HBA48T12280 DC-DC Converter Data Sheet 36-75 VDC Input 28 VDC 12.5 A Output Features RoHS compliant for all six substances Delivers up to 12.5 A of output current Industry-standard half-brick pinout On-board input differential LC-filter Startup into pre-biased load No minimum load required Dimensions: 2.40 x 2.28 x 0.50 (61.0 mm x 57.9 mm x 12.7 mm) Meets Basic Insulation requirements Remote output voltage sense Positive or negative logic ON/OFF option Output voltage trim range: +18%/25% Protections include: undervoltage lockout, overcurrent, overvoltage, and overtemperature Applications nd Safety according to IEC/EN 60950-1 2 Edition and nd Cellular Infrastructure UL/CSA 60950-1 2 Edition Wireless communications Telecommunications Description The HBA48T12280 DC-DC Converter operates over an input voltage range of 36 to 75 VDC and provides a regulated output voltage of 28.0 VDC at up to 12.5 A of output current. The HBA48T12280 provides a regulated 28V bus voltage for todays RF power amplifiers. Its design emphasis is on obtaining the best cost/performance tradeoff. The converter s output is fully isolated from the input, which allows a positive or negative output configuration and the converter to meet Basic Insulation requirements. The open-frame converter module is constructed with a dual-board approach using discrete magnetics. The standard feature set includes remote on/off (positive or negative logic), output voltage sensing, positive logic output trim, input undervoltage lockout, output voltage shutdown, output overcurrent shutdown, and overtemperature shutdown with hysteresis BCD00009-1 Rev. AC, 04-Apr-11 Page 1 of 15 www.power-one.com HBA48T12280 DC-DC Converter Data Sheet 36-75 VDC Input 28 VDC 12.5 A Output Electrical Specifications Conditions: min. < T < max., min. < V < max, load = resistive, unless otherwise specified. OPERATING IN Parameter Notes Min Typ Max Units Absolute Maximum Ratings Input Voltage Continuous 0 80 VDC Transient (100 ms) 100 VDC Operation limited by Baseplate Operating Ambient Temperature temperature -40 85 C Operating Temperature Component (Tc) -40 125 C Baseplate (Tb) -40 100 C Storage Temperature -55 125 C Isolation Characteristics Input to Base plate Isolation 1500 VDC Input to Output Isolation 1500 VDC Output to Base plate Isolation 500 VDC Isolation Capacitance Input to output 1.6 2.0 F Isolation Resistance 10 M Feature Characteristics Switching Frequency 325 kHz 1 2 Output Voltage Trim Range Industry-std. equations -25 +18 % 1 Remote Sense Compensation Percent of V (NOM) 5 % OUT Output Overvoltage Protection Latching 120 140 % Overtemperature Shutdown Component (Tc) 125 C Baseplate (Tb) Non-latching 105 110 C Hysteresis 10 Turn-On Time from Vin Time from UVLO to Vo=90%Vo-nom 80 ms Turn-On Time from enable Time from Enable to Vo=90%Vo-nom 80 ms ON/OFF Control (Positive Logic option) Off threshold level -0.3 0.8 VDC Converter Off (logic low) Source Current On/Off to -Vin 1 mADC Converter On (logic high) On threshold level 2.4 35.0 VDC 1 Vout can be increased up to 5% via the sense leads or up to 18% via the trim function. However, the total output voltage trim-up should not exceed 18% of V (NOM). OUT 2 Trim equations are defined within this documents Operations section. BCD00009-1 Rev. AC, 04-Apr-11 Page 2 of 15 www.power-one.com