New models of DC-DC converters feature 2xMOPP medical approvals

Powerbox has launched three new series of 15W, 20W and 30W board mount DC-DC converters for demanding medical application, featuring 105 models. The PMM15, PMM20 and PMM30 are certified to the third edition of the IEC/EN/ANSI/AAMI ES 60601-1 medical safety standard and rated for the greatest levels of patient protection - 2xMOPP. With a clearance and creepage distance of 8mm, a typical leakage current of 2µA and a 5,000VAC isolation voltage, the modules guarantee operator and patient safety and protection in medical applications. For optimised efficiency and flexibility, all models are available in wide input and ultra-wide input versions comprising 9V to 75V input voltage and offering seven different output voltages from 5V to +/-15V. These power converters come with a five-year warranty.

The series ranges, 9-18V, 18-36V, 36-75V, and the ultra-wide input versions in two input voltage, 9-36V and 18-75V. All models are fully regulated with a comprehensive range of output voltages covering 5V, 12V, 15V, 24V, +/-5V, +/-12V and +/-15V. No minimum load is needed and tight regulation from no load to full load of +/-0.2% on single output, and +/-0.5% on dual output is provided.

Created around an optimised topology, the series has an efficiency of up 90% and can be operated within an ambient temperature of -40C to +105C. In the case of natural convection a derating may apply. In cases of excess of heat, an internal over-temperature protection is set at +115C case. The devices incorporate several protections including under-voltage, over-voltage, over-load and short circuit, and thermal-shutdown.

The devices are supplied in a non-conductive black plastic housing and potted with a UL94-V0 silicon compound. The PMM15 and PMM20 are sized at 40.6mm x 25.4mm x 10.2 mm (1.6" x 1" x 0.4") and weigh 24g. The PMM30 is available in a 50.8mm x 25.4mm x 10.2mm (2" x 1" x 0.4") housing and weighs 32g. Without using external components, the series meet EMI levels as specified by EN55011, EN55032 and FCC Part 18, Class A. According to the MIL-HDBK-217F, at full load and +25C, the PMM15, PMM20 have an MTBF of two million hours, and the PMM30 of 1.1 million hours.