Challenges DRISHTI
Indigenization of DC-DC Converter Module with EMI Filter
DC- DC Converter: Triple output DC/DC converters provide a wide input voltage range of 16 to 48 VDC delivering 15 watts of total output power with output voltages of +5 and ±15 VDC. The main output, +5 VDC, will supply up to 7.5 watts and the auxiliaries will supply up to 7.5 watts of combined power. Operating temperature range is -55°C to +125°C. It should provide transient protection up to 80V for up to 120ms. It should be fully isolated and should provide indefinite short circuit protection. It should have efficiency greater than 85%. Dimension of DC-DC converter should be 38x30x9 mm (LxWxH) (Approx.) and weight should be less than 35gms. The converter should be fully compliant to “883” MIL-PRF-38534 Class H screening. It will be used in Airborne system. EMI Filter: EMI filter and transient suppression module combines EMI filtering and transient protection. The EMI filter reduces the reflected ripple current from DC-DC switching converters. As a protection module, it suppresses input transients on the power bus to protect the converter and other downstream components. The filter’s input voltage range is 16V to 40V and 40W Power. Operating temperature range is -55°C to +125°C. Dimension of EMI Filter should be 75x30x11 mm (LxWxH) (Approx.) and weight should be less than 50gms. The filters should meet all the requirements of MIL-STD-461E/F and MIL-STD-704D. It will be used in Airborne system.
