CN104300786A - Buck-Boost type converter allowing output voltage and input voltage to be in same direction - Google Patents

Buck-Boost type converter allowing output voltage and input voltage to be in same direction Download PDF

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Publication number
CN104300786A
CN104300786A CN201410539262.5A CN201410539262A CN104300786A CN 104300786 A CN104300786 A CN 104300786A CN 201410539262 A CN201410539262 A CN 201410539262A CN 104300786 A CN104300786 A CN 104300786A
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CN
China
Prior art keywords
buck
diode
switching tube
input
input voltage
Prior art date
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Pending
Application number
CN201410539262.5A
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Chinese (zh)
Inventor
徐江涛
朱萌
高静
姚素英
史再峰
聂凯明
高志远
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Tianjin University
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Tianjin University
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Publication date
Application filed by Tianjin University filed Critical Tianjin University
Priority to CN201410539262.5A priority Critical patent/CN104300786A/en
Publication of CN104300786A publication Critical patent/CN104300786A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention relates to the field of power management, in particular to a Buck-Boost type converter aiming to change the topological structure of a traditional Buck-Boost type converter and allow output voltage and input voltage to be in the same direction. By the adoption of the technical scheme, according to the Buck-Boost type converter allowing the output voltage and the input voltage to be in the same direction, the positive end of input voltage is connected with one end of a switching tube Q1, and the other end of the switching tube Q1 is connected with the negative end of a diode D1; the positive end of the diode D1 is connected with the negative end of an input and connected to one end of an inductor at the same time, and the other end of the inductor is connected with the positive end of a switching tube Q2 and the positive end of the diode D2; the negative end of the diode D2 is connected with the positive end of an output, the other end of the switching tube is connected with the negative end of the input and the negative end of the output, and the switching tube Q1 and the switching tube Q2 are turned on/off synchronously. The Buck-Boost type converter is mainly applied to power management.

Description

Output voltage and input voltage Buck-Boost code converter in the same way
Technical field
The present invention relates to field of power management, specifically, relate to output voltage and input voltage Buck-Boost code converter in the same way.
Technical background
Along with the high speed development of industry, the nonlinear load of electric power system is increasing.The harmonic current injection that nonlinear load produces is to electrical network, and severe contamination power grid environment, produces a series of negative effect.The existence of utility network harmonic wave and First Harmonic Reactive Power, the power factor being finally all attributable to network load is less than 1.In order to harmonic carcellation and First Harmonic Reactive Power, power factor correction (PFC) should be carried out, make its power factor as far as possible close to 1, be namely equivalent to pure resistor load.
The most basic topology of circuit of power factor correction mainly contains three kinds, that is: boost (Boost) type, step-down (Buck) type, buck-boost (Buck-Boost) type.
For buck-boost (Buck-Boost) topology, because its input voltage and output voltage within the whole work period oppositely, make the voltage stress of switch greatly increase.The structure of traditional B uck-Boost code converter is as Fig. 1, one end of the anode connecting valve pipe Q1 of input voltage vin, the other end of Q1 connects one end of inductance and the negative terminal of diode, and the anode of diode connects the anode exported, the other end and the input negative terminal of inductance, export negative terminal and be connected.This topological structure causes output voltage and input voltage oppositely, and then makes the voltage stress of switching tube excessive, and exports arrange publicly very difficult with input, limits the practical application of this structure.
Summary of the invention
For overcoming the deficiencies in the prior art, changing the topological structure of traditional Buck-Boost code converter, making output voltage and input voltage in the same way.For this reason, the technical scheme that the present invention takes is, output voltage and input voltage Buck-Boost code converter in the same way, one end of the anode connecting valve pipe of input voltage, the other end of switching tube connects the negative terminal of diode D1, the anode of diode D1 connects the negative terminal of input, the anode of diode is connected to one end of inductance simultaneously, the other end connecting valve pipe Q2 of inductance and the anode of diode D2, the negative terminal of D2 connects the anode exported, the other end of switching tube connects the negative terminal of constrained input, the synchronous conducting of Q1 and Q2 and shutoff.
Compared with the prior art, technical characterstic of the present invention and effect:
Adopt the output voltage polarity of improved B uck-Boost converter of the present invention identical with the polarity of input voltage, so both improve switch tube voltage stress this problem large that output voltage oppositely causes, make output and input can use public reference level simultaneously, thus can simplify the circuit design of control section further.
Accompanying drawing explanation
Fig. 1: traditional B uck-Boost type topological structure schematic diagram;
Fig. 2: the Buck-Boost type topological structure schematic diagram of output voltage forward.
Embodiment
The circuit that the present invention describes is on the basis of traditional B uck-Boost code converter, a switching tube Q2 is added at output node, as Fig. 2, one end of the anode connecting valve pipe of input voltage, the other end of switching tube connects the negative terminal of diode D1, and the anode of diode connects the negative terminal of input.The anode of diode is connected to one end of inductance simultaneously, the other end connecting valve pipe Q2 of inductance and the anode of diode D2, and the negative terminal of D2 connects the anode exported, and the other end of switching tube connects the negative terminal of constrained input, the synchronous conducting of Q1 and Q2 and shutoff.Circuit is on this basis on the basis changing output voltage polarity, and the course of work of each cycle is identical with traditional B uck-Boost type topology.
Circuit working process of the present invention is as follows: when the conducting simultaneously of two switches, supply voltage Vin is to induction charging, and inductive current linearly increases; When two switches disconnect simultaneously, inductance is to load discharge, and inductive current linearly reduces.
The circuit that the present invention sets forth both can boost at maintenance traditional B uck-Boost code converter also can on the basis of Antihypertensive Feature, to its output voltage oppositely this shortcoming revise, make its constrained input voltage in the same way.So both improve switch tube voltage stress this problem large that output voltage oppositely causes, make output and input can use public reference level simultaneously, thus can simplify the circuit design of control section further.

