WO2017128695A1 - Zero-voltage quasi-resonant boost circuit - Google Patents

Zero-voltage quasi-resonant boost circuit Download PDF

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Publication number
WO2017128695A1
WO2017128695A1 PCT/CN2016/094774 CN2016094774W WO2017128695A1 WO 2017128695 A1 WO2017128695 A1 WO 2017128695A1 CN 2016094774 W CN2016094774 W CN 2016094774W WO 2017128695 A1 WO2017128695 A1 WO 2017128695A1
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circuit
winding coil
power supply
zero
resonant
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PCT/CN2016/094774
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French (fr)
Chinese (zh)
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陈顺鹏
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深圳嘉润茂电子有限公司
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Publication of WO2017128695A1 publication Critical patent/WO2017128695A1/en

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    • 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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • 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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  • the utility model relates to the technical field of a booster circuit, in particular to a zero-voltage quasi-resonant booster circuit.
  • the existing booster circuit In the process of turning on, the existing booster circuit inputs a certain value of the turn-on voltage to the switch switching circuit, which causes a certain loss to the switch switching circuit, thereby reducing the service life thereof. If the switching circuit can be driven by a pulse with a suitable frequency and duty cycle, zero voltage conduction is turned on at the turn-on moment of the switching circuit, and zero voltage or negative voltage is turned on at the turn-off instant, reducing the loss of the switching circuit. That will greatly extend the life of the booster circuit.
  • the present invention provides a zero voltage quasi-resonant boost circuit with simple structure and convenient operation.
  • the present invention provides a zero-voltage quasi-resonant boosting circuit including a power supply circuit, a resonant circuit, a transformer, a rectifier circuit, and a switching circuit; the two ends of the first winding coil on the transformer are respectively powered a circuit is connected, two ends of the second winding coil on the transformer are respectively connected to the input and output ends of the current, and two ends of the resonant circuit are respectively connected to two ends of the first winding coil, and the switch switching circuit is disposed at Between the power supply circuit and the first winding coil, the switch switching circuit is further provided with an interface for inputting a PWM driving pulse, and two ends of the rectifier circuit are respectively connected to the second winding coil.
  • the switch switching circuit is provided with a MOS transistor, a gate of the MOS transistor is connected to an interface of an input PWM driving pulse, a drain of the MOS transistor is connected to a first winding coil, and a source of the MOS transistor
  • the vibrating circuit has a vibrating capacitor built therein, and two ends of the vibrating capacitor are respectively connected to the first winding coil, and the capacitance value C of the vibrating capacitor satisfies the following conditions:
  • the rectifier circuit has a rectifying capacitor and a rectifier diode, the input end of the rectifier diode is connected to the second winding coil, and the output ends of the rectifier diode are respectively connected to the rectifying capacitor and the current input end, and the two capacitors are respectively connected The terminals are connected to the input of the current and the output of the current, respectively.
  • the boosting circuit further includes a clamping diode connected in parallel with the MOS transistor, and the input end of the clamping diode is connected to the power supply circuit, and the output end of the clamping diode is connected to the first winding coil.
  • the power supply circuit has a power supply capacitor built therein, and one end of the power supply capacitor is connected to the first winding coil, and the other end of the power supply capacitor is respectively connected to the MOS tube and the clamp diode.
  • the zero-voltage quasi-resonant boosting circuit of the present invention realizes the switching circuit under the cooperation of the resonant circuit and the first winding coil of the transformer by inputting a PWM driving pulse on the switching circuit.
  • the zero-voltage conduction is turned on at the instant of turning on, and the zero voltage or the negative voltage is turned on at the moment of turning off, thereby reducing the loss of the switching circuit, and effectively prolonging the service life of the zero-voltage quasi-resonant boosting circuit.
  • 1 is a first equivalent circuit diagram of a zero-voltage quasi-resonant booster circuit of the present invention
  • FIG. 2 is a second equivalent circuit diagram of a zero-voltage quasi-resonant booster circuit of the present invention
  • FIG. 3 is a third equivalent circuit diagram of a zero-voltage quasi-resonant booster circuit of the present invention.
