Bridge inverter circuit and its drive circuit

Abstract

A bridge inverter circuit and its driving circuit are disclosed. The driving circuit includes a signal input module and a delay control module. The delay control module includes a first delay branch and a second delay branch. The outputs of the first delay branch and the second delay branch are respectively connected to the high-side switch and the low-side switch of the bridge arm of the bridge inverter circuit. When the input signal of the driving circuit changes, the signal needs to pass through the delay time of the first delay branch and the second delay branch to reach the output terminal. The delay time serves as the transition envelope time of the high-side switch and the low-side switch, effectively preventing the high-side switch and the low-side switch from conducting simultaneously, avoiding shoot-through of the bridge arm, and thus protecting the circuit.

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