CN105471222B - A resonant circuit and a driving power supply system - Google Patents

A resonant circuit and a driving power supply system Download PDF

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CN105471222B
CN105471222B CN201410462700.2A CN201410462700A CN105471222B CN 105471222 B CN105471222 B CN 105471222B CN 201410462700 A CN201410462700 A CN 201410462700A CN 105471222 B CN105471222 B CN 105471222B
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circuit
switch
resonant
driving
switching
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CN105471222A (en
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刘旭君
向志强
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华为技术有限公司
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Abstract

本发明实施例提供了一种谐振驱动电路和电源系统,用以解决目前的谐振驱动电路的参数是针对谐振驱动电路中的各元器件的典型值设置的,当元器件的值不是其典型值时,这会使得驱动电路的功耗增大的问题。 When the embodiment provides a value which is not typical values ​​of components A resonant circuit and a driving power supply, a resonant current to address driver circuit parameter is set for a typical driving the resonator circuit in various components of the present invention when, which would make the power consumption of the driving circuit is increased. 该电路包括开关电路、初级绕组、次级绕组、可调电容电路、检测电路和控制电路,所述开关电路的输入端连接第一直流电源,所述初级绕组连接在所述开关电路的两个输出端之间;所述初级绕组与所述次级绕组绕在同一磁芯上构成变压器;所述检测电路,用于检测谐振驱动电路中的电流或功率;所述控制电路,用于根据所述检测电路检测到的信号调整所述可调电容电路的电容值,使得所述谐振驱动电路的功耗最小。 The circuit comprises a switching circuit, a primary winding, a secondary winding, an adjustable capacitor circuit, a detection circuit and a control circuit, the switching circuit is connected to a first input terminal of a DC power supply, said primary winding connected to the switching circuit in two between the output ends; the primary winding and the secondary winding wound on the same magnetic core constituting a transformer; a detection circuit for detecting a resonance driving circuit current or power; a control circuit for tunable capacitance value of the capacitor circuit to adjust the signal detected by the detection circuit so as to minimize the power consumption of the drive circuit resonance.

Description

一种谐振驱动电路和电源系统 A resonant circuit and a driving power supply system

技术领域 FIELD

[0001]本发明涉及电力电子技术领域,尤其涉及一种谐振驱动电路和电源系统。 [0001] The present invention relates to power electronic technologies, particularly to a driving circuit and a resonant power supply system.

背景技术 Background technique

[0002]高频化是电源转换的大趋势,其中,电源转化包括直流变交流,交流变直流和直流变直流等。 [0002] a high frequency power conversion trend, wherein the power source comprises a DC-AC conversion, AC to DC and DC to DC and the like. 目前的电源转换电路中的开关管的频率可以达到MHz,传统的矩形波驱动,损耗太大,需要采用低损耗的谐振式驱动。 Tube current frequency of the switching power conversion circuit can be achieved MHz, conventional rectangular-wave driving, the loss is too large, require low loss resonant drive. 但是,谐振式驱动对电源转换电路中的开关管的参数(如,输入电容、谐振电感等)的误差要求很高,而实际中的开关管的参数的误差的比较大, 这会导致批量生产的电源转换电路的良品率降低,维修率高,成本增加。 However, the resonant drive the error parameters of the switch in the power conversion circuit (e.g., input capacitance, the resonant inductor, etc.) demanding, and the error in the actual parameters of the switch is relatively large, which leads to production yield power conversion circuit is reduced, high maintenance cost increase.

[0003]图1为目前的一种谐振驱动电路,其中,电容C1、电容C2和电容C3为谐振电容,电容C2和电容C3中的一个电容是该谐振驱动电路所驱动的电源转换电路中正半周导通的功率开关管的输入电容(即功率开关管的控制端的等效电容),电容C2和电容C3中的另一个电容是该谐振驱动电路所驱动的电源转换电路中负半周导通的功率开关管的输入电容。 [0003] FIG driving circuit for the current A resonant, wherein the capacitor C1, capacitor C2 and capacitor C3 is a resonant capacitor, a capacitance of capacitor C2 and capacitor C3 is a power conversion circuit of the resonant driver circuit is driven CKS half the input capacitance of the power switch is turned on (i.e., the control terminal of the power switch equivalent capacitance), another capacitance capacitor C2 and capacitor C3 is the power conversion circuit of the resonant driver circuit is driven in the negative half cycle conduction power switch input capacitance tube. 绕组L1、绕组L2、绕组L3和绕组L4为谐振电感,且绕在同一磁芯上,相互紧密耦合,构成变压器。 Winding L1, coil L2, L3 and winding L4 of the resonant inductor windings, and wound on the same magnetic core, tightly coupled to each other to form a transformer. 谐振电感和谐振电容谐振产生正弦波电压(正弦波的频率为谐振频率),由绕组L3和绕组L4 输出,即驱动电压Vgl和驱动电压Vg2,从而驱动电源转换电路中的功率开关管。 Resonant inductor and resonant capacitor to generate a sine wave voltage resonance (resonance frequency sine wave frequency), by the windings L3 and L4 output winding, i.e., driving voltage Vgl and Vg2 of the driving voltage, thereby driving the power conversion circuit in the power switch. 开关S1和二极管D2构成开关管,方波发生器11控制开关S1,使得谐振电路在每个谐振周期与电源VCC接通一次以补充振荡过程中损失的能量,谐振电路是该谐振驱动电路中除开关S1、二极管D2、 方波发生器11和电源Vcc以外的电路;绕组L1和二极管D1构成箝位电路,用来箝位输出的驱动电压,即在驱动电压大于某一个值时,二极管D1导通,从而使得驱动电压不超过该值。 Switch S1 and the switch diode D2, the square wave generator 11 controls the switches S1, so that the resonant circuit is turned on in each cycle of the resonant power supply VCC and a supplement to energy lost during oscillation, the resonant circuit is a resonant drive circuit, in addition to circuits other than the switch S1, the diode D2, the square wave generator 11 and the power supply Vcc; when winding L1 and a diode D1 constitute a clamp circuit for clamping the output of the driving voltage, i.e. a driving voltage larger than a certain value, diode D1 pass, so that the drive voltage does not exceed this value. [0004] 在图1所示的驱动电路中,当电容C2的值发生变化,例如,电容C2的典型值为35nF, 电容C2的值有± 14%的误差,因此,电容C2的最小可能值为30nF,电容C2的最大可能值为40nF。 [0004] In the driving circuit shown in FIG. 1, when the value of the capacitance C2 is changed, for example, a typical value of the capacitor C2 35nF, the capacitor C2 has a value of ± 14% error, and therefore, the smallest possible value of capacitor C2 It is 30nF, the maximum possible value of the capacitor C2 40nF. 驱动电路中的各个元器件的参数是针对元器件参数的典型值设置的,也就是说,当电容C2的值为其典型值时,谐振频率与开关S1的控制信号的频率相等,驱动电路的功耗最小; 当电容C2的值不是其典型值时,例如小于典型值时,由于电容C2减小,因此,谐振频率高于开关S1的控制信号的频率,方波发生器11控制开关S1,使得谐振电路在长于一个谐振周期的时间内与电源VCC接通一次,这会使得驱动电路输出的驱动电压减小,从而导致驱动电路的功耗增大;当C2的值大于典型值时,由于电容C2增大,因此,谐振频率低于开关S1的控制信号的频率,方波发生器11控制开关S1,使得谐振电路在不到一个谐振周期的时间内与电源VCC接通一次,从而导致驱动电路的功耗增大。 Driving parameters of the respective components of the circuit is a typical component values ​​of the parameter set, that is, when the value of the typical value of the capacitor C2, the resonance frequency control signal S1 is equal to the switching frequency, the driving circuit minimum power consumption; when the value is not the typical value of capacitor C2, for example, less than the typical value, since the capacitor C2 is reduced, and therefore, the resonance frequency higher than the frequency of the control signal of the switch S1, the square wave generator 11 controls the switches S1, so that the resonance circuit in a resonance period of time longer than the first power source VCC is turned on, which causes the driving circuit outputs the drive voltage is reduced, resulting in increased power consumption of the driving circuit; when the value C2 is greater than the typical values, since capacitor C2 is increased, and therefore, the resonance frequency lower than the frequency of the control signal of the switch S1, the square wave generator 11 controls the switches S1, so that the resonance circuit is turned on and the power supply VCC in less than a resonance period of one time, thereby causing the drive circuit increases the power consumption.

