SQE48T30 DC-DC Series Data Sheet 36-75 VDC Input 1.2-3.3 VDC 30 A Output Features RoHS lead-free solder and lead-solder-exempted products are available Delivers up to 30 A Industry-standard quarter-brick pinout Outputs available: 3.3, 2.5, 1.8, 1.5, and 1.2 VDC 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 EN60950 Withstands 100 V input transient for 100 ms Fixed-frequency operation Applications Fully protected Telecommunications Remote output sense Data communications Positive or negative logic ON/OFF option Wireless communications Latching and non-latching protection available Servers, workstations Output voltage trim range: +10%/20% with industry-standard trim equations (except 1.2 Vout) High reliability: MTBF = 15.75 million hours, calculated per Telcordia TR-332, Method I Case 1 Benefits UL60950 recognized in US and Canada and certified High efficiency no heat sink required per IEC/EN60950 Higher current capability at elevated temperatures Designed to meet Class B conducted emissions per than competitors 30 A quarter-bricks FCC and EN55022 when used with external filter th Industry standard 1/8 brick footprint: 0.896 x All materials meet UL94, V-0 flammability rating 2 2.30 (2.06 in ), 38% smaller than conventional quarter-bricks Description th The high temperature 30A SQE48 Series of DC-DC converters provides a high efficiency single output, in a 1/8 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 thermal design, results in a product with extremely high reliability. Operating from a 36-75 V input, the SQE48T30 converters provide any standard output voltage from 3.3 V down to 1.2 V that can be trimmed from 20% to +10% of the nominal output voltage (10% for output voltage 1.2 V), thus providing outstanding design flexibility. With standard pinout and trim equations, the SQE48 Series converters are perfect drop-in replacements for existing 30 A quarter-brick designs. Inclusion of this converter in a new design can result in significant board space and cost savings. The designer can expect reliability improvement over other available converters because of the SQE48 Series optimized thermal efficiency. ZD-01961 Rev. 2.1, 17-Mar-11 www.power-one.com Page 1 of 29 SQE48T30 DC-DC Series Data Sheet 36-75 VDC Input 1.2-3.3 VDC 30 A Output Electrical Specifications 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 1 Output Voltage Trim Range Industry-std. equations (3.3 - 1.5 V) -20 +10 % Use trim equation on Page 6 (1.2 V) -10 +10 % 1 Remote Sense Compensation Percent of V (NOM) +10 % OUT Output Overvoltage Protection Latching or Non-latching (3.3 - 1.8 V) 117 122 130 % Latching or Non-latching (1.5 - 1.2 V) 122 128 140 % Overtemperature Shutdown (PCB) Non-latching 125 C Peak Back-drive Output Current Peak amplitude 1 ADC (Sinking current from external source) during startup into pre-biased output Peak duration 50 s Back-drive Output Current (Sinking Current Converter Off from external source) external voltage 5 VDC 10 30 mADC 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 Additional Notes: 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 should not exceed 10% of V (NOM), in order to ensure specified operation of overvoltage protection circuitry. OUT ZD-01961 Rev. 2.1, 17-Mar-11 www.power-one.com Page 2 of 29