Research on Multi-Mode Controller of Switching Power Supply

Shu Lin Liu; Li Li Qi

doi:10.4028/www.scientific.net/AMM.568-570.1217

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 568-570Research on Multi-Mode Controller of Switching...

Research on Multi-Mode Controller of Switching Power Supply

Abstract:

In order to improve the efficiency of the switching power supply in whole load range, the controller with PWM, PFM and BURST operating modes is designed in this paper, which changes the operation mode automatically according to the load. The operating principle and the advantages and disadvantages of the three operating modes are analyzed and compared. PWM mode is used in heavy load; PFM mode is used in light load to reduce switching losses by reducing the switching frequency and BURST mode is used at the standby time to further reduce switching losses. The main control module is designed and simulation results verify the feasibility of the designed circuit.

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Periodical:

Applied Mechanics and Materials (Volumes 568-570)

Pages:

1217-1220

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.568-570.1217

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Online since:

June 2014

Authors:

Shu Lin Liu, Li Li Qi*

Keywords:

Burst Mode, Multi-Mode Control, Switching Power Supply

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* - Corresponding Author

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