[0005] 综上所述,目前的谐振驱动电路的参数,例如,开关S1的控制信号的频率是针对谐振驱动电路中的各元器件的典型值设置的,当元器件的值不是其典型值时,这会使得驱动电路的功耗增大。 [0005] In summary, the parameters of the resonant current driving circuit, for example, the frequency control signal of the switch S1 is set for a typical driving circuit of the resonator of the various components, when the value of the component which is not typical values when, this will increase the power consumption of the drive circuit.

发明内容 SUMMARY

[0006] 本发明实施例提供了一种谐振驱动电路和电源系统,用以解决目前的谐振驱动电路的参数是针对谐振驱动电路中的各元器件的典型值设置的,当元器件的值不是其典型值时,这会使得驱动电路的功耗增大的问题。 [0006] Example embodiments of the present invention provides A resonant circuit and a driving power supply, a resonant current to address driver circuit parameter is set for a typical driving circuit of the resonator of the various components, when the value of the component is not when typical values, which makes power consumption of the drive circuit increases.

[0007] 第一方面,本发明实施例提供一种谐振驱动电路,用于驱动电源转换电路中的开关管,包括开关电路、初级绕组、次级绕组、可调电容电路、检测电路和控制电路: [0007] In a first aspect, the embodiment provides a resonant drive circuit for driving the power conversion circuit switch, comprising a switching circuit, a primary winding, a secondary winding, an adjustable capacitor circuit, a detection circuit and a control circuit of the present invention :

[0008] 所述开关电路的输入端连接第一直流电源,所述初级绕组连接在所述开关电路的两个输出端之间;所述初级绕组与所述次级绕组绕在同一磁芯上构成变压器; [0008] The input terminal of the switching circuit is connected to a first direct current power source, the primary winding is connected between two output terminals of said switching circuit; said primary winding and said secondary winding wound on the same magnetic core constituting the transformer;

[0009]若所述电源转换电路中的开关管分别由所述谐振驱动电路中的初级绕组两端的电压信号和所述谐振驱动电路中的次级绕组两端的电压信号驱动,则所述可调电容电路、 所述变压器、由所述次级绕组两端的电压信号驱动的所述电源转换电路中的开关管的输入电容、以及由所述初级绕组两端的电压信号驱动的所述电源转换电路中的开关管的输入电容形成谐振回路;若所述电源转换电路中的开关管由所述谐振驱动电路中的次级绕组两端的电压信号驱动,则所述可调电容电路、所述变压器、以及由所述次级绕组两端的电压信号驱动的所述电源转换电路中的开关管的输入电容形成谐振回路; [0009] When the switch power converting circuit respectively by a voltage signal across the resonant circuit driving a primary winding and the resonant signal of the driving voltage across the secondary winding of the drive circuit, said adjustable capacitance circuit, the transformer, the input capacitance of the power switch switching circuit driven by the voltage signal across the secondary windings, and a signal for driving the voltage across the primary winding of the power conversion circuit input capacitance form a resonant circuit switching tube; if the power source switch driving signal conversion circuit said resonant voltage across the secondary windings by a drive circuit, said adjustable capacitor circuit, the transformer, and input capacitance of the power conversion circuit is driven by a signal of the voltage across the secondary winding of the resonant circuit forming the switch;

[0010]所述检测电路,用于检测谐振驱动电路中的电流或功率; [0010] The detection circuit for detecting a resonance driving circuit current or power;

[0011]所述控制电路,用于根据所述检测电路检测到的信号调整所述可调电容电路的电容值,使得所述谐振驱动电路的功耗最小。 [0011] The control circuit for adjusting a signal detected by the detection circuit in accordance with the adjustable capacitance of the capacitor circuit such that the minimum power consumption of the driving circuit resonance.