  • FIG. 4 is a fourth equivalent circuit diagram of the zero-voltage quasi-resonant booster circuit of the present invention.
  • a zero-voltage quasi-resonant boost circuit includes a power supply circuit 10, a resonant circuit 11, a transformer 12, a rectifier circuit 13, and a switch switching circuit 14; a first winding coil NP on the transformer 12
  • the two ends of the second winding coil NS on the transformer 12 are respectively connected to the input and output ends of the current, and the two ends of the resonant circuit 11 are respectively connected to the two ends of the first winding coil NP.
  • the switch switching circuit 14 is disposed between the power supply circuit 10 and the first winding coil NP.
  • the switch switching circuit 14 is further provided with an interface for inputting a PWM drive pulse, and both ends of the rectifier circuit 13 are respectively connected to the second winding coil NS.
  • the zero-voltage quasi-resonant boosting circuit of the present invention realizes the cooperation of the resonant circuit 11 and the first winding coil NP of the transformer 12 by inputting a PWM driving pulse on the switching circuit 14
  • the switch switching circuit 14 When the switch switching circuit 14 is turned on, the zero voltage is turned on, and the zero voltage or the negative voltage is turned on at the closing moment, thereby reducing the loss of the switch switching circuit 14, and effectively prolonging the service life of the zero voltage quasi-resonant boost circuit.
  • the switch switching circuit 14 is provided with a MOS transistor Q1, the gate of the MOS transistor Q1 is connected to the interface of the input PWM driving pulse, and the drain of the MOS transistor Q1 is connected to the first winding coil NP, and the MOS transistor Q1
  • the vibrating circuit has a vibrating capacitor C1 built therein, and two ends of the vibrating capacitor C1 are respectively connected to the first winding coil NP, and the capacitance value C of the vibrating capacitor C1 satisfies the following conditions:
  • the rectifier circuit 13 has a rectifier capacitor C2 and a rectifier diode D1.
  • the input terminal of the rectifier diode D1 is connected to the second winding coil NS, and the output terminals of the rectifier diode D1 are respectively connected to the rectifier capacitor C2 and the current input terminal. Connected, the two ends of the capacitor are connected to the input of the current and the output of the current, respectively.
  • the boosting circuit further includes a clamping diode D2, the clamping diode D2 is connected in parallel with the MOS transistor Q1, and the input end of the clamping diode D2 is connected to the power supply circuit 10, and the output end of the clamping diode D2 It is connected to the first winding coil NP.
  • the power supply circuit 10 has a power supply capacitor C3 built therein. One end of the power supply capacitor C3 is connected to the first winding coil NP, and the other end of the power supply capacitor C3 is connected to the MOS transistor Q1 and the clamp diode D2, respectively.
  • Phase A When the MOS transistor Q1 enters the off state after the end of the first pulse, at this time, because the voltage across the resonant capacitor C1 cannot be abruptly changed, the voltage across the MOS transistor Q1 is close to zero to achieve the zero voltage of the MOS transistor Q1.
  • Phase B When the MOS tube Q1 is turned off, the energy stored in the first winding coil NP and the resonant capacitor C1 are LC-resonant, and the resonant frequency satisfies the above requirements.
  • the LC resonance enters the negative voltage phase, it is performed by the clamp diode D2. Clamping, so the voltage across the MOS tube Q1 is approximately zero voltage;
  • Phase C When the LC resonance enters the zero voltage phase, that is, the negative half wave phase, the second pulse comes, and the MOS transistor Q1 is turned on. At this time, the zero voltage conduction of the MOS transistor Q1 is realized.

