Single-switch inverted output quadratic wide gain converter

A reverse output, secondary technology, applied in output power conversion devices, DC power input conversion to DC power output, instruments, etc. Easy-to-control effects

Active Publication Date: 2014-03-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the existing converters that can provide a large step-down gain can meet the occasions that require a wide-gain step-down converter, they cannot be applie

Method used

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  • Single-switch inverted output quadratic wide gain converter
  • Single-switch inverted output quadratic wide gain converter
  • Single-switch inverted output quadratic wide gain converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] Such as figure 1 as shown,

[0031] A single-switch reverse output quadratic wide-gain converter includes a Boost circuit A, a Buck-Boost circuit B and a Buck circuit C connected in sequence.

[0032] The Boost circuit A includes an input power supply V g , the first inductance L 1 , the first diode D 1 , the second diode D 2 , switch tube S and first capacitor C 1 ;

[0033] The Buck-Boost circuit B includes a first capacitor C 1 , the second inductance L 2 , the second capacitance C 2 , the third diode C 3 and switch tube S;

[0034] The Buck circuit C includes a second capacitor C 2 , switch tube S, fourth diode D 4 , the fifth diode D 5 , the third inductance L 3 , the third capacitor C 3 and load R.

[0035] The first inductance L 1 One end of the input supply V g the positive connection of the

[0036] The first inductance L 1 The other end of the first diode D 1 The anode of the second diode D 2 the anode connection;

[0037] The first diod...

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PUM

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Abstract

The invention provides a single-switch inverted output quadratic wide gain converter which comprises a Boost circuit, a Buck-Boost circuit and a Buck circuit which are sequentially connected, wherein the Boost circuit is formed by an input power supply, a first inductor, a first diode, a second diode, a switching tube and a first capacitor; the Buck-Boost circuit is formed by the first capacitor, a second inductor, a second capacitor, a third diode and the switching tube; and the Buck circuit is formed by the second capacitor, the switching tube, a fourth diode, a fifth diode, a third inductor, a third capacitor and a load. According to the invention, only one switching tube is used; the Boost circuit and the Buck-Boost circuit share the first capacitor; and the Buck-Boost circuit and the Buck circuit share the second capacitor. The single-switch inverted output quadratic wide gain converter has a simple structure and is convenient to control; and an output voltage has a wide gain. According to the invention, the polarity of an input voltage is opposite to that of the output voltage.

Description

technical field [0001] The invention relates to the technical field of power electronic converters, in particular to a single-phase high-gain boost converter. Background technique [0002] The voltage required by current integrated circuits is usually lower than 5V, and the voltage required by future microprocessors will drop from the currently commonly used 3.5V to even lower, or even lower than 1V. Usually, the power supply voltage is 12V or higher, so a step-down converter with a wide gain is required to realize voltage conversion. [0003] In standard telecommunications equipment, it is usually necessary to increase the 48V DC voltage provided by the battery to the 380V bus voltage. Some high-pressure gas discharge lamps used in automotive headlights usually need to increase the voltage to 100V or higher when starting. In the field of new energy In the case of solar power or wind power generation, the voltage provided by a single module is usually low, which is much low...

Claims

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Application Information

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IPC IPC(8): H02M3/156
Inventor 张波张能丘东元肖文勋黄子田
Owner SOUTH CHINA UNIV OF TECH
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