[0012]结合第一方面,在第一种可能的实现方式中,所述控制电路具体用于: [0012] with the first aspect, in a first possible implementation manner, the control circuit is configured to:

[0013]根据所述检测电路检测到的信号,调整所述可调电容电路的电容值,使得所述谐振回路中的谐振信号的频率与所述开关电路的控制信号的频率之差的绝对值最小。 [0013] The signal detected by the detection circuit, adjusting the capacitance value of the adjustable capacitor circuit, such that the absolute value of the difference between the frequency of the control signal in the resonant circuit the signal frequency of the switching of the resonant circuit a minimum.

[0014]结合第一方面,在第二种可能的实现方式中,若所述开关电路的两个输出端中的一个输出端接地,则所述可调电容电路与所述初级绕组并联;若所述开关电路的两个输出端均不接地,则所述可调电容电路与所述次级绕组并联。 [0014] with the first aspect, in a second possible implementation, if the two output terminals of a switching circuit output is grounded, the capacitance of the adjustable primary circuit and the parallel windings; if the two output terminals of the switch circuit not grounded, the adjustable capacitance of the secondary circuit and the parallel winding.

[0015]结合第一方面,在第三种可能的实现方式中,所述可调电容电路包括多个开关管和多个电容; [0015] with the first aspect, in a third possible implementation, the adjustable capacitor circuit comprises a plurality of tubes and a plurality of capacitive switches;

[GG16]多个电容串/并联后,与至少一个开关管串联,构成一个支路;多个支路并联构成所述可调电容电路。 [GG16] plurality of capacitive crosstalk / after parallel with the at least one switch connected in series to form a branch; a plurality of parallel branches constituting the adjustable capacitor circuit.

[0017]结合第一方面,在第四种可能的实现方式中,所述初级绕组和所述次级绕组中用于输出驱动信号的每个绕组中,除用于接地的接线端以外的接线端通过第二直流电源电路连接电源转换电路中的一个不同的功率开关管的控制端;所述驱动信号用于驱动电源转换电路中的功率开关管,使得电源转换电路正常工作。 [0017] with the first aspect, in a fourth possible implementation manner, the primary winding and the secondary winding for each winding output drive signal, in addition to the wiring for grounding the terminals end is connected to a control terminal of the power switch different power conversion circuit by a second DC power supply circuit; the drive signal for driving the power conversion circuit in the power switch, so that the power conversion circuit to work.

[0018]结合第一方面的第四种可能的实现方式,在第五种可能的实现方式中,用于输出驱动信号的一个绕组所连接的电源转换电路中的功率开关管不接地,所述第二直流电源电路包括第一二极管、第一电阻、第二电阻、第一电容; [0018] combination with the fourth aspect of the first possible implementation manner, in a fifth possible implementation, the winding of a power conversion circuit for outputting a drive signal to the connected power switch is not grounded, the The second DC power supply circuit includes a first diode, a first resistor, a second resistor, a first capacitor;

[0019]所述第一电阻与所述第一电容并联后,连接在该绕组的一个接线端与所述电源转换电路中的一个功率开关管的控制端之间;所述第一二极管的阳极连接该绕组的另一个接线端,所述第一二极管的阴极通过所述第二电阻连接该功率开关管的控制端。 Between [0019] After the first resistor and the first capacitor in parallel, a control terminal connected to one terminal of the winding of the power conversion circuit in a power switch; the first diode an anode connected to the other terminal of the winding, the first diode cathode connected to a control terminal of the power switch via the second resistor.

[0020]结合第一方面的第五种可能的实现方式,在第六种可能的实现方式中,用于输出驱动信号的一个绕组所连接的电源转换电路中的功率开关管接地,所述第二直流电源电路包括第二直流电源、第三电阻、第四电阻、第二电容; [0020] The binding fifth possible implementation of the first aspect, in a sixth possible implementation, the power switch for grounding a power conversion circuit outputs a drive signal winding being connected to said first two DC power circuit includes a second DC power source, a third resistor, a fourth resistor, a second capacitor;

[0021] 所述第三电阻与所述第二电容并联后,连接在该绕组的未接地的接线端与所述电源转换电路中的一个功率开关管的控制端之间;所述第二直流电源通过所述第四电阻连接该功率开关管的控制端。 Between [0021] After the third resistor and the second capacitor in parallel, a control terminal connected to the terminal of the winding and a non-grounded power switch of the power converter circuit; the second DC connecting a control terminal of the power supply switch by the fourth resistor.

[0022] 结合第一方面,在第七种可能的实现方式中,所述开关电路采用以下开关拓扑中的任意一种:正激开关拓扑、全桥开关拓扑、半桥开关拓扑、推挽开关拓扑和有源箝位开关拓扑。 [0022] with the first aspect, in the seventh possible implementation manner, the switching circuit switches employ any of the following topology: forward switch topologies, switch the full-bridge topology, the half bridge switching topology, push-pull switch active clamp topology and the switching topologies.

[0023]结合第一方面的第七种可能的实现方式,在第八种可能的实现方式中,所述开关电路采用正激开关拓扑或者推挽开关拓扑或者有源箝位开关拓扑,所述可调电容电路与所述初级绕组并联。 [0023] reference to the seventh possible implementation of the first aspect, in the eighth possible implementation manner, the switch circuit using a push-pull or forward topologies switch or switching active clamp topology switching topology, the adjustable capacitor circuit in parallel with the primary winding.

[0024]结合第一方面的第七种可能的实现方式,在第九种可能的实现方式中,所述开关电路采用全桥开关拓扑或者半桥开关拓扑,所述可调电容电路与所述次级绕组并联。 [0024] reference to the seventh possible implementation of the first aspect, in the ninth possible implementation mode, the switch circuit switching full bridge or a half bridge topology switching topology, the circuit and the adjustable capacitor a secondary winding connected in parallel.

