Browsing by Author "Hsu, Shin-Hau"

Now showing 1 - 1 of 1

SoPC Based Digital Current-Mode Control of Full-Bridge Phase-Shifted DC/DC Converters with Fast Dynamic Responses
(2013)
Ho, Gun-Sen
;
Lin, Chiao-Chin
;
Hsu, Shin-Hau
;
Tzou, Ying-Yu
;
電機學院
This paper proposes a SOPC (system-on-a-programmable-chip) solution for the digital current-mode control of a full-bridge phase-shifted (FB-PS) DC-DC converter to achieve fast dynamic response. The digital current-mode control scheme consists of several parts: a digital phase-shifted PWM generator to generate programmable phase-shifted PWM signals, a digital current controller, and a digital voltage controller through which an adaptive gain adjustments scheme could adjust controller parameters to achieve a fast dynamic response of the output voltage, and with a synchronous current sampling scheme to avoid switching noise and spike. The implementation of the proposed digital current-mode controller was realized by using a mixed-signal FPGA A2F200 from Microsemi SmartFusion. Experimental results are given to verify and show the feasibility of the proposed control scheme to a 800W, 400V to 12V DC-DC dc-dc converter in applications to high-performance server power supplies.