Technical Specification IQ24xxxHEXxx 18-36V 50V Continuous Input Transient Input 5.0-50V 400W 2250V dc Half-brick Outputs Max Power Isolation DC-DC Converter N @ 08 T EC U V O 0H 50 50 IN 6V 24 -3 18 IQ 8A R A -G The InQor Exa Half-brick converter series is composed of next-generation, board-mountable, fixed switching frequency dc-dc 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. Operational Features • • • • High efficiency, 95% at full rated load current Operating input voltage range: 18-36V Fixed frequency switching provides predictable EMI No minimum load requirement Mechanical Features • Industry standard half-brick pin-out configuration • Size: 2.390" x 2.490" x 0.512", 60.6 x 63.1 x 13.0 mm • Total weight: 5oz (142g) • Flanged baseplate version available Protection Features • • • • • 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 • 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 • • • • • • • 2250V, 30 MΩ input-to-output isolation UL 60950-1:2003, basic insulation CAN/CSA-C22.2 No. 60950-1:2003 EN60950-1:2001 Certified by TUV CE Marked 2006/95/EC Low Voltage Directive IEC 61000-4-2 RoHS compliant (see last page) Product # IQ24xxxHEXxx Phone 1-888-567-9596 CONTENTS Page No. Family Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Electrical Characteristics (28 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 4 Electrical Characteristics (50 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 6 Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Standards & Qualification Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Encased Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Full Feature Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 www.synqor.com Doc.# 005-0005677 Rev. B 06/01/10 Page 1 Technical Specification IQ24xxxHEXxx 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. ABSOLUTE MAXIMUM RATINGS Input Voltage Non-Operating 50 Operating 40 Operating Transient Protection 50 Isolation Voltage Input to Output 2250 Input to Base-Plate 2250 Output to Base-Plate 2250 Operating Temperature -40 100 Storage Temperature -55 125 Voltage at ON/OFF input pin -2 18 INPUT CHARACTERISTICS Operating Input Voltage Range 18 24 36 Input Under-Voltage Lockout Turn-On Voltage Threshold 16.5 17.0 17.5 Turn-Off Voltage Threshold 15.0 15.5 16.0 Lockout Voltage Hysteresis 1.0 1.5 2.0 Input Over-Voltage Shutdown Recommended External Input Capacitance 470 Input Filter Component Values (L\C) 0.34\23 DYNAMIC CHARACTERISTICS Turn-On Transient Turn-On Time 24 35 40 Output Voltage Overshoot 5 Auto-recovery Startup Inhibit Time 500 ISOLATION CHARACTERISTICS Isolation Voltage (dielectric strength) Isolation Resistance 30 Isolation Capacitance (input to output) 1000 TEMPERATURE LIMITS FOR POWER DERATING CURVES Semiconductor Junction Temperature 125 Board Temperature 125 Transformer Temperature 125 Maximum Baseplate Temperature, Tb 100 FEATURE CHARACTERISTICS Switching Frequency 230 240 250 ON/OFF Control Off-State Voltage 2.4 18 On-State Voltage -2 0.8 ON/OFF Control Pull-Up Voltage 5 Pull-Up Resistance 10 Over-Temperature Shutdown OTP Trip Point 125 Over-Temperature Shutdown Restart Hysteresis 10 RELIABILITY CHARACTERISTICS Calculated MTBF (Telcordia) TR-NWT-000332 1.49 Calculated MTBF (MIL-217) MIL-HDBK-217F 1.31 Field Demonstrated MTBF Note 1: Higher values of isolation capacitance can be added external to the module. Product # IQ24xxxHEXxx Phone 1-888-567-9596 www.synqor.com Units Notes & Conditions V V V V dc V dc V dc °C °C V V Continuous Continuous 1 s transient, square wave Baseplate temperature 50V transient for 1 s V V V V µF µH\µF Not Available Typical ESR 0.1-0.2 Ω Internal values; see Figure C ms % ms Full load, Vout=90% nom. Maximum Output Capacitance See Application Section See Absolute Maximum Ratings MΩ pF See Note 1 °C °C °C °C Package rated to 150 °C UL rated max operating temp 130 °C kHz Insolation stage switching freq. is half this V Application notes Figure A V kΩ °C °C Average PCB Temperature 106 Hrs. Tb = 70°C 106 Hrs. Tb = 70°C 106 Hrs. See our website for details Doc.# 005-0005677 Rev. B 06/01/10 Page 2 Technical Specification IQ24xxxHEXxx 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: Typical startup waveform. 