[0025]结合第一方面的第七种可能的实现方式,在第十种可能的实现方式中,所述开关电路采用正激开关拓扑或有源箝位开关拓扑时,所述谐振驱动电路还包括箝位电路,所述箝位电路连接在所述初级绕组所在的回路中;所述箝位电路,用于将所述谐振驱动电路输出的信号的电压箝位至不大于预设电压。 When the [0025] reference to the seventh possible implementation of the first aspect, in the tenth possible implementation manner, the switch circuit switching topology using forward or active clamp switch topology, the resonant circuit further drive comprises a clamp circuit, the clamp circuit is connected in the circuit of the primary winding is located; said clamp circuit for clamping the voltage signal output from the resonant circuit is driven to not more than a predetermined voltage.

[0026] 第二方面,本发明实施例提供的一种电源系统,包括本发明实施例提供的谐振驱动电路和电源转换电路; [0026] a second aspect, the embodiment of the present invention is provided in a power supply system, comprising a resonant circuit provided in the drive and power conversion circuit embodiment of the present invention;

[0027] 所述谐振驱动电路,用于向所述电源转换电路中的各个开关管输出驱动信号; [0028]所述电源转换电路,用于在所述谐振驱动电路输出的驱动信号的控制下将接收到的电压转换,并输出。 [0027] The resonant driver circuit for driving the respective output signal of the switch circuit in the power converter; [0028] The power conversion circuit for controlling the driving signal output from the resonant drive circuit converting the received voltage, and outputs.

[0029] 本发明实施例的有益效果包括: [0029] Advantageous effects of the embodiments of the present invention comprises:

[0030] 本发明实施例提供的谐振驱动电路和电源系统,由于控制电路能够调整可调电容电路的电容值,而随着可调电容电路的电容值的改变,谐振驱动电路中的谐振回路中的谐振信号也会发生改变,因此,控制电路能够通过检测电路检测到的谐振驱动电路中的电流或功率来调整可调电容电路的电容值,最终使得谐振驱动电路的功耗最小。 [0030] The embodiment of the present invention, the resonant circuit and power driving system provided, since the control circuit can adjust the capacitance value of the variable capacitance circuit, and with the change in capacitance value of the variable capacitance circuit, a resonant drive circuit the resonant circuit the resonance signal is also changed, therefore, to drive the resonant circuit current or power to adjust the capacitance value of variable capacitance circuit of the control circuit can be detected by the detection circuit, so that a final minimum resonant power driving circuit. 因此,可调电容电路能够提高谐振驱动电路对元器件参数的容差能力,从而提高谐振驱动电路的产能品良率,降低成本。 Accordingly, adjustable capacitor circuit can be improved tolerance capability resonant drive circuit component parameters, thereby improving the yield of the resonant driver circuit can yield products, to reduce costs.

附图说明 BRIEF DESCRIPTION

[0031] 图1为现有技术中的谐振驱动电路的结构示意图; [0031] FIG. 1 is a schematic structural diagram of a driving circuit of the prior art resonator;

[0032] 图2 a为本发明实施例提供的谐振驱动电路的结构示意图之一; [0032] The structure of the resonator of FIG. 2 a driving circuit provided in one embodiment of the present invention, a schematic diagram;

[0033]图2b为本发明实施例提供的谐振驱动电路的结构示意图之二; [0033] FIG. 2b the resonant structure of the driving circuit according to an embodiment of the present invention, a schematic diagram of the two;

[0034] 图2c为本发明实施例提供的谐振驱动电路的结构示意图之三; Resonator structure embodiment provided by the drive circuit [0034] Figure 2c a schematic view of the present invention III;

[0035] 图2d为本发明实施例提供的谐振驱动电路的结构示意图之四; Resonator structure embodiment provided by the drive circuit [0035] Figure 2d a schematic view of the present invention is four;

[0036] 图3a为本发明实施例提供的谐振驱动电路的结构示意图之五; The schematic structural diagram of a resonance circuit provided in the embodiment of the drive [0036] the present invention, FIG. 3a five;

[0037] 图3b为本发明实施例提供的谐振驱动电路的结构示意图之六; [0037] FIG. 3b structure of the resonator driving circuit according to an embodiment of the present invention, a schematic diagram of six;

[0038] 图4a为本发明实施例提供的谐振驱动电路的结构示意图之七; [0038] FIG. 4a structure of the resonator driving circuit provided schematic embodiment seven of the present invention;

[0039] 图4b为本发明实施例提供的谐振驱动电路的结构示意图之八; Structure [0039] FIG. 4b of the present invention, the resonant drive circuit according to an embodiment of the schematic of eight;

[0040] 图5为本发明实施例提供的谐振驱动电路中的第一直流电源电路的结构示意图之» [0040] Fig 5 a schematic view of a first embodiment of a resonant circuit DC power source driving circuit provided in the structure »of the present invention,

[0041^图6为本发明实施例提供的谐振驱动电路中的第二直流电源电路的结构示意图之-* 〇 [0041 ^ 6 is a schematic configuration of the second DC power supply circuit resonant driving circuit provided in the embodiment of the present invention - * square

具体实施方式 Detailed ways

[0042]本发明实施例提供的谐振驱动电路和电源系统,由于谐振驱动电路中的可调电容电路的电容值是可以改变的,而随着可调电容电路的电容值的改变,谐振驱动电路中的谐振回路中的谐振信号也会发生改变,因此,可以根据该谐振信号来的调整可调电容电路的电容值,最终使得谐振驱动电路的功耗最小。 [0042] The embodiment of the resonant circuit and power driving system provided in the present invention, since the capacitance value of the resonant drive circuit the adjustable capacitance circuit can be changed, and the change in capacitance value with an adjustable capacitor circuit, a resonant drive circuit resonance signal in the resonant circuit will change, and therefore, a capacitance value can be adjusted according to the resonance signal of the tunable capacitance circuit, such that the final minimum resonant power driving circuit.

[0043]下面结合说明书附图,对本发明实施例提供的一种谐振驱动电路和电源系统的具体实施方式进行说明。 [0043] the following description in conjunction with the accompanying drawings, the present invention will be described DETAILED DESCRIPTION A driving circuit provided in the resonator and the power supply system embodiment.

