Technical Specification PQ60050HPx45 48V 5.0V 45A 225W 2000V dc Half-brick Input Output Current Max Power Isolation DC-DC Converter The PQ60050HPB45 PowerQor Peta converter is a nextgeneration, board-mountable, isolated, fixed switching frequency DC/DC converter that uses synchronous rectification to achieve extremely high conversion efficiency. The power dissipated by the converter is so low that a heatsink is not required, which saves cost, weight, height, and application effort. The Peta series converters offer industry leading output power for a standard half-brick module. In addition to typical single ouput voltage applications, the Peta units can also be used to provide a wide input range Intermediate Bus for IBA systems. RoHS compliant (see last page). Protection Features • Input under-voltage lockout disables converter at low Vin conditions • Output current limit & Short circuit protection • Active back bias limit prevents damage to converter from external load induced pre-bias • Output over-voltage protection • Thermal shutdown protects converter from abnormal conditions PQ60050HPx45 Model Operational Features • Ultra-high efficiency, 91% at full rated load current • Delivers up to 225W of output power (45A) with minimal derating - no heatsink required • Wide input voltage range: 35-75V • Input voltage transient capability: 100V, 100ms • Fixed frequency switching provides predictable EMI Mechanical Features • Industry standard pin-out configuration • Standard Size Open Frame:2.40" x 2.30" (61 x 58.4mm) • Total Open Frame height only 0.43” (10.8mm), permits better airflow and smaller card pitch • Open Frame Weight: 2.6 oz. (75g) • Flanged pins designed to permit surface mount soldering (avoid wave solder) using FPiP technique Control Features • On/Off control referenced to input side (Positive & Neg logic options) • Remote sense for Vout compensates for output distribution drops • Output voltage trim permits custom voltages and voltage margining Contents Safety Features • UL 60950-1:2007 • CAN/CSA-C22.2 No. 60950-1:2007 • EN60950-1:A12:2011 Product # PQ60050HPx45 Phone 1-888-567-9596 Page No. Mechanical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Standards & Qualifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Technical Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Applications Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 www.synqor.com Doc.# 050-2HP650K Rev. D 10/09/12 Page 1 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Open Frame Mechanical Diagram Top View 2.40 (61.0) Side View 1.400 (35.56) Bottom View 1.400 [ 35.56 ] Max. Height 0.43 1.000 (25.40) 1.000 [ 25.40] (10.8) 0.700 (17.78) 0.700 [ 17.78] 0.400 (10.16) 0.400 [ 10.16] 0.145 (3.68) See Note 3 9 8 7 6 5 2.30 1.900 (58.4) [ 48.26 ] 0.19 [ 4.8 ] 0.19 (4.8) 1 0.50 (12.7) 0.400 (10.16) 1.400 (35.56) 2 4 0.037+/-0.029 PIN Farside Typical (0.94+/-0.73) Bottomside Clearance 0.50 [12.7 ] See Note 9 0.400 [10.16] 1.400 [ 35.56] NOTES 1) 2) 3) 4) 5) 6) 7) 8) PIN DESIGNATIONS Pins 1, 2, 4, 6-8 are 0.040” (1.02mm) diameter with 0.080" (2.03mm) Dia. Standoff shoulders Pins 5 and 9 are 0.080” (2.03 mm) diameter with .125" (3.18mm) Dia. Standoff shoulders Other pin extension lengths available. All Pins: Material - Copper Alloy Finish: Matte Tin over Nickel plate Undimensioned components are shown for visual reference only. All dimensions in inches (mm) Open Frame Weight: 2.6 oz. (75g) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) Product # PQ60050HPx45 Phone 1-888-567-9596 Pin Name Function 1 Vin(+) Positive input voltage 2 ON/OFF 4 5 6 7 8 9 Vin(–) Vout(–) SENSE(–) TRIM SENSE(+) Vout(+) www.synqor.com TTL input to turn converter on and off, referenced to Vin(–), with internal pull up. Negative input voltage Negative output voltage Return remote sense Output voltage trim Positive remote sense Positive output voltage Doc.