Abstract

A zero-voltage quasi-resonant boost circuit comprises a power supply circuit (10), a resonant circuit (11), a transformer (12), a rectification circuit (13), and a switch switching circuit (14). Two ends of a first wire winding coil (NP) on the transformer (12) are separately connected to the power supply circuit (10), and two ends of a second wire winding coil (NS) on the transformer (12) are respectively connected to an input/output end of a current. Two ends of the resonant circuit (11) are respectively connected to the two ends of the first wire winding coil (NP). The switch switching circuit (14) is arranged between the power supply circuit (10) and the first wire winding coil (NP). An interface for inputting a PWM drive pulse is arranged on the switch switching circuit (14). Two ends of the rectification circuit (13) are separately connected to the second wire winding coil (NS). By inputting a PWM drive pulse on the switch switching circuit (14), with the operation between the resonant circuit (11) and the first wire winding coil (NP) on the transformer (12), zero-voltage conduction is achieved in the switch-on moment of the switch switching circuit (14), and zero-voltage conduction or negative-voltage conduction is achieved on the switch-off moment of the switch switching circuit (14), thereby reducing loss of the switch switching circuit (14).

Description

零电压准谐振升压电路Zero voltage quasi-resonant booster circuit 技术领域Technical field
本实用新型涉及升压电路的技术领域，尤其涉及一种零电压准谐振升压电路。The utility model relates to the technical field of a booster circuit, in particular to a zero-voltage quasi-resonant booster circuit.
背景技术Background technique
现有的升压电路在导通的过程中，会向开关切换电路输入一定数值的导通电压，这样对开关切换电路会造成一定的损耗，从而会减少其使用寿命。如果能够通过合适的频率和占空比的脉冲驱动开关切换电路，来实现在开关切换电路在导通瞬间为零电压导通，关闭瞬间为零电压或负电压导通，减少开关切换电路的损耗，那将能够大大延长升压电路的使用寿命。In the process of turning on, the existing booster circuit inputs a certain value of the turn-on voltage to the switch switching circuit, which causes a certain loss to the switch switching circuit, thereby reducing the service life thereof. If the switching circuit can be driven by a pulse with a suitable frequency and duty cycle, zero voltage conduction is turned on at the turn-on moment of the switching circuit, and zero voltage or negative voltage is turned on at the turn-off instant, reducing the loss of the switching circuit. That will greatly extend the life of the booster circuit.
实用新型内容Utility model content
针对上述技术中存在的不足之处，本实用新型提供一种结构简单、操作方便的零电压准谐振升压电路。In view of the deficiencies in the above technology, the present invention provides a zero voltage quasi-resonant boost circuit with simple structure and convenient operation.
为了达到上述目的，本实用新型一种零电压准谐振升压电路，包括供电电路、谐振电路、变压器、整流电路以及开关切换电路；所述变压器上的第一绕线线圈的两端分别与供电电路相连，所述变压器上的第二绕线线圈的两端分别与电流的输入输出端相连，所述谐振电路的两端分别第一绕线线圈的两端相连，所述开关切换电路设置在供电电路与第一绕线线圈之间，所述开关切换电路上还设置有输入PWM驱动脉冲的接口，所述整流电路的两端分别与第二绕线线圈相连。In order to achieve the above object, the present invention provides a zero-voltage quasi-resonant boosting circuit including a power supply circuit, a resonant circuit, a transformer, a rectifier circuit, and a switching circuit; the two ends of the first winding coil on the transformer are respectively powered a circuit is connected, two ends of the second winding coil on the transformer are respectively connected to the input and output ends of the current, and two ends of the resonant circuit are respectively connected to two ends of the first winding coil, and the switch switching circuit is disposed at Between the power supply circuit and the first winding coil, the switch switching circuit is further provided with an interface for inputting a PWM driving pulse, and two ends of the rectifier circuit are respectively connected to the second winding coil.
