Grid voltage generating circuit

Abstract

A grid voltage generating circuit is used to provide a grid voltage to a transistor switch, and comprises a first voltage generating circuit and a second voltage generating circuit. The first voltage generating circuit is used to provide a first voltage to a grid of the transistor switch, and the second voltage generating circuit is used to provide a second voltage to the grid of the transistor switch, wherein the second voltage is at least greater than a voltage needed to conduct the transistor switch, and the first voltage is greater than the second voltage.

Description

technical field [0001] The invention relates to a voltage generation circuit, in particular to a gate voltage generation circuit of a transistor switch. Background technique [0002] Traditionally, in order to switch the transistor switch, a gate voltage supply circuit is usually coupled to the gate of the transistor switch to supply a high level voltage to turn on the transistor switch. The gate voltage supply circuit is generally realized by a charge pump circuit, so as to provide a voltage higher than the voltage required to turn on the transistor switch, so as to continuously reduce the transistor switch after the transistor switch is turned on. resistor between drain and source, reducing power loss. [0003] However, using a charge pump circuit requires a specific charging time to reach the voltage required to turn on the transistor switch. For electrical devices that require fast startup, this charging time becomes the bottleneck of whether the electrical device can b...

AI Technical Summary

Problems solved by technology

[0003] However, the use of a charge pump circuit requires a specific charging time to reach the voltage required to turn on the transistor switch. For electrical devices that require fast startup, this charging time becomes the bottleneck of whether the electrical device can achieve instant use.

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