The high temperature 30A SQE48 Series of DC-DC converters provides a high efficiency single output, in a 1/8th brick package that is only 62% the size of the industry-standard quarter-brick. Specifically designed for operation in systems that have limited airflow and increased ambient temperatures, the SQE48T30 converters utilize the same pinout and functionality of the industry- standard quarter-bricks. The 30 A SQE48 Series converters provide thermal performance in high temperature environments that exceeds most competitors 30A quarter-bricks. This performance is accomplished through the use of patented/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 impedance to system airflow, thus enhancing cooling for both upstream and downstream devices. The use of 100% automation for assembly, coupled with advanced electronic circuits and RoHS lead-free solder and lead-solder-exempted products are thermal design, results in a product with extremely high reliability. available Operating from a 36-75 V input, the SQE48T30 converters provide Delivers up to 30 A any standard output voltage from 3.3 V down to 1.2 V that can be Industry-standard quarter-brick pinout trimmed from 20% to +10% of the nominal output voltage ( 10% Outputs available: 3.3, 2.5, 1.8, 1.5, and 1.2 VDC for output voltage 1.2 V), thus providing outstanding design On-board input differential LC-filter flexibility. Startup into pre-biased load With standard pinout and trim equations, the SQE48 Series No minimum load required converters are perfect drop-in replacements for existing 30 A Weight: 0.72 oz 20.6 g quarter-brick designs. Inclusion of this converter in a new design Meets Basic Insulation requirements of EN60950 can result in significant board space and cost savings. The Withstands 100 V input transient for 100 ms designer can expect reliability improvement over other available converters because of the SQE48 Series optimized thermal Fixed-frequency operation efficiency. Fully protected Remote output sense Positive or negative logic ON/OFF option Telecommunications Latching and non-latching protection available Data Communications Output voltage trim range: +10%/20% with industry-standard Wireless Communications trim equations (except 1.2 Vout) Servers, workstations High reliability: MTBF = 15.75 million hours, calculated per Telcordia TR-332, Method I Case 1 UL60950 recognized in US and Canada and certified per High efficiency no heat sink required IEC/EN60950 Higher current capability at elevated temperatures than Designed to meet Class B conducted emissions per FCC and competitors 30 A quarter-bricks EN55022 when used with external filter Industry standard 1/8th brick footprint: 0.896 x 2.30 (2.06 2 All materials meet UL94, V-0 flammability rating in ), 38% smaller than conventional quarter-bricks 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.00638 AA Conditions: T = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Cin=33 F, unless otherwise specified. A PARAMETER Notes 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 200 pF Isolation Resistance 10 M Feature Characteristics Switching Frequency 440 kHz Industry-std. equations (3.3 1.5 V) -20 +10 % 1 Output Voltage Trim Range Use trim equation on Page 6 (1.2 V) -10 +10 % 1 Remote Sense Compensation Percent of VOUT(NOM) +10 % Latching or Non-latching ( 3.3 1.8 V) 117 122 130 % Output Overvoltage Protection Latching or Non-latching (1.5 -1.2 V) 122 128 140 % C Overtemperature Shutdown (PCB) Non-latching 125 Peak Back-drive Output Current (Sinking current Peak amplitude 1 ADC from external source) during startup into pre- Peak duration 50 s biased output B ack-drive Output Current (Sinking Current from Converter Off 10 30 mADC external source) external voltage 5 VDC Auto-Restart Period Applies to all protection features 200 ms Turn-On Time See Figs. E, F, and G 3 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 Input Characteristics Operating Input Voltage Range 36 48 75 VDC Input Undervoltage 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 30 ADC Out 36 VDC In VOUT = 3.3 VDC 3.1 ADC VOUT = 2.5 VDC 2.4 ADC VOUT = 1.8 VDC 1.7 ADC VOUT = 1.5 VDC 1.5 ADC VOUT = 1.2 VDC 1.2 ADC Input Stand-by Current Vin = 48V, converter disabled 2 mA 866.513.2839 tech.support psbel.com belpowersolutions.com 2015 Bel Power Solutions, inc. BCD.00638 AA