BQ55090ETA27

Technical S pecification BQ55090ETA27 35-55V Input I nput 9.6V Output 27A Current 2000Vdc Isolation Eighth-brick DC Bus Conver ter The BusQor® BQ55090ETA27 bus converter is a next-generation, board-mountable, isolated, fixed switching frequency D C / D C c o n ve r t e r t h a t u s e s s y n c h r o n o u s r e c t i f i c a t i o n t o 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 a 9.6V intermediate bus with no regulation in a standard “eighth-brick” module. BusQor converters are ideal for creating the mid-bus voltage required to drive pointof-load (non-isolated) converters in intermediate bus architectures. RoHS compliant (see page 12 ). Bus Conver ter Operational Features • Ultra-high efficiency, >95% at full rated load current • Delivers up to 27 amps of output current with minimal derating - no heatsink required • Input voltage range: 35V – 55V provides 6.5-11V bus for distributed power architectures • Fixed frequency switching provides predictable EMI performance BQ55090ETA27 Module Pr otection Features • Input under-voltage lockout and over-voltage shutdown protects against abnormal input voltages • Output current limit and short circuit protection (auto recovery) • Output over-voltage protection • Thermal shutdown Mechanical Features • Industry standard eighth-brick bus converter pin-out • Industry standard size: 0.90” x 2.3” x .484” (22.9x58.4x11.76mm) • Total weight: 0.7 oz. (20 grams) • Flanged pins designed to permit surface mount soldering (avoid wave solder) using FPiP technique Safety Features • 2000V, 30 MW input-to-output isolation • UL/cUL 60950-1 recognized (US & Canada), basic insulation rating • TUV certified to EN60950-1 • Meets 72/23/EEC and 93/68/EEC directives • Meets UL94V-0 flammability requirements Contr ol Features • On/Off control referenced to input side (positive and negative logic options available) Product # BQ55090ETA27 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BE559C Rev. B 10/10/06 Page 1 Technical Specification MECHANICAL DIAGRAM 0.140 (3.60) Input: Output: Current: Package: 2.300 (58.40) 35-55 V 9.6 V 27 A Eighth-brick 0.150 (3.80) 2.000 (50.80) Top View 0.900 (22.90) 0.300 (7.62) 0.600 (15.24) Side View Bottom side Clearance See Note 9 0.076 ±0.028 (1.93 ±0.71) Lowest Component Load Board 0.180 (4.57) See Note 3 Flanged Pin See Note 10 0.484 ±0.020 (12.29 ±0.50) NOTES 1) Pins 1-3 are 0.040” (1.02mm) diameter with 0.080” (2.03 mm) diameter standoff shoulders. 2) Pins 4 and 5 are 0.062” (1.57 mm) diameter with 0.100” (2.54 mm) diameter standoff shoulders. 3) Other pin extension lengths available. Recommended pin length is 0.03” (0.76mm) greater than the PCB thickness. 4) All Pins: Material - Copper Alloy Finish (RoHS 5/6) - Tin/Lead over Nickel plate Finish (RoHS 6/6) - Matte Tin over Nickel plate 5) Unmeasured 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: 0.7 oz. (20 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. Refer to section on Keep Out Areas under Application Considerations for details. 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 No. 1 2 3 4 5 Name Vin(+) ON/OFF Vin(-) Vout(-) Vout(+) Function Input Positive (35V - 55V) Logic control input to turn converter on and off. Input Negative Output Negative Output Positive Product # BQ55090ETA27 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BE559C Rev. B 10/10/06 Page 2 Technical Specification BQ55090ETA27 ELECTRICAL CHARACTERISTICS Parameter ABSOLUTE MAXIMUM RATINGS Input: Output: Current: Package: 35-55 V 9.6 V 27 A Eighth-brick TA=25°C, airflow rate=300 LFM, Vin=48Vdc 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. Typ. Max. 60 56 2000 100 125 18 48 34.3 32 2.4 59.2 56.9 15 3.8 250 1.5\2.0 47 9.60 40/3.8 4.8/460 2/200 100 20 34 0 +10 