其中，所述开关切换电路上设置有一MOS管，所述MOS管的栅极与输入PWM驱动脉冲的接口相连，所述MOS管的漏极接入第一绕线线圈，所述MOS管的源级与供电电路相连，所述输入PWM驱动脉冲的频率参数为F＝20～100KHZ，占空比为0-90％。 Wherein, the switch switching circuit is provided with a MOS transistor, a gate of the MOS transistor is connected to an interface of an input PWM driving pulse, a drain of the MOS transistor is connected to a first winding coil, and a source of the MOS transistor The stage is connected to the power supply circuit, and the frequency parameter of the input PWM driving pulse is F=20-100KH Z , and the duty ratio is 0-90%.
其中，所述振谐电路中内置有振谐电容，所述振谐电容的两端分别与第一绕线线圈相连，所述振谐电容的电容值C满足以下条件：The vibrating circuit has a vibrating capacitor built therein, and two ends of the vibrating capacitor are respectively connected to the first winding coil, and the capacitance value C of the vibrating capacitor satisfies the following conditions:
(1/2*3.14*Lp*C)>F；(1/2*3.14*Lp*C)<2F，其中Lp表示变压器电感量。(1/2*3.14*Lp*C)>F;(1/2*3.14*Lp*C)<2F, where Lp represents the inductance of the transformer.
其中，所述整流电路内置有整流电容以及整流二极管，所述整流二极管的输入端与第二绕线线圈相连，且整流二极管的输出端分别与整流电容以及电流输入端相连，所述电容的两端分别于电流的输入端以及电流的输出端相连。Wherein, the rectifier circuit has a rectifying capacitor and a rectifier diode, the input end of the rectifier diode is connected to the second winding coil, and the output ends of the rectifier diode are respectively connected to the rectifying capacitor and the current input end, and the two capacitors are respectively connected The terminals are connected to the input of the current and the output of the current, respectively.
其中，该升压电路还包括钳位二极管，所述钳位二极管与MOS管并联连接，且钳位二极管的输入端与供电电路相连，且钳位二极管的输出端与第一绕线线圈相连。The boosting circuit further includes a clamping diode connected in parallel with the MOS transistor, and the input end of the clamping diode is connected to the power supply circuit, and the output end of the clamping diode is connected to the first winding coil.
其中，所述供电电路中内置有供电电容，所述供电电容的一端与第一绕线线圈相连，且供电电容的另一端分别与MOS管以及钳位二极管相连。The power supply circuit has a power supply capacitor built therein, and one end of the power supply capacitor is connected to the first winding coil, and the other end of the power supply capacitor is respectively connected to the MOS tube and the clamp diode.
本实用新型的有益效果是：The beneficial effects of the utility model are:
与现有技术相比，本实用新型的零电压准谐振升压电路，通过在开关切换电路上输入PWM驱动脉冲，在谐振电路与变压器第一绕线线圈的配合作用下，实现在开关切换电路导通瞬间为零电压导通，关闭瞬间为零电压或负电压导通，从而减少了开关切换电路的损耗，可有效延长该零电压准谐振升压电路的使用寿命。Compared with the prior art, the zero-voltage quasi-resonant boosting circuit of the present invention realizes the switching circuit under the cooperation of the resonant circuit and the first winding coil of the transformer by inputting a PWM driving pulse on the switching circuit. The zero-voltage conduction is turned on at the instant of turning on, and the zero voltage or the negative voltage is turned on at the moment of turning off, thereby reducing the loss of the switching circuit, and effectively prolonging the service life of the zero-voltage quasi-resonant boosting circuit.
附图说明DRAWINGS
图1为本实用新型零电压准谐振升压电路的第一等效电路图；1 is a first equivalent circuit diagram of a zero-voltage quasi-resonant booster circuit of the present invention;
图2为本实用新型零电压准谐振升压电路的第二等效电路图；2 is a second equivalent circuit diagram of a zero-voltage quasi-resonant booster circuit of the present invention;
图3为本实用新型零电压准谐振升压电路的第三等效电路图；3 is a third equivalent circuit diagram of a zero-voltage quasi-resonant booster circuit of the present invention;
图4为本实用新型零电压准谐振升压电路的第四等效电路图。4 is a fourth equivalent circuit diagram of the zero-voltage quasi-resonant booster circuit of the present invention.