# 050-2HP650K Rev. D 10/09/12 Page 2 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Baseplated Mechanical Diagram Top View Side View Bottom View 2.40 [ 61.0 ] 1.400 [ 35.56 ] 0.506 ± 0.025 [ 12.85 ± 0.63 ] 2.000 [ 50.80] Overall Height 0.20 [ 5.1 ] 0.035 ± 0.029 1.000 [ 25.40] 0.700 [ 17.78] 0.400 [ 10.16] [ 0.89 ± 0.73] Bottomside 9 8 7 6 Clearance 5 2.30 [ 58.4 ] 1.900 1.900 [ 48.26 ] [ 48.26 ] 0.20 0.19 [ 5.1] [ 4.8 ] 1 2 4 See Note 1 0.145 [ 3.68 ] 0.50 [12.7 ] See Note 6 0.400 [10.16] 1.400 [ 35.56] NOTES PIN DESIGNATIONS 1) M3 screws used must not exceed .085" (2.16mm) depth below the surface of the base plate 2) Applied torque per screw shall not exceed 6 IN-LB (0.68Nm) 3) Base plate flatness tolerance is .004" (.10mm) TIR for surface 4) Pins 1, 2, 4, & 6 - 8 are 0.040" (1.02mm) Dia. with 0.080" (2.03mm) Dia. Standoff shoulders 5) Pins 5 & 9 are 0.080" (2.03mm) Dia. with 0.125" (3.18mm) Dia. Standoff shoulders 6) Other pin extension lengths available. 7) All Pins: Material - Copper Alloy Finish (RoHS 6/6) - Matte Tin over Nickel plate 8) Undimensioned components are shown for visual reference only. 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) 10) Weight: 3.94 oz (111.6 g) typical Product # PQ60050HPx45 Phone 1-888-567-9596 Pin Name Function 1 Vin(+) Positive input voltage 2 ON/OFF 4 5 6 7 8 9 Vin(–) Vout(–) SENSE(–) TRIM SENSE(+) Vout(+) www.synqor.com TTL input to turn converter on and off, referenced to Vin(–), with internal pull up. Negative input voltage Negative output voltage Return remote sense Output voltage trim Positive remote sense Positive output voltage Doc.# 050-2HP650K Rev. D 10/09/12 Page 3 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Technical Specifications PQ60050HPx45 Electrical Characteristics Ta = 25 °C, airflow rate = 300 LFM, Vin = 48V 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. ABSOLUTE MAXIMUM RATINGS Input Voltage Non-Operating Operating Operating Transient Protection Isolation Voltage Input to Output Operating Temperature Storage Temperature Voltage at ON/OFF input pin INPUT CHARACTERISTICS Operating Input Voltage Range Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Voltage Hysteresis Maximum Input Current No-Load Input Current Disabled Input Current Inrush Current Transient Rating Response to Input Transient Input Reflected Ripple Current Input Terminal Ripple Current Recommended Input Fuse Input Filter Component Values (C1\L\C2) Recommended External Input Capacitance OUTPUT CHARACTERISTICS Output Voltage Set Point Output Voltage Regulation Over Line Over Load Over Temperature Total Output Voltage Range Output Voltage Ripple and Noise Peak-to-Peak RMS Operating Output Current Range Output DC Current-Limit Inception Output DC Current-Limit Shutdown Voltage Back-Drive Current Limit while Enabled Back-Drive Current Limit while Disabled Maximum Output Capacitance EFFICIENCY 100% Load 50% Load Product # PQ60050HPx45 Typ. -1 -40 -55 -2 Max. Units Notes & Conditions 100 80 100 2000 100 125 18 V V V V °C °C V 35 48 75 V 31.5 29.5 2.2 33.3 31.0 2.3 34.4 32.4 2.4 7.1 120 5 0.04 V V V A mA mA A2s mV mA mA A μF\μH\μF µF 100 2 350 5 200 20 1\3\6.4 47 4.95 5.00 5.05 V ±0.05 \ 3 ±0.1 \ 5 ±15 ±0.1 \ 5 ±0.2 \ 10 ±30 5.15 %\mV %\mV mV V 60 10 45 55 mV mV A A V A mA µF 4.85 Phone 1-888-567-9596 30 5 0 50 1.5 0 53 3.5 2.5 20 3.8 50 34,000 91 92 www.synqor.com % % Continuous Continuous 100ms transient, square wave Basic insulation level, Pollution degree 2 100% Load, 35V Vin 1000V/ms input transient RMS thru 10μH inductor; Figs. 13 & 15 RMS; Figs. 13 & 14 Fast blow external fuse recommended Internal values, see Figure E Typical ESR 0.1-0.2Ω; see Figure 13 Factory pre-set with Sense(+), Sense(-) open Over sample, line, load, temperature & life 20MHz bandwidth; Fig. 13 & 16 Full Load, see Figures 13 & 16 Full Load, see Figures 13 & 16 Subject to thermal derating; Figs. 5-8 Output Voltage 10% Low; Fig. 17 Negative current drawn from output Negative current drawn from output 5.0Vout at 45A Resistive Load Figures 1 - 4 Figures 1 - 4 Doc.