added external to the module. Note 2: Additional 30ms between enable and start of Turn-On time for full-featured units to set up communication (N/A to 28V and 50V) Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 2 Technical Specification IQ24xxxHZXxx Family Figures (all output voltages) 120 Nominal Vout Typical Current Limit Inception Point Output Voltage (%) 100 80 Typical Output Voltage at Shutdown 60 40 Vin min Vin nom 20 Vin max 0 0 Common Figure 1: Startup Waveform (typical). Input voltage pre-applied, ON/ OFF Pin on Ch 2. 20 30 40 50 60 70 80 90 Load Current (%) 100 110 120 130 140 150 Common Figure 2: Output I-V Characteristics (output voltage vs. load current) showing typical current limit curves and converter shutdown points. 10,000.0 100,000.0 12 V 15 V 24 V Trim Resistance (kOhms) 5.0 V Trim Resistance (kOhms) 10 1,000.0 100.0 10.0 28 V 40 V 50 V 10,000.0 1,000.0 100.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 Increase in Vout (%) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Increase in Vout (%) Common Figure 3: Trim-Up Graph for 5.0 to 15V outputs. Common Figure 4: Trim-Up Graph for 24 to 50V outputs. Trim Resistance (kOhms) 10,000.0 1,000.0 All voltages 100.0 10.0 1.0 0.1 0.0 0 5 10 15 20 25 30 35 40 45 Decrease in Vout (%) Common Figure 5: Trim-Down Graph for all outputs. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 3 Input:18-36V Output:5.0V Current:60A Part No.:IQ24050HZx60 Technical Specification IQ24050HZx60 ELECTRICAL CHARACTERISTICS (5.0 Vout) Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. Max. Units Notes & Conditions INPUT CHARACTERISTICS Maximum Input Current 20 A No-Load Input Current 290 350 mA Disabled Input Current 3 5 mA Response to Input Transient 0.95 Input Terminal Ripple Current 500 V mA Recommended Input Fuse 40 A 5.070 V 100% Load, 18V Vin, trimmed up 10% See Figure 6 RMS Fast acting external fuse recommended OUTPUT CHARACTERISTICS Output Voltage Set Point 4.918 5.000 Output Voltage Regulation See Note 3 Over Line ±0.25 Over Load ±0.25 Over Temperature Total Output Voltage Range % % -125 125 mV 4.850 5.150 V Output Voltage Ripple and Noise 20 MHz bandwidth; see Note 1 Peak-to-Peak 135 RMS 32 Operating Output Current Range Output DC Current-Limit Inception Over sample, line, load, temperature & life 0 66.0 Full load mV Full load 60 A Subject to thermal derating 78.0 A Output voltage 10% Low Output DC Current-Limit Shutdown Voltage 2 V See Note 2 Back-Drive Current Limit while Enabled 6 A Negative current drawn from output 4 mA Negative current drawn from output 20,000 µF Vout nominal at full load (resistive load) Back-Drive Current Limit while Disabled 0 72.0 mV 3 Maximum Output Capacitance Output Voltage during Load Current Transient Step Change in Output Current (0.2 A/µs) 150 mV 50% to 75% to 50% Iout max Settling Time 500 µs To within 1% Vout nom 10 % Across Pins 8&4; Common Figures 3-5; 10 % Across Pins 8&4 6.4 V Over full temp range % See Figure 1 for efficiency curve Output Voltage Trim Range -50 Output Voltage Remote Sense Range Output Over-Voltage Protection 5.9 6.2 EFFICIENCY 100% Load 92 50% Load 93 % See Figure 1 for efficiency curve Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected]) Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50ms, then the unit will enter into hiccup mode, Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 4 Input:18-36V Output:5.0V Current:60A Part No.:IQ24050HZx60 100 40 95 35 90 30 Power Dissipation (W) Efficiency (%) Technical Specification 85 80 75 70 18Vin 25 20 15 10 24Vin 65 36Vin 24Vin 36Vin 0 60 0 6 12 18 24 30 36 Load Current (A) 42 48 54 0 60 Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 6 12 18 24 30 36 Load Current (A) 42 48 54 60 Figure 2: Power Dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 80 80 70 70 60 60 50 50 Iout (A) Iout (A) 18Vin 5 40 40 30 30 20 400 LFM (2.0 m/s) 10 200 LFM (1.0 m/s) 25 40 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 10 100 LFM (0.5 m/s) 0 400 LFM (2.0 m/s) 20 300 LFM (1.5 m/s) 55 70 100 LFM (0.5 m/s) 0 85 25 40 55 70 85 Ambient Air Temperature (°C) Ambient Air Temperature (°C) Figure 3: Thermal Derating (max output current vs. ambient air temperature) for encased converter without heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 4: Thermal Derating (max output current vs. ambient air temperature) for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 5: Output Voltage Response to Step-Change in Load Current (50%75%-50% of Iout(max); dI/dt = 0.2A/µs). Load cap: 15µF tantalum cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Iout (20A/div). Figure 6: Output Voltage Response to Step-Change in Input Voltage (250 V/ ms), at Max. load current. Load cap: 100µF electrolytic cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Vin. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 5 Input:18-36V Output:12V Current:42A Part No.:IQ24120HZx42 Technical Specification IQ24120HZx42 ELECTRICAL CHARACTERISTICS (12.0 Vout) Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. Max. Units Notes & Conditions INPUT CHARACTERISTICS Maximum Input Current 33 A No-Load Input Current 310 375 mA Disabled Input Current 3 5 mA Response to Input Transient 2 Input Terminal Ripple Current V 500 Recommended Input Fuse mA 40 A 12.17 V 100% Load, 18V Vin, trimmed up 10% See Figure 6 RMS Fast acting external fuse recommended OUTPUT CHARACTERISTICS Output Voltage Set Point 11.80 12.00 Output Voltage Regulation See Note 3 Over Line ±0.25 Over Load ±0.25 Over Temperature Total Output Voltage Range % % -300 300 mV 11.64 12.36 V Output Voltage Ripple and Noise Over sample, line, load, temperature & life 20 MHz bandwidth; see Note 1 Peak-to-Peak 100 RMS 24 Operating Output Current Range 0 Output DC Current-Limit Inception 46.2 50.4 mV Full load mV Full load 42 A Subject to thermal derating 54.6 A Output voltage 10% Low Output DC Current-Limit Shutdown Voltage 5 V See Note 2 Back-Drive Current Limit while Enabled 6 A Negative current drawn from output Back-Drive Current Limit while Disabled 3 4 mA Negative current drawn from output 12,000 µF Vout nominal at full load (resistive load) 300 mV 50% to 75% to 50% Iout max 500 µs To within 1% Vout nom 10 % Across Pins 8&4; Common Figures 3-5; 10 % Across Pins 8&4 15.4 V Over full temp range % See Figure 1 for efficiency curve Maximum Output Capacitance Output Voltage during Load Current Transient Step Change in Output Current (0.1 A/µs) Settling Time Output Voltage Trim Range -50 Output Voltage Remote Sense Range Output Over-Voltage Protection 14.2 14.8 EFFICIENCY 100% Load 94 50% Load 95 % See Figure 1 for efficiency curve Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected]) Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50ms, then the unit will enter into hiccup mode, Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 6 