CN205544985U - 5V changes 12V voltage conversion circuit - Google Patents

5V changes 12V voltage conversion circuit Download PDF

Info

Publication number
CN205544985U
CN205544985U CN201620140187.XU CN201620140187U CN205544985U CN 205544985 U CN205544985 U CN 205544985U CN 201620140187 U CN201620140187 U CN 201620140187U CN 205544985 U CN205544985 U CN 205544985U
Authority
CN
China
Prior art keywords
circuit
voltage conversion
conversion circuit
voltage
utility
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620140187.XU
Other languages
Chinese (zh)
Inventor
张娜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin 57 Technology Co ltd
Original Assignee
Tianjin 57 Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin 57 Technology Co ltd filed Critical Tianjin 57 Technology Co ltd
Priority to CN201620140187.XU priority Critical patent/CN205544985U/en
Application granted granted Critical
Publication of CN205544985U publication Critical patent/CN205544985U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a 5V changes 12V voltage conversion circuit, include: 5V power input connector, voltage conversion circuit, 12V power output interface, voltage conversion circuit includes: adopt the rectifier circuit of bridge rectifier, the direct current that uses the power device of the accuse type full IGBT chopper circuit that steps up, produce the PWM signal for the control circuit of the break -make of the main power device among the control direct current chopper circuit, overvoltage crowbar to the overvoltage protection among over -current protection and the opening and closing process. The utility model has the advantages of being simple in structure and convenient in operation, rectifier circuit can effective filtering power clutter, obtains stable input voltage, the direct current step up chopper circuit can be effectual will be reliable with voltage build -up to required numerical value, the control circuit signal is stable, output current that safe and reliable, protection circuit can effective protection circuits, voltage are no longer than the settlement scope.

