US 2014/0368254 A1 · GATE DRIVER, SWITCH CONTROL CIRCUIT AND POWER SUPPLY DEVICE COMPRISING THE GATE DRIVER CIRCUIT

Abstract

The present invention relates to a gate driving circuit, a switch control circuit including the gate driving circuit, and a power supply. The gate driving circuit generates a gate voltage of the power switch. The gate driving circuit includes: a delay control circuit generating a first control signal that controls a rising slope of the gate voltage at a first time after a first delay period is passed from a rising time of the gate voltage and generating a second control signal that controls the rising slope of the gate voltage at a time after a second delay period is passed from the first time; and a temperature compensation circuit that varies the first delay period according to a temperature.

Claims24

Dependent claims

A gate driving circuit for generating a gate voltage of a power switch, comprising

a delay control circuit configured to generate a first control signal to control a rising slope of the gate voltage at a first time after a first delay period is passed from a rising time of the gate voltage and generate a second control signal to control the rising slope of the gate voltage at a second time after a second delay period is passed from the first time;
and
a temperature compensation circuit configured to vary the first delay period according to a temperature.

Dependencies are inferred from the claim text.

Gate driver, switch control circuit and power supply device comprising the gate driver circuit

Life of this patent

Gate driver, switch control circuit and power supply device comprising the gate driver circuit

Life of this patent

Abstract

Claims24