Input:18-36V Output:12V Current:42A Part No.:IQ24120HZx42 Technical Specification 100 60 95 50 Power Dissipation (W) 90 Efficiency (%) 85 80 75 70 18Vin 30 20 18Vin 10 24Vin 65 40 24Vin 36Vin 36Vin 0 60 0 6 12 18 24 Load Current (A) 30 36 0 42 Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 6 12 18 24 Load Current (A) 30 36 42 Figure 2: Power Dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 48 42 42 36 36 30 30 Iout (A) Iout (A) 48 24 24 18 18 12 400 LFM (2.0 m/s) 6 200 LFM (1.0 m/s) 25 40 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 6 100 LFM (0.5 m/s) 0 400 LFM (2.0 m/s) 12 300 LFM (1.5 m/s) 55 70 100 LFM (0.5 m/s) 0 85 25 40 55 70 85 Ambient Air Temperature (°C) Ambient Air Temperature (°C) Figure 3: Thermal Derating (max output current vs. ambient air temperature) for encased converter without heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 4: Thermal Derating (max output current vs. ambient air temperature) for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 5: Output Voltage Response to Step-Change in Load Current (50%75%-50% of Iout(max); dI/dt = 0.1A/µs. Load cap: 15µF tantalum cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Iout (20 A/div). Figure 6: Output Voltage Response to Step-Change in Input Voltage (250 V/ ms), at Max. load current. Load cap: 100µF electrolytic cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Vin. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 7 Input:18-36V Output:15V Current:34A Part No.:IQ24150HZx34 Technical Specification IQ24150HZx34 ELECTRICAL CHARACTERISTICS (15.0 Vout) Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. Max. Units Notes & Conditions INPUT CHARACTERISTICS Maximum Input Current 34 A No-Load Input Current 340 400 mA Disabled Input Current 3 5 mA Response to Input Transient 2.5 Input Terminal Ripple Current 500 Recommended Input Fuse V mA 40 A 15.21 V 100% Load, 18V Vin, trimmed up 10% See Figure 6 RMS Fast acting external fuse recommended OUTPUT CHARACTERISTICS Output Voltage Set Point 14.75 15.00 Output Voltage Regulation See Note 3 Over Line ±0.25 Over Load ±0.25 Over Temperature Total Output Voltage Range % % -375 375 mV 14.55 15.45 V Output Voltage Ripple and Noise Over sample, line, load, temperature & life 20 MHz bandwidth; see Note 1 Peak-to-Peak 100 RMS 20 Operating Output Current Range 0 Output DC Current-Limit Inception 37.4 40.8 mV Full load mV Full load 34 A Subject to thermal derating 44.2 A Output voltage 10% Low Output DC Current-Limit Shutdown Voltage 6 V See Note 2 Back-Drive Current Limit while Enabled 6 A Negative current drawn from output Back-Drive Current Limit while Disabled 3 4 mA Negative current drawn from output 10,000 µF Vout nominal at full load (resistive load) 500 mV 50% to 75% to 50% Iout max 250 µs To within 1% Vout nom 10 % Across Pins 8&4; Common Figures 3-5; 10 % Across Pins 8&4 19.2 V Over full temp range % See Figure 1 for efficiency curve Maximum Output Capacitance Output Voltage during Load Current Transient Step Change in Output Current (0.1 A/µs) Settling Time Output Voltage Trim Range -50 Output Voltage Remote Sense Range Output Over-Voltage Protection 17.7 18.5 EFFICIENCY 100% Load 94.0 50% Load 94.5 % See Figure 1 for efficiency curve Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected]) Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50ms, then the unit will enter into hiccup mode, with a 500ms off-time Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 8 Input:18-36V Output:15V Current:34A Part No.:IQ24150HZx34 Technical Specification 100 60 95 50 Power Dissipation (W) 90 Efficiency (%) 85 80 75 70 18Vin 30 20 18Vin 10 24Vin 65 40 24Vin 36Vin 36Vin 0 60 0 2 4 6 8 10 12 14 16 18 20 Load Current (A) 22 24 26 28 30 32 0 34 Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 2 4 6 8 10 12 14 16 18 20 22 Load Current (A) 24 26 28 30 32 34 Figure 2: Power Dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 42 36 36 30 30 24 24 Iout (A) Iout (A) 42 18 18 12 400 LFM (2.0 m/s) 12 400 LFM (2.0 m/s) 6 200 LFM (1.0 m/s) 300 LFM (1.5 m/s) 300 LFM (1.5 m/s) 6 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 0 25 40 55 70 100 LFM (0.5 m/s) 0 85 25 40 55 70 85 Ambient Air Temperature (°C) Ambient Air Temperature (°C) Figure 3: Thermal Derating (max output current vs. ambient air temperature) for encased converter without heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 4: Thermal Derating (max output current vs. ambient air temperature) for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 5: Output Voltage Response to Step-Change in Load Current (50%75%-50% of Iout(max); dI/dt = 0.1A/µs. Load cap: 15µF tantalum cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Iout (20 A/div). Figure 6: Output Voltage Response to Step-Change in Input Voltage (250 V/ ms), at Max. load current. Load cap: 100µF electrolytic cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Vin. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 9 Input:18-36V Output:24V Current:21A Part No.:IQ24240HZx21 Technical Specification IQ24240HZx21 ELECTRICAL CHARACTERISTICS (24.0 Vout) Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. Max. Units Notes & Conditions INPUT CHARACTERISTICS Maximum Input Current 33 A No-Load Input Current 300 360 mA Disabled Input Current 3 5 mA Response to Input Transient 3 Input Terminal Ripple Current V 500 Recommended Input Fuse mA 40 A 24.34 V 100% Load, 18V Vin, trimmed up 10% See Figure 6 RMS Fast acting external fuse recommended OUTPUT CHARACTERISTICS Output Voltage Set Point 23.60 24.00 Output Voltage Regulation See Note 3 Over Line ±0.25 Over Load ±0.25 Over Temperature Total Output Voltage Range % % -600 600 mV 23.28 24.72 V Output Voltage Ripple and Noise Over sample, line, load, temperature & life 20 MHz bandwidth; see Note 1 Peak-to-Peak 450 RMS 150 Operating Output Current Range 0 Output DC Current-Limit Inception 23.1 Full load mV Full load 21 A Subject to thermal derating 27.3 A Output voltage 10% Low 9.6 V See Note 2 Back-Drive Current Limit while Enabled 3 A Negative current drawn from output Back-Drive Current Limit while Disabled 3 4 mA Negative current drawn from output 6000 µF Vout nominal at full load (resistive load) Output DC Current-Limit Shutdown Voltage 25.2 mV Maximum Output Capacitance Output Voltage during Load Current Transient Step Change in Output Current (0.2 A/µs) 950 mV 50% to 75% to 50% Iout max Settling Time 500 µs To within 1% Vout nom 10 % Across Pins 8&4; Common Figures 3-5; 10 % Across Pins 8&4 30.7 V Over full temp range % See Figure 1 for efficiency curve Output Voltage Trim Range -50 Output Voltage Remote Sense Range Output Over-Voltage Protection 28.3 29.5 EFFICIENCY 100% Load 94 50% Load 95 % See Figure 1 for efficiency curve Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected]) Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50ms, then