Description

A kind of 5V Turn 12V Voltage conversion circuit
Technical field
This utility model relates to power supply changeover device field, particularly relates to a kind of 5V and turns 12V voltage conversion circuit.
Background technology
Along with developing rapidly of electron electric power technology, power equipment is extensive in many sector applications, all of power equipment is required for stable supply of electric power, in prior art, photovoltaic conversion equipment be generally a certain have buck or boost chip process, although this is capable of the purpose of buck or boost, but, generally there is following deficiency: one is boosting or blood pressure lowering horizontal instability, as relatively low in the cheap of fruit chip or technology water product, the amplitude range of its output voltage may be bigger, is unfavorable for the use of electrical equipment;Two is that spoilage is higher, if having input voltage or electric current instability, integrated chip easily burns out, and causes the damage of equipment;Three is circuit protection scarce capacity.
Therefore, the technical problem that those skilled in the art are in the urgent need to address is exactly: a kind of proposition one method how to innovate, using the teaching of the invention it is possible to provide safe, stable, simple voltage conversion circuit, reaches the long-time reliable purpose used.
Utility model content
The purpose of this utility model is to provide a kind of 5V to turn 12V voltage conversion circuit, with the problem solving to propose in above-mentioned background technology.
For solving the problems referred to above, the utility model discloses a kind of 5V and turn 12V voltage conversion circuit, including: 5V power input interface, voltage conversion circuit, 12V power output interface, described voltage conversion circuit includes the rectification circuit using bridge rectifier;Use full-control type power device IGBT(igbt) DC boosting chopper circuit;Produce pwm signal, for controlling the control circuit of the break-make of the main power device in DC chopper circuit;Protection circuit to the overvoltage protection in overcurrent protection and switching process.
Preferably, described rectification circuit uses four diode one full bridge rectifiers of composition, and an inductance of connecting becomes low pass filter.
Preferably, described control circuit uses UG3525 chip to produce PWM chopping signal.
Preferably, described DC boosting chopper circuit includes an IGBT, electric capacity, resistance, a diode, and the grid of described IGBT connects the PWM chopping signal of UG3525 output.
Compared with prior art, this utility model has the advantage that
This utility model simple in construction, easy to operate; rectification circuit can effectively filter out power supply clutter; obtain stable voltage; voltage effectively can will be risen to required numerical value by DC boosting chopper circuit reliably; control circuit signal stabilization; safe and reliable, protection circuit effectively the output electric current of protection circuit, voltage can be less than set point.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, introduce the accompanying drawing used in embodiment or description of the prior art is done one simply below.
Fig. 1 is the structural representation that a kind of 5V of the present utility model turns 12V voltage conversion circuit.
Fig. 2 is rectification circuit circuit diagram of the present utility model.
Fig. 3 is DC boosting chopper circuit circuit diagram of the present utility model.
Fig. 4 is control circuit circuit diagram of the present utility model.
Fig. 5 is protection circuit circuit diagram of the present utility model.
In figure: 1,5V power input interface;2, voltage conversion circuit;21, rectification circuit;22, DC boosting chopper circuit;23, control circuit;24, protection circuit;3,12V power output interface.
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
A kind of 5V that this utility model provides as shown in Figure 1 turns 12V voltage conversion circuit, and including 5V power input interface 1, voltage conversion circuit 2,12V power output interface 3, described voltage conversion circuit includes the rectification circuit 21 using bridge rectifier;Use full-control type power device IGBT(igbt) DC boosting chopper circuit 22;Produce pwm signal, for controlling the control circuit 23 of the break-make of the main power device in DC chopper circuit;Protection circuit 24 to the overvoltage protection in overcurrent protection and switching process.
As in figure 2 it is shown, rectification circuit 21 uses four diode one full bridge rectifiers of composition, and an inductance of connecting becomes low pass filter.Owing to rectification circuit voltage out contains bigger ripple, quality of voltage is not very good, therefore one inductance of series connection becomes low pass filter, filters the higher hamonic wave of electric current, and electric capacity in parallel can filter the higher hamonic wave of voltage, thus reduce ripple.By inductance, the electrical characteristic of electric capacity, more satisfactory DC voltage can be obtained.
As it is shown on figure 3, described DC boosting chopper circuit 22 includes an IGBT, electric capacity, resistance, a diode, the grid of described IGBT connects the PWM chopping signal of UG3525 output.DC boosting chopper circuit 22 is the core of this Circuits System, the selection of copped wave device can bear big voltage and conducting internal resistance is little, switching frequency, the high-power IGBT pipe that switch time is little, connect on the left of circuit rectified after 5V voltage, right side exports for chopping voltage, and IGBT grid connects the PWM chopping signal of SG3525 output.
As shown in Figure 4; described control circuit 23 needs the function realized to be to produce pwm signal; for controlling the break-make of main power device in copped wave booster circuit; by regulation dutycycle; reaching to control the purpose of output voltage size, this circuit uses the special chip UC3525 directly producing PWM, this chip internal integrated protective circuit; improve the safety of Circuits System, there is capacity of resisting disturbance.
As shown in Figure 5; described protection circuit 24 is the protection of IGBT; it is primarily directed to overcurrent protection and overvoltage protection; overcurrent protection is mainly by a variable resistance of connecting in main circuit; at its two ends parallel connection electromagnetic relay coil; when the electric current of main circuit is higher than certain numerical value, the switch Guan Bi of electromagnetic relay, connect low level;Excess voltage protection principle is as circuit overcurrent protection.
Above a kind of 5V provided by the utility model is turned 12V voltage conversion circuit to be described in detail, principle of the present utility model and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method of the present utility model and core concept thereof;Simultaneously for one of ordinary skill in the art, according to thought of the present utility model, the most all will change, in sum, this specification content should not be construed as restriction of the present utility model.
Last it is noted that the foregoing is only preferred embodiment of the present utility model; it is not limited to this utility model; although this utility model being described in detail with reference to previous embodiment; for a person skilled in the art; technical scheme described in foregoing embodiments still can be modified by it; or wherein portion of techniques feature is carried out equivalent; all within spirit of the present utility model and principle; the any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.

