BQ55090QTA27NRS-G

Technical Specification BQ55090QTA27 36-55 V 55 V 9.6 V Output 240 W Max Power 2000 V dc Isolation Quarter-brick DC-DC Converter Continuous Input Transient Input The BusQor® BQ55090QTA27 bus converter is a nextgeneration, board-mountable, isolated, fixed switching frequencydc/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 BusQor series provides an isolated step down voltage from 48V to 12 or 9.6V intermediate bus with no regulation in a standard “quarter-brick” module. BusQor converters are ideal for creating the mid-bus voltage required to drive point-of-load (non-isolated) converters in intermediate bus architectures. Operational Features • High efficiency, 96 % at full rated load current at full load • Delivers full power with minimal derating - no heatsink required • Operating input voltage range: 36-55 V dc • Fixed frequency switching provides predictable EMI • No minimum load requirement Bus Converter BQ55090QTA27 Module Control Features • On/Off control referenced to input side • Inherent current share (by droop method) for high current and parallel applications. Mechanical Features • Industry standard quarter-brick pin-out configuration (two or four output pin option) • Size: 1.45” x 2.3” (36.8x58.4mm) • Total height: 0.445” (11.3mm) • Total weight: 1.5 oz (42 g) Safety Features • • • • • • • 2000 V input-to-output isolation UL 60950-1:2003 CAN/CSA-C22.2 No. 60950-1:2003 EN60950-1:2001 Needle Flame Test (IEC 695-2-2) IEC 61000-4-2 RoHS compliant (see page 14) Protection Features • Input under-voltage lockout and over-voltage shutdown protects again abnormal input voltages • Output current limit and short circuit protection (auto recovery) • Output over-voltage protection • Thermal shutdown Product # BQ55090QTA27 Phone 1-888-567-9596 Contents MECHANICAL DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 BQ55090QTA27 ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . .3-4 BQ55090QTA27 Standards and Qualifications. . . . . . . . . . . . . . . . . . . . 5 BQ55090QTA27 Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9 Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-13 ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Doc.# 005-2BQ559J Rev. C 04/02/09 Page No. www.synqor.com Page 1 Technical Specification MECHANICAL DIAGRAM 1.45 (36.8) Input: Output: Current: Package: 36-55 V 9.6 V 27A Quarter-brick Overall Height 0.16 (4.1) 0.750 (19.05) 0.600 (15.24) 0.150 (3.81) 0.445+/-0.022 (11.3+/-0.55) Bottom Side Clearance See Note 9 Top View 5 4 0.033+/-0.032 (0.84+/-0.81) 2.30 (58.4) Side View 2.00 (50.8) 1 0.600 (15.24) 0.300 (7.62) 2 3 0.145 (3.68) See Note 3 0.43 (10.8) NOTES 1) Pins 1-3 are 0.040” (1.02mm) diameter with 0.080” (2.03 mm) diameter standoff shoulders. 2) Pins 4-5 are 0.062” (1.57 mm) diameter with 0.100” (2.54 mm) diameter standoff shoulders. 3) Other pin lengths available. Recommended pin length is 0.03” (0.76mm) greater than the PCB thickness. 4) All Pins: Material - Copper Alloy Finish: Tin over Nickel plate 5) Undimensioned components are shown for visual reference only. 6) All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 7) Weight: 1.5 oz (42 g) typical 8) Workmanship: Meets or exceeds IPC-A-610C Class II 9) UL/TUV standards require a clearance of 0.04” (1.02mm) around primary areas of the module. 