the unit will enter into hiccup mode, with a 500ms off-time Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 10 Input:18-36V Output:24V Current:21A Part No.:IQ24240HZx21 Technical Specification 100 70 95 60 Power Dissipation (W) 90 Efficiency (%) 85 80 75 70 18Vin 40 30 20 18Vin 24Vin 65 50 10 36Vin 36Vin 0 60 0 3 6 9 12 Load Current (A) 15 18 0 21 Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 3 6 9 12 Load Current (A) 15 18 21 Figure 2: Power Dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 24 21 21 18 18 15 15 Iout (A) 24 Iout (A) 24Vin 12 12 9 9 6 400 LFM (2.0 m/s) 3 200 LFM (1.0 m/s) 25 40 200 LFM (1.0 m/s) 55 70 85 25 40 55 70 85 Ambient Air Temperature (°C) Figure 3: Thermal Derating (max output current vs. ambient air temperature) for encased converter without heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 5: Output Voltage Response to Step-Change in Load Current (50%75%-50% of Iout(max); dI/dt = 0.1A/µs. Load cap: 1µF ceramic cap. Ch 1: Vout, Ch 2: Iout (10 A/div). Phone 1-888-567-9596 100 LFM (0.5 m/s) 0 Ambient Air Temperature (°C) Product # IQ24xxxHZXxx 300 LFM (1.5 m/s) 3 100 LFM (0.5 m/s) 0 400 LFM (2.0 m/s) 6 300 LFM (1.5 m/s) Figure 4: Thermal Derating (max output current vs. ambient air temperature) for encased converter with 1/2” heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 6: Output Voltage Response to Step-Change in Input Voltage (250 V/ ms), at Max. load current. Load cap: 100µF electrolytic cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Vin. www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 11 Input:18-36V Output:28V Current:18A Part No.:IQ24280HZx18 Technical Specification IQ24280HZx18 ELECTRICAL CHARACTERISTICS (28.0 Vout) Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. Max. Units Notes & Conditions INPUT CHARACTERISTICS Maximum Input Current 37 A No-Load Input Current 300 380 mA Disabled Input Current 100 160 mA Response to Input Transient 2.5 Input Terminal Ripple Current 500 Recommended Input Fuse V mA 40 A 28.39 V 100% Load, 18V Vin, trimmed up 10% See Figure 6 RMS Fast acting external fuse recommended OUTPUT CHARACTERISTICS Output Voltage Set Point 27.54 28.00 Output Voltage Regulation See Note 3 Over Line ±0.25 Over Load ±0.25 Over Temperature Total Output Voltage Range % % -700 700 mV 27.16 28.84 V 150 300 mV Full load 40 80 mV Full load 18 A Subject to thermal derating 22.5 A Output voltage 10% Low V See Note 2 6 A Negative current drawn from output 4 mA Negative current drawn from output 5000 µF Vout nominal at full load (resistive load) 1.5 V 50% to 75% to 50% Iout max 8 ms To within 1% Vout nom 20 % Across Pins 8&4; Common Figures 3-5; 10 % Across Pins 8&4 37.8 V Over full temp range % See Figure 1 for efficiency curve Output Voltage Ripple and Noise Over sample, line, load, temperature & life 20 MHz bandwidth; see Note 1 Peak-to-Peak RMS Operating Output Current Range 0 Output DC Current-Limit Inception 19.5 Output DC Current-Limit Shutdown Voltage 21.0 11.2 Back-Drive Current Limit while Enabled 4 5 Back-Drive Current Limit while Disabled 0 3 Maximum Output Capacitance Output Voltage during Load Current Transient Step Change in Output Current (0.2 A/µs) Settling Time Output Voltage Trim Range -50 Output Voltage Remote Sense Range Output Over-Voltage Protection 35.0 36.4 EFFICIENCY 100% Load 93 50% Load 95 % See Figure 1 for efficiency curve Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected]) Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50ms, then the unit will enter into hiccup mode, with a 500ms off-time Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 12 Input:18-36V Output:28V Current:18A Part No.:IQ24280HZx18 Technical Specification 60 100 55 95 50 Power Dissipation (W) Efficiency (%) 90 85 80 75 70 18Vin 65 40 35 30 25 20 15 24Vin 10 36Vin 5 18Vin 24Vin 36Vin 0 60 0 3 6 9 Load Current (A) 12 15 0 18 Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 3 6 9 Load Current (A) 12 15 18 Figure 2: Power Dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 18 18 15 15 12 12 Iout (A) Iout (A) 45 9 9 6 6 400 LFM (2.0 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 3 300 LFM (1.5 m/s) 3 200 LFM (1.0 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 100 LFM (0.5 m/s) 0 0 25 40 55 Ambient Air Temperature (°C) 70 25 85 40 55 Ambient Air Temperature (°C) 70 85 Figure 3: Thermal Derating (max output current vs. ambient air temperature) for encased converter without heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 4: Thermal Derating (max output current vs. ambient air temperature) for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 5: Output Voltage Response to Step-Change in Load Current (50%75%-50% of Iout(max); dI/dt = 0.1A/µs. Load cap: 100µF electrolytic cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Iout (10 A/div). Figure 6: Output Voltage Response to Step-Change in Input Voltage (250 V/ ms), at Max. load current. Load cap: 100µF electrolytic cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Vin. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 13 Input:18-36V Output:40V Current:13A Part No.:IQ24400HZx13 Technical Specification IQ24400HZx13 ELECTRICAL CHARACTERISTICS (40.0 Vout) Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. Max. Units Notes & Conditions INPUT CHARACTERISTICS Maximum Input Current 33 A No-Load Input Current 280 350 mA Disabled Input Current 3 5 mA Response to Input Transient 3.5 Input Terminal Ripple Current 400 Recommended Input Fuse V mA 40 A 40.56 V 100% Load, 18V Vin, trimmed up 10% See Figure 6 RMS Fast acting external fuse recommended OUTPUT CHARACTERISTICS Output Voltage Set Point 39.34 40.00 Output Voltage Regulation See Note 3 Over Line ±0.25 Over Load ±0.25 Over Temperature Total Output Voltage Range % % -1000 1000 mV 38.80 41.20 V Output Voltage Ripple and Noise Over sample, line, load, temperature & life 20 MHz bandwidth; see Note 1 Peak-to-Peak 100 RMS 25 Operating Output Current Range 0 Output DC Current-Limit Inception 13.8 15.0 mV Full load mV Full load 12.5 A Subject to thermal derating 16.3 A Output voltage 10% Low Output DC Current-Limit Shutdown Voltage 16 V See Note 2 Back-Drive Current Limit while Enabled 3 A Negative current drawn from output Back-Drive Current Limit while Disabled 3 4 mA Negative current drawn from output 1500 µF Vout nominal at full load (resistive load) Maximum Output Capacitance Output Voltage during Load Current Transient Step Change in Output Current (0.2 A/µs) 2.2 V 50% to 75% to 50% Iout max Settling Time 500 µs To within 1% Vout nom 10 % Across Pins 8&4; Common Figures 3-5; 10 % Across Pins 8&4 51.2 V Over full temp range % See Figure 1 for efficiency curve Output Voltage Trim Range -50 Output Voltage Remote Sense Range Output Over-Voltage Protection 47.2 49.2 EFFICIENCY 100% Load 93 50% Load 95 % See Figure 1 for efficiency curve Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected]) Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50ms, then the unit will enter into hiccup mode, with a 500ms off-time Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 14 Input:18-36V Output:40V Current:13A Part No.:IQ24400HZx13 Technical Specification 100 60 95 50 Power Dissipation (W) 90 Efficiency (%) 85 80 75 70 18Vin 30 20 24Vin 36Vin 36Vin 0 60 0 1 2 3 4 5 6 7 8 Load Current (A) 9 10 11 12 0 13 Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 1 2 3 4 5 6 7 8 Load Current (A) 9 10 11 12 13 Figure 2: Power Dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 16 16 14 14 12 12 10 10 Iout (A) Iout (A) 18Vin 10 24Vin 65 40 8 6 8 6 4 400 LFM (2.0 m/s) 2 200 LFM (1.0 m/s) 25 40 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 2 100 LFM (0.5 m/s) 0 400 LFM (2.0 m/s) 4 300 LFM (1.5 m/s) 55 70 100 LFM (0.5 m/s) 0 85 25 40 55 70 85 Ambient Air Temperature (°C) Ambient Air Temperature (°C) Figure 3: Thermal Derating (max output current vs. ambient air temperature) for encased converter without heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 4: Thermal Derating (max output current vs. ambient air temperature) for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 5: Output Voltage Response to Step-Change in Load Current (50%75%-50% of Iout(max); dI/dt = 0.1A/µs. Load cap: 1µF ceramic cap. Ch 1: Vout, Ch 2: Iout (5 A/div). Figure 6: Output Voltage Response to Step-Change in Input Voltage (250 V/ ms), at Max. load current. Load cap: 100µF electrolytic cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Vin. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 15 Input:18-36V Output:50V Current:10A Part No.:IQ24500HZx10 Technical Specification IQ24500HZx10 ELECTRICAL CHARACTERISTICS (50.0 Vout) Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. Max. Units Notes & Conditions INPUT CHARACTERISTICS Maximum Input Current 33 A No-Load Input Current 300 380 mA Disabled Input Current 100 160 mA Response to Input Transient 4 Input Terminal Ripple Current V 500 Recommended Input Fuse mA 40 A 50.70 V 100% Load, 18V Vin, trimmed up 10% See Figure 6 RMS Fast acting external fuse recommended OUTPUT CHARACTERISTICS Output Voltage Set Point 49.18 50.00 Output Voltage Regulation See Note 3 Over Line ±0.25 Over Load ±0.25 Over Temperature Total Output Voltage Range % % -1250 1250 mV 48.50 51.50 V 250 500 mV Full load 60 120 mV Full load 10 A Subject to thermal derating 13.0 A Output voltage 10% Low V See Note 2 4 A Negative current drawn from output 7 mA Negative current drawn from output 1000 µF Vout nominal at full load (resistive load) 50% to 75% to 50% Iout max Output Voltage Ripple and Noise Over sample, line, load, temperature & life 20 MHz bandwidth; see Note 1 Peak-to-Peak RMS Operating Output Current Range 0 Output DC Current-Limit Inception 11.0 Output DC Current-Limit Shutdown Voltage 12.0 20 Back-Drive Current Limit while Enabled 2 3 Back-Drive Current Limit while Disabled 0 3 Maximum Output Capacitance Output Voltage during Load Current Transient Step Change in Output Current (0.2 A/µs) 2 V Settling Time 8 ms To within 1% Vout nom 10 % Across Pins 8&4; Common Figures 3-5; 10 % Across Pins 8&4 61.5 V Over full temp range % See Figure 1 for efficiency curve Output Voltage Trim Range -50 Output Voltage Remote Sense Range Output Over-Voltage Protection 56.5 59.0 EFFICIENCY 100% Load 94 50% Load 95 % See Figure 1 for efficiency curve Note 1: Output is terminated with 1 µF ceramic capacitor. For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected]) Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50ms, then the unit will enter into hiccup mode, with a 500ms off-time Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 16 Input:18-36V Output:50V Current:10A Part No.:IQ24500HZx10 Technical Specification 60 100 55 95 50 Power Dissipation (W) Efficiency (%) 90 85 80 75 70 18Vin 65 40 35 30 25 20 15 24Vin 10 36Vin 5 18Vin 24Vin 36Vin 0 60 0 2 4 6 8 Load Current (A) 0 10 Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 10.0 10.0 9.0 9.0 8.0 8.0 7.0 7.0 6.0 6.0 5.0 4.0 3.0 400 LFM (2.0 m/s) 2.0 300 LFM (1.5 m/s) 1.0 100 LFM (0.5 m/s) 2 4 6 8 Load Current (A) 10 Figure 2: Power Dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. Iout (A) Iout (A) 45 200 LFM (1.0 m/s) 5.0 4.0 3.0 400 LFM (2.0 m/s) 2.0 300 LFM (1.5 m/s) 1.0 100 LFM (0.5 m/s) 200 LFM (1.0 m/s) 0.0 0.0 25 40 55 Ambient Air Temperature (°C) 70 25 85 40 55 Ambient Air Temperature (°C) 70 85 Figure 3: Thermal Derating (max output currnet vs. ambient air temperature) for encased converter without heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 4: Thermal Derating (max output current vs. ambient air temperature) for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 5: Output Voltage Response to Step-Change in Load Current (50%75%-50% of Iout(max); dI/dt = 0.1A/µs. Load cap: 100µF electrolytic cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Iout (5 A/div). Figure 6: Output Voltage Response to Step-Change in Input Voltage (250 V/ ms), at Max. load current. Load cap: 100µF electrolytic cap and 1µF ceramic cap. Ch 1: Vout, Ch 2: Vin. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 17 Technical Specification IQ24xxxHZXxx Application Section BASIC OPERATION AND FEATURES CONTROL FEATURES This converter series uses a two-stage power conversion topology. The first stage keeps the output voltage constant over variations in line, load, and temperature. The second stage uses a transformer to provide the functions of input/output isolation and voltage step-down to achieve the low output voltage required. REMOTE ON/OFF (Pin 2): The ON/OFF input, Pin 2, permits the user to control when the converter is on or off. This input is referenced to the return terminal of the input bus, Vin(-). Both the first stage and the second stage switch at a fixed frequency for predictable EMI performance. Rectification of the transformer’s output is accomplished with synchronous rectifiers. These devices, which are MOSFETs with a very low on-state resistance, dissipate significantly less energy than Schottky diodes, enabling the converter to achieve high efficiency. Dissipation throughout the converter is so low that it does not require a heatsink or even a baseplate for operation in many applications; however, adding a heatsink provides improved thermal derating performance in extreme situations. To further withstand harsh environments and thermally demanding applications, certain models are available totally encased. See Ordering Information page for available thermal design options. SynQor half-brick converters use the industry standard footprint and pin-out. ON/OFF ON/OFF ON/OFF In negative logic versions, the ON/OFF signal is active low (meaning that a low voltage turns