The design of interleave active clamp forward synchronous rectification DC/DC converter.

摘要

With the arrival of the age of high speed and power hungry microprocessors, the point of load converter has become a necessity. The power delivery architecture has changed from a centralize distribution box delivering an entire system's power to a distributed architecture, in which a common 28V DC bus voltage is distributed throughout the aircraft and further converted down at the point of load. To meet the demands of more power in smaller size, power supply engineer must increase the converter's switching frequency. Unfortunately, as the converter switching frequency increase the efficiency is compromised. In particular, the switching gate drive and body diode related losses proportionally increase with the switching frequency.; This thesis introduces a design of a Switch-Mode Power Supply with Interleave Active Clamp Forward Synchronous Rectification (Interleave ACFSR) DC/DC converter operating in peak current mode is presented. The self-driven method to drive the secondary side synchronous rectification and active clamp reset technique are implemented to achieve improved efficiency and the overall footprint of the converter.