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Voltage-reduction-type converter control device

A converter control and control unit technology, which is applied in the direction of output power conversion device, control/regulation system, DC power input conversion to DC power output, etc.

Inactive Publication Date: 2012-08-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a solution to the existing integrated buck converter circuit problems

Method used

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with drawings and embodiments.

[0031] The corresponding principle is to separate the control unit and the power device unit in the existing step-down integrated converter, and the control unit is the step-down converter control unit described in the present invention. Since the separation of the power devices gives the system designer more design space, switching devices with lower on-resistance and higher breakdown voltage can be selected, thereby further reducing switching losses and improving the conversion efficiency of the converter. the input voltage of the entire converter. Due to the introduction of input and output voltage detection, an appropriate voltage can be selected as the power supply voltage of its control unit. The bootstrap circuit is used as the drive unit of the switch tube, and the power switch unit can conveniently use an N-channel enhanced MOS tube with lower on-resistance. ...

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Abstract

The invention provides a voltage-reduction-type converter control device. The corresponding principle is as follows: a control unit and a power device unit in the existing voltage-reduction-type integrated converter are separated, wherein the control unit is the voltage-reduction-type converter control unit provided by the invention. The power device is separated, thus more design space is provided for a designer; a switching device with lower on resistance and higher breakdown voltage can be selected, thus the switching loss is further reduced and the conversion efficiency of the converter is improved; meanwhile, the input voltage of the whole converter is improved. Input / output voltage detection is introduced, thus an appropriate voltage can be selected as a power supply voltage of the control unit of the voltage-reduction-type converter control device. A bootstrapping circuit is adopted as a driver unit of a switching tube, and a power switching unit can conveniently adopt an N-channel grid type MOS (metal oxide semiconductor) transistor with lower on resistance. The working frequency can be set by virtue of a PWM (pulse width modulation) wave control unit in the unit, thus devices in a peripheral cell can be designed more conveniently.

Description

technical field [0001] The invention belongs to the technical field of power electronics application, and specifically provides a step-down converter control device. Background technique [0002] Since the birth of the switching integrated voltage regulator, it has been widely used in various fields such as aviation, aerospace, medical electronics, and consumer electronics. However, with the continuous expansion of the application level, more stringent requirements are put forward for it. For example, larger output current, wider input voltage range, higher conversion efficiency, and higher power density. [0003] In the face of the above-mentioned challenges, One Unit has introduced a switching integrated voltage regulator with a wider range of input voltages. There are also designers who use separate devices to design, such as a controller plus a driver plus corresponding power devices to solve this problem. However, the general structure of the existing controller is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/36H02M3/156
Inventor 王贤江石玉钟慧高强张光辉高光辉
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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