Digital overcurrent detector for peak current mode DC-DC converter

摘要

The purpose of this paper is to present the digital overcurrent detector for the peak current mode dc-dc converter which has been already applied to the server for the data center. The proposed peak current detection circuit is composed of the RC integrator and comparator as the A-D converter for the detected current. The proposed method can detect the overcurrent by using the RC integration time in real time. Furthermore, it is possible to maintain the arbitrary current in the overcurrent limitation mode. The proposed overcurrent limitation mode is implemented by the FPGA. The effectively of proposed method are confirmed by both of simulated and experimental results.