10 55 Units V V V °C °C V V V V V V V A A mA A 2s mA mA A µH\µF µF V %\V %\mV %\mV V mV mV A A V % mA µF mV µs ms ms % % % Notes & Conditions Continuous Continuous Basic insulation, Pollution Degree 2 Input Voltage Non-Operating Operating Isolation Voltage (input to output) Operating Temperature Storage Temperature Voltage at ON/OFF input pin Operating Input Voltage Range Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Voltage Hysteresis Input Over-Voltage Shutdown Turn-Off Voltage Threshold Turn-On Voltage Threshold Maximum Input Current No-Load Input Current Disabled Input Current Inrush Current Transient Rating Input Reflected Ripple Current Input Terminal Ripple Current Recommended Input Fuse Input Filter Component Values (L\C) Recommended External Input Capacitance Output Voltage Set Point Output Voltage Regulation Over Line Over Load Over Temperature Total Output Voltage Range Output Voltage Ripple and Noise1 Peak-to-Peak RMS Operating Output Current Range Output DC Current-Limit Inception Output DC Current-Limit Shutdown Voltage Current Share Accuracy (3 units paralleled) Back-Drive Current Limit while Disabled Maximum Output Capacitance Output Voltage during Load Current Transient For a Step Change in Output Current (0.1A/µs) Settling Time Turn-On Transient Turn-On Time Start-Up Inhibit Time Output Voltage Overshoot 100% Load 50% Load -40 -55 -2 35 INPUT CHARACTERISTICS 5.8 0.10 30 0.1 7.0 20 100% Load, 35 Vin RMS through 10µH inductor; Figures 12 & 14 RMS, full load; Figures 13 Fast blow external fuse recommended Internal values Typical ESR 0.1-0.2W, see Figure 12 48Vin, no load Figure 4 Figure 4 Figure 4 Over sample, line, load, temperature & life 20MHz bandwidth; Figure 12 & 15 Full Load; see Figures 12 & 15 Full Load; see Figures 12 & 15 Subject to thermal derating; Figures 5 & 7 Output Voltage 10% Low; Figure 16 % of rated output current Negative current drawn from output 9.6Vout at 27A Resistive Load 50% to 75% to 50% Iout max; Figure 11 To within 1% Vout nom Full load, Vout=90% nom.; Figures 9 & 10 -40°C to +125°C 2,500 µF load capacitance, Iout = 0A Figures 1 & 3 Figures 1 & 3 Package rated to 150°C UL rated max operating temp 130°C See Figures 5 & 7 for derating curves OUTPUT CHARACTERISTICS 6.3 11.0 120 40 27 0 3,000 DYNAMIC CHARACTERISTICS 150 200 1 20 0 95.7 96.1 125 125 125 2000 30 EFFICIENCY TEMPERATURE LIMITS FOR POWER DERATING CURVES Semiconductor Junction Temperature Board Temperature Transformer Temperature Isolation Voltage (dielectric strength) Isolation Resistance °C °C °C V MW ISOLATION CHARACTERISTICS Note 1: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: support@synqor.com) Product # BQ55090ETA27 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BE559C Rev. B 10/10/06 Page 3 Technical Specification ELECTRICAL CHARACTERISTICS (Continued) Parameter P FEATURE CHARACTERISTICS Input: Output: Current: Package: 35-55 V 9.6 V 27 A Eighth-brick Min. 120 -1.0 2.4 2.4 -1.0 Typ. 150 Max. 180 0.8 18 18 0.8 Units kHz V V V V V kW V °C °C 6 Notes & Conditions Switching Frequency ON/OFF Control (Option P) Off-State Voltage On-State Voltage ON/OFF Control (Option N) Off-State Voltage On-State Voltage ON/OFF Control (Either Option) Pull-Up Voltage Pull-Up Resistance Output Over-Voltage Protection Over-Temperature Shutdown Over-Temperature Shutdown Restart Hysteresis Load Current Scale Factor Calculated MTBF (Telcordia) Calculated MTBF (MIL-217) Field Demonstrated MTBF 140 9 124 11.6 10 1667 2.36 1.79 Figures A & B Over full temp range; no load Average PCB Temperature See App Note: Output Load Current Calc. 150 RELIABILITY CHARACTERISTICS 10 Hrs. TR-NWT-000332; 80% load,300LFM, 40oC Ta 106 Hrs. MIL-HDBK-217F; 80% load, 300LFM, 40oC Ta 106 Hrs. See our website for values