2011•Journal of Beijing Information Science & Technology UniversityRequires access

Two-channel single-chip flyback switching power supply design

Qi Kun

Abstract

The basic principal of current flyback switching power supply is introduced.A two-channel output of +12 V and +5 V flyback switching mode power supply based on TOP223Y is designed,and the structure of circuit system is analyzed briefly.The improving and optimizing project is put forward then.By testing the signal waveform,it is demonstrated that the design of this method can reduce the switching power supply ripple,improve the power supply efficiency and ensure stable voltage output.

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Available abstract

Key concepts: Flyback transformer, Switched-mode power supply, Ripple, Power supply rejection ratio, Flyback diode, Waveform, Switched-mode power supply applications, Power (physics)