Claims (4)

1. a 5V turns 12V voltage conversion circuit, it is characterised in that including: 5V power input interface, voltage conversion circuit, 12V power output interface, and described voltage conversion circuit includes:
Use the rectification circuit of bridge rectifier;
Use full-control type power device IGBT(igbt) DC boosting chopper circuit;
Produce pwm signal, for controlling the control circuit of the break-make of the main power device in DC chopper circuit;
Overvoltage crowbar to the overvoltage protection in overcurrent protection and switching process.
5V the most according to claim 1 turns 12V voltage conversion circuit, it is characterised in that described rectification circuit uses four diode one full bridge rectifiers of composition, and an inductance of connecting becomes low pass filter.
5V the most according to claim 1 turns 12V voltage conversion circuit, it is characterised in that described control circuit uses UG3525 chip to produce PWM chopping signal.
4. turn 12V voltage conversion circuit according to the 5V described in claim 1 or 3, it is characterized in that, described DC boosting chopper circuit includes an IGBT, electric capacity, resistance, a diode, and the grid of described IGBT connects the PWM chopping signal of UG3525 output.
CN201620140187.XU 2016-02-25 2016-02-25 5V changes 12V voltage conversion circuit Expired - Fee Related CN205544985U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620140187.XU CN205544985U (en) 2016-02-25 2016-02-25 5V changes 12V voltage conversion circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620140187.XU CN205544985U (en) 2016-02-25 2016-02-25 5V changes 12V voltage conversion circuit

Publications (1)

Publication Number Publication Date
CN205544985U true CN205544985U (en) 2016-08-31

Family

ID=56779042

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620140187.XU Expired - Fee Related CN205544985U (en) 2016-02-25 2016-02-25 5V changes 12V voltage conversion circuit

Country Status (1)

Country Link
CN (1) CN205544985U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108206517A (en) * 2018-03-08 2018-06-26 广州金升阳科技有限公司 A kind of low cost inputs anti-overvoltage crowbar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108206517A (en) * 2018-03-08 2018-06-26 广州金升阳科技有限公司 A kind of low cost inputs anti-overvoltage crowbar
WO2019169904A1 (en) * 2018-03-08 2019-09-12 广州金升阳科技有限公司 Low-cost input anti-overvoltage protection circuit
CN108206517B (en) * 2018-03-08 2020-05-19 广州金升阳科技有限公司 Low-cost input overvoltage-resistant protection circuit

Similar Documents

Publication Publication Date Title
CN203840210U (en) AC inverter circuit
US10096435B2 (en) Digitalized double-excitation uninterrupted switching power supply
CN104113262A (en) Variable frequency air-conditioner and motor control system based on Z-source converter
CN104227194A (en) Electric-welding-machine control system with full-voltage input and control system thereof
CN105792438A (en) Buck type single-stage LED drive circuit of unity power factor
CN205544985U (en) 5V changes 12V voltage conversion circuit
CN104617580A (en) Resonant type current limiting system and control method thereof
WO2018129835A1 (en) Vienna pfc-based smart half bridge sine wave voltage conversion circuit
WO2018129832A1 (en) Vienna pfc-based smart half bridge modified wave voltage conversion circuit
CN208522648U (en) A kind of high power pfc circuit
CN203554355U (en) A variable frequency air-conditioner and a motor control system based on a Z source converter
US8823336B2 (en) Bridgeless power factor corrector with single choke and method of operating the same
CN103592511B (en) A kind of circuit detecting ac power frequency
CN102820655B (en) A kind of power electronic system control method taking into account voltage support and failure current limit
Arifin et al. Input switched closed-loop single phase ĈUK AC to DC converter with improved power quality
CN113381593B (en) Front-end auxiliary circuit of high-power capacitive load instrument
CN105429453B (en) A kind of high power factor direct current power supply based on pfc circuit
CN203942440U (en) A kind of power factor regulating circuit
CN203840004U (en) Intelligent high efficiency fast charger
CN204012645U (en) Domestic overvoltage protection switch
CN208707543U (en) Switching Power Supply with overcurrent protection Self-resetting
CN104993721A (en) Three-phase voltage tripling rectifying circuit
CN206164353U (en) Electricity -saving device
CN203691226U (en) Novel high-frequency switching power supply power factor correction apparatus
CN2869961Y (en) Power frequency ac, stabilizer regulated by high-frequency PWM

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160831

Termination date: 20180225

CF01 Termination of patent right due to non-payment of annual fee