主要元件符号说明如下：The main component symbols are described below:
10、供电电路           11、谐振电路10, power supply circuit 11, resonant circuit
12、变压器             13、整流电路12, transformer 13, rectifier circuit
14、开关切换电路 14, switch switching circuit
具体实施方式detailed description
为了更清楚地表述本实用新型，下面结合附图对本实用新型作进一步地描述。In order to more clearly illustrate the present invention, the present invention will be further described below in conjunction with the accompanying drawings.
参阅图1-4，本实用新型一种零电压准谐振升压电路，包括供电电路10、谐振电路11、变压器12、整流电路13以及开关切换电路14；变压器12上的第一绕线线圈NP的两端分别与供电电路10相连，变压器12上的第二绕线线圈NS的两端分别与电流的输入输出端相连，谐振电路11的两端分别第一绕线线圈NP的两端相连，开关切换电路14设置在供电电路10与第一绕线线圈NP之间，开关切换电路14上还设置有输入PWM驱动脉冲的接口，整流电路13的两端分别与第二绕线线圈NS相连。1-4, a zero-voltage quasi-resonant boost circuit includes a power supply circuit 10, a resonant circuit 11, a transformer 12, a rectifier circuit 13, and a switch switching circuit 14; a first winding coil NP on the transformer 12 The two ends of the second winding coil NS on the transformer 12 are respectively connected to the input and output ends of the current, and the two ends of the resonant circuit 11 are respectively connected to the two ends of the first winding coil NP. The switch switching circuit 14 is disposed between the power supply circuit 10 and the first winding coil NP. The switch switching circuit 14 is further provided with an interface for inputting a PWM drive pulse, and both ends of the rectifier circuit 13 are respectively connected to the second winding coil NS.
相较于现有技术，本实用新型的零电压准谐振升压电路，通过在开关切换电路14上输入PWM驱动脉冲，在谐振电路11与变压器12第一绕线线圈NP的配合作用下，实现在开关切换电路14导通瞬间为零电压导通，关闭瞬间为零电压或负电压导通，从而减少了开关切换电路14的损耗，可有效延长该零电压准谐振升压电路的使用寿命。Compared with the prior art, the zero-voltage quasi-resonant boosting circuit of the present invention realizes the cooperation of the resonant circuit 11 and the first winding coil NP of the transformer 12 by inputting a PWM driving pulse on the switching circuit 14 When the switch switching circuit 14 is turned on, the zero voltage is turned on, and the zero voltage or the negative voltage is turned on at the closing moment, thereby reducing the loss of the switch switching circuit 14, and effectively prolonging the service life of the zero voltage quasi-resonant boost circuit.
在本实施例中，开关切换电路14上设置有一MOS管Q1，MOS管Q1的栅极与输入PWM驱动脉冲的接口相连，MOS管Q1的漏极接入第一绕线线圈NP，MOS管Q1的源级与供电电路10相连，输入PWM驱动脉冲的频率参数为F＝20～100KHZ，占空比为0-90％。In this embodiment, the switch switching circuit 14 is provided with a MOS transistor Q1, the gate of the MOS transistor Q1 is connected to the interface of the input PWM driving pulse, and the drain of the MOS transistor Q1 is connected to the first winding coil NP, and the MOS transistor Q1 The source level is connected to the power supply circuit 10, and the frequency parameter of the input PWM drive pulse is F=20-100KH Z , and the duty ratio is 0-90%.
在本实施例中，振谐电路中内置有振谐电容C1，振谐电容C1的两端分别与第一绕线线圈NP相连，振谐电容C1的电容值C满足以下条件：In this embodiment, the vibrating circuit has a vibrating capacitor C1 built therein, and two ends of the vibrating capacitor C1 are respectively connected to the first winding coil NP, and the capacitance value C of the vibrating capacitor C1 satisfies the following conditions:
(1/2*3.14*Lp*C)>F；(1/2*3.14*Lp*C)<2F，其中Lp表示变压器电感量。(1/2*3.14*Lp*C)>F;(1/2*3.14*Lp*C)<2F, where Lp represents the inductance of the transformer.