[0044]本发明实施例提供的一种谐振驱动电路,用于驱动电源转换电路中的开关管,如图2a或图2b所示,包括开关电路21、初级绕组Lp、次级绕组Ls、可调电容电路22、检测电路23 和控制电路24;开关电路21的输入端连接第一直流电源Vccl,初级绕组Lp连接在开关电路21的两个输出端之间,初级绕组Lp和次级绕组Ls绕在同一磁芯上构成变压器; [0044] A resonant embodiment of the present invention to provide a driving circuit for driving the switch in the power conversion circuit, as shown in FIG. 2a or 2b, includes 21, a primary winding Lp, a secondary winding Ls switching circuit may be adjusting capacitance circuit 22, detection circuit 23 and a control circuit 24; an input terminal of the switching circuit 21 is connected to a first direct current power source VCCL, a primary winding Lp connected between the two outputs of the switch circuit 21, the primary winding Lp and the secondary winding Ls wound on the same magnetic core constituting a transformer;

[0045]若电源转换电路中的开关管分别由谐振驱动电路中的初级绕组lp两端的电压信号和谐振驱动电路中的次级绕组Ls两端的电压信号驱动,则可调电容电路22、变压器、由次级绕组Ls两端的电压信号驱动的该电源转换电路中的开关管的输入电容(图2a或图2b中未示出)、以及由初级绕组Lp两端的电压信号驱动的该电源转换电路中的开关管的输入电容(图2a或图2b中未示出)形成谐振回路;若电源转换电路中的开关管由谐振驱动电路中的次级绕组Ls两端的电压信号驱动,则可调电容电路22、变压器、以及由次级绕组Ls两端的电压信号驱动的该电源转换电路中的开关管的输入电容形成谐振回路; [0045] The driving voltage signal across the secondary winding Ls power conversion circuit when the switch circuit are a voltage signal across the primary winding lp driven and the resonance circuit is driven by the resonance, the variable capacitor circuit 22, a transformer, driven by a voltage signal across the secondary winding Ls of the input capacitance (not shown in Figure 2a or Figure 2b) of the power converter circuit switch, and the power conversion circuit is driven by a voltage signal across the primary winding Lp of input capacitance of switch (not shown in Figure 2a or Figure 2b) form a resonant circuit; signal if the voltage across the secondary winding Ls driver circuit power conversion circuit is driven by the resonance switch, the variable capacitor circuit 22, the input capacitance of the transformer, and the power conversion circuit is driven by a voltage signal across the secondary winding Ls of the switch transistor forming a resonant tank;

[0046]在图2a或图2b中,检测电路23,用于检测谐振驱动电路中的电流或功率;控制电路24,用于根据检测电路23检测到的信号调整可调电容电路22的电容值,使得该谐振驱动电路的功耗最小。 [0046] In FIGS. 2a or 2b, the detection circuit 23 for detecting a resonance driving circuit current or power; capacitance value control circuit 24 for adjusting the adjustable capacitor circuit detecting circuit 23 detects a signal according to the 22 , so that the power consumption of the resonant driver circuit is minimized.

[0047]其中,电源转换电路中的开关管分别由谐振驱动电路中的初级绕组Lp两端的电压信号和谐振驱动电路中的次级绕组Ls两端的电压信号驱动,是指电源转换电路中的一些开关管由谐振驱动电路中的初级绕组Lp两端的电压信号来驱动,电源转换电路中的另外一些开关管由谐振驱动电路中的次级绕组Ls两端的电压信号来驱动。 [0047] wherein, in the power conversion circuit switch respectively by a voltage signal across the primary winding Lp of the resonant circuit and the drive signal for driving the resonant voltage across the secondary winding Ls in the driving circuit, refers to the number of power conversion circuits voltage signal across the primary winding Lp in the switching circuit driven by the resonance tube is driven by the drive voltage signal across the secondary winding Ls Other circuits switch the power conversion circuit is driven by a resonance. 电源转换电路中的开关管由谐振驱动电路中的次级绕组Ls两端的电压信号驱动,是指电源转换电路中的每个开关管由谐振驱动电路中的不同的次级绕组Ls两端的电压信号驱动。 Power conversion circuit switch driving signal voltage across the secondary winding Ls of the resonant circuit by the driving means of each power conversion circuit switch signals of different voltages across the secondary winding Ls of the resonant driver circuit drive.

[0048]在图2a中,开关电路21的两个输出端中的一个输出端接地,因此,初级绕组Lp的一端连接开关电路的输出端,初级绕组的另一端通过检测电路23接地,可调电容电路22与初级绕组Lp并联;在图此中,开关电路M的两个输出端均不接地,初级绕组以连接在开关电路21的两个输出端之间,可调电容电路22与次级绕组Ls并联;在图2a中,次级绕组为2组,分别输出驱动信号Vgl和驱动信号Vg2;在图2b中,次级绕组为3组,其中的一组次级绕组Ls与可调电容电路22并联,另外两组次级绕组分别输出驱动信号Vgl和驱动信号Vg2;次级绕组的具体数量可以由谐振驱动电路所驱动的电源转换电路中的开关管的数目决定。 [0048] In Figure 2a, two output terminals of the switch circuit 21 to an output end, and therefore, the switching circuit connected to an output terminal end of the primary winding Lp, and the other end of the primary winding to ground through a detection circuit 23, adjustable capacitive circuit 22 in parallel with the primary winding Lp; in FIG herein, two output terminals of the switch circuit M is not grounded, the primary winding is connected between the two outputs of the switch circuit 21, variable capacitor 22 and the secondary circuit winding Ls in parallel; in Figure 2a, the secondary winding is equal to 2, outputs drive signals Vgl and Vg2 of the drive signal; in Figure 2b, three groups of the secondary winding, wherein the set of secondary windings Ls and a tunable capacitor 22 a parallel circuit, two additional secondary windings outputs driving signals Vgl and Vg2 of the drive signal; the number of the specific number of the secondary winding switch circuit power conversion circuit may be driven by the drive resonance is determined. 其中,驱动信号Vgl和驱动信号Vg2分别用于驱动电源转换电路中的不同的开关管。 Wherein the drive signals Vgl and Vg2 respectively driving signals for driving the power conversion circuit in a different switch.