10) The flanged pins are designed to permit surface mount soldering (allowing to avoid the wave soldering process) through the use of the flanged pin-in-paste technique. PIN DESIGNATIONS Pin 1 2 3 4 5 Name Vin(+) ON/OFF Vin(–) Vout(–) Vout(+) Function Positive input voltage Logic control input to turn converter on and off. Negative input Negative output Positive output Product # BQ55090QTA27 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BQ559J Rev. C 04/02/09 Page 2 Technical Specification BQ55 FAMILY ELECTRICAL CHARACTERISTICS Parameter 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 Input Over-Voltage Shutdown Turn-On Voltage Threshold Turn-Off Voltage Threshold Maximum Input Current No-Load Input Current Disabled Input Current Input Reflected-Ripple Current Input Terminal-Ripple Current Recommended Input Fuse (see Note 1) Recommended External Input Capacitance Input Filter Component Values (C\L\C) 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 Disabled Maximum Output Capacitance DYNAMIC CHARACTERISTICS Output Voltage during Load Current Transient Step Change in Output Current (0.1 A/µs) Settling Time Turn-On Transient Turn-On Time (with 3mF output capacitance) Start-Up Inhibit Time Output Voltage Overshoot Input: Output: Current: Package: 36-55 V 9.6 V 27A Quarter-brick Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C ambient temperature with appropriate power derating. Specifications subject to change without notice. Min. 0 36 Typ. Max. 60 55 N/A 2000 100 125 18 Units Notes & Conditions V V V V °C °C V V V V V V V V A mA mA mA mA A µF µH\µF V %\V %\mV %\mV V mV mV A A V mA µF Continuous Continuous 100 ms transient, square wave 48 -40 -55 -2 36 48 34.3 32 2.4 59.2 56.9 55 15.0 10 140 47 1\6.6 9.6 40\3.8 5.2\500 2\200 6.550 50 20 0 48 5 10 8.5 110 30.0 20 20 RMS through 10µH inductor RMS, full load Fast blow external fuse recommended Typical ESR 0.1-0.2 Ω Internal values; see Figure E 11.000 90 36 Over sample, line, load, temperature & life 20 MHz bandwidth; see Note 2 Full load Full load at 7.2 Vout, 36Vin; Subject to thermal derating 36Vin, Output Voltage 10% Low Negative current drawn from output 9.6Vout at 27 A Resistive Load 3,000 200 100 2 200 0 3 mV µs ms ms % 50% to 75% to 50% Iout max To within 1% Vout nom Full load, Vout=90% nom. -40 °C to +125 °C; Figure F 3 mF load capacitance Product # BQ55090QTA27 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BQ559J Rev. C 04/02/09 Page 3 Technical Specification BQ55 FAMILY ELECTRICAL CHARACTERISTICS Parameter Min. Typ. 2000 30 470 125 125 125 N/A 96 96 155 178 0.8 18 18 0.8 7.5 150 10 1 TBD Input: Output: Current: Package: 36-55 V 9.6 V 27A Quarter-brick Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C ambient temperature with appropriate power derating. Specifications subject to change without notice. Max. Units Notes & Conditions V MΩ pF °C °C °C °C % % kHz V V ISOLATION CHARACTERISTICS Isolation Voltage (dielectric strength) Isolation Resistance Isolation Capacitance (input to output) TEMPERATURE LIMITS FOR POWER DERATING CURVES Semiconductor Junction Temperature Board Temperature Transformer Temperature Maximum Baseplate Temperature, Tb EFFICIENCY 100% Load 50% Load FEATURE CHARACTERISTICS Switching Frequency 131 ON/OFF Control (Option P) Off-State Voltage -1 On-State Voltage 2.4 ON/OFF Controll (Option N) Pull-Up Voltage 2.4 Pull-Up Resistance -1 Output Over-Voltage Protection Over-Temperature Shutdown OTP Trip Point 140 Over-Temperature Shutdown Restart Hysteresis RELIABILITY CHARACTERISTICS Calculated MTBF (Telcordia) TR-NWT-000332 Calculated MTBF (MIL-217) MIL-HDBK-217F Field Demonstrated MTBF See Absolute Maximum Ratings See Note 3 Package rated to 150 °C UL rated max operating temp 130 °C Application notes Figures A & B V V V °C °C Over full temp range; no load Average PCB Temperature 106 Hrs. 80% load, 200LFM, 40 °C Ta 106 Hrs. 80% load, 200LFM, 40 °C Ta 106 Hrs. See our website for details Note 1: UL’s product certification tests were carried out using 20A fast blow fuse. Fuse interruption characteristics have to be taken into account while designing input traces. User should ensure that Input trace is capable of