335 / 2021-11-10 01:11:38

High-Step-Down Synchronous Rectified DC-DC Converter with High Accurate Output Regulation In Wide Operation Range

High-step-down,wide operation range,synchronous rectification,isolated DC-DC converter

Power electronics technology and application > Power converter topologies and design

High-step-down digital controlled isolated DC-DC converter with a wide input/output operation range is popular in industrial applications. This digest presents a high-step-down isolated DC-DC converter with accurate output regulation ability in a wide operation range. The active clamp circuit and full-bridge ZVS synchronous rectification are implemented for the efficiency concerns. Planar magnetic technique is employed to reduce the volume and maintain the parameter consistency. Meanwhile, combining the high resolutions of DSP I/O configurations, a simple effective control approach for the accurate output voltage regulation is found. A 180-420V wide input voltage range and 28V/10A output isolated DC-DC converter prototype is built and tested.