STANDARDS COMPLIANCE Parameter P STANDARDS COMPLIANCE Notes File # E194341, Basic insulation & pollution degree 2 Certified by TUV Test on entire assembly; board & plastic components UL94V-0 compliant ESD test, 8kV - NP, 15kV air - NP (Normal Performance) Section 7 - electrical safety, Section 9 - bonding/grounding UL/cUL 60950-1 EN60950-1 72/23/EEC 93/68/EEC Needle Flame Test (IEC 695-2-2) IEC 61000-4-2 GR-1089-CORE • 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. QUALIFICATION TESTING Parameter P QUALIFICATION TESTING # Units 32 5 5 10 5 5 5 3 Test Conditions 10-55Hz sweep, 0.060” total excursion,1 min./sweep, 120 sweeps for 3 axis Life Test Vibration Mechanical Shock Temperature Cycling Power/Thermal Cycling Design Marginality Humidity Solderability 95% rated Vin and load, units at derating point, 1000 hours 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, 2 minutes on and 6 hours off MIL-STD-883, method 2003 • Extensive characterization testing of all SynQor products and manufacturing processes is performed to ensure that we supply robust, reliable product. Contact the factory for official product family qualification documents. OPTIONS SynQor provides various options for Logic Sense, Pin Length and Feature Set for this family of DC/DC converters. Please consult the last page for information on available options. PATENTS SynQor is protected under various patents, including but not limited to U.S. Patent numbers 5,999,417; 6,222,742 B1; 6,594,159 B2; 6,545,890 B2. Product # BQ55090ETA27 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BE559C Rev. B 10/10/06 Page 4 Technical Specification 100 95 90 85 80 75 70 0 3 6 9 12 15 18 21 24 27 35 Vin 48 Vin 55 Vin 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 3 6 Input: Output: Current: Package: 35-55 V 9.6 V 27 A Eighth-brick Power Dissipation (W) Efficiency (%) 35 Vin 48 Vin 55 Vin 9 12 15 18 21 24 27 Load Current (A) Load Current (A) Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. Figure 2: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 98 12 11 Output Voltage (V) 10 9 8 7 6 5 4 400 97 Efficiency (%) 96 95 94 35V 48V 55V 0 5 10 15 20 25 93 25 C 40 C 55 C 0 100 200 300 92 Air Flow (LFM) Load Current (A) Figure 3: 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). Figure 4: Output voltage regulation vs. load current for minimum, nominal, and maximum input voltage at 25°C. 25 20 IOUT (A) 15 400 LFM 300 LFM 200 LFM 100 LFM 10 5 0 25 40 55 70 85 Ambient Air Temperature (oC) Semiconductor junction temperature is within 1°C of surface temperature Figure 5: Maximum output power derating curves 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 # BQ55090ETA27 Phone 1-888-567-9596 Figure 6: Thermal plot of converter at 27 amp load current (250W) 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.# 005-2BE559C Rev. B 10/10/06 Page 5 www.synqor.com Technical Specification Input: Output: Current: Package: 35-55 V 9.6 V 27 A Eighth-brick 25 20 IOUT (A) 15 400 LFM 300 LFM 200 LFM 100 LFM 10 5 0 25 40 55 70 o 85 Semiconductor junction temperature is within 1°C of surface temperature Ambient Air Temperature ( C) Figure 7: Maximum output power derating curves vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM with air flowing from output to input (nominal input voltage). Figure 8: Thermal plot of converter at 27 amp load current (250W) 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) (1.0 ms/div). Input voltage pre-applied. Top Trace: Vout (2V/div). Bottom Trace: ON/OFF input (1V/div). Figure 10: Turn-on transient at zero load (1.0 ms/div). Top Trace: Vout (2V/div). Bottom Trace: ON/OFF input (1V/div). See Fig. 14 source impedance 10 µH See Fig. 13 See Fig. 15 iS VSOURCE iC DC/DC Converter 1 µF VOUT 15 µF, 47 µF,