CN205901574U - Zero voltage switch half -bridge control circuit - Google Patents
Zero voltage switch half -bridge control circuit Download PDFInfo
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- CN205901574U CN205901574U CN201620907120.4U CN201620907120U CN205901574U CN 205901574 U CN205901574 U CN 205901574U CN 201620907120 U CN201620907120 U CN 201620907120U CN 205901574 U CN205901574 U CN 205901574U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a zero voltage switch half -bridge control circuit relates to the electromagnetic induction heating technology field, and it comprises power supply circuit, little the control unit MCU circuit, isolated form drive circuit and operation button, little the control unit MCU circuit press the key -type connection with power supply circuit, isolated form drive circuit and operation respectively. The utility model discloses a little the control unit MCU circuit, full data signal processing procedure, the circuit uses in a flexible way, and is efficient.
Description
Technical field
This utility model is related to electromagnetic induction heating technology field, specifically relates to a kind of Zero-voltage switch half-bridge and controls
Circuit.
Background technology
Electromagnetic induction heating derives from the electromagnetic induction phenomenon that faraday finds, that is, the electric current of alternation produces sense in the conductor
Induced current, thus lead to conductor temp.-elevating.Since finding that electric current occurred after heat effect by wire, just occur in that in the world much from
Thing research manufactures the utility model man of electric heater.1890, Sweden technical staff's utility model First induction melting furnace-open
Slot type has core stove；1893, the U.S. occurred in that electric iron blank；1909, the appearance of electric stove achieved and is converted into heat from electric energy
The process of energy；1916, American's utility model locked groove had core stove, and electromagnetic induction technology progresses into practical stage.
Publication No. 203352447u, publication date is that the Chinese patent literature on December 18th, 2013 discloses a kind of soft open
Close half-bridge circuit, including first switch pipe q1, second switch pipe q2, capacitance cr, transformator t, the first rectifier tube dr1, the
Two rectifier tube dr2, filter capacitor c and load r.The drain electrode of first switch pipe q1 connects power positive end, the source of first switch pipe q1
Pole connects the drain electrode of second switch pipe q2, and the source electrode of second switch pipe q2 connects power supply negative terminal；Transformator t include primary side winding and
Vice-side winding；Two connection ends of primary side winding are respectively communicated with drain electrode and the source electrode of second switch pipe q2；Capacitance cr connects
On the former limit circuit of transformator t；First rectifier tube dr1, the second rectifier tube dr2, filter capacitor c and load r are connected to secondary
On circuit.This utility model can improve the application performance of circuit, open-minded in the zvs of the existing switching tube of relatively large load scope interior-excess,
Reduce switching tube power attenuation, reduce the difficulty of output synchronous rectification simultaneously.
Prior art with above-mentioned patent documentation as representative, it is not full digital processing to the process of signal, circuit
Work efficiency is relatively low.
Utility model content
This utility model aims to the defect and deficiency existing for above-mentioned prior art, provides a kind of ZVT half
Bridge control circuit, this utility model adopts micro-control unit mcu circuit, complete digital signal processing procedure, and circuit, using flexibly, is imitated
Rate is high.
This utility model is by being realized using following technical proposals:
A kind of Zero-voltage switch half-bridge control circuit it is characterised in that: its by power circuit, micro-control unit mcu circuit,
Isolated form drive circuit and operation button composition, described micro-control unit mcu circuit is driven with power circuit, isolated form respectively
Circuit and operation are by bonded.
Described power circuit adopts linear transformer power supply or switching type power supply.
Described micro-control unit mcu circuit adopts avr or arm single-chip microcomputer, and micro-control unit mcu circuit is used for receiving institute
State the instruction of operation button, after micro-control unit mcu processing of circuit, send working signal to isolated form drive circuit.
Described isolated form drive circuit adopts any one in optical coupling isolation circuit and transformer isolation circuit.
Described operation button is used for circuit parameter being modified and adjusting, and sends out to micro-control unit mcu circuit
Send work order.
Described micro-control unit mcu circuit include disconnecting switch circuit, signaling conversion circuit, voltage detecting circuit and
Mcu chip, its circuit connecting relation is: mcu chip respectively with disconnecting switch circuit, signaling conversion circuit and voltage detecting circuit
Connect.
