MER1 1W DC/DC Converters Murata Power Solutions MER1 1W DC/DC Converters are an updated high-performance version of the NMR series. The MER1 series is more efficient and offers improved regulation performance for applications that do not tolerate a wide output voltage variation. Murata Power Solutions MER1 1W DC/DC Converters are ideally suited for providing local supplies on control system boards with the added benefit of 1kVDC galvanic isolation to reduce switching noise.