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High-power high-efficiency charge pump circuit

A charge pump and circuit technology, applied in the direction of conversion equipment without intermediate conversion to AC, can solve problems such as difficult control and different potentials

Inactive Publication Date: 2012-04-04
王星光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The circuit adopts an isolated DC output 5V~20V circuit and a photoelectric or magnetically isolated gate driver chip to solve the difficult control problem caused by the different potential caused by the different positions of the electronic switch

Method used

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  • High-power high-efficiency charge pump circuit

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Embodiment Construction

[0014] Such as figure 1 As shown, PIN+ and PIN- are connected to the DC power supply B1, and the capacitor C1 is charged; the circuit DC1 generates 4 isolated DC outputs (V1+, V1-...V4+, V4-) for OP1, OP2, OP3, OP4; when the PWM1 circuit CP1 outputs high level. After the signal is isolated by OP1 and OP2, it controls N11, N12, N21, and N22 to turn on, and the capacitor C1 charges C2; when CP2 outputs high level, the signal is isolated by OP3 and OP4 to control N31, N32, N41 and N42 are turned on, and capacitor C2 is charged to C3; figure 2 As shown, because CP1 and CP2 are complementary pulse width signals with dead time, the electronic switch composed of N11, N12, N21, and N22 and the electronic switch composed of N31, N32, N41, and N42 will not be turned on at the same time; finally POUT+, POUT- will output the same and isolated DC voltage as PIN+ and PIN-.

[0015] Circuit DC1 is a conventional low-power isolated DC output circuit, each outputting a voltage of 5-20V. Circuit...

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Abstract

The invention relates to a charge pump circuit, which can convert supplied current voltage into negative voltage, positive-negative double voltage and multiple voltage. A pulse width modulation (PWM1) is adopted to supply control signals, and a multi-channel isolation direct-current output circuit (DC1) supplies power to photoelectric isolation gate pole drive chips or magnetic isolation gate pole drive chips (OP1, OP2, OP3 and OP4). The photoelectric isolation gate pole drive chips or the magnetic isolation gate pole drive chips drive an electronic switch composed of metal-oxide-semiconductor field effect transistors (MOSFETs) or insulated gate bipolar transistors (IGBTs) (N11, N12, N21, N22, N31, N32, N41 and N42) so as to transfer charge of capacitors (C1, C2 and C3). The charge pump circuit achieves different functions through series connection, parallel connection or different connection methods with an input end.

Description

Technical field [0001] The invention relates to a charge pump circuit, which converts the provided DC voltage into a negative voltage, a positive and negative double voltage, and a multiple voltage. It can carry out high-power conversion of hundreds of watts and kilowatts, and the unit conversion efficiency can reach 95% to 99%. And it can be applied to the battery pack for high-power dynamic energy balance for the battery pack. Background technique [0002] Traditional high-power DC-DC (DC-DC) conversion circuits use power inductors or transformers as energy conversion units, which have problems such as low conversion efficiency and serious electromagnetic interference. However, traditional charge pumps are limited by electronic switches and driving methods, and cannot achieve high power. They are mainly used in low power and low current circuits. Summary of the invention [0003] This unit circuit consists of a 4-channel (and above) isolated DC output 5V~20V circuit, a dual-ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/07
Inventor 王星光
Owner 王星光