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 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 graph for trim-up 5.0 to 15V outputs. Common Figure 4: Trim graph for trim-up 24 to 50V outputs. Trim Resistance (kOhms) 10,000.0 All voltages 1,000.0 100.0 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 graph for trim down. Product # IQ24xxxHEXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005677 Rev. B 06/01/10 Page 3 Input:18-36V Output:28V Current:14A Part No.:IQ24280HEx14 Technical Specification IQ24280HZx14 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 32.2 A No-Load Input Current 300 380 mA Disabled Input Current 100 160 mA Response to Input Transient 2.5 V Input Terminal Ripple Current 250 mA Recommended Input Fuse 40 A 28.39 V Vin min; trim up; in current limit See Figure 6 RMS Fast acting external fuse recommended OUTPUT CHARACTERISTICS Output Voltage Set Point 27.54 28 Output Voltage Regulation See Note 3 Over Line ±0.25 Over Load % ±0.25 Over Temperature Total Output Voltage Range % -700 700 mV 27.160 28.840 V 110 220 mV Full load 25 50 mV Full load 14 A Subject to thermal derating 19.0 A Output voltage 10% Low 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 16.0 Output DC Current-Limit Shutdown Voltage 17.5 V See Note 2 Back-Drive Current Limit while Enabled 3 11.2 4 6 A Negative current drawn from output Back-Drive Current Limit while Disabled 0 3 4 mA Negative current drawn from output 5000 µF Vout nominal at full load (resistive load) 1.0 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 Maximum Output Capacitance Output Voltage during Load Current Transient Step Change in Output Current (0.1 - 5 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 # IQ24xxxHEXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005677 Rev. B 06/01/10 Page 4 Input:18-36V Output:28V Current:14A Part No.:IQ24280HEx14 100 40 95 35 90 30 Power Dissipation (W) Efficiency (%) Technical Specification 85 80 75 70 18Vin 24Vin 65 20 15 10 18Vin 24Vin 5 36Vin 36Vin 0 60 0 2 4 6 8 Load Current (A) 10 12 0 14 Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 14 14 12 12 10 10 8 8 6 4 4 6 8 Load Current (A) 10 12 14 6 4 400 LFM (2.0 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 2 200 LFM (1.0 m/s) 2 2 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) 25 100 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: Encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs. ambient air temperature for 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 # IQ24xxxHEXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005677 Rev. B 06/01/10 Page 5 Input:18-36V Output:50V Current:8.0A Part No.:IQ24500HEx08 Technical Specification IQ24500HZx08 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 32.2 A No-Load Input Current 300 380 mA Disabled Input Current 100 160 mA Response to Input Transient Input Terminal Ripple Current 4 V 150 mA Recommended Input Fuse 40 A 50.70 V Vin min; trim up; in current limit See Figure 6 RMS Fast acting external fuse recommended OUTPUT CHARACTERISTICS Output Voltage Set Point 49.18 50 Output Voltage Regulation See Note 3 Over Line ±0.25 Over Load % ±0.25 Over Temperature Total Output Voltage Range % -1250 1250 mV 48.500 51.500 V 200 400 mV Full load 50 100 mV Full load 8 A Subject to thermal derating 11.0 A Output voltage 10% Low 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 9.0 Output DC Current-Limit Shutdown Voltage 10.0 V See Note 2 Back-Drive Current Limit while Enabled 1 20 3 4 A Negative current drawn from output Back-Drive Current Limit while Disabled 0 3 7 mA Negative current drawn from output 1000 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 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 Maximum Output Capacitance Output Voltage during Load Current Transient Step Change in Output Current (0.1 - 5 A/µs) Settling Time Output Voltage Trim Range -50 Output Voltage Remote Sense Range Output Over-Voltage Protection 56.5 59.0 EFFICIENCY 100% Load 95 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 # IQ24xxxHEXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005677 Rev. B 06/01/10 Page 6 Input:18-36V Output:50V Current:8.0A Part No.:IQ24500HEx08 100 40 95 35 90 30 Power Dissipation (W) Efficiency (%) Technical Specification 85 80 75 70 18Vin 24Vin 65 20 15 10 18Vin 24Vin 5 36Vin 36Vin 0 60 0 1 2 3 4 5 Load Current (A) 6 7 0 8 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 Load Current (A) 7 8 Figure 2: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 8.0 8.0 7.0 7.0 6.0 6.0 5.0 5.0 Iout (A) Iout (A) 25 4.0 4.0 3.0 3.0 400 LFM (2.0 m/s) 2.0 200 LFM (1.0 m/s) 1.0 400 LFM (2.0 m/s) 2.0 300 LFM (1.5 