# 050-2HP650K Rev. D 10/09/12 Page 4 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Technical Specifications PQ60050HPx45 Electrical Characteristics (continued) Ta = 25 °C, airflow rate = 300 LFM, Vin = 48V 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 DYNAMIC CHARACTERISTICS Input Voltage Ripple Rejection 60 dB 120 Hz; Fig. 20 Output Voltage during Load Current Transient Step Change in Output Current (0.1A/µs) 200 mV 50% to 75% to 50% Iout max, 470 μF load cap Step Change in Output Current (5A/µs) 300 mV 50% to 75% to 50% Iout max, 470 μF load cap Settling time 100 μs To within 1% Vout nom Turn-On Transient Turn-On Time 22 30 ms Full load, Vout=90% nom; Figures 9 & 10 Start-Up Inhibit Time 180 200 240 ms -40°C to +125°C; Figure A Output Voltage Overshoot 0 % 10,000 μF load capacitance, Iout = 0A ISOLATION CHARACTERISTICS Isolation Voltage (dielectric strength) 2000 V Isolation Resistance 30 MΩ Isolation Capacitance (input to output) 3300 pF 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 See Figures 5 - 8 for derating curves FEATURE CHARACTERISTICS Switching Frequency 198 220 242 kHz Regulation stage and Isolation stage ON/OFF Control (Option P) Off-State Voltage -2 0.8 V On-State Voltage 2.7 18 ON/OFF Control (Option N) Off-State Voltage 2.7 18 V On-State Voltage -2 0.8 ON/OFF Control (Either Option) Application notes; Figures A & B Pull-Up Voltage Vin/6 15.00 V Pull-Up Resistance 42 kΩ Output Voltage Trim Range -20 +10 % Measured across Pins 9 & 5; Fig C & 23 Output Voltage Remote Sense Range Measured across Pins 9 & 5 Output Over-Voltage Protection 115 120 125 % Over Full Temperature Range; % of nominial Vout Over-Temperature Shutdown 120 °C Average PCB Temperature Over-Temperature Shutdown Restart Hysteresis 10 °C Load Current Scale Factor 1200 See App Note: Output Load Current Calc. RELIABILITY CHARACTERISTICS Calculated MTBF (Telcordia) 2.13 106 Hrs. TR-NWT-000332; 75% load, 300LFM, 40°C Ta Calculated MTBF (MIL-217) 1.3 106 Hrs. MIL-HDBK-217F; 75% load, 300LFM, 40°C Ta Field Demonstrated MTBF 106 Hrs. See our website for details Note 1: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected]) Note 2: Higher values of isolation capacitance can be added external to the module. Product # PQ60050HPx45 Phone 1-888-567-9596 www.synqor.com Doc.# 050-2HP650K Rev. D 10/09/12 Page 5 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Technical Specifications Standards Compliance & Qualification Testing Parameter Notes & Conditions STANDARDS COMPLIANCE UL 60950-1:2007 Basic insulation CAN/CSA-C22.2 No. 60950-1:2007 EN60950-1:A12:2011 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 QUALIFICATION TESTING Life Test Vibration Mechanical Shock Temperature Cycling Power/Thermal Cycling Design Marginality Humidity Solderability Product # PQ60050HPx45 # Units 32 5 5 10 5 5 5 15 pins Phone 1-888-567-9596 Test Conditions 95% rated Vin and load, units at derating point, 1000 hours 10-55 Hz sweep, 0.060" total excursion, 1 min./sweep, 120 sweeps for 3 axis 100g minimum, 2 drops in x, y and z axis -40 °C to 100 °C, unit temp. ramp 15 °C/min., 500 cycles Toperating = min to max, Vin = min to max, full load, 100 cycles Tmin-10 °C to Tmax+10 °C, 5 °C steps, Vin = min to max, 0-105% load 85 °C, 95% RH, 1000 hours, continuous Vin applied except 5 min/day MIL-STD-883, method 2003 www.synqor.com Doc.# 050-2HP650K Rev. D 10/09/12 Page 6 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick 100 95 95 94 90 93 Efficiency (%) Efficiency (%) Technical Figures 85 80 35 Vin 75 75 Vin 0.0 4.5 9.0 13.5 18.0 22.5 27.0 31.5 36.0 40.5 91 25 C 90 48 Vin 70 92 40 C 55 C 89 0 45.0 100 400 500 Figure 2: Efficiency at nominal output voltage and 60% rated power vs. airflow rate for ambient air temperatures of 25°C, 40°C, and 55°C (nominal input voltage). 