[0049] 其中,图2a和图2b中的检测电路23可以为一个电阻,也可以为其它的电路结构。 [0049] wherein, FIGS. 2a and 2b of the detecting circuit 23 may be a resistor, or may be another circuit configuration. 图2a中的开关电路可以为一个开关管,开关管中除控制端以外的两端分别连接第一直流电源Vccl的正极,和初级绕组Lp的一个接线端;当然,图2a中的开关电路也可以采用其他的开关拓扑,如正激开关拓扑、反激开关拓扑、推挽开关拓扑和有源箝位开关拓扑等,这些开关拓扑的两个输出端中的一个输出端可以接地。 FIG. 2a switching circuit may be a switch, the switch control terminal other than the both ends are connected to the positive electrode of the first DC power source Vccl, and one terminal of the primary winding Lp; of course, the switching circuit 2a of FIG. other switches may be used topologies, such topologies forward switch, flyback switch topology, switches push-pull topology and active clamp topology and other switches, an output two output terminals of these switches in the topology may be grounded. 在图2b中,开关电路可以采用全桥开关拓扑、半桥开关拓扑等,这些开关拓扑的两个输出端都不可以接地。 In Figure 2b, a full-bridge switching circuit switching topology, the switch half-bridge topologies, these two outputs are not switching topology may be grounded. 在图2a和图2b中,还可以增加滤波电容,该滤波电容的一端连接第一直流电源Vccl的正极,该滤波电容的另一端连接检测电路23不接地的一端。 In Figures 2a and 2b, can also increase the filter capacitor, one end of the filter capacitor is connected to the positive electrode of the first DC power supply Vccl, the other terminal of the filter capacitor 23 is connected to a detection circuit not grounded at one end. 在图2b中,初级绕组Lp还可以与一个隔直电容串联后,连接在开关电路21的两个输出端之间。 In Figure 2b the primary winding Lp may further capacitor in series with a linear spacing, connected between two output terminals of the switching circuit 21.

[0050] 可选地,本发明实施例提供的谐振驱动电路中的开关电路可以采用正激开关拓扑、或全桥开关拓扑、或半桥开关拓扑、或推挽开关拓扑或有源箝位开关拓扑等。 [0050] Alternatively, the switching resonant circuit provided in the driving circuit of the embodiment of the present invention, the forward switching topology may be employed, or a full-bridge switching topology, or half-bridge switching topology, switch or push-pull topology and active clamp switch topologies.

[0051] 当本发明实施例提供的谐振驱动电路中的开关电路采用正激开关拓扑或有源箝位开关拓扑等不具有箝位功能的开关拓扑中的一种时,如图2c和图2d所示,本发明实施例提供的谐振驱动电路中还可以包括箝位电路25,箝位电路25连接在初级绕组Lp所在的回路中;箝位电路25,用于将谐振驱动电路输出的信号的电压箝位至不大于预设电压。 [0051] When the switching circuit resonators driving circuit provided in the embodiment of the present invention employs a switching topology that does not have a clamping function in the forward switch or the active clamp topology switching topology like, as shown in FIG. 2c and 2d , the present invention provides a resonance driving circuit may further comprise a clamp circuit 25, a clamp circuit 25 is connected in the circuit located in the primary winding Lp; clamp circuit 25, a signal for driving the resonant circuit of the output to clamp the voltage is not greater than the preset voltage. 其中箝位电路25可以采用图1中的绕组L1与二极管D1串联后接地的结构,当然也可以采用其他能够实现电压箝位功能的电路结构。 Wherein the clamping circuit 25 may be employed in the FIG. 1 grounded winding L1 and diode D1 in series configuration, although other voltage clamping circuit configuration can achieve functions may also be employed.

[0052]而当本发明实施例提供的谐振驱动电路中的开关电路采用全桥开关拓扑、半桥开关拓扑、推挽开关拓扑等具有箝位功能的开关拓扑时,本发明实施例提供的谐振驱动电路中不需要再另外设置箝位电路。 When [0052] the resonant circuit when the switch driving circuit provided in the embodiment of the present invention uses a full bridge switching topology, the switch half-bridge topology, push-pull switch topologies switching topology with a clamping function, the resonance provided by the embodiment of the present invention driving circuit does not need to separately provide a clamp circuit.

[0053]当开关电路采用正激开关拓扑或者推挽开关拓扑或者有源箝位开关拓扑,此时, 由于开关电路21的两个输出端中的一个输出端可以接地,因此,可调电容电路22与可以与初级绕组Lp并联,即如图2a或图2c所示。 [0053] When the switching circuit using a push-pull or forward topologies switch or switching active clamp topology switching topology, at this time, since an output two output terminals of the switch circuit 21 may be grounded, therefore, the adjustable capacitor circuit 22 and may be connected in parallel with the primary winding Lp, i.e., as shown in FIG. 2a or 2c.

[00M]当开关电路采用全桥开关拓扑或者半桥开关拓扑,此时,由于开关电路21的两个输出端均不能接地,因此,可调电容电路22可以与次级绕组Ls并联,即如图2b或图2d所示。 [00M] When the switching circuit using a full bridge or a half bridge switching topology switching topology, at this time, since the two output terminals of the switch circuit 21 are not grounded and therefore, the adjustable capacitor circuit 22 may be connected in parallel with the secondary winding Ls, i.e., such as As shown in FIG. 2b or FIG. 2d. [0055]可选地,控制电路24具体用于:根据检测电路23检测到的信号,调整可调电容电路22的电容值,使得谐振回路中的谐振信号的频率与开关电路21的控制信号的频率之差的绝对值最小,即使得谐振驱动电路尽可能地在一个谐振周期内与第一直流电源Vccl接通一次以补充振荡过程中损失的能量。 [0055] Alternatively, the control circuit 24 is configured to: according to a signal detected by the detecting circuit 23, to adjust the adjustable capacitance of the capacitor circuit 22 so that the switching frequency of the resonant circuit of the resonant circuit signal in the control signal 21 minimum absolute difference between the frequencies, even give a resonant driver circuit is turned on in a resonant cycle time to replenish energy lost during oscillation of the first DC power source Vccl as possible.

