A voltage conversion circuit

A voltage conversion circuit and voltage conversion technology are applied in the direction of high-efficiency power electronic conversion, output power conversion devices, electrical components, etc., which can solve the problems of increasing dopants and increasing manufacturing costs, so as to increase manufacturing costs and reduce burnout. risk, the effect of reducing the differential pressure

Active Publication Date: 2017-06-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased manufacturing cost due to the need for increased dopants

Method used

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  • A voltage conversion circuit
  • A voltage conversion circuit
  • A voltage conversion circuit

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Embodiment Construction

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0059] See figure 2 , figure 2 is a circuit diagram of the voltage conversion circuit of the first embodiment of the present invention. Such as figure 2 As shown, the voltage conversion circuit 20 disclosed in this embodiment includes: a power supply 21, a first power transistor 22, a second power transistor 23, a first energy storage element 24, a second energy storage element 25, and a discharge module 26, wherein The voltage conversion...

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Abstract

The invention discloses a voltage converting circuit. It includes: a first power transistor; a second power transistor, the second power transistor is turned off when the first power transistor is turned on, and turned on when the first power transistor is turned off; a first energy storage element; a second energy storage element, used Coupled with the first power transistor and the second power transistor, the bleeder module is used for coupling with the first power transistor, and when the first power transistor is turned off and the voltage of the source of the first power transistor reaches the source threshold The current flowing from the source of the first power transistor to ground provides a current path. Through the above method, the present invention can reduce the voltage difference between the drain and the source of the first power transistor, reduce the risk of burnout of the first power transistor, and avoid increasing the manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of power management, in particular to a voltage conversion circuit. Background technique [0002] With the rapid development of consumer electronic products, a power management integrated circuit (Power Management Intergraded Circuit, PMIC), as an important part of electronic products, has the advantages of high integration, high conversion efficiency, and low cost. In recent years, only mobile phones, tablet computers and other electronic products have been rapidly updated, and the requirements for power management integrated circuits are also getting higher and higher. [0003] Such as figure 1 As shown, the existing power management integrated circuit includes a gate controller 11, a PMOS power transistor 12 and an NMOS power transistor 13, and the gate of the PMOS power transistor 12 and the gate of the NMOS power transistor 13 are connected to the gate controller 11 , the source of the PMOS power tran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/32H02M3/155
CPCH02M1/32H02M3/155H02M3/1588H02M3/158Y02B70/10H03K17/6872
Inventor 汪家轲陈亮
Owner HUAWEI TECH CO LTD
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