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 1.0 100 LFM (0.5 m/s) 100 LFM (0.5 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: Encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs. ambient air temperature for 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 # IQ24xxxHEXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005677 Rev. B 06/01/10 Page 7 Technical Specification IQ24xxxHEXxx Application Section BASIC OPERATION AND FEATURES CONTROL FEATURES The 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 stepdown 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. REMOTE SENSE(+) (Pins 8 and 6): The SENSE(+) inputs correct for voltage drops along the conductors that connect the converter’s output pins to the load. The series of half-brick, quarter-brick and eighth-brick converters uses the industry standard footprint and pin-out configuration. ON/OFF ON/OFF Remote Enable Circuit Negative Logic (Permanently Enabled) Note: The output over-voltage protection circuit senses the voltage across the sense leads (pins 8 and 6) to determine when it should trigger, not the voltage across the converter’s output pins (pins 9 and 5). 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: 5V ON/OFF 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. 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(_) The ON/OFF signal is active low (meaning that a low voltage turns the converter on). Figure A details four possible circuits for driving the ON/OFF pin. TTL/ CMOS ON/OFF Rtrim-down = Vin(_) Vin(_ ) Open Collector Enable Circuit ( 100% Δ ) - 2kΩ where Direct Logic Drive Δ% = | Vnominal – Vdesired Vnominal | x 100% Figure A: Various circuits for driving the ON/OFF pin. Product # IQ24xxxHEXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005677 Rev. B 06/01/10 Page 8 Technical Specification IQ24xxxHEXxx Application Section 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 Rtrim-up = ( ) x VDES + VNOM Vnominal 1.225 - 2 VDES – VNOM kΩ Trim graphs show 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: 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: If the output current exceeds the “Output DC Current Limit Inception” point*, 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 offtime. 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. The full I-V output characteristics can be seen in Figure 15. Output Over-Voltage Limit: 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 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: 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*. * See Electrical Characteristics page. Product # IQ24xxxHEXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005677 Rev. B 06/01/10 Page 9 Technical Specification IQ24xxxHEXxx Application Section APPLICATION CONSIDERATIONS 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 base-plate 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 100 ºC. 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: Figure B below provides a typical circuit diagram which details the input filtering and voltage trimming. Input Filtering and External Input Capacitance: Figure C 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 on the Electrical Specifications page. More detailed information is available in the application note titled “EMI Characteristics” on the SynQor website. 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 Pdiss max = 100 ºC - TA RTHBA This value of power dissipation can then be used in conjunction with the data shown in Figure 2 to determine the maximum load current (and power) that the converter can deliver in the given thermal condition. Output Filtering and External Output Capacitance: Figure C below shows the internal output filter components. This filter dramatically reduces output voltage ripple. However, some minimum external output capacitance is required, as specified in the Output Characteristics section on the Electrical Specifications page. No damage will occur without this capacitor connected, but peak output voltage ripple will be much higher. For convenience, Figures 3 and 4 provide Power derating curves for an encased converter without a heatsink and with a typical heatsink. Thermal Considerations: The maximum operating base-plate temperature, TB, is 100 ºC. As long as the user’s thermal system keeps TB < 100 ºC, the converter can deliver its full rated power. Vin(+) Electrolytic Capacitor External Input Filter Vin Vout(+) Vsense(+) ON/OFF Trim