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Digital PWM controller for high-frequency low-power DC-DC switching mode power supply

Abstract : This paper presents a fully synthesizable digital controller for high-frequency low-power DC-DC switching mode power supply (SMPS). Key module of the digital controller is a Hybrid digital pulse-width modulator (DPWM), which takes advantage of Digital Clock Manager (DCM) phase-shift characteristics available in FPGA resource and combines a counter-comparator with multi-bit Delta-Sigma (Delta-Sigma) Multi-stAge-noise-SHaping (MASH) modulator. A digital controller which includes the proposed Hybrid Delta-Sigma DPWM and a digital PID algorithm is experimentally verified using an FPGA on a high-frequency low-power discrete synchronous buck converter. Experimental results with constant switching frequency up to 4 MHz validate the functionality of the proposed digital controller. In addition, the digital controller is implemented in a 0.35 mum standard CMOS.
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https://hal.archives-ouvertes.fr/hal-00410238
Contributor : Publications Ampère <>
Submitted on : Tuesday, August 18, 2009 - 6:33:37 PM
Last modification on : Tuesday, April 7, 2020 - 1:57:32 AM

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Shuibao Guo, Yanxia Gao, Yanping Xu, Xuefang Lin-Shi, Bruno Allard. Digital PWM controller for high-frequency low-power DC-DC switching mode power supply. IPEMC, May 2009, Wuhan, China. pp.1340 - 1346, ⟨10.1109/IPEMC.2009.5157592⟩. ⟨hal-00410238⟩

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