24 14 22 13 20 18 Power Dissipation (W) Power Dissipation (W) 300 Air Flow (LFM) Load Current (A) Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 200 16 14 12 10 8 6 35 Vin 4 75 Vin 0 0.0 4.5 9.0 13.5 18.0 22.5 27.0 31.5 36.0 40.5 11 10 9 25 C 8 48 Vin 2 12 40 C 55 C 7 0 45.0 100 200 300 400 500 Air Flow (LFM) Load Current (A) Figure 3: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. Figure 4: Power dissipation at nominal output voltage and 60% rated power vs. airflow rate for ambient air temperatures of 25°C, 40°C, and 55°C (nominal input voltage). 45 40 35 Iout (A) 30 25 20 15 400 LFM (2.0 m/s) 10 200 LFM (1.0 m/s) 300 LFM (1.5 m/s) 100 LFM (0.5 m/s) 5 50 LFM (0.25 m/s) 0 0 25 40 55 70 85 Semiconductor junction temperature is within 1°C of surface temperature Ambient Air Temperature (oC) Figure 5: Maximum output power derating curves vs. ambient air temperature for airflow rates of 50 LFM through 400 LFM with air flowing from input to output (nominal input voltage). Product # PQ60050HPx45 Phone 1-888-567-9596 Figure 6: Thermal plot of converter at 39A load current (195W) with 55°C air flowing at the rate of 200 LFM. Air is flowing from input to output (nominal input voltage). www.synqor.com Doc.# 050-2HP650K Rev. D 10/09/12 Page 7 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Technical Figures 45 40 35 Iout (A) 30 25 20 15 400 LFM (2.0 m/s) 10 200 LFM (1.0 m/s) 300 LFM (1.5 m/s) 100 LFM (0.5 m/s) 5 50 LFM (0.25 m/s) 0 0 25 40 55 70 85 Ambient Air Temperature (oC) Figure 7: Maximum output power derating curves vs. ambient air temperature for airflow rates of 50 LFM through 400 LFM with air flowing from output to input (nominal input voltage). Figure 8: Thermal plot of converter at 36A load current (180W) with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter from output to input (nominal input voltage). Figure 9: Turn-on transient at full load (resistive load) (10 ms/div). Input voltage pre-applied. Top Trace: Vout (2V/div). Bottom Trace: ON/OFF input(5V/div) Figure 10: Turn-on transient at zero load (10 ms/div). Top Trace: Vout (2V/div). Bottom Trace: ON/OFF input (5V/div) Figure 11: Output voltage response to step-change in load current (50%-75%50% of Iout(max); dI/dt = 0.1A/µs). Load cap: 15µF, 450mOhm ERS tantalum cap and 1µF ceramic cap. Top trace: Vout (200mV/div). Bottom trace: Iout (20A/ div). Figure 12: Output voltage response to step-change in load current (50%-75%50% of Iout(max): dI/dt = 5A/µs). Load cap: 470µF, 15mOhm ESR tantalum cap and 1µF ceramic cap. Top trace: Vout (200mV/div). Bottom trace: Iout (20A/div). Product # PQ60050HPx45 Phone 1-888-567-9596 www.synqor.com Doc.# 050-2HP650K Rev. D 10/09/12 Page 8 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Technical Figures See Fig. 15 10 µ H See Fig. 14 source impedance See Fig. 16 iS iC V SOURCE DC/DC Converter V OUT 1 µF 47 µF, <1Ω ESR 15 µF, 450mΩ ESR ceramic capacitor electrolytic capacitor tantalum capacitor Figure 13: Test set-up diagram showing measurement points for Input Terminal Ripple Current (Figure 14), Input Reflected Ripple Current (Figure 15) and Output Voltage Ripple (Figure 16). Figure 14: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 10µH source impedance and 47µF electrolytic capacitor (200mA/div). (See Figure 13). Figure 15: Input reflected ripple current, is, through a 10 µH source inductor at nominal input voltage and rated load current (5 mA/div). (See Figure 13). Figure 16: Output voltage ripple at nominal input voltage and rated load current (10 mV/div). Load capacitance: 1µF ceramic capacitor and one 15µF tantalum capacitor. Bandwidth: 20 MHz. (See Figure 13). 