Described disconnecting switch circuit includes interface p1, resistance r1, resistance r2, integrated package u1 and electric capacity c1, disconnecting switch
Circuit input end connects button control signal, and output connects mcu chip the 2nd pin, 2 feet of interface p1, resistance r2, the 1 of integrated package u1
Foot is connected, the 2 foot ground connection of 1 foot of interface p1 and integrated package u1, and resistance r1, electric capacity c1 series connection is followed by the positive and negative two ends in power supply,
The 3 of integrated package u1,4 feet are in parallel with electric capacity c1, and the midpoint of resistance r1, electric capacity c1 series connection connects mcu chip the 2nd pin.
Described signaling conversion circuit include diode d4, diode d5, diode d6, diode d7, diode d8, two
Pole pipe d9, diode d10, interface p3, resistance r10, resistance r11, resistance r12, resistance r13, resistance r14, electric capacity c2, electric capacity
C4, described signaling conversion circuit input termination sensor signal, output connect mcu chip the 13rd, 20,21,22 pins, diode
D4, diode d7, diode d9 series connection, diode d5, diode d8, diode d10 series connection, diode d4, diode d5
Negative pole is connected, and diode d9, the positive pole of diode d10 are grounded after being connected；Resistance r11, resistance r12 series connection after with electric capacity c2, two
Pole pipe d6 is in parallel；In parallel with diode d6 after resistance r10, electric capacity c4 series connection；Diode d6 negative pole and mcu chip the 13rd, 20,
21st, 22 pins are connected；The midpoint of resistance r10, electric capacity c4 series connection is connected with mcu chip the 9th pin；Resistance r13, resistance r14 go here and there
The midpoint that connection is followed by after the negative pole of diode d9, diode d10, resistance r13, resistance r14 series connection connects positive source；Interface p3
1,2 feet connect diode d4, the positive pole of diode d5 respectively；Diode d7, the positive pole of diode d9 connect mcu chip the 40th, 41,
42 pins.
Described voltage detecting circuit includes resistance r7, resistance r8, resistance r9 and electric capacity c3, and described voltage detecting circuit is defeated
Enter the detected power supply of termination, output termination mcu chip the 18th pin；Resistance r7, resistance r8, resistance r9 series connection, electric capacity c3 and electricity
Resistance r9 is in parallel, one end ground connection of resistance r9, and the midpoint of resistance r8, resistance r9 series connection connects mcu chip the 18th pin.
Described mcu chip adopts the stm32 series monolithic that ST Microelectronics produces, and chip 5,6 feet connect crystal oscillator
Y1, diode d1, diode d2, diode d3 negative pole are grounded after being connected, and positive pole is gone here and there with resistance r4, resistance r5, resistance r6 respectively
Connection, resistance r4, resistance r5, the resistance r6 other end connect respectively mcu chip the 10th, 11,12 feet；The 26 of mcu chip, 29 feet connect respectively
The 1 of interface p4,2 feet, 31,37 feet of mcu chip are connected with 4 feet of interface p2,30,34,38 feet of mcu chip and interface p2's
3 feet are connected, and 44 feet of mcu chip are connected with 2 feet of interface p2, and resistance r3 is in parallel with 1,2 feet of interface p2, and the 1 and 5 of interface p2
Foot connects negative terminal and the anode of power supply respectively.
Operating process: after power on circuitry, micro-control unit mcu circuit is in holding state, power supply indicator d1 is bright.When connecing
When mouth p1 receives high level, single-chip microcomputer enters program work, and lamp diode d3 is bright for running status, 1, the 2 feet outputs of interface p4
Square wave, two square wave phase differences are 180 degree, and square wave sends into isolated form drive circuit.Sensor acquisition signal feeds back to microcontroller list
First mcu circuit interface p3 foot.After micro-control unit mcu circuit obtains signal, feedback display lamp diode d2 is bright, and according to feedback
The dutycycle of Signal Regulation pwm1 and pwm2 and frequency, thus realize power adjustments and phase adjusted.
Described integrated package u1 specifically refers to the chip of model stm32f101, stm32f301 or stm32f401.
Compared with prior art, the beneficial effects of the utility model show:
In this utility model, by power circuit, micro-control unit mcu circuit, isolated form drive circuit and operation button group
The Zero-voltage switch half-bridge control circuit becoming, the micro-control unit mcu circuit being adopted, it is mainly by disconnecting switch circuit, letter
Number change-over circuit, voltage detecting circuit and mcu chip composition, this circuit adopts micro-control unit mcu circuit, at complete digital signal
Reason process, circuit is using flexible, efficiency high.The reference point of the upper switching tube in half-bridge circuit and lower switching tube driving voltage differs
Sample, so needing the type of drive using non-co- ground, isolated form drive circuit can make circuit more reliable, prevent because of electromagnetic interference
And make ground wire voltage wave zone carry out circuit false triggering.
