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12V DC-DC converter for embedded applications eliminates heatsinks

1st November 2017

Posted By Paul Boughton


Murata has added a 12V model to its OKI-78SR series of non-isolated switching regulator DC-DC power converters for embedded applications.

The fixed single output converter offers both tight regulation and high efficiency and is a direct plug-in replacement for TO-220 package linear regulators.

Rated at 12V and 1A, the OKI-78SR-12/1.0-W36-C converter’s efficiency is 95% when powered from a 24V source, eliminating the need for a heatsink that adds cost and increases complexity in the design and manufacturing processes.

Packaged in the form of a three-terminal linear regulator, the converter operates from a source voltage of 15 to 36V and is available in both vertical and horizontal mounting options.

The package measures 10.4 x 7.62 x 16.5mm (0.41 x 0.3 x 0.65 inches).

The OKI-78SR series is suitable in a wide range of applications, including computing, networking, telecommunications, industrial, aerospace and rail.

Indeed, it is ideal for any application where the ambient temperature ranges from -40 to 85°C, which has a source/system voltage in the range of 15 to 36Vdc, and where the output requirement is for 12V at 1A.

Standard features include a factory-set Vout at 12 Vdc, short-circuit/over-current protection, UL/EJ/IEC 60950-1, second edition safety approvals and RoHS compliance.

The OKI-78SR series incorporates advanced assembly techniques and the latest fixed switching frequency technology for power conversion available today with optional packaging configurations, safety features, high reliability, state-of-the-art figures for efficiency, thermal management, dynamic load response, industry standard package and OCP protection features.









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