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Switching voltage doubling rectifier circuit with low-voltage input/high-voltage output in discontinued current mode

A voltage-doubling rectifier circuit, high-voltage output technology, applied in the direction of irreversible AC power input into DC power output, DC power input into DC power output, output power conversion devices, etc., can solve the problem of high output voltage, transformer turns There are many problems such as large number of power supply circuits and large size of power supply circuits, so as to achieve the effect of reducing production costs and reducing the number of turns.

Active Publication Date: 2012-02-15
NO 24 RES INST OF CETC
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to invent a switching voltage doubler rectifier circuit with discontinuous conduction mode low-voltage input / high-voltage output, so as to overcome the problems of large transformer turns and large power circuit volume under low-voltage input / high-voltage output conditions, and at the same time To achieve the purpose of high output voltage

Method used

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  • Switching voltage doubling rectifier circuit with low-voltage input/high-voltage output in discontinued current mode
  • Switching voltage doubling rectifier circuit with low-voltage input/high-voltage output in discontinued current mode
  • Switching voltage doubling rectifier circuit with low-voltage input/high-voltage output in discontinued current mode

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Embodiment Construction

[0026] The specific implementation manners of the present invention are not limited to the following description, and are now further described in conjunction with the accompanying drawings.

[0027] The principle diagram of the switching voltage doubler rectifier circuit of the discontinuous conduction mode low-voltage input / high-voltage output implemented in the present invention is as follows: image 3 shown. It consists of an isolated PWM conversion circuit and a voltage doubler rectifier circuit, when the power switch Q 1 conduction, the transformer T 1 The primary excitation current increases linearly to store energy, while T 1 secondary winding and capacitor C 2 、C 4 together, separately through D 2 、D4 , for capacitance C 1 、C 3 charging; when Q 1 off, T 1 The primary winding is open and its stored energy from T 1 secondary outflow, T 1 secondary winding through D 1 、D 3 , for capacitance C 2 、C 4 is charged, when T 1 After the stored energy is released...

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Abstract

The invention discloses a switching voltage doubling rectifier circuit with low-voltage input / high-voltage output in a discontinued current mode. The circuit comprises a pulse width modulation (PWM) electrical energy conversion circuit and a voltage doubling rectifier filter circuit. A transformer of the circuit works in the discontinued current mode (DCM), and the turn ratio of a coupling transformer is greatly decreased under the same voltage conversion transformation scale condition, so the problems of great number of turns of a boosting transformer, large power circuit volume and low high-voltage output capability under low-voltage input / high-voltage output condition. The circuit provided by the invention is widely applied to power supplies of high-voltage electronic equipment in the fields of aerospace, medicine and the like.

Description

technical field [0001] The present invention relates to a switch voltage doubler rectifier circuit, in particular to a switch voltage doubler rectifier circuit working in Discontinued Current Mode (Discontinued Current Mode, DCM) low-voltage input / high voltage output, which is directly applicable to aviation, medical electronics and other fields In the power supply of high voltage electronic equipment. Background technique [0002] Converting a lower input voltage to a higher voltage output has a wide range of applications in industry. The traditional voltage doubler rectifier circuit can generate DC high voltage by means of voltage doubler rectifier with lower AC voltage, figure 1 It is a schematic diagram of a traditional voltage doubler (four times) rectifier circuit. It uses power frequency sinusoidal alternating current as a transformer T 1a input, T 1a The secondary is connected to a voltage doubler rectifier circuit. When T 1a Junior namesake end A a is timing,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02M7/08
Inventor 章治国余海生尹华程铭代天君
Owner NO 24 RES INST OF CETC
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