A half-bridge module inductive gate drive power supply based on four-layer pcb

Abstract

The invention belongs to the field of wireless power transmission and provides a half-bridge module inductive gate drive power supply based on a four-layer PCB. The drive power supply has a four-layerPCB structure and comprises a transmitter and two receivers, wherein the transmitter is composed of a transmitting circuit and a transmitting coil; the receiver is composed of a receiving circuit anda receiving coil; the two receivers provide two ways of isolated power supply voltage for providing power for drive circuits of upper and lower bridge arm switches on an IGBT half-bridge module; thetransmitting circuit and the receiving circuit are placed in the top PCB layer; and the receiving coil, the transmitting coil and the second receiving coil are sequentially located in the first middlePCB layer, the second middle PCB layer and the bottom PCB layer. An inductive non-contact power transmission technology is adopted, completely no electrical contact exists between the transmitting coil and the receiving coil, and depending on the PCB insulation layer for isolation is realized; and each composition is highly integrated on the four-layer PCB, and miniaturization and light weight are realized easily.

Description

technical field [0001] The invention belongs to the field of wireless energy transmission, and relates to the design of a power supply for a gate drive circuit of a power semiconductor device, in particular to a half-bridge module inductive gate drive power supply based on a four-layer PCB. Background technique [0002] IGBT half-bridge module drive circuits usually require an isolated power supply, which must meet design specifications such as isolation voltage, volume, and weight. [0003] At present, the isolated drive power supply mainly uses power frequency transformers, high frequency transformers, non-contact power transmission and other methods for isolation. Although the power frequency transformer has strong insulation ability and is easy to increase the isolation voltage, it is bulky and heavy. High-frequency transformers are the mainstream isolation method for commercial drive power supplies today, but compared with common commercial drive chips, such as Avago's...

AI Technical Summary

Problems solved by technology

However, this design method using discrete multiple PCB boards requires an installation space that is often larger than the volume of the high-frequency transformer.

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