the converter on). In positive logic versions, the ON/OFF input is active high (meaning that a high voltage turns the converter on). Figure A details possible circuits for driving the ON/OFF pin. Figure B is a detailed look of the internal ON/OFF circuitry. See Ordering Information page for available enable logics. REMOTE SENSE Pins 8(+) and 6(-): The SENSE(+) and SENSE(-) inputs correct for voltage drops along the conductors that connect the converter’s output pins to the load. Pin 8 should be connected to Vout(+) and Pin 6 should be connected to Vout(-) at the point on the board where regulation is desired. If these connections are not made, the converter will deliver an output voltage that is slightly higher than its specified value. Note: The Output Over-Voltage Protection circuit senses the voltage across the output (Pins 9 and 5) to determine when it should trigger, not the voltage across the converter’s sense leads (Pins 8 and 6). Therefore, the resistive drop on the board should be small enough so that output OVP does not trigger, even during load transients. OUTPUT VOLTAGE TRIM (Pin 7): The TRIM input permits the user to adjust the output voltage across the sense leads up or down according to the trim range specifications. SynQor uses industry standard trim equations. Vin(_) Vin(_) Remote Enable Circuit Negative Logic (Permanently Enabled) 5V ON/OFF Vin(_) Positive Logic (Permanently Enabled) TTL/ CMOS To decrease the output voltage, the user should connect a resistor between Pin 7 (TRIM) and Pin 6 (SENSE(–) input). For a desired decrease of the nominal output voltage, the value of the resistor should be: ON/OFF ( 100% Rtrim-down = Δ% = | Vnominal – Vdesired Δ% –2 ) kΩ where Vin(_) Vin( ) _ Open Collector Enable Circuit Direct Logic Drive Figure A: Various Circuits for Driving the ON/OFF Pin 18V(max) | × 100% To increase the output voltage, the user should connect a resistor between Pin 7 (TRIM) and Pin 8 (SENSE(+) input). For a desired increase of the nominal output voltage, the value of the resistor should be: 5V 50k ON/OFF Vnominal 10k Rtrim-up = TTL ( ) Vnominal –2 × Vdesired + Vnominal kΩ 1.225 Vdesired – Vnominal Vin(_) Figure B: Internal ON/OFF Pin Circuitry Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 18 Technical Specification IQ24xxxHZXxx Application Section The Trim Graph in Technical Features shows the relationship between the trim resistor value and Rtrim-up and Rtrim-down, showing the total range the output voltage can be trimmed up or down. Note: The TRIM feature does not affect the voltage at which the output over-voltage protection circuit is triggered. Trimming the output voltage too high may cause the over-voltage protection circuit to engage, particularly during transients. It is not necessary for the user to add capacitance at the TRIM pin. The node is internally filtered to eliminate noise. Total DC Variation of Vout: For the converter to meet its full specifications, the maximum variation of the DC value of Vout, due to both trimming and remote load voltage drops, should not be greater than that specified for the output voltage trim range. Protection Features Input Under-Voltage Lockout (UVLO): The converter is designed to turn off when the input voltage is too low, helping to avoid an input system instability problem, which is described in more detail in the application note titled “Input System Instability” on the SynQor website. The lockout circuitry is a comparator with DC hysteresis. When the input voltage is rising, it must exceed the typical “Turn-On Voltage Threshold” value* before the converter will turn on. Once the converter is on, the input voltage must fall below the typical Turn-Off Voltage Threshold value before the converter will turn off. Output Current Limit (OCP): If the output current exceeds the “Output DC Current Limit Inception” value*, then a fast linear current limit controller will reduce the output voltage to maintain a constant output current. If as a result, the output voltage falls below the “Output DC Current Limit Shutdown Voltage”* for more than 50 ms, then the unit will enter into hiccup mode, with a 500 ms off-time. The unit will then automatically attempt to restart. Back-Drive Current Limit: If there is negative output current of a magnitude larger than the “Back-Drive Current Limit while Enabled” specification*, then a fast back-drive limit controller will increase the output voltage to maintain a constant output current. If this results in the output voltage exceeding the “Output OverVoltage Protection” threshold*, then the unit will shut down. Output Over-Voltage Limit (OVP): If the voltage across the output pins exceeds the Output Over-Voltage Protection threshold, the converter will immediately stop switching. This prevents damage to the load circuit due to 1) excessive series resistance in output current path from converter output pins to sense point, 2) a release of a short-circuit condition, or 3) a release of a current limit condition. Load capacitance determines exactly how high the output voltage will rise in response to these conditions. After 500ms the converter will automatically restart for all but the S Feature Set option, which is latching and will not restart until input power is cycled or the ON/OFF input is toggled. Over-Temperature Shutdown (OTP): A temperature sensor on the converter senses the average temperature of the module. The thermal shutdown circuit is designed to turn the converter off when the temperature at the sensed location reaches the “OverTemperature Shutdown” value*. It will allow the converter to turn on again when the temperature of the sensed location falls by the amount of the “Over-Temperature Shutdown Restart Hysteresis” value*. Startup Inhibit Period: The Startup Inhibit Period ensures that the converter will remain off for approximately 500 ms when it is shut down due to a fault. This generates a 2 Hz “hiccup mode,” which prevents the converter from overheating. In all, there are three ways that the converter can be shut down, initiating a Startup Inhibit Period: • Output Over-Voltage Protection • Current Limit • Short Circuit Protection * See Electrical Characteristics section. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 19 Technical Specification IQ24xxxHZXxx Application Section APPLICATION CONSIDERATIONS Input System Instability: This condition can occur because any DC-DC converter appears incrementally as a negative resistance load. A detailed application note titled “Input System Instability” is available on the SynQor website which provides an understanding of why this instability arises, and shows the preferred solution for correcting it. Application Circuits: A typical circuit diagram, Figure C below details the input filtering and voltage trimming. Input Filtering and External Input Capacitance: Figure D below shows the internal input filter components. This filter dramatically reduces input terminal ripple current, which otherwise could exceed the rating of an external electrolytic input capacitor. The recommended external input capacitance is specified in the Input Characteristics section of the Electrical Specifications. More detailed information is available in the application note titled “EMI Characteristics” on the SynQor website. Output Filtering and External Output Capacitance: The internal output filter components are shown in Figure D below. This filter dramatically reduces output voltage ripple. Some minimum external output capacitance is required, as specified in the Output Characteristics area of the Electrical Characteristics section. No damage will occur without this capacitor connected, but peak output voltage ripple will be much higher. Thermal Considerations: For baseplated and encased versions, the max operating baseplate temperature, TB, is 100ºC. Refer to the Thermal Derating Curves in the Technical Figures section to see the available output current at baseplate temperatures below 100ºC. A power derating curve can be calculated for any heatsink that is attached to the base-plate of the converter. It is only necessary to determine the thermal resistance, RTHBA, of the chosen heatsink between the baseplate and the ambient air for a given airflow rate. This information is usually available from the heatsink vendor. The following formula can the be used to determine the maximum power the converter can dissipate for a given thermal condition if its base-plate is to be no higher than 100ºC. 100ºC - TA RTHBA This value of maximum power dissipation can then be used in conjunction with the data shown in the Power Dissipation Curves in the Technical Figures section to determine the maximum load current (and power) that the converter can deliver in the given thermal condition. For convenience, Thermal Derating Curves are provided in the Technical Figures section. max Pdiss Vin(+) Vin Vout(+) Vsense(+) Electrolytic Capacitor External Input Filter = ON/OFF Trim Vsense(_) Vin(_) Rtrim-up or Rtrim-down Cload Iload Vout(_) Figure C: Typical Application Circuit (negative logic unit, permanently enabled) Lin Vin(+) Vout(+) C1 C2 Regulation Stage Current Sense Isolation Stage Vin(_) Vout(-) Figure D: Internal Input and Output Filter Diagram (component values listed in Electrical Characteristics section) Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 20 Technical Specification IQ24xxxHZXxx Application Section ACTIVE CURRENT SHARE Overview: The full-featured option, specified by an “F” in the last character in the part number, has current sharing operation supported, achieved by adding two additional pins: SHARE(+) and SHARE(-). Connection of Paralleled Units: Up to 100 units can be placed in parallel. In this current share architecture, one unit is dynamically chosen to act as a master, controlling all other units. It cannot be predicted which unit will become the master at any given time, so units should be wired symmetrically (see Figures E & F). • Input power pins and output power pins should be tied together between units, preferably with wide overlapping copper planes, after any input common-mode choke. • The SHARE(+) and SHARE(-) pins should be routed between all paralleled units as a differential pair. • The ON/OFF pins should be connected in parallel, and rise/fall times should be kept below 2 ms. • The SENSE(+) and SENSE(-) pins should be connected either locally at each unit or separately to a common sense point. If an output common-mode choke is used, sense lines should be connected on the module-side of the choke. • If the TRIM pin is used, then each unit should have its own trim resistor connected locally between TRIM and SENSE(+) or SENSE(-). Vin(+) Sense(+) On/Off ≥1 nF Elec. Cap. A A Share(+) Trim ≥10 μF Share(-) Sense(-) Vin(-) Vout(-) Vin(+) Vout(+) Sense(+) On/Off Electrolytic Capacitor 470 nH (nom) Vout(+) Share(+) Load B B 470 nH (nom) A Trim ≥10 μF Share(-) Sense(-) Vin(-) B Vout(-) Up to 100 Units Vin(+) On/Off Electrolytic Capacitor Share(+) 470 nH (nom) Vout(+) Sense(+) A Trim ≥10 μF Share(-) Sense(-) Vin(-) B Vout(-) Figure E: Typical Application Circuit for Paralleling of Full-Featured Units with an Input Common-Mode Choke. If an input common-mode choke is used, Vin(-) MUST be tied together AFTER the choke for all units. 470 nH (nominal) inductor or an output common-mode choke is required for outputs >18 V. See Figure F for output common-mode choke configuration. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 21 Technical Specification IQ24xxxHZXxx Application Section Automatic Configuration: The micro-controller inside each power converter unit is programmed at the factory with a unique chip number. In every other respect, each shared unit is identical and has the same orderable part number. On initial startup (or after the master is disabled or shuts down), each unit determines the chip number of every other unit currently connected to the shared serial bus formed by the SHARE(+) and SHARE(-) pins. The unit with the highest chip number dynamically reconfigures itself from slave to master. The rest of the units (that do not have the highest chip number) become slaves. The master unit then broadcasts its control state over the shared serial bus on a cycle-by-cycle basis. The slave units interpret and implement the control commands sent by the master, mirroring every action of the master unit. If the master is disabled or encounters a fault condition, all units will immediately shut down, and if the master unit is unable to restart, then the unit with the next highest chip number will become master. If a slave unit is disabled or encounters a fault condition, all other units continue to run, and the slave unit can restart seamlessly. Automatic Interleaving: The slave units automatically lock frequency with the master, and interleave the phase of their switching transitions for improved EMI performance. To obtain the phase angle relative to the master, each slave divides 360 degrees by the total number of connected units, and multiples the result by its rank among chip numbers of connected units. ORing Diodes placed in series with the converter outputs must also have a resistor smaller than 500 Ω placed in parallel. This resistor keeps the output voltage of a temporarily disabled slave unit consistent with the active master unit. If the output voltage of the slave unit were allowed to totally discharge, and the slave unit tried to restart, it would fail because the slave reproduces the duty cycle of the master unit, which is running in steady state and cannot repeat an output voltage soft-start. Common-Mode Filtering must be a single primary side choke handling the inputs from all the paralleled