Suppression of Quantization-Induced Limit Cycles in Digitally Controlled DC-DC Converters by Dyadic Digital Pulse Width Modulation

被引：0
|
作者：
Usmonov, Maqsudjon [1 ]
Crovetti, Paolo S. [1 ]
Gregoretti, Francesco [1 ]
Musolino, Francesco [1 ]
机构：
[1] Politecn Torino, DET, Turin, Italy
来源：
2019 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2019年
关键词：
Limit Cycle Oscillations; Dyadic Digital Pulse Width Modulation (DDPWM); Dyadic Digital Pulse Modulation (DDPM); Dithering; High Resolution PWM; Digital Control of Power Converters; RESOLUTION;
D O I：
10.1109/ecce.2019.8913214
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Quantization-induced limit cycle oscillations (LCOs) in digitally controlled DC-DC converters are addressed in this paper. The novel Dyadic Digital PWM (DDPWM) is proposed to increase the effective pulse-width-modulator (PWM) resolution, as required for LCO-free operation, at low cost, without sacrificing DC accuracy and with no detrimental effects on the ripple voltage. Experimental results on a synchronous buck validate the approach highlighting effective LCOs suppression and DC accuracy enhancement at 5x reduced output voltage ripple compared to thermometric dithering for the same resolution increase.
引用
收藏
页码：2224 / 2231
页数：8
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