7 Output Voltage (V) 6 5 4 3 2 35 V 48 V 1 75 V 0 0 5 10 15 20 25 30 35 40 45 50 55 60 Load Current (A) Figure 17: Output voltage vs. load current showing typical current limit curves and converter shutdown points. Product # PQ60050HPx45 Phone 1-888-567-9596 Figure 18: Load current (20A/div) as a function of time when the converter attempts to turn on into a 1 mΩ short circuit. Top trace (2.5ms/div) is an expansion of the on-time portion of the bottom trace. www.synqor.com Doc.# 050-2HP650K Rev. D 10/09/12 Page 9 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Technical Figures 0.1 0 0.01 35 Vin 48 Vin 75 Vin 0.001 Forward Transmission (dB) Output Impedance (Ω) -10 -20 -30 -40 35 Vin -50 48 Vin 75 Vin -60 -70 -80 -90 0.0001 10 100 1,000 10,000 -100 100,000 10 100 Hz 1,000 10,000 100,000 Hz Figure 19: Magnitude of incremental output impedance (Zout = vout/iout) for minimum, nominal, and maximum input voltage at full rated power. Figure 20: Magnitude of incremental forward transmission (FT = vout/vin) for minimum, nominal, and maximum input voltage at full rated power. 0 100 -20 35 Vin -30 48 Vin 75 Vin -40 Input Impedance (Ω) Reverse Transmission (dB) -10 10 35 Vin 48 Vin 75 Vin 1 -50 -60 10 100 1,000 10,000 0.1 100,000 10 Hz Figure 21: Magnitude of incremental reverse transmission (RT = iin/iout) for minimum, nominal, and maximum input voltage at full rated power. 100 1,000 Hz 10,000 100,000 Figure 22: Magnitude of incremental input impedance (Zin = vin/iin) for minimum, nominal, and maximum input voltage at full rated power. 10 9 Vout Trim-up (%) 8 7 6 5 4 3 2 1 0 40.0 100% Load 50% Load 0% Load 39.5 39.0 38.5 38.0 37.5 37.0 36.5 36.0 35.5 35.0 Input Voltage (V) Figure 23: Achievable trim-up percentage vs. input voltage at output loads of 0% ,50% and full load. Product # PQ60050HPx45 Phone 1-888-567-9596 www.synqor.com Doc.# 050-2HP650K Rev. D 10/09/12 Page 10 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Applications Section BASIC OPERATION AND FEATURES CONTROL FEATURES The PowerQor series converter uses a two-stage power conversion topology. The first stage is a buck-converter that 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(-). There are two versions of the converter that differ by the sense of the logic used for the ON/OFF input. In the positive logic version, the ON/OFF input is active high (meaning that a high turns the converter on). In the negative logic version, the ON/OFF signal is active low (meaning that a low turns the converter on). Figure A details five possible circuits for driving the ON/OFF pin. Figure B is a detailed look of the internal ON/OFF circuitry. 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. 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. A remote connection at the load can adjust for a voltage drop only as large as that specified in this datasheet, that is [Vout(+) - Vout(-)] – [Vsense(+) - Vsense(-)] ≤ Sense Range % x Vout Pins 8 and 6 must be connected for proper regulation of the output voltage. 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. Both the first stage and the second stage switch at a fixed frequency for predictable EMI performance. Rectification of the transformers output is accomplished with synchronous rectifiers. These devices, which are MOSFETs with a very low on-state resistance, dissipate far less energy than Schottky diodes. This is the primary reason that the PowerQor converter has such high efficiency, even at very low output voltages and very high output currents. Dissipation throughout the converter is so low that it does not require a heatsink for operation. Since a heatsink is not required, the PowerQor converter does not need a metal baseplate or potting material to help conduct the dissipated energy to the heatsink. The PowerQor converter can thus be built more simply and