RW50S/28-AF Martek Power Single-Output Power Converter

The Eaton / Martek Power RW Series Single/Dual-Output Power Converters were designed as military grade, stand alone devices requiring no external components for operation. The entire series are 160 to 200 kHz, fixed frequency, switching power supplies. The series utilizes either push-pull forward or single ended forward converter topologies. Control is accomplished via pulse width modulation in a current mode control scheme.

The models are all encased in five-sided steel enclosures to minimize radiated noise. All models in this series contain internal EMI filters for compliance to MIL-STD-461 for conducted emissions on the input leads.

An input fuse is always recommended to protect both the source and the power supply in the event of failures. Bus fuse type MDX or equivalent slow-blow is recommended with a current rating approximately 200% of the full load input current to the converter. Having a slow-blow type fuse will allow for the converter's inrush charge at turn-on. The sense pins of the converter must be connected to their corresponding output bus. Inherently, power converters will have some internal energy loss, which is dissipated in the form of heat through an aluminum mounting surface. This surface must be cooled to maintain a temperature below the maximum operating temperature.