A pulse-width-modulation-based approach to eliminate inrush currents of switch-mode power supply

A PWM method was suggested to eliminate inrush currents in SMPS circuits by digitally controlling the voltage rise rate of the input capacitor. Once the capacitor voltage is fully charged, a bypass switch maintains high conversion efficiency. This PWM-SMPS, tested considering PVT variations, reduces...

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Bibliographic Details
Published in:Journal of physics. Conference series 2024-09, Vol.2849 (1), p.12072
Main Authors: Xue, Bingxin, Zhang, Jian, Zhang, Pin, Liu, Yawen, He, Zhejia, Liao, Congwei, Qiu, Leilei, Huang, Shengxiang, Deng, Lianwen
Format: Article
Language:English
Subjects:
Capacitors
Electric potential
Energy conversion efficiency
Passive components
Pulse duration modulation
Switched mode power supplies
Voltage
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Summary:A PWM method was suggested to eliminate inrush currents in SMPS circuits by digitally controlling the voltage rise rate of the input capacitor. Once the capacitor voltage is fully charged, a bypass switch maintains high conversion efficiency. This PWM-SMPS, tested considering PVT variations, reduces inrush currents by 6× compared to conventional methods with passive components, thus enhancing environmental suitability for SMPS applications.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2849/1/012072