reliably using high yield surface mount techniques on a PCB substrate. The PowerQor series of half-brick, quarter-brick and eighthbrick converters uses the industry standard footprint and pin-out configuration. ON/OFF ON/OFF ON/OFF Vin( _) Vin( _) Vin( _) Negative Logic (Permanently Enabled) 5V ON/OFF Positive Logic (Permanently Enabled) Remote Enable Circuit TTL/ CMOS ON/OFF 5k 274k ON/OFF 50k 50k Vin( _) Vin( _) Open Collector Enable Circuit Direct Logic Drive Figure A: Various circuits for driving the ON/OFF pin Product # PQ60050HPx45 Phone 1-888-567-9596 TTL 100pF Vout(-) Figure B: Internal ON/OFF pin circuitry www.synqor.com Doc.# 050-2HP650K Rev. D 10/09/12 Page 11 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Applications Section 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. To decrease the output voltage, the user should connect a resistor between Pin 7 and Pin 6 (SENSE(-) input). For a desired decrease of the nominal output voltage, the value of the resistor should be: Rtrim-down = ( 100% Δ ) - 2(kΩ) where Δ% = | Vnominal – Vdesired Vnominal | x 100% To decrease the output voltage, the user should connect a resistor between Pin 7 and Pin 6 (SENSE(-) input). For a desired decrease of the nominal output voltage, the value of the resistor should be: Rtrim-up = ( ) x VDES + VNOM Vnominal 1.225 - 2 VDES – VNOM kΩ 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 overvoltage 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 bypassed 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. Trim Resistance (kOhms) 10,000 1,000 100 10 1 0 2 4 6 8 % Increase in Vout 10 12 14 16 % Decrease in Vout 18 20 Protection Features Input Under-Voltage Lockout: The converter is designed to turn off when the input voltage is too low, helping avoid an input system instability problem, described in more detail in the application note titled “Input System Instability”. The lockout circuitry is a comparator with DC hysteresis. When the input voltage is rising, it must exceed the typical TurnOn Voltage Threshold value (listed on the specification page) 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. Input Over-Voltage Shutdown: Available on PQ48 models only. The converter turns off when the input voltage is too high, allowing the converter to withstand an input voltage as high as 100V without destruction. The shutdown circuitry is a comparator with DC hysteresis. When the input voltage exceeds the typical Input Over-Voltage Shutdown value, the converter will turn off. Once the converter is off, it will turn back on when the input voltage falls below the minimum Input Over-Voltage Shutdown value. Output Current Limit: The maximum current limit remains constant as the output voltage drops. However, once the impedance of the short across the output is small enough to make the output voltage drop below the specified Output DC Current-Limit Shutdown Voltage, the converter turns off. The converter then enters a “hiccup mode” where it repeatedly turns on and off at a 5 Hz (nominal) frequency with a 5% duty cycle until the short circuit condition is removed. This prevents excessive heating of the converter or the load board. 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 200 ms the converter will automatically restart. 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 Over-Temperature 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. Figure C: Trim Graph 5V Module. Product # PQ60050HPx45 Phone 1-888-567-9596 www.synqor.com Doc.