Claims (1)

1. an output voltage and input voltage Buck-Boost code converter in the same way, it is characterized in that, one end of the anode connecting valve pipe of input voltage, the other end of switching tube connects the negative terminal of diode D1, the anode of diode D1 connects the negative terminal of input, the anode of diode is connected to one end of inductance simultaneously, the other end connecting valve pipe Q2 of inductance and the anode of diode D2, the negative terminal of D2 connects the anode exported, the other end of switching tube connects the negative terminal of constrained input, the synchronous conducting of Q1 and Q2 and shutoff.
CN201410539262.5A 2014-10-13 2014-10-13 Buck-Boost type converter allowing output voltage and input voltage to be in same direction Pending CN104300786A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410539262.5A CN104300786A (en) 2014-10-13 2014-10-13 Buck-Boost type converter allowing output voltage and input voltage to be in same direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410539262.5A CN104300786A (en) 2014-10-13 2014-10-13 Buck-Boost type converter allowing output voltage and input voltage to be in same direction

Publications (1)

Publication Number Publication Date
CN104300786A true CN104300786A (en) 2015-01-21

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CN201410539262.5A Pending CN104300786A (en) 2014-10-13 2014-10-13 Buck-Boost type converter allowing output voltage and input voltage to be in same direction

Country Status (1)

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CN (1) CN104300786A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107248816A (en) * 2017-08-11 2017-10-13 株洲宏达微电子科技有限公司 A kind of new converter circuit based on traditional Buck Boost topologys

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6037755A (en) * 1998-07-07 2000-03-14 Lucent Technologies Inc. Switching controller for a buck+boost converter and method of operation thereof
JP2004312909A (en) * 2003-04-09 2004-11-04 Shindengen Electric Mfg Co Ltd Operation method of power supply device and power supply
JP2012029361A (en) * 2010-07-20 2012-02-09 Dsp Oyo Gijutsu Kenkyusho:Kk Power supply circuit
CN103595240A (en) * 2013-11-20 2014-02-19 天津大学 Device and method for reducing boosting amplitude of Boost type PFC converter
CN103595247A (en) * 2013-10-29 2014-02-19 江苏绿扬电子仪器集团有限公司 DCDC converter in photovoltaic power generation system
CN203608082U (en) * 2013-11-20 2014-05-21 天津大学 Device for reducing boost amplitude of Boost type PFC converter
CN203617904U (en) * 2013-12-30 2014-05-28 广东瑞德智能科技股份有限公司 Buck-boost power supply conversion circuit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6037755A (en) * 1998-07-07 2000-03-14 Lucent Technologies Inc. Switching controller for a buck+boost converter and method of operation thereof
JP2004312909A (en) * 2003-04-09 2004-11-04 Shindengen Electric Mfg Co Ltd Operation method of power supply device and power supply
JP2012029361A (en) * 2010-07-20 2012-02-09 Dsp Oyo Gijutsu Kenkyusho:Kk Power supply circuit
CN103595247A (en) * 2013-10-29 2014-02-19 江苏绿扬电子仪器集团有限公司 DCDC converter in photovoltaic power generation system
CN103595240A (en) * 2013-11-20 2014-02-19 天津大学 Device and method for reducing boosting amplitude of Boost type PFC converter
CN203608082U (en) * 2013-11-20 2014-05-21 天津大学 Device for reducing boost amplitude of Boost type PFC converter
CN203617904U (en) * 2013-12-30 2014-05-28 广东瑞德智能科技股份有限公司 Buck-boost power supply conversion circuit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张斐，许建平，杨平，陈章勇: "两开关伪连续导电模式Buck-Boost功率因数校正变换器", 《中国电机工程学报》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107248816A (en) * 2017-08-11 2017-10-13 株洲宏达微电子科技有限公司 A kind of new converter circuit based on traditional Buck Boost topologys

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Application publication date: 20150121