The new SSQE48T20033 DC-DC converter is an open frame sixteenth-brick DC-DC converter that conforms to the Distributed Open Standards Architecture (DOSA) specifications. The converter operates over an input voltage range of 36 to 75 VDC, and provides a tightly regulated output voltage with an output current up to 20 A. The output is fully isolated from the input and the converter meets Basic Insulation requirements permitting a positive or negative output configuration. The converter is constructed using a single-board approach with both planar and discrete magnetics. The standard RoHS lead-free solder and lead-solder-exempted feature set includes remote On/Off (positive or negative products are available logic), input undervoltage lockout, output overvoltage, Industry-standard DOSA pinout overcurrent, and short circuit protections, output voltage Output: 3.3 V at 20 A trim, and overtemperature shutdown with hysteresis. On-board input differential LC-filter With standard pinout and trim equations and excellent Start-up into pre-biased load No minimum load required thermal performance, the SSQE48T20033 converters can Weight: 0.44 oz. 12.3 g replace in most cases existing eighth-brick converters. Meets Basic Insulation requirements of EN60950 Inclusion of this converter in a new design can result in Withstands 100 V input transient for 100 mS significant board space and cost savings. Fixed-frequency operation Hiccup overcurrent protection Fully protected (OTP, OCP, OVP, UVLO) Remote sense Telecommunications Remote ON/OFF positive or negative logic option Data communications Output voltage trim range: +10%/20% with industry- Wireless communications standard trim equations Servers, Workstations Low height of 0.374 (9.5 mm) Industry standard 1/16th brick footprint: 0.9 by 1.3 High reliability: MTBF = 16.23 million hours, calculated per Telcordia TR-332, Method I Case 1 High efficiency no heat sink required UL60950 recognized in US and Canada and DEMKO certified per IEC/EN60950 Cost effective, single board design Designed to meet Class B conducted emissions per Small size and low-profile. FCC and EN55022 when used with external filter All materials meet UL94, V-0 flammability rating North America +1-866.513.2839 Asia-Pacific +86.755.29885888 Europe, Middle East +353 61 225 977 tech.support psbel.com belpowersolutions.com 2015 Bel Power Solutions, inc. BCD.00647 AA Conditions: TA = 26 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Cin = 33 F, unless otherwise specified. PARAMETER DESCRIPTION / CONDITION MIN TYP MAX UNITS Absolute Maximum Ratings Input Voltage Continuous 0 80 VDC Operating Ambient Temperature -40 85 C Storage Temperature -55 125 C Isolation Characteristics I/O Isolation 2250 VDC Isolation Capacitance 150 pF Isolation Resistance 10 M Feature Characteristics Switching Frequency 440 kHz 1 Output Voltage Trim Range Industry-standard equations (3.3V) -20 +10 % 1 Remote Sense Compensation Percent of VOUT(NOM) +10 % Output Over-voltage Protection Non-latching 120 130 140 % Over-temperature Shutdown (PCB) Non-latching 125 C Sinking current from external voltage source Peak Backdrive Output Current during startup into equal VOUT(NOM) 0.6V and connected to 50 mADC prebiased output output via 1 resistor Converter is OFF Backdrive Output Current in OFF state 10 mADC External voltage=5 VDC Auto-Restart Period Applies to all protection features 200 mS Turn-On Time See Figures E, F, and G 1.5 5 10 mS ON/OFF Control (Positive Logic) Converter Off (logic low) -20 0.8 VDC Converter On (logic high) 2.4 20 VDC ON/OFF Control (Negative Logic) Converter Off (logic high) 2.4 20 VDC Converter On (logic low) -20 0.8 VDC Mechanical Weight 12.3 g Reliability Telcordia SR-332, Method I Case 1 MTBF 16.23 MHrs 50% electrical stress, 40C ambient Input Characteristics Operating Input Voltage Range 36 48 75 VDC Input Under-voltage Lockout Turn-on Threshold 33 34 35 VDC Turn-off Threshold 31 32 33 VDC Input Voltage Transient 100 mS 100 VDC Maximum Input Current VIN = 36VDC , IOUT=20ADC 2.1 ADC Input Stand-by Current Vin = 48V, converter disabled 10 mA Input No Load Current (0 load on the output) Vin = 48V, converter enabled 43 mA 866.513.2839 tech.support psbel.com belpowersolutions.com 2015 Bel Power Solutions, inc. BCD.00647 AA