SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input Standard Outputs from 1-12 VDC The SemiQ Family of dc-dc converters from 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- 30 A quarter-bricks. This is accomplished through the use SQ24T and SQ24S Converters 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 electric and thermal design, results Features in a product with extremely high reliability. RoHS lead-free solder and lead-solder-exempted products are available Operating from an 18-36 V input, the SQ24 Series Delivers up to 15 A (50 W) converters of the SemiQ Family provide any standard Available in through-hole and SM packages output voltage from 12 V down to 1.0 V. Outputs can be trimmed from 20% to +10% of the nominal output voltage Low weight: 0.53 oz (15 g) (10% for output voltages 1.2 V and 1.0 V), thus providing Low profile: 0.274 (6.96 mm) 2 outstanding design flexibility. Extremely small footprint: 0.896 x 2.30 (2.06 in ) Outputs available in 12.0, 8.0, 6.0, 5.0, 3.3, 2.5, 2.0, With a standard pinout and trim equations, the SQ24 1.8, 1.5, 1.2 and 1.0 V Series converters are perfect drop-in replacements for High efficiency no heat sink required existing quarter brick designs. Inclusion of this converter in On-board input differential LC-filter new designs can result in significant board space and cost Extremely low output and input ripple savings. The device is also available in a surface mount Start-up into pre-biased output package. No minimum load required Meets Basic Insulation requirements of EN60950 In both cases the designer can expect reliability Fixed-frequency operation improvement over other available converters because of Fully protected the SQ24 Series optimized thermal efficiency. Remote output sense Output voltage trim range: +10%/ 20% (except 1.2 V and 1.0 V outputs with trim range 10%) with industry- Applications standard trim equations High reliability: MTBF of 3.4 million hours, calculated Telecommunications per Telcordia TR-332, Method I Case 1 Data communications Positive or negative logic ON/OFF option Wireless UL 60950-1/CSA 22.2 No. 60950-1-07 Second Edition, IEC 60950-1: 2005, and EN 60950-1:2006 Servers Meets conducted emissions requirements of FCC Class B and EN 55022 Class B with external filter All materials meet UL94, V-0 flammability rating MCD10159 Rev. 1.2, 20-Apr-12 Page 1 of 70 www.power-one.com SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input Standard Outputs from 1-12 VDC Electrical Specifications (common to all versions) Conditions: T =25 C, Airflow=300 LFM (1.5 m/s), Vin=24 VDC, All output voltages, unless otherwise specified. A PARAMETER NOTES MIN TYP MAX UNITS ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 0 40 VDC Operating Ambient Temperature -40 85 C Storage Temperature -55 125 C INPUT CHARACTERISTICS Operating Input Voltage Range 18 24 36 VDC Input Under Voltage Lockout Non-latching Turn-on Threshold 16 17 17.5 VDC Turn-off Threshold 15 16 16.5 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 V, 12 V 230 pF Isolation Resistance 10 M FEATURE CHARACTERISTICS Switching Frequency 415 kHz 1 Output Voltage Trim Range Industry-std. equations (1.5 - 12 V) -20 +10 % Industry-std. equations (1.0 - 1.2 V) -10 +10 % 1 Remote Sense Compensation Percent of V (NOM) +10 % OUT Output Over-Voltage Protection Non-latching (1.5 - 12 V) 117 125 140 % Non-latching (1.0 - 1.2 V) 124 132 140 % Auto-Restart Period Applies to all protection features 100 ms Turn-On Time 4 ms ON/OFF Control (Positive Logic) Converter Off -20 0.8 VDC Converter On 2.4 20 VDC ON/OFF Control (Negative Logic) Converter Off 2.4 20 VDC Converter On -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 total output voltage trim from all sources should not exceed 10% of V (NOM), in order to insure specified operation of over-voltage protection circuitry. See Output Voltage Adjust/Trim for OUT detailed information. MCD10159 Rev. 1.2, 20-Apr-12 Page 2 of 70 www.power-one.com