[0056] 可选地,可调电容电路包括多个开关管和多个电容;多个电容串/并联后,与至少一个开关管串联,构成一个支路;多个支路并联构成所述可调电容电路。 [0056] Alternatively, the variable capacitor circuit comprises a plurality of tubes and a plurality of capacitive switches; a plurality of capacitors after the series / parallel, with at least one switch connected in series to form a branch; a plurality of parallel branches constituting said adjusting capacitor circuit. 其中,多个电容串/ 并联是多个电容串联,或者多个电容并联,或者多个电容的连接关系中既有串联的,也有并联的。 Wherein the plurality of capacitors series / parallel a plurality of capacitors in series, or a plurality of capacitors in parallel, or in a plurality of capacitors connected both in series relation, there are connected in parallel.

[0057] 在图3a或图3b中,仅给出了四个电容,电容C1、电容C2、电容C3和电容C4,和四个开关管,开关管T1、开关管T2、开关管T3和开关管T4;电容C1与开关管11串联后成一个支路;电容C2与开关管T2串联后成一个支路;电容C3与开关管T3串联后成一个支路;电容C4与开关管T4串联后成一个支路;这四个支路并联构成可调电容电路。 [0057] In FIG. 3a or 3b, given only four capacitors, capacitor C1, a capacitor C2, a capacitor C3 and capacitor C4, and four switch, switching transistor Tl, switching transistor T2, T3 and switches the switch after T4 in series with a capacitor C4 switch; T4 tube; capacitor C1 and the switch 11 connected in series into one branch; the switching transistor T2 and capacitor C2 in series into one branch; capacitor C3 in series with a switching transistor T3 to a rear leg into one branch; four parallel branches constituting an adjustable capacitor circuit. 当开关管T1导通时,电容C1接入到谐振驱动电路中;当开关管T2导通时,电容C2接入到谐振驱动电路中;当开关管T3导通时,电容C3接入到谐振驱动电路中;当开关管T4导通时,电容C4接入到谐振驱动电路中;因此,4个支路可以组合出16种电容值。 When the switch T1 is turned on, the access to the resonant capacitor C1 in the drive circuit; T2 when the switch is turned on, the access to the resonant capacitor C2 driver circuit; when the switch T3 is turned on, the access to the resonant capacitor C3 driving circuit; when the switch T4 is turned on, the access to the resonant capacitor C4 driving circuit; Thus, four branches may be combined with 16 kinds of capacitance values.

[0058]此时,控制电路可以根据检测电路检测到的谐振信号确定谐振驱动电路的功耗, 然后改变可调电容电路的电容值,再次根据检测电路检测到的谐振信号确定谐振驱动电路的功耗,然后再次改变可调电容电路的电容值,…,直至找出谐振驱动电路的功耗最小时可调电容电路的电容值Cb,并将可调电容电路的电容值设置为Cb,使得谐振驱动电路处于最佳的谐振状态。 [0058] At this time, the control circuit may determine the power consumption of a resonant driver circuit in accordance with the detected resonance signal detection circuit, and then change the capacitance value of the variable capacitance circuit again determine the resonance driving circuit detection function of the resonance signal according to the detection circuit consumption, and then again changes the capacitance value of the variable capacitance circuit, ..., to identify the power consumption until the capacitance value of the resonant drive circuit the minimum adjustable capacitance Cb circuit, and the capacitance value of the variable capacitance circuit is disposed Cb, so that the resonance a driving circuit in the best resonant state.

[0059]可选地,所述初级绕组和所述次级绕组中用于输出驱动信号的每个绕组中,除用于接地的接线端以外的接线端通过第二直流电源电路连接电源转换电路中的一个不同的功率开关管的控制端;驱动信号用于驱动电源转换电路中的功率开关管,使得电源转换电路正常工作。 [0059] Alternatively, the primary winding of the winding and a secondary winding for each output drive signals, except for the ground terminal through the second terminal of the DC power circuit connecting the power conversion circuit a control terminal of the power switch different; a drive signal for driving the power conversion circuit in the power switch, so that the power conversion circuit to work.

[0060]在图4a中,初级绕组Lp与可调电容电路并联,初级绕组Lp不是用来输出驱动信号的,两组次级绕组Ls均可用来输出驱动信号,因此,这两组次级绕组中的每组次级绕组中除接地的接线端以外的接线端通过第二直流电源电路41连接电源转换电路中的一个不同的功率开关管的控制端,即向功率开关管的控制端输出驱动信号,从而在该接线端与功率开关管的控制端之间串联直流电压,这样可以在不提高第一直流电源Vccl的电压的情况下提高各个次级绕组输出的驱动电压,由于驱动损耗与第一直流电源Vccl的电压的平方成正比,因此,可以用较低的第一直流电源Vccl的电压来驱动谐振驱动电路,以降低驱动损耗, 并获得较高的驱动信号的电压。 [0060] In Figure 4a, primary winding Lp and the adjustable capacitor circuit in parallel with the primary winding Lp is not used to output the drive signal, two sets of the secondary winding Ls may be used to output a drive signal, therefore, the two sets of secondary windings in each group in addition to the secondary winding terminal of the grounding terminal by controlling the drive side output terminal of a different power control switch is connected to the second power conversion circuit 41 in the DC power circuit, namely power switch signal, such that the series between DC voltage terminal and the control terminal of the power switch tube, this can increase the driving voltage of each secondary winding in the output without increasing the voltage of the first DC power supply Vccl, since the driving loss and It is proportional to the first DC power supply voltage Vccl squared, therefore, possible to drive the resonant circuit of the low voltage Vccl first DC power supply to reduce the driving loss and to obtain higher voltage drive signal.