在本实施例中，整流电路13内置有整流电容C2以及整流二极管D1，整流二极管D1的输入端与第二绕线线圈NS相连，且整流二极管D1的输出端分别与整流电容C2以及电流输入端相连，电容的两端分别于电流的输入端以及电流的输出端相连。In this embodiment, the rectifier circuit 13 has a rectifier capacitor C2 and a rectifier diode D1. The input terminal of the rectifier diode D1 is connected to the second winding coil NS, and the output terminals of the rectifier diode D1 are respectively connected to the rectifier capacitor C2 and the current input terminal. Connected, the two ends of the capacitor are connected to the input of the current and the output of the current, respectively.
在本实施例中，该升压电路还包括钳位二极管D2，钳位二极管D2与MOS管Q1并联连接，且钳位二极管D2的输入端与供电电路10相连，且钳位二极管D2的输出端与第一绕线线圈NP相连。 In this embodiment, the boosting circuit further includes a clamping diode D2, the clamping diode D2 is connected in parallel with the MOS transistor Q1, and the input end of the clamping diode D2 is connected to the power supply circuit 10, and the output end of the clamping diode D2 It is connected to the first winding coil NP.
在本实施例中，供电电路10中内置有供电电容C3，供电电容C3的一端与第一绕线线圈NP相连，且供电电容C3的另一端分别与MOS管Q1以及钳位二极管D2相连。In the present embodiment, the power supply circuit 10 has a power supply capacitor C3 built therein. One end of the power supply capacitor C3 is connected to the first winding coil NP, and the other end of the power supply capacitor C3 is connected to the MOS transistor Q1 and the clamp diode D2, respectively.
工作原理：working principle:
A阶段：当MOS管Q1在第一个脉冲结束后进入关断状态，这时因为谐振电容C1两端电压不能突变，所以MOS管Q1两端电压接近于零从而实现MOS管Q1的零电压关断；Phase A: When the MOS transistor Q1 enters the off state after the end of the first pulse, at this time, because the voltage across the resonant capacitor C1 cannot be abruptly changed, the voltage across the MOS transistor Q1 is close to zero to achieve the zero voltage of the MOS transistor Q1. Broken
B阶段：当MOS管Q1关断后第一绕线线圈NP中储存的能量和谐振电容C1进行LC谐振，谐振频率满足以上要求，当LC谐振进入负电压阶段后，因为有钳位二极管D2进行钳位，所以MOS管Q1两端电压近似零电压；Phase B: When the MOS tube Q1 is turned off, the energy stored in the first winding coil NP and the resonant capacitor C1 are LC-resonant, and the resonant frequency satisfies the above requirements. When the LC resonance enters the negative voltage phase, it is performed by the clamp diode D2. Clamping, so the voltage across the MOS tube Q1 is approximately zero voltage;
C阶段：当LC谐振进入零电压阶段也就是负半波阶段的时候，第二个脉冲到来，MOS管Q1导通，此时实现了MOS管Q1的零电压导通。Phase C: When the LC resonance enters the zero voltage phase, that is, the negative half wave phase, the second pulse comes, and the MOS transistor Q1 is turned on. At this time, the zero voltage conduction of the MOS transistor Q1 is realized.
