SQE48T20033-NGB0G

The new High Temperature 20 A SemiQ Family of dc-dc converters provides a high efficiency single output in a size that is only 60% of industry-standard quarter-bricks. Specifically designed for operation in systems that have limited airflow and increased ambient temperatures, the SQE48T20033 eighth-brick converters utilize the same pinout and functionality of the industry-standard quarter-bricks. The 20 A SQE48T Series converters of the SemiQ Family provide thermal performance in high temperature environments that exceeds many competitors 25 A and 30 A quarter-bricks. This is accomplished through the use of patent pending circuits, packaging, and processing techniques to achieve ultra-high efficiency, excellent thermal management and a low body profile. Low body profile and the preclusion of heat sinks minimize airflow shadowing, thus enhancing cooling for downstream devices. The use of 100% automation for assembly, coupled with advanced electronic circuits and thermal design, results in a product with extremely high reliability. Operating from a 36-75V input, the 20A SQE48T Series converters provides a standard output voltage 3.3V. The outputs can be trimmed from 20% to +10% of the nominal output voltage, thus providing outstanding design flexibility. With standard pinout and trim equations, the SQE48T Series converters are perfect drop-in replacements for competing quarter-brick designs. Inclusion of this converter in new designs can result in significant board space and cost savings. The designer can expect reliability improvement over other available converters because of the SQE48T Series optimized thermal efficiency. Delivers 20 A with no derating up to 70 C Industry-standard quarter-brick pinout On-board input differential LC-filter Start-up into pre-biased load No minimum load required Weight: 0.72 oz 20.6 g Meets Basic Insulation requirements of EN6095 Withstands 100 V input transient for 100 ms Fixed-frequency operation Fully protected Remote output sense Positive or negative logic ON/OFF option Output voltage trim range: +10%/20% with Industry Standard trim equations Designed to meet Class B conducted emissions per FCC and EN 55022 when used with external filter All materials meet UL94, V-0 flammability rating RoHS lead-free solder and lead-solder-exempted products are available Approved to the latest edition and amendment of ITE Safety standards UL/CSA 60950-1 2 SQE48T20033 Extremely small footprint: 0.896 x 2.30 (2.06 in2), 38% smaller than conventional quarter bricks. PARAMETER DESCRIPTION / CONDITION MIN NOM MAX UNIT Absolute Maximum Ratings Input Voltage Continuous 0 80 VDC Operating Ambient Temperature -40 85 C Storage Temperature -55 125 C Input Characteristics Operating Input Voltage Range 36 48 75 VDC Input Under Voltage Lockout Non-latching Turn-on Threshold 33 34 35 VDC Turn-off Threshold 31 32 33 VDC Input Voltage Transient 100 ms 100 VDC Isolation Characteristics I/O Isolation 2000 VDC Isolation Capacitance 160 pF Isolation Resistance 10 M Feature Characteristics Switching Frequency 480 kHz 1 Output Voltage Trim Range Industry-std. equations -20 +10 % 1 Remote Sense Compensation Percent of VOUT(NOM) +10 % Output Over-Voltage Protection Non-latching 117 122 127 % Over-Temperature Shutdown (PCB) Non-latching 125 C Auto-Restart Period Applies to all protection features 200 ms Turn-On Time 4 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 Input Characteristics Maximum Input Current 20 ADC, 3.3 VDC Out 36 VDC In 2 ADC Input Stand-by Current Vin = 48 V, converter disabled 2 mADC Input No Load Current Vin = 48 V, converter enabled mADC (0 load on the output) 38 Input Reflected-Ripple Current 20 MHz bandwidth 6 mAPK-PK Input Voltage Ripple Rejection 120 Hz 75 dB 1 Vout can be increased up to 10% via the sense leads or up to 10% via the trim function. However, the total output voltage trim from all sources should not exceed 10% of VOUT (NOM), in order to insure specified operation of overvoltage protection circuitry. tech.support psbel.com