Brief description
Below in conjunction with specification drawings and specific embodiments, the utility model is described in further detail, its
In:
Fig. 1 is Zero-voltage switch half-bridge control circuit block diagram；
Fig. 2 is micro-control unit mcu circuit block diagram；
Fig. 3 is micro-control unit mcu circuit theory diagrams.
In figure labelling:
401st, Zero-voltage switch half-bridge control circuit, 2021, isolated form drive circuit, 2022, power circuit, 2023, micro-
Control unit mcu circuit, 2025, operation button；
4011st, disconnecting switch circuit, 4012, signaling conversion circuit, 4013, voltage detecting circuit, 4014, mcu chip.
Specific embodiment
Embodiment 1
As this utility model one better embodiment, it discloses a kind of Zero-voltage switch half-bridge control circuit, described
Zero-voltage switch half-bridge control circuit 401 by power circuit 2022, micro-control unit mcu circuit 2023, isolated form drive electricity
Road 2021 and operation button 2025 form, described micro-control unit mcu circuit 2023 respectively with power circuit 2022, isolated form
Drive circuit 2021 and operation button 2025 connect；Described power circuit 2022 adopts linear transformer power supply or switching mode electricity
Source；Described micro-control unit mcu circuit 2023 adopts avr or arm single-chip microcomputer, and micro-control unit mcu circuit is used for receiving institute
State the instruction of operation button 2025, send to isolated form drive circuit 2021 after micro-control unit mcu circuit 2023 is processed
Working signal；Described isolated form drive circuit 2021 adopts any one in optical coupling isolation circuit and transformer isolation circuit；
Described operation button 2025 is used for circuit parameter being modified and adjusting, and to 2023, micro-control unit mcu circuit
Send work order.
Embodiment 2
As preferred forms of the present utility model, on the basis of above-described embodiment, described micro-control unit mcu
Circuit 2023 includes disconnecting switch circuit 4011, signaling conversion circuit 4012, voltage detecting circuit 4013 and mcu chip 4014,
Its circuit connecting relation is: mcu chip 4014 respectively with disconnecting switch circuit 4011, signaling conversion circuit 4012 and voltage detecting
Circuit 4013 connects.
Described disconnecting switch circuit 4011 includes interface p1, resistance r1, resistance r2, integrated package u1 and electric capacity c1, isolation
On-off circuit 4011 input termination button control signal, output connects mcu chip 4014 the 2nd pin, 2 feet of interface p1, resistance r2,
The 2 foot ground connection of the 1 foot series connection of integrated package u1,1 foot of interface p1 and integrated package u1, resistance r1, electric capacity c1 series connection is followed by power supply
Positive and negative two ends, 3,4 feet of integrated package u1 are in parallel with electric capacity c1, and the midpoint of resistance r1, electric capacity c1 series connection connects mcu chip 4014
2nd pin.
Described signaling conversion circuit 4012 includes diode d4, diode d5, diode d6, diode d7, diode
D8, diode d9, diode d10, interface p3, resistance r10, resistance r11, resistance r12, resistance r13, resistance r14, electric capacity c2,
Electric capacity c4, described signaling conversion circuit 4012 input termination sensor signal, output connects mcu chip 4014 the 13rd, 20,21,22
Pin, diode d4, diode d7, diode d9 series connection, diode d5, diode d8, diode d10 series connection, diode d4,
The negative pole of diode d5 is connected, and diode d9, the positive pole of diode d10 are grounded after being connected；Resistance r11, resistance r12 series connection after with
Electric capacity c2, diode d6 are in parallel；In parallel with diode d6 after resistance r10, electric capacity c4 series connection；Diode d6 negative pole and mcu chip
4014 the 13rd, 20,21,22 pins are connected；The midpoint of resistance r10, electric capacity c4 series connection is connected with mcu chip 4014 the 9th pin；Electricity
The midpoint that resistance r13, resistance r14 series connection are followed by after the negative pole of diode d9, diode d10, resistance r13, resistance r14 series connection connects
Positive source；The 1 of interface p3,2 feet connect diode d4, the positive pole of diode d5 respectively；Diode d7, the positive pole of diode d9 connect
Mcu chip 4014 the 40th, 41,42 pins.