# 050-2HP650K Rev. D 10/09/12 Page 12 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Applications 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 web site (www.synqor.com) which provides an understanding of why this instability arises, and shows the preferred solution for correcting it. Application Circuits: Figure D presented below provides a typical circuit diagram which details the input filtering and voltage trimming. Input Filtering and External Input Capacitance: Figure E below provides a diagram showing 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. More detailed information is available in the application note titled “EMI Characteristics” on the SynQor website. Vout(+) Vin(+) Vin External Input Filter Electrolytic Capacitor Vsense(+) 47µF Trim ON/OFF Vsense(_) Vin(_) Rtrim-up or Rtrim-down Cload Iload Vout(_) Figure D: Typical application circuit (negative logic unit, permanently enabled). L Vin(+) C2 C1 Vin(_) Figure E: Internal Input Filter Diagram (component values listed on page 3). Product # PQ60050HPx45 Phone 1-888-567-9596 www.synqor.com Doc.# 050-2HP650K Rev. D 10/09/12 Page 13 Input: 35-75V Output: 5.0V Current: 45A Package: Half-brick Applications Section Startup Inhibit Period: The Startup Inhibit Period ensures that the converter will remain off for approximately 200ms when it is shut down for any reason. When an output short is present, this generates a 5Hz "hiccup mode," which prevents the converter from overheating. In all, there are seven ways that the converter can be shut down, initiating a Startup Inhibit Period: • • • • • • • Input Under-Voltage Lockout. Input Over-Voltage Shutdown (not present in Quarter-brick) Output Over-Voltage Protection Over Temperature Shutdown Current Limit Short Circuit Protection Turned off by the ON/OFF input Figure F shows three turn-on scenarios, where a Startup Inhibit Period is initiated at t0, t1, and t2: Before time t0, when the input voltage is below the UVL threshold, the unit is disabled by the Input Under-Voltage Lockout feature. When the input voltage rises above the UVL threshold, the Input Under-Voltage Lockout is released, and a Startup Inhibit Period is initiated. At the end of this delay, the ON/OFF pin is evaluated, and since it is active, the unit turns on. At time t1, the unit is disabled by the ON/OFF pin, and it cannot be enabled again until the Startup Inhibit Period has elapsed. When the ON/OFF pin goes high after t2, the Startup Inhibit Period has elapsed, and the output turns on within the typical Turn-On Time. Vin Under-Voltage Lockout Turn-On Threshold ON/OFF (pos logic) ON OFF OFF ON ON 20ms (typical turn on time) Vout 200ms 200ms (typical start-up inhibit period) t0 t1 200ms t t2 Figure F: Startup Inhibit Period (turn-on time not to scale) Product # PQ60050HPx45 Phone 1-888-567-9596 www.synqor.com Doc.# 050-2HP650K Rev. D 10/09/12 Page 14 Technical Specification PQ60050HPx45 Ordering Information 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. PQ 6 0 1 2 0 H P A 0 8 N R S - G 6/6 RoHS Options (see Ordering Information) Model Number Input Voltage PQ60050HPw45xyz-G 35-75V Output Voltage 5V Max Output Current 45A Output Current Thermal Design The following options must be included in place of the w x y z spaces in the model numbers listed above. Performance Level Options Description: w x y z Thermal Design Enable Logic Pin Style Package Size Output Voltage A - Open Frame B - Threaded Baseplated Input Voltage N - Negative P - Positive 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. K - 0.110" N - 0.145" R - 0.180" Y - 0.250" Feature Set S - Standard Not all combinations make valid part numbers, please contact SynQor for availability. See the Product Summary web page for more options. Application Notes A variety of application notes and technical white papers can be downloaded in pdf format from our website. 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]. 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 # PQ60050HPx45 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 Warranty SynQor offers a three (3) 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.# 050-2HP650K Rev. D 10/09/12 Page 15