MHz switching frequency-based devices enable miniaturization of the DC-DC converter and EMI filters
Achieving EMI conducted emission compliance for automobiles with a single stage filter. By Nicola Rosano, Sr. Strategic FA/System Engineer at Vicor
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A full brick package developed by TDK-Lambda, the PF1500B-360, is for high voltage distributed power architectures
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The REM60-W is available with two input ranges : 9.0 to 36V DC, and 18 to 75V DC and with a selection of tightly regulated single and dual outputs (5V, 5.1V, 12V, 15V, 24V /-12V, and /-15V). The DC/DC converter has a case size of 57.9 x 36.8 x 12.7mm. According to Recom, this delivers industry-leading power density for a 60W part. Efficiency peaks at over 90%. Operating temperature range is 105°C ambient with derating. The REM60-4824SW model, for example operates at 83°C at full 60W output power with 2m/s airflow.
The REM60-W series has reinforced / 2MOPP isolation and is rated 5kV AC per minute for 250V AC working voltage. Creepage and clearance distance from input to output is more than 8mm. The devices also have patient leakage current of 4.5µA maximum to suit medical B, BF, and CF applications.
Design features include an industry standard pinout, on/off control, remote sense, and output voltage trimming with full protection against over-temperature, output overloads, short circuits and input under-voltage. Operation to zero load is possible. Light load efficiency is high and quiescent and standby current is low, adds the company.
The REM60-W series operates at up to 5000m altitude and for a pollution degree 2 (PD2) environment. It is reliable, at over 1Mhrs MTBF according to MIL-HDBK-217F, 25°C, ground benign conditions.
It is certified to IEC/EN 60601-1 3rd edition, ANSI/AAMI ES60601-1 and CAN/CSA-C22.2 No. 60601-1:14 for the North American markets and complies with EN 60601-1-2 for EMI immunity for medical equipment. It is also certified to IEC/UL/EN 62368-1 certifications for IT/multimedia markets. EMC standards EN 55032 Class A and B can be met with a simple external filter.
The DC/DC converters are covered by a three-year warranty. Samples are available from all authorised distributors, or directly from Recom.
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