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Parallel current sharing system of high frequency switching power supply [Copy link]

Parallel current sharing system of high frequency switching power supply

Abstract: This paper introduces the control circuit and parallel current sharing system of high-frequency switching power supply. The control circuit uses TL494 pulse width modulation controller to generate PWM pulses, and uses software to achieve current sharing when multiple power supplies are running in parallel.

Keywords: switching power supply; pulse width modulation; current sharing

Modularization is the development trend of switching power supplies. Parallel operation is an effective solution for large-capacity power supply products. Capacity expansion can be achieved by designing an N+l redundant power supply system. This system is a parallel connection of multiple high-frequency switching power supplies (1000A/15V) intelligent modules. The power supply unit and the monitoring unit are both based on the AT89C51 microcontroller. The current sharing of the power supply unit is coordinated by the monitoring unit. The monitoring unit can communicate with each power supply unit and the PC to achieve remote monitoring.

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This post is from Power technology
 
 

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