Described voltage detecting circuit 4013 includes resistance r7, resistance r8, resistance r9 and electric capacity c3, described voltage detecting electricity
The detected power supply of road 4013 input termination, output termination mcu chip 4014 the 18th pin；Resistance r7, resistance r8, resistance r9 string
Connection, electric capacity c3 is in parallel with resistance r9, and one end of resistance r9 is grounded, and the midpoint that resistance r8, resistance r9 connect connects mcu chip 4,014 the
18 pins.
Described mcu chip 4014 adopts the stm32 series monolithic that ST Microelectronics produces, and chip 5,6 feet connect
Crystal oscillator y1, diode d1, diode d2, diode d3 negative pole be connected after be grounded, positive pole respectively with resistance r4, resistance r5, resistance
R6 connects, resistance r4, resistance r5, the resistance r6 other end connect respectively mcu chip 4014 the 10th, 11,12 feet；Mcu chip 4014
26th, 1,2 feet of 29 feet difference connection interface p4,31,37 feet of mcu chip 4014 are connected with 4 feet of interface p2, mcu chip 4014
30,34,38 feet be connected with 3 feet of interface p2,44 feet of mcu chip 4014 are connected with 2 feet of interface p2, resistance r3 and interface
The 1 of p2,2 feet are in parallel, and 1 and 5 feet of interface p2 connect negative terminal and the anode of power supply respectively.
Operating process: after power on circuitry, micro-control unit mcu circuit 2023 is in holding state, power supply indicator d1 is bright.
When interface p1 receives high level, single-chip microcomputer enters program work, and lamp diode d3 is bright for running status, 1,2 feet of interface p4
Output square wave, two square wave phase differences are 180 degree, and square wave sends into isolated form drive circuit 2021.Sensor acquisition signal feeds back to
Micro-control unit mcu circuit 2023 interface p3 foot.Micro-control unit mcu circuit 2023 feeds back display lamp diode after obtaining signal
D2 is bright, and the dutycycle according to feedback Signal Regulation pwm1 and pwm2 and frequency, thus realizing power adjustments and phase adjusted.
Described integrated package u1 specifically refers to the chip of model stm32f101, stm32f301 or stm32f401.
Claims (9)
1. a kind of Zero-voltage switch half-bridge control circuit it is characterised in that: it is by power circuit (2022), micro-control unit mcu
Circuit (2023), isolated form drive circuit (2021) and operation button (2025) composition, described micro-control unit mcu circuit
(2023) it is connected with power circuit (2022), isolated form drive circuit (2021) and operation button (2025) respectively.
2. a kind of Zero-voltage switch half-bridge control circuit according to claim 1 it is characterised in that: described power circuit
(2022) linear transformer power supply or switching type power supply are adopted.
3. a kind of Zero-voltage switch half-bridge control circuit according to claim 1 it is characterised in that: described microcontroller list
First mcu circuit (2023) adopts avr or arm single-chip microcomputer, and micro-control unit mcu circuit (2023) is used for receiving described operation button
(2025) instruction, processes backward isolated form drive circuit (2021) through micro-control unit mcu circuit (2023) and sends work
Signal.
4. a kind of Zero-voltage switch half-bridge control circuit according to claim 1 it is characterised in that: described isolated form drives
Galvanic electricity road (2021) adopts any one in optical coupling isolation circuit and transformer isolation circuit.
5. a kind of Zero-voltage switch half-bridge control circuit according to claim 1 it is characterised in that: described microcontroller list
First mcu circuit (2023) include disconnecting switch circuit (4011), signaling conversion circuit (4012), voltage detecting circuit (4013) and
Mcu chip (4014), its circuit connecting relation is: mcu chip (4014) is changed with disconnecting switch circuit (4011), signal respectively
Circuit (4012) and voltage detecting circuit (4013) connect.
6. a kind of Zero-voltage switch half-bridge control circuit according to claim 5 it is characterised in that: described disconnecting switch
Circuit (4011) includes interface p1, resistance r1, resistance r2, integrated package u1 and electric capacity c1, disconnecting switch circuit (4011) input
Connect button control signal, output connects mcu chip (4014) the 2nd pin, 2 feet of interface p1, resistance r2, the 1 foot string of integrated package u1
The 2 foot ground connection of connection, 1 foot of interface p1 and integrated package u1, resistance r1, electric capacity c1 series connection is followed by the positive and negative two ends in power supply, integrated
The 3 of block u1,4 feet are in parallel with electric capacity c1, and the midpoint of resistance r1, electric capacity c1 series connection connects mcu chip (4014) the 2nd pin.