withstanding fault currents Note 2: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: support@synqor.com) Note 3: Isolation capacitance can be added external to the module. Product # BQ55090QTA27 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BQ559J Rev. C 04/02/09 Page 4 Technical Specification BQ55090QTA27 Standards and Qualifications Parameter STANDARDS COMPLIANCE UL 60950-1:2003 CAN/CSA-C22.2 No. 60950-1:2003 EN60950-1:2001 Needle Flame Test (IEC 695-2-2) IEC 61000-4-2 Input: Output: Current: Package: 36-55 V 9.6 V 27A Quarter-brick Notes & Conditions Test on entire assembly; board & plastic components UL94V-0 compliant 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 # Units Test Conditions 32 5 5 10 5 5 5 15 pins 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 and y axis, 1 drop in 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, 85% RH, 1000 hours, continuous Vin applied except 5 min/day MIL-STD-883, method 2003 Product # BQ55090QTA27 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BQ559J Rev. C 04/02/09 Page 5 Technical Specification 100 97.0 Input: Output: Current: Package: 36-55 V 9.6 V 27A Quarter-brick 95 96.5 Efficiency (%) 90 96.0 85 Efficiency (%) 35 Vin 48 Vin 55 Vin 95.5 80 95.0 25º C 40º C 55º C 75 94.5 70 0 10 20 30 40 94.0 100 200 300 400 Load Current (A) Air Flow (LFM) Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 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). 8 14 12 Power Dissipation (W) 10 8 6 4 2 0 0 10 20 30 40 35 Vin 48 Vin 55 Vin Power Dissipation (W) 7 6 5 25º C 40º C 55º C 4 100 200 300 400 Load Current (A) Air Flow (LFM) 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). 40 30 Iout (A) 20 400 LFM (2.0 m/s) 10 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 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 curve vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM with air flowing from pin 1 to pin 3 (nominal input voltage). Product # BQ55090QTA27 Phone 1-888-567-9596 Figure 6: Thermal plot of converter at 30 A load current (268 W) with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter from pin 1 to pin 3 (nominal input voltage). Doc.# 005-2BQ559J Rev. C 04/02/09 Page 6 www.synqor.com Technical Specification 40 Input: Output: Current: Package: 36-55 V 9.6 V 27A Quarter-brick 30 Iout (A) 20 400 LFM (2.0 m/s) 10 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 0 25 40 55 70 85 Ambient Air Temperature (ºC) Semiconductor junction temperature is within 1°C of surface temperature Figure 7: Maximum output power derating curves vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM with air flowing across the converter from output to input (nominal input voltage). Figure 8: Thermal plot of converter at 30 A load current (268 W) 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) (1 ms/div). Load cap: 3 mF output capacitance. Input voltage pre-applied. Ch 1: Vout (5 V/ div), Ch 2: ON/OFF input (2 V/div). Figure 10: Turn-on transient at zero load (1 ms/div). Load cap: 3 mF output capacitance. Ch 1: Vout (5 mV/div), Ch 2: ON/OFF input (2 V/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 tantalum cap and 1µF ceramic cap. Ch 1: Vout (200mV/div), Ch 2: Iout (10A/div). Product # BQ55090QTA27 Phone 1-888-567-9596 Figure 12: Output voltage response to step-change in load current (50%75%-50% of Iout(max): dI/dt = 1A/µs). Load cap: 470µF, 30 mΩ ESR tantalum cap and 1µF ceramic cap. Ch 1: Vout (200mV/div), Ch 2: Iout (10A/div). Doc.# 005-2BQ559J Rev. C 04/02/09 Page 7 www.synqor.com Technical Specification See Fig. 15 Input: Output: Current: Package: 36-55 V 9.6 V 27A Quarter-brick source impedance 10 µH See Fig. 14 See Fig. 16 iS VSOURCE iC DC-DC Converter 1 µF VOUT 15 µF, electrolytic capacitor 47 µF,