units, or multiple chokes placed on the secondary side. This ensurses a solid Vin(-) plane is maintained between units. Adding a common-mode choke at the output eliminates the need for the 470 nH indcutor at the output of shared units when Vout > 18 V. If an output common-mode choke is used, sense connections must be made on the module-side of the choke. Resonance Between Output Capacitors is Possible: When multiple higher-voltage modules are paralleled, it is possible to excite a series resonance between the output capacitors internal to the module and the parasitic inductance of the module output pins. This is especially likely at higher output voltages where the module internal capacitance is relatively small. This problem is independent of external output capacitance. For modules with an output voltage greater than 18 V, to ensure that this resonant frequency is below the switching frequency it is recommended to add a nominal 470 nH of inductance, located close to the module, in series with each converter output. There must be at least 10 μF of capacitance per converter, located on the load-side of that inductor. The inductance could be from the leakage inductance of a secondary-side common-mode choke; in which case the output capacitor should be appropriately sized for the chosen choke. When using an output common-mode choke, the Sense lines must be connected on the module-side of the common-mode choke (see Figure F). RS-485 Physical Layer: The internal RS-485 transceiver includes many advanced protection features for enhanced reliability: • Current Limiting and Thermal Shutdown for Driver Overload Protection • IEC61000 ESD Protection to +/- 16.5 kV • Hot Plug Circuitry – SHARE(+) and SHARE(-) Outputs Remain Tri-State During Power-up/Power-down Internal Schottky Diode Termination: Despite signaling at high speed with fast edges, external termination resistors are not necessary. Each receiver has four Schottky diodes built in, two for each line in the differential pair. These diodes clamp any ringing caused by transmission line reflections, preventing the voltage from going above about 5.5 V or below about -0.5 V. Any subsequent ringing then inherently takes place between 4.5 and 5.5 V or between -0.5 and 0.5 V. Since each receiver on the bus contains a set of clamping diodes to clamp any possible transmission line reflection, the bus does not necessarily need to be routed as a daisy-chain. Pins SHARE(+) and SHARE(-) are referenced to Vin(-), and therefore should be routed as a differential pair near the Vin(-) plane for optimal signal integrity. The maximum difference in voltage between Vin() pins of all units on the share-bus should be kept within 0.3 V to prevent steady-state conduction of the termination diodes. Therefore, the Vin(-) connections to each unit must be common, preferably connected by a single copper plane. Share Accuracy: Inside each converter micro-controller, the duty cycle is generated digitally, making for excellent duty cycle matching between connected units. Some small duty cycle mismatch is caused by (well controlled) process variations in the MOSFET gate drivers. However, the voltage difference induced by this duty cycle mismatch appears across the impedance of the entire power converter, from input to output, multiplied by two, since the differential current flows out of one converter and into another. So, a small duty cycle mismatch yields very small differential currents, which remain small even when 100 units are placed in parallel. In other current-sharing schemes, it is common to have a currentsharing control loop in each unit. However, due to the limited bandwidth of this loop, units do not necessarily share current on startup or during transients before this loop has a chance to respond. In contrast, the current-sharing scheme used in this product has no control dynamics: control signals are transmitted fast enough that the slave units can mirror the control state of the master unit on a cycle-by-cycle basis, and the current simply shares properly, from the first switching cycle to the last. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 22 Technical Specification IQ24xxxHZXxx Application Section Vin(+) Vout(+) Sense(+) On/Off ≥1 nF Elec. Cap. Share(+) Trim Load Share(-) Sense(-) Vin(-) Vout(-) Vin(+) Vout(+) Sense(+) On/Off Electrolytic Capacitor Share(+) Trim Share(-) Sense(-) Vin(-) Vout(-) Up to 100 Units Vin(+) On/Off Electrolytic Capacitor Vout(+) Sense(+) Share(+) Trim Share(-) Sense(-) Vin(-) Vout(-) Figure F: Typical Application Circuit for Paralleling of Full-Featured Units with an Output Common-Mode Choke. When using an output common-mode choke, SENSE lines must be connected on the module-side of the choke. See Figure E for configuration with an input common-mode choke. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 23 Technical Specification IQ24xxxHZXxx Standards & Qualification Testing Parameter Notes & Conditions STANDARDS COMPLIANCE UL 60950-1/R:2011-12 Basic Insulation CAN/CSA-C22.2 No. 60950-1/A1:2011 EN 60950-1/A12:2011 Certified by TUV Note: An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety certificates on new releases or download from the SynQor website. Parameter # Units Test Conditions QUALIFICATION TESTING Life Test 32 95% rated Vin and load, units at derating point, 1000 hours Vibration 5 10-55 Hz sweep, 0.060" total excursion, 1 min./sweep, 120 sweeps for 3 axis Mechanical Shock 5 100g minimum, 2 drops in x, y, and z axis Temperature Cycling 10 -40 °C to 100 °C, unit temp. ramp 15 °C/min., 500 cycles Power/Thermal Cycling 5 Toperating = min to max, Vin = min to max, full load, 100 cycles Design Marginality 5 Tmin-10 °C to Tmax+10 °C, 5 °C steps, Vin = min to max, 0-105% load Humidity 5 85 °C, 95% RH, 1000 hours, continuous Vin applied except 5 min/day Solderability 15 pins Altitude 2 MIL-STD-883, method 2003 70,000 feet (21 km), see Note Note: A conductive cooling design is generally needed for high altitude applications because of naturally poor convective cooling at rare atmospheres. Product # IQ24xxxHZXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 24 Technical Specification IQ24xxxHZXxx Standard Mechanical Diagram 2.486 2.00 1.400 1.000 [63.14 0.5] SIDE VIEW [35.56 ] [17.78 ] .400 [10.16 ] [ .243 [6.17 8 6 7 .243 [6.17 .163 [4.14 ] .020 0.5] TOP VIEW 1.90 [48.3 ] 1.90 [48.3 ] .020 0.5] 1 2 B 3 4 .400 [10.16 ] .800 [20.32 ] 1.00 [25.4 ] 1.400 .543 .020 [13.79 0.5] NOTES 1) Applied torque per screw should not exceed 6in-lb. (0.7 Nm). 2) Baseplate flatness tolerance is 0.004” (.10 mm) TIR for surface. 