Vsense(_) Vin(_) Rtrim-up or Rtrim-down Cload Iload Vout(_) Figure B: Typical application circuit (negative logic unit, permanently enabled). Lin Vin(+) Vout(+) C1 C2 Regulation Stage Current Sense Isolation Stage Vin(_) Vout(-) Figure C: Internal Input and Output Filter Diagram (component values listed on specifications page). Product # IQ24xxxHEXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005677 Rev. B 06/01/10 Page 10 Technical Specification IQ24xxxHEXxx Standards & Qualification Testing Parameter Notes & Conditions STANDARDS COMPLIANCE UL 60950-1: 2003 Basic Insulation CAN/CSA-C22.2 No. 60950-1:2003 EN60950-1:2001 IEC 61000-4-2 ESD test, 8 kV - NP, 15 kV air - NP (Normal Performance) 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, 85% 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 # IQ24xxxHEXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005677 Rev. B 06/01/10 Page 11 Technical Specification IQ24xxxHEXxx Standard Mechanical Diagram 2.486 ±.020 [ 63.14 ±0.5 ] 2.00 [ 50.8 ] 1.400 [ 35.56 ] +.002 -.005 +0.05 13 -0.12 OVERALL HEIGHT .512 [ 1.000 [ 25.4 ] .700 [ 17.78 ] .400 [ 10.16 ] .243 ±.020 [ 6.17 ±0.5 ] 9 8 7 6 ] .163 [ 4.14 ] 5 .243 ±.020 [ 6.17 ±0.5 ] 2.386 ±.020 [ 60.6 ±0.5 ] ] TOP VIEW 1.90 [ 48.3 ] SIDE VIEW 1.90 [ 48.3 ] .233 ±.020 [ 5.92 ±0.5 ] 1 2 4 .543 ±.020 [ 13.79 ±0.5 ] .400 [ 10.16 ] THRU HOLE M3 (SEE NOTE 8) STANDOFFS (4) +.007 -.010 +0.17 0.69 -0.25 BOTTOMSIDE CLEARANCE .027 [ 1.400 [ 35.56 ] NOTES ] PIN DESIGNATIONS 1) Applied torque per screw should not exceed 6in-lb. (0.7 Nm). 2) 3) Pin Name Function Baseplate flatness tolerance is 0.004” (.10 mm) TIR for surface. 1 Vin(+) 2 ON/OFF Positive input voltage TTL input to turn converter on and off, referenced to Vin(–), with internal pull up. Negative input voltage 5) Pins 1-4, 6-8 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) 4 Vin(–) 5 Vout(–) Negative output voltage 6 SENSE(–) Negative remote sense1 Undimensioned components are shown for visual reference only. 7 TRIM 7) Weight: 4.9 oz (139 g) 8 SENSE(+) Positive remote sense3 8) Threaded and Non-Threaded options available 9 Vout(+) Positive output voltage 4) 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) Recommended pin length is 0.03” (0.76 mm) greater than the PCB thickness. 11) Workmanship: Meets or exceeds IPC-A-610C Class II Product # IQ24xxxHEXxx Phone 1-888-567-9596 Output voltage trim2 Notes: 1) SENSE(–) should be connected to Vout(–) either remotely or at the converter. 2) Leave TRIM pin open for nominal output voltage. 3) www.synqor.com SENSE(+) should be connected to Vout(+) either remotely or at the converter. Doc.# 005-0005677 Rev. B 06/01/10 Page 12 Technical Specification IQ24xxxHEXxx Flanged Mechanical Diagram 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, 2, 4, and 6-8 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) 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) Recommended pin length is 0.03” (0.76 mm) greater than the PCB thickness. 11) Workmanship: Meets or exceeds IPC-A-610C Class II Product # IQ24xxxHEXxx Phone 1-888-567-9596 Pin 1 Name Vin(+) 2 ON/OFF 4 Vin(–) 5 6 7 8 9 Vout(–) SENSE(–) TRIM SENSE(+) Vout(+) PIN DESIGNATIONS Function Positive input voltage TTL input to turn converter on and off, referenced to Vin(–), with internal pull up. 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. www.synqor.com Doc.# 005-0005677 Rev. B 06/01/10 Page 13 Technical Specification IQ24xxxHEXxx 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 5 0 0 H E C 0 8 N R S - G Model Number 6/6 RoHS Options (see Ordering Information) IQ24280HEw14xyz IQ24500HEw08xyz Input Voltage 18-36 18-36 Output Voltage 28 V 50 V Max Output Current 14.0 8.0 Output Current Thermal Design Performance Level Package Size Output Voltage Input Voltage The following options must be included in place of the w x y z spaces in the model numbers listed above. 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. Options Description: w x y z Enable Thermal Design Pin Style Logic C - Encased with Threaded Baseplate D - Encased with Non-Threaded Baseplate V - Encased with Flanged Baseplate N - Negative R - 0.180" Feature Set A - Standard w/ auto-recovery OVP 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: Phone: Toll Free: Fax: E-mail: Web: Address: Product # IQ24xxxHEXxx 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 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.# 005-0005677 Rev. B 06/01/10 Page 14