The new SSQE48T10033 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 10 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 feature set includes remote On/Off (positive or negative logic), input undervoltage lockout, output overvoltage, overcurrent, and short circuit protections, output voltage trim, and overtemperature shutdown with hysteresis. With standard pinout and trim equations and excellent thermal performance, the SSQE48T10033 converters can replace in most cases existing eighth-brick converters. Inclusion of this converter in a new design can result in significant board space and cost savings. 36-75 VDC Input 3.3 VDC 10 A Output Industry-standard DOSA pinout On-board input differential LC-filter Start-up into pre-biased load No minimum load required Withstands 100 V input transient for 100 ms Fixed-frequency operation Hiccup overcurrent protection Fully protected (OTP, OCP, OVP, UVLO) Remote sense Remote ON/OFF positive or negative logic option Output voltage trim range: +10% / 20% with industry-standard trim equations Designed to meet Class B conducted emissions per FCC and EN55022 when used with external filter All materials meet UL94, V-0 flammability rating Approved to the latest edition and amendment of ITE Safety standards, UL/CSA 60950-1 and IEC60950-1 RoHS lead free solder and lead-solder-exempted products are available Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 225 977 +1 866 513 2839 2016 Bel Power Solutions, Inc. BCD.00775 AA 2 Conditions: T = 25C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Cin = 33 F, unless otherwise specified. A 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 (3.3 V) -20 +10 % 1 Remote Sense Compensation Percent of VOUT(NOM) +10 % Output Over-voltage Protection Non-latching 120 127 140 % Over-temperature Shutdown (PCB) Non-latching 125 C Peak Back-drive Output Current Peak amplitude 1 ADC (Sinking current from external source) Peak duration 50 s during startup into pre-biased output Back-drive Output Current (Sinking Current Converter Off 10 mADC from external source) external voltage = 5 VDC Auto-Restart Period Applies to all protection features 200 ms Turn-On Time See Figures E, F, and G 3 ms Converter Off (logic low) -20 0.8 VDC ON/OFF Control (Positive Logic) Converter On (logic high) 2.4 20 VDC Converter Off (logic high) 2.4 20 VDC ON/OFF Control (Negative Logic) Converter On (logic low) -20 0.8 VDC Mechanical Dimensions 0.9 x 1.3 x 0.374 in Weight 12.3 g Reliability Telcordia SR-332, Method I Case 1 MTBF 16.23 MHrs 50% electrical stress, 40C ambient 1 Vout can be increased up to 10% via the sense leads or 10% via the trim function. However, the total output voltage trim from all sources shall not exceed 10% of VOUT(nom) in order to ensure specified operation of overvoltage protection circuitry. tech.support psbel.com