3) 5) Pins 1-4, 6-8, and B are 0.040” (1.02mm) diameter, with 0.080” (2.03mm) diameter standoff shoulders. Pins 5 and 9 are 0.080” (2.03 mm) diameter with 0.125” (3.18 mm) diameter standoff shoulders. All Pins: Material - Copper Alloy; Finish - Matte Tin over Nickel plate 6) Undimensioned components are shown for visual reference only. 7) Weight: 4.9 oz (139 g) 8) Threaded and Non-Threaded options available 4) .020 0.5] ] 5 .020 0.5] .233 [5.92 +.002 .512 -.005 +0.05 13 -0.12 OVERALL HEIGHT [25.4 ] .700 9 2.386 [60.6 .020 [50.8 ] 9) All dimensions in inches (mm). Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) unless otherwise noted. 11) Workmanship: Meets or exceeds IPC-A-610C Class II THRU HOLE M3 (SEE NOTE 8) STANDOFFS (4) Phone 1-888-567-9596 [ ] [35.56 ] PIN DESIGNATIONS Pin 1 Name Vin(+) Function Positive input voltage 2 ON/OFF TTL input to turn converter on and off, referenced to Vin(–), with internal pull up. B SHARE(+) 3 4 5 6 7 8 9 SHARE(-) Vin(–) Vout(–) SENSE(–) TRIM SENSE(+) Vout(+) Active current share differential pair (See note 4) Negative input voltage Negative output voltage Negative remote sense (See note 1) Output voltage trim (See note 2) Positive remote sense (See note 3) Positive output voltage Notes: 1) SENSE(–) should be connected to Vout(–) either remotely or at the converter. 2) Leave TRIM pin open for nominal output voltage. 3) SENSE(+) should be connected to Vout(+) either remotely or at the converter. Full-Featured option only. Pin 3 and Pin B not populated on standard model. 4) Product # IQ24xxxHZXxx +.007 -.010 +0.17 0.69 -0.25 BOTTOMSIDE CLEARANCE .027 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 25 Technical Specification IQ24xxxHZXxx Flanged Mechanical Diagram 3.15 [80.0] 1.400[35.56] 1.000[25.40] 2.950[74.93] 2.486±0.020 [ 63.14±0.50 ] USE W/ 4-40 OR M3 SCREW (6x) RECOM. TORQUE 3 in.lb .13[3.3] 0.700[17.78] 0.18[4.6] SEE NOTES 5 & 6 .500 ± .025 [12.7± 0.63] OVERALL HEIGHT 0.400[10.16] 5 6 7 8 9 0.01 [0.2] 1.900 [48.26] BOTTOM VIEW TOP VIEW 1.61 [40.9] 1.87 [47.4] 2.386± 0.020 [ 60.60± 0.50 ] 0.96 [24.4] 1 4 0.31 [7.9] 0.543±0.020 [ 13.79±0.50 ] 0.027±0.020 [ 0.69±0.50] 2 1 0.400[10.16] 0.125 [3.18] 1.400[35.56] 0.775±0.020 [ 19.69±0.50 ] 0.875±0.020 [ 22.23±0.50 ] NOTES 1) 2) 3) Applied torque per screw should not exceed 5in-lb. (0.7 Nm) (3in-lb. recommended). Baseplate flatness tolerance is 0.01” (.25 mm) TIR for surface. 5) Pins 1-4, 6-8 and B are 0.040” (1.02mm) diameter, with 0.080” (2.03mm) diameter standoff shoulders. Pins 5 and 9 are 0.080” (2.03 mm) diameter with 0.125” (3.18 mm) diameter standoff shoulders. All Pins: Material - Copper Alloy; Finish - Matte Tin over Nickel plate 6) Undimensioned components are shown for visual reference only. 7) Weight: 4.8oz (137g) 4) Name Vin(+) Function Positive input voltage 2 ON/OFF TTL input to turn converter on and off, referenced to Vin(–), with internal pull up. B SHARE(+) 3 4 5 6 7 8 9 SHARE(-) Vin(–) Vout(–) SENSE(–) TRIM SENSE(+) Vout(+) 9) All dimensions in inches (mm). Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) unless otherwise noted. 10) Workmanship: Meets or exceeds IPC-A-610C Class II Phone 1-888-567-9596 Active current share differential pair (See note 4) Negative input voltage Negative output voltage Negative remote sense (See note 1) Output voltage trim (See note 2) Positive remote sense (See note 3) Positive output voltage Notes: 1) SENSE(–) should be connected to Vout(–) either remotely or at the converter. 2) Leave TRIM pin open for nominal output voltage. 3) SENSE(+) should be connected to Vout(+) either remotely or at the converter. Full-Featured option only. Pin 3 and Pin B not populated on standard model. 4) Product # IQ24xxxHZXxx PIN DESIGNATIONS Pin 1 www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 26 Technical Specification IQ24xxxHZXxx PART NUMBERING SYSTEM ORDERING INFORMATION The part numbering system for SynQor’s dc-dc converters follows the format shown in the example below. The tables below show the valid model numbers and ordering options for converters in this product family. When ordering SynQor converters, please ensure that you use the complete 15 character part number consisting of the 12 character base part number and the additional characters for options. Add “-G” to the model number for 6/6 RoHS compliance. IQ 2 4 0 5 0 H Z C 6 0 N R A - G Model Number 6/6 RoHS Options (see Ordering Information) Output Current Thermal Design Performance Level Package Size IQ24050HZw60xyz IQ24120HZw42xyz IQ24150HZw34xyz IQ24240HZw21xyz IQ24280HZw18xyz IQ24400HZw13xyz IQ24500HZw10xyz Input Voltage 18-36 18-36 18-36 18-36 18-36 18-36 18-36 Output Voltage 5.0 V 12 V 15 V 24 V 28 V 40 V 50 V Max Output Current 60 A 42 A 34 A 21 A 18 A 12.5 A 10 A Output Voltage Input Voltage Product Family The first 12 characters comprise the base part number and the last 3 characters indicate available options. The “-G” suffix indicates 6/6 RoHS compliance. Application Notes A variety of application notes and technical white papers can be downloaded in pdf format from our website. The following options must be included in place of the w x y z spaces in the model numbers listed above. Options Description Enable Thermal Design Pin Style Logic C - Encased D - Encased with Non-Threaded Baseplate V - Encased with Flanged Baseplate N - Negative R - 0.180" Feature Set A - Standard w/ AutoRecovery OVP F - Full-Feature S - Standard w/ Latching OVP RoHS Compliance: The EU led RoHS (Restriction of Hazardous Substances) Directive bans the use of Lead, Cadmium, Hexavalent Chromium, Mercury, Polybrominated Biphenyls (PBB), and Polybrominated Diphenyl Ether (PBDE) in Electrical and Electronic Equipment. This SynQor product is 6/6 RoHS compliant. For more information please refer to SynQor’s RoHS addendum available at our RoHS Compliance / Lead Free Initiative web page or e-mail us at [email protected]. Not all combinations make valid part numbers, please contact SynQor for availability. See the Product Summary web page for more options. PATENTS SynQor holds the following U.S. patents, one or more of which apply to each product listed in this document. Additional patent applications may be pending or filed in the future. Contact SynQor for further information and to order: Phone: Toll Free: Fax: E-mail: Web: Address: Product # IQ24xxxHZXxx 978-849-0600 888-567-9596 978-849-0602 [email protected] www.synqor.com 155 Swanson Road Boxborough, MA 01719 USA Phone 1-888-567-9596 5,999,417 6,222,742 6,545,890 6,577,109 6,594,159 6,731,520 6,894,468 6,896,526 6,927,987 7,050,309 7,072,190 7,085,146 7,119,524 7,269,034 7,272,021 7,272,023 7,558,083 7,564,702 7,765,687 7,787,261 8,023,290 8,149,597 8,493,751 Warranty SynQor offers a two (2) year limited warranty. Complete warranty information is listed on our website or is available upon request from SynQor. Information furnished by SynQor is believed to be accurate and reliable. However, no responsibility is assumed by SynQor for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SynQor. www.synqor.com Doc.# 005-0005664 Rev. D 11/18/13 Page 27