Unlock instant, AI-driven research and patent intelligence for your innovation.

Gate drive circuit and power converter

A gate drive circuit and gate technology, applied in the direction of output power conversion device, AC power input conversion to AC power output, circuit, etc., can solve the problems of increasing power consumption and hindering the acceleration of switching speed

Inactive Publication Date: 2013-03-06
YASKAWA DENKI KK
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the signal drive circuit disclosed in the above-mentioned Japanese Patent Laid-Open No. 2006-340088, the same voltage is applied to the gate of the PMOS transistor and the gate of the NMOS transistor, and thus there are simultaneous period of conduction
Therefore, a short-circuit current flows from the power supply potential to the ground potential through the PMOS transistor and the NMOS transistor, so as to increase power consumption and hinder switching speed acceleration

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gate drive circuit and power converter
  • Gate drive circuit and power converter
  • Gate drive circuit and power converter

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0023] First, refer to figure 1 The structure of the motor control device 100 as an example of the power conversion device according to the first embodiment of the present invention will be described. The power converter includes a gate drive circuit according to the present invention, such as a high-frequency power supply device or a motor drive device or the like.

[0024] Such as figure 1 As shown, the motor control device 100 according to the first embodiment includes a converter unit 1, an inverter unit 2, a gate drive circuit unit 3, a control power supply 4, a control unit 5, and an input / output port (I / O) 6 . The converter section 1 is an example of a power rectifier that converts an AC voltage into a DC voltage, and the inverter section 2 is an example of a "power conversion section" in the present invention.

[0025] A three-phase AC power supply is input to the inverter unit 1 from an R terminal, an S terminal, and a T terminal. The converter section 1 includes ...

no. 2 approach

[0060] First, refer to Figure 5 The gate drive circuit 11a of the motor control device 100a according to the second embodiment will be described. In the second embodiment, the capacitor 16 is provided between the input side to which the drive signal is input and the PchFET 12 , and the capacitor 17 is provided between the input side to which the drive signal is input and the NchFET 13 . The capacitor 16 and the capacitor 17 are examples of "first capacitor" and "second capacitor" in the present invention, respectively.

[0061] Such as Figure 5 As shown, in the gate drive circuit 11a of the motor control device 100a according to the second embodiment, the capacitor 16 is provided in parallel with the Zener diode 14 between the input side (resistor R1) to which the drive signal is input and the PchFET 12. . The capacitor 16 has a function of increasing the rising speed of the voltage applied to the gate (G) of the PchFET 12 when the PchFET 12 is switched from the on state ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention refers to a gate drive circuit and a power converter. This gate drive circuit includes a P-type field effect transistor, an N-type field effect transistor, and a diode, and the diode is so formed as to shift a voltage applied to at least either a gate of the P-type field effect transistor or a gate of the N-type field effect transistor to a side of a threshold voltage of the gate.

Description

technical field [0001] The invention relates to a gate drive circuit and a power conversion device using the gate drive circuit. Background technique [0002] Generally, a gate drive circuit including a P-type field effect transistor and an N-type field effect transistor is known. [0003] Japanese Patent Laid-Open No. 2006-340088 discloses a signal drive circuit (gate drive circuit) including a PMOS transistor (P-type field effect transistor) and an NMOS transistor (N-type field effect transistor), the NMOS transistor The drain of the PMOS transistor is connected to the drain. In this signal drive circuit, the gate of the PMOS transistor and the gate of the NMOS transistor are connected to each other, and the same voltage is applied. The source of the PMOS transistor is connected to the power supply potential, and the source of the NMOS transistor is connected to the ground potential. [0004] However, in the signal drive circuit disclosed in the above-mentioned Japanese...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/08H02M5/458
CPCH03K17/04123H03K17/08H03K17/16H03K17/687
Inventor 金田平次
Owner YASKAWA DENKI KK