SQ48 DC-DC Series Data Sheet 36-75 VDC Input 1.0-12 VDC Output Features RoHS lead-free solder and lead-solder-exempted products are available Delivers up to 15 A (50 W) Industry-standard quarter-brick pinout Outputs available in 12.0, 8.0, 6.0, 5.0, 3.3, 2.5, 2.0, 1.8, 1.5, 1.2, and 1.0 V Available in through-hole and SMT packages Low profile: 0.258 (6.55 mm) Low weight: 0.53 oz (15 g) On-board input differential LC-filter Startup into pre-biased output No minimum load required Applications Meets Basic Insulation requirements of EN60950 Telecommunications Withstands 100 V input transient for 100 ms Data communications Fixed-frequency operation Wireless communications Fully protected Servers Remote output sense Positive or negative logic ON/OFF option Benefits Output voltage trim range: +10%/ 20% with High efficiency no heat sink required industry-standard trim equations (except 1.2 V and 1.0 V outputs with trim range 10%) For output voltages ranging from 3.3 to 1.0 V, 40% higher current capability at elevated temperatures High reliability: MTBF = 3.4 million hours, calculated than most competitors 20-25A quarter-bricks per Telcordia TR-332, Method I Case 1 2 Extremely small footprint: 0.896 x 2.30 (2.06 in ), UL60950 recognized in US and Canada and 40% smaller than conventional quarter-bricks DEMKO certified per IEC/EN60950 Designed to meet Class B conducted emissions per FCC and EN55022 when used with external filter All materials meet UL94, V-0 flammability rating Description The SemiQ Series of dc-dc converters provides a high-efficiency single output in a size that is only 60% of industry-standard quarter-bricks, while preserving the same pinout and functionality. In high temperature environments, for output voltages ranging from 3.3 V to 1.0 V, the thermal performance of SemiQ converters exceeds that of most competitors 20-25 A quarter-bricks. This performance is accomplished through the use of patent-pending circuit, packaging, and processing techniques to achieve ultra-high efficiency, excellent thermal management, and a very 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 36-75 V input, the SQ48 Series converters provide any standard output voltage from 12 V down to 1.0 V. Outputs can be trimmed from 20% to +10% of the nominal output voltage (10% for output voltages 1.2 V and 1.0 V), thus providing outstanding design flexibility. With a standard pinout and trim equations, the SQ48 Series converters are perfect drop-in replacements for existing quarter-brick designs. Inclusion of this converter in new designs can result in significant board space and cost savings. In both cases the designer can expect reliability improvement over other available converters because of the SQ48 Series optimized thermal efficiency. SEP 14, 2005 revised to NOV 06, 2006 Page 1 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input 1.0-12 VDC Output Electrical Specifications (common for all versions) Conditions: T = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, All output voltages, 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 Input Characteristics Operating Input Voltage Range 36 48 75 VDC Input Undervoltage 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 1.0 - 3.3 V 160 pF 5.0 - 6.0 V 260 pF 8.0 - 12 V 230 pF Isolation Resistance 10 M Feature Characteristics Switching Frequency 415 kHz Industry-std. equations (1.5 - 12V) -20 +10 % 1 Output Voltage Trim Range Use trim equation on Page 4 (1.0 -1.2 V) -10 +10 % 1 Remote Sense Compensation Percent of V (NOM) +10 % OUT Output Overvoltage Protection Non-latching (1.5 - 12 V) 117 122 127 % Non-latching (1.0 - 1.2 V) 124 132 140 % Auto-Restart Period Applies to all protection features 100 ms Turn-On Time See Figs. F, G and H 4 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 up to 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 SEP 14, 2005 revised to NOV 06, 2006 Page 2 of 64 www.power-one.com