Design method of output driving power supply of multiple isolation circuits

Abstract

The invention discloses a design method of an output driving power supply of multiple isolation circuits, and relates to the technical field of power supply design. Specific to multiple isolation circuits, a unified output driving power supply is provided, wherein the output driving power supply comprises an oscillating circuit and a flyback type power supply primary side power circuit; the flyback type power supply primary side power circuit comprises an MOS transistor and a transformer; the oscillating circuit is connected with the primary side of the transformer through the MOS transistor,while the secondary side of the transformer and the multiple isolation circuits form multiple secondary side rectifying circuits and multiple secondary side filtering circuits; and multiple-path isolation output of the isolation circuits can be realized, the PCB occupied space is relatively small, the isolation voltage is high, circuit design on the PCB is optimized, and the cost is lowered.

Description

technical field [0001] The invention discloses a design method of a power supply, relates to the technical field of power supply design, and in particular relates to a design method of a multi-channel isolation circuit output drive power supply. Background technique [0002] The purpose of circuit isolation is usually to isolate the source of interference from the part that is prone to interference from the circuit, so as to achieve the purpose of isolating field interference. [0003] In a high-voltage system, the multi-channel isolated output voltage needs to be controlled centrally, and each isolated circuit needs a power supply circuit. When there are many isolated circuits, the existing solution is to use many independent isolated power supply circuits for isolation. A larger PCB area is not conducive to the optimal design of the PCB, nor is it conducive to saving costs. The invention provides a design method for the output driving power supply of a multi-channel isola...

AI Technical Summary

Problems solved by technology

[0003] In a high-voltage system, the multi-channel isolated output voltage needs to be controlled centrally, and each isolated circuit needs a power supply circuit. When there are many isolated circuits, the existing solution is to use many independent isolated power supply circuits for isolation. Larger PCB area is not conducive to the optimal design of PCB and is not conducive to cost saving

Images