以上公开的仅为本实用新型的几个具体实施例，但是本实用新型并非局限于此，任何本领域的技术人员能思之的变化都应落入本实用新型的保护范围。 The above disclosure is only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims (6)

  1. 一种零电压准谐振升压电路，其特征在于，包括供电电路、谐振电路、变压器、整流电路以及开关切换电路；所述变压器上的第一绕线线圈的两端分别与供电电路相连，所述变压器上的第二绕线线圈的两端分别与电流的输入输出端相连，所述谐振电路的两端分别第一绕线线圈的两端相连，所述开关切换电路设置在供电电路与第一绕线线圈之间，所述开关切换电路上还设置有输入PWM驱动脉冲的接口，所述整流电路的两端分别与第二绕线线圈相连。A zero-voltage quasi-resonant boosting circuit, comprising: a power supply circuit, a resonant circuit, a transformer, a rectifier circuit, and a switch switching circuit; both ends of the first winding coil on the transformer are respectively connected to the power supply circuit, The two ends of the second winding coil on the transformer are respectively connected to the input and output ends of the current, and the two ends of the resonant circuit are respectively connected to the two ends of the first winding coil, and the switch switching circuit is disposed in the power supply circuit and the first Between a winding coil, an interface for inputting a PWM driving pulse is further disposed on the switching circuit, and two ends of the rectifier circuit are respectively connected to the second winding coil.
  2. 根据权利要求1所述的零电压准谐振升压电路，其特征在于，所述开关切换电路上设置有一MOS管，所述MOS管的栅极与输入PWM驱动脉冲的接口相连，所述MOS管的漏极接入第一绕线线圈，所述MOS管的源级与供电电路相连。The zero-voltage quasi-resonant boosting circuit according to claim 1, wherein a MOS transistor is disposed on the switching circuit, and a gate of the MOS transistor is connected to an interface of an input PWM driving pulse, the MOS transistor The drain is connected to the first winding coil, and the source of the MOS transistor is connected to the power supply circuit.
  3. 根据权利要求2所述的零电压准谐振升压电路，其特征在于，所述振谐电路中内置有振谐电容，所述振谐电容的两端分别与第一绕线线圈相连。The zero-voltage quasi-resonant boosting circuit according to claim 2, wherein a vibrating capacitor is built in the vibrating circuit, and two ends of the vibrating capacitor are respectively connected to the first winding coil.
  4. 根据权利要求3所述的零电压准谐振升压电路，其特征在于，所述整流电路内置有整流电容以及整流二极管，所述整流二极管的输入端与第二绕线线圈相连，且整流二极管的输出端分别与整流电容以及电流输入端相连，所述电容的两端分别于电流的输入端以及电流的输出端相连。The zero-voltage quasi-resonant boosting circuit according to claim 3, wherein the rectifying circuit has a rectifying capacitor and a rectifying diode, and an input end of the rectifying diode is connected to the second winding coil, and the rectifier diode is The output ends are respectively connected to the rectifying capacitor and the current input end, and the two ends of the capacitor are respectively connected to the input end of the current and the output end of the current.
  5. 根据权利要求4所述的零电压准谐振升压电路，其特征在于，该升压电路还包括钳位二极管，所述钳位二极管与MOS管并联连接，且钳位二极管的输入端与供电电路相连，且钳位二极管的输出端与第一绕线线圈相连。The zero-voltage quasi-resonant boosting circuit according to claim 4, wherein the boosting circuit further comprises a clamping diode, the clamping diode is connected in parallel with the MOS transistor, and the input end of the clamping diode and the power supply circuit Connected, and the output of the clamp diode is connected to the first winding coil.
  6. 根据权利要求5所述的零电压准谐振升压电路，其特征在于，所述供电电路中内置有供电电容，所述供电电容的一端与第一绕线线圈相连，且供电电容的另一端分别与MOS管以及钳位二极管相连。 The zero-voltage quasi-resonant boosting circuit according to claim 5, wherein a power supply capacitor is built in the power supply circuit, one end of the power supply capacitor is connected to the first winding coil, and the other end of the power supply capacitor is respectively Connected to the MOS tube and the clamp diode.
PCT/CN2016/094774 2016-01-29 2016-08-11 Zero-voltage quasi-resonant boost circuit WO2017128695A1 (en)

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CN205407592U (en) * 2016-01-29 2016-07-27 深圳嘉润茂电子有限公司 No -voltage quasi -resonance boost circuit

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