Isolated power supply control ICs are for industrial equipment

For auxiliary supply in high power industrial equipment such as solar inverters and power storage systems, Rohm has introduced the BD7F200 isolated, flyback DC/DC converter control IC. It covers all applications with a power requirement from 1.0 to 10W, and includes two packaging options.

The IC is an addition to the company’s BD7F series. It has an optocoupler-less architecture, which allows designers to simplify the development of the transformer and to reduce costs, says the company. It nearly halves the number of external parts by eliminating the need for a photo-coupler and a phase compensation network, providing energy savings, reliability, and miniaturisation.

A newly developed adaptive ‘on’ time control method improves load response time, which can be a drawback encountered with conventional isolated power supply ICs. Voltage fluctuation during the load transient is limited to under 200mV, contributing to reliability, says the company.

The company also offers a BD7F100 evaluation kit. The BD7F100HFN-EVK-001, implementing the BD7F100HFN, features six I/O configurations. The board is for 24V input, 5V output designs, with output current range of 13.8 to 800mA for maximum output power of 4W.


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