7. a kind of Zero-voltage switch half-bridge control circuit according to claim 5 it is characterised in that: described signal conversion
Circuit (4012) includes diode d4, diode d5, diode d6, diode d7, diode d8, diode d9, diode
D10, interface p3, resistance r10, resistance r11, resistance r12, resistance r13, resistance r14, electric capacity c2, electric capacity c4, described signal conversion
Circuit (4012) input termination sensor signal, output connect mcu chip (4014) the 13rd, 20,21,22 pins, diode d4, two
Pole pipe d7, diode d9 series connection, diode d5, diode d8, diode d10 series connection, diode d4, the negative pole phase of diode d5
Even, diode d9, the positive pole of diode d10 are grounded after being connected；With electric capacity c2, diode d6 after resistance r11, resistance r12 series connection
In parallel；In parallel with diode d6 after resistance r10, electric capacity c4 series connection；Diode d6 negative pole and mcu chip (4014) the 13rd, 20,
21st, 22 pins are connected；The midpoint of resistance r10, electric capacity c4 series connection is connected with mcu chip (4014) the 9th pin；Resistance r13, resistance
The midpoint that r14 series connection is followed by after the negative pole of diode d9, diode d10, resistance r13, resistance r14 series connection connects positive source；
The 1 of interface p3,2 feet connect diode d4, the positive pole of diode d5 respectively；Diode d7, the positive pole of diode d9 connect mcu chip
(4014) the 40th, 41,42 pins.
8. a kind of Zero-voltage switch half-bridge control circuit according to claim 5 it is characterised in that: described voltage detecting
Circuit (4013) includes resistance r7, resistance r8, resistance r9 and electric capacity c3, and described voltage detecting circuit (4013) input termination is tested
Survey power supply, output termination mcu chip (4014) the 18th pin；Resistance r7, resistance r8, resistance r9 series connection, electric capacity c3 and resistance r9
Parallel connection, one end ground connection of resistance r9, the midpoint of resistance r8, resistance r9 series connection connects mcu chip (4014) the 18th pin.
9. a kind of Zero-voltage switch half-bridge control circuit according to claim 5 it is characterised in that: described mcu chip
(4014) adopt the stm32 series monolithic that ST Microelectronics produces, chip 5,6 feet connect crystal oscillator y1, diode d1, two poles
Pipe d2, diode d3 negative pole are grounded after being connected, and positive pole connected with resistance r4, resistance r5, resistance r6 respectively, resistance r4, resistance r5,
The resistance r6 other end connect respectively mcu chip (4014) the 10th, 11,12 feet；26,29 feet of mcu chip (4014) connection interface respectively
The 1 of p4,2 feet, 31,37 feet of mcu chip (4014) are connected with 4 feet of interface p2,30,34,38 feet of mcu chip (4014) with
3 feet of interface p2 are connected, and 44 feet of mcu chip (4014) are connected with 2 feet of interface p2, and 1,2 feet of resistance r3 and interface p2 are simultaneously
Connection, 1 and 5 feet of interface p2 connect negative terminal and the anode of power supply respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620907120.4U CN205901574U (en) | 2016-08-12 | 2016-08-12 | Zero voltage switch half -bridge control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620907120.4U CN205901574U (en) | 2016-08-12 | 2016-08-12 | Zero voltage switch half -bridge control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205901574U true CN205901574U (en) | 2017-01-18 |
Family
ID=57778765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620907120.4U Active CN205901574U (en) | 2016-08-12 | 2016-08-12 | Zero voltage switch half -bridge control circuit |
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| Country | Link |
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| CN (1) | CN205901574U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601123A (en) * | 2017-11-13 | 2018-09-28 | 成都航空职业技术学院 | A kind of variable frequency induction heater circuit |
-
2016
- 2016-08-12 CN CN201620907120.4U patent/CN205901574U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601123A (en) * | 2017-11-13 | 2018-09-28 | 成都航空职业技术学院 | A kind of variable frequency induction heater circuit |
| CN108601123B (en) * | 2017-11-13 | 2021-03-23 | 成都航空职业技术学院 | Variable-frequency induction heating circuit |
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