Quarter Brick 80 Amps xppower.com KHQ080 Series • 80 A Output with High Power Density • High Efficiency - Up to 91% • Low Voltage Outputs to 1.2 V • Industry Standard Double-P Pinout • Low Profile - 0.45” (11.4mm) • High MTBF • International Safety Approvals Specification Input General Input Voltage Range • 36-75 VDC Efficiency • 91% for 3.3V out (see table) Input Current • 6.0 A at 36 Vin 3.2 A at 75 Vin max Isolation Voltage • 1500 VDC Input to Output Input Reflected Ripple • 35 mA pk-pk typical Isolation Resistance • 10 MΩ min Input Reverse Voltage • 12 A external fuse recommended Switching Frequency • 190 kHz ±20 kHz 3 Protection Power Density • 122 W/in Input Transient • 100 VDC for 100 ms MTBF • 1,000 kHrs min per Bellcore Undervoltage Lockout • On = 32 to 35 V Protection Off = 29 to 34 V Environmental Input Filter • Differential CLC filter Operating Temperature • -40 ˚C to +85 ˚C ambient Cooling • 300 LFM min recommended. Output See derating curve Output Voltage • 1.2 to 5.0 VDC Operating Humidity • 30-95% RH non-condensing Output Voltage Trim • ±10 % Storage Temperature • -55 ˚C to +125 ˚C Minimum Load • No minimum load required Storage Humidity • 5-95% RH non-condensing Line Regulation • ±0.1% typical Operating Altitude • 3000 m (9843 ft) derates total Load Regulation • ±0.2% typical max output current by 20% Setpoint Accuracy • ±2% max Shock • 10 G per IEC68-2-29 Turn-on Time • 10 ms Vibration • 5-9 Hz, 5 mm/s per IEC68-2-6 Over/Undershoot • None EMC & Safety Transient Response • 100 mV max deviation, recovery to within 1% in 50 μs for a 25% load change Emissions • EN55022 level A conducted. Meets Ripple & Noise • 100 mV pk-pk max Bellcore TSYNWT 1089 with external filter Safety Approvals • EN60950, UL60950, CSA950 per cUL, Overvoltage Protection • 120-135% recycle input to reset CE Mark (LVD) Overtemperature • Shutdown at 125 ˚C with auto recovery Protection Overcurrent Protection • 110-140% with auto recovery Short Circuit Protection • 155 A max. hiccup / trip and restart mode Temperature • 50 mV max from -40 ˚C to +85 ˚C Coefficient Remote Sense • Compensates up to ±10% drop Remote On/Off • On = Logic low or short Off = Logic high or open. Positive logic available (see note 2) Maximum Capacitive • 20,000 μF Load DC-DC DC-DC KHQ080 Models and Ratings Output Output Output Current Model (4) Input Current Efficiency (2) Power Voltage Maximum Number 96.0 W 1.2 V 80 A 2.33 A 86.0% KHQ08048S1V2 120.0 W 1.5 V 80 A 2.84 A 88.0% KHQ08048S1V5 144.0 W 1.8 V 80 A 3.37 A 89.0% KHQ08048S1V8 162.5 W 2.5 V 60 A 3.74 A 90.5% KHQ08048S2V5 181.0 W 3.3 V 55 A 4.14 A 91.0% KHQ08048S3V3 175.0 W 5.0 V 35 A 5.15 A 91.0% KHQ08048S5V0 Notes 1. Standard product is open frame with negative logic. Baseplate versions are built to order. 2. Please add one of the following suffix code to the part number when ordering: AL = Open Frame/Negative Logic, AH = Open Frame/Positive Logic, BL = Baseplate/Negative Logic, BH = Baseplate/Positive Logic. 3. For details of external filtering, contact technical sales. 4. Input current for 48 V nominal input. Mechanical Details All dimensions are in inches (mm) Weight: 0.10 lb (44 g) for open frame WITHOUT BASEPLATE 2.28 (57.9) 0.45 (11.4) 0.21 (5.3) 1.86 (47.3) MAX 2 X ø0.158 (ø4.01) M3 x (0.5) MOUNTING INSERTS PC BOARD 0.18 (4.6) 0.60 (15.2) T3 T2 PIN CONNECTIONS 10 1 6 2 Pin Function 9 1.03 (26.2) 3 1.45 (36.8) 4 0.30 (7.6) T1 1 -Output 8 L1 L2 5 7 2 -Sense L3 0.21 (5.3) 3 Trim BOTTOM VIEW 0.15 (3.8) 2 X 0.425 (10.8) 4 +Sense 0.30 (7.6) 1.88 (47.8) 0.45 (11.4) WITH BASEPLATE 5 +Output 0.14 (3.6) 2.00 (50.8) 0.60 (15.3) 6 -Output 0.50 (12.7) MAX 7 +Output 0.18 (4.6) 8 +Input 6 X 0.040 (1.02) 9 On/Off DIA CU/TIN PLATED PINS 10 -Input 4 X 0.062 (1.57) DIA CU/TIN PLATED PINS (Pins 1, 5, 6 & 7) Tolerance: x.xx = ±0.20 in. (0.5 mm) x.xxx = ±0.10 in. (0.254 mm) Application Notes Thermal Derating for KHQ080 1.8 V Efficiency Curve for KHQ080 1.8 V Thermal Derating for KHQ080 1.8 V Efficiency Curve for KHQ080 1.8 V Derating Curve for 1.8 V (No baseplate) Efficiency vs Output Current for 1.8 V 90% 90% 90 90 80 80 85% 85% 70 70 80% Vin = 36 60 80% Vin = 36 60 Vin = 48 50 Vin = 48 50 75% 75% Vin = 75 40 Vin = 75 40 30 70% 30 70% 20 20 65% 10 65% 10 0 0 25 35 45 55 65 75 85 60% 60% 25 35 45 55 65 75 85 8 16 24 32 40 48 56 64 72 80 8 16 24 32 40 48 56 64 72 80 AMBIENT TEMPERATURE (˚C) OUTPUT CURRENT (A) AMBIENT TEMPERATURE (˚C) OUTPUT CURRENT (A) 0 LFM 100 LFM 200 LFM 300 LFM 400 LFM 0 LFM 100 LFM 200 LFM 300 LFM 400 LFM 12-Sept-05 LOAD (A) LOAD (A) EFFICIENCY (%) EFFICIENCY (%)