[0061]在图4b中,一组次级绕组Ls与可调电容电路并联,该组次级绕组Ls不是用来输出驱动信号的,其余的两组次级绕组Ls以及初级绕组Lp均可用来输出驱动信号,因此,这三组绕组中的每组绕组中除接地的接线端以外的接线端通过第二直流电源电路41连接电源转换电路中的一个不同的功率开关管的控制端,即向功率开关管的控制端输出驱动信号,从而在该接线端与功率开关管的控制端之间串联直流电压,这样可以在不提高第一直流电源Vccl的电压的情况下提高各个次级绕组输出的驱动电压,由于驱动损耗与第一直流电源Vccl的电压的平方成正比,因此,可以用较低的第一直流电源Vccl的电压来驱动谐振驱动电路,以降低驱动损耗,并获得较高的驱动信号的电压。 [0061] In Figure 4b, the secondary winding Ls in parallel with the variable capacitance circuit set, the set of secondary winding Ls is not used to output the drive signal, the remaining two sets of the secondary winding Ls, and the primary winding Lp may be used to outputs a drive signal, therefore, the three windings each set of windings in addition to the ground terminal of the terminal end by a different power control switch is connected to the second power conversion circuit 41 in the DC power circuit, namely a driving signal output control terminal of the power switch, such that the series between DC voltage terminal and the control terminal of the power switch tube, so that each of the secondary winding can be increased without increasing the output voltage of the first DC power supply Vccl drive voltage, the drive loss is proportional to the square of the first DC power supply voltage Vccl is, therefore, possible to drive the resonant circuit of the first DC power supply voltage Vccl lower to reduce the driving loss and to obtain a more a high voltage of the drive signal. 其中,初级绕组LP的两端均不接地, 因此,初级绕组Lp的两个接线端都可以通过第二直流电源电路41连接功率开关管的控制端,从而向功率开关管输出驱动信号Vg3和驱动信号Vg4。 Wherein, across the primary winding LP is not grounded, therefore, the two terminals of the primary winding Lp are available through the control terminal of the second DC power source circuit 41 is connected to the power switch, the power switch so as to output a drive signal and a drive Vg3 signal Vg4.

[0062]可选地,当用于输出驱动信号的一个绕组所连接的电源转换电路中的功率开关管Qpl不接地时(如图4b中的初级绕组Lp),如图5所示,第二直流电源电路包括第一二极管D1、 第一电阻R1、第二电阻R2、第一电容C5;第一电阻R1与第一电容C5并联后,连接在该绕组的一个接线端与电源转换电路中的一个功率开关管Qp 1的控制端之间,使得该绕组能够通过第二直流电源电路向功率开关管Qpl的输出驱动信号;第一二极管D1的阳极连接该绕组的另一个接线端,第一二极管D1的阴极通过第二电阻R2连接该功率开关管的控制端。 [0062] Alternatively, when the winding of a power conversion circuit for outputting the driving signal are connected in ungrounded power switch Qpl (primary winding Lp in FIG. 4b), shown in Figure 5, the second DC power supply circuit includes a first diode D1, a first resistor R1, second resistor R2, a first capacitor C5; first resistor R1 and capacitor C5 in parallel with the first, connected to a terminal of the winding of the power conversion circuit between the control terminal of a power switch Qp 1, such that the second DC power source through the winding circuit outputs a drive signal to the power switch Qpl; other terminal anode of the first diode D1 is connected to the winding , the cathode of the first diode D1 is connected to the power switch control terminal via a second resistor R2. 即第二直流电源电路是通过二极管整流获得直流电压的。 I.e. the second DC power supply circuit is a DC voltage obtained by rectifying diodes. 在图5中,可以通过改变第一电阻R1和第二电阻R2的阻值的比例关系来调节第二直流电源电路输出的直流电压的大小。 In FIG. 5, it is possible to adjust the size of the DC voltage output from the second DC power supply circuit by varying the ratio between the resistance of the first resistor R1 and second resistor R2.

[0063]可选地,用于输出驱动信号的一个绕组所连接的电源转换电路中的功率开关管Qp2接地时(如图4a中的两个次级绕组Ls,或图4b中输出驱动信号Vg 1、Vg2的两个次级绕组Ls),如图6所示,第二直流电源电路包括第二直流电源Vcc2、第三电阻R3、第四电阻R4、第二电谷C6;第三电阻R3与第二电容ce并联后,连接在该绕组的未接地的接线端与所述电源转换电路中的一个功率开关管QP2的控制端之间,使得该绕组能够通过第二直流电源电路向功率开关管QP2的输出驱动信号;第二直流电源Vcc2通过第四电阻R4连接该功率开关管Qp2 的控制端。 [0063] Alternatively, when the power switch Qp2 ground power supply switching circuit for outputting a drive signal winding are connected (as shown in the two secondary windings Ls 4a, or 4b outputs a drive signal Vg FIG. two secondary windings Ls 1, Vg2) is shown in Figure 6, the second DC power supply circuit comprises a direct current power source Vcc2 is a second, a third resistor R3, a fourth resistor R4, a second electrical valley C6; a third resistor R3 ce and the second capacitor in parallel, is connected between the ungrounded terminal of the winding and the control terminal of a power switch of the power converter and QP2 circuit, so that the winding can be via the power switch to the second DC power supply circuit a driving signal output pipe and QP2; Vcc2 will be connected to the second DC power through the fourth resistor R4 of the switch control terminal Qp2. 即第二直流电源电路直接从第二直流电源VCC2获得。 I.e. the second DC power supply VCC2 circuit directly from the second DC power source. 在图6中,可以通过改变第三电阻R3和第四电阻R4的阻值的比例关系来调节第二直流电源电路输出的直流电压的大小。 In FIG. 6, to adjust the size of the second DC voltage output from the DC power source circuit by changing the resistance ratio between the third resistor R3 and the fourth resistor R4.

[00M]本发明实施例提供的电源系统,包括本发明实施例提供的谐振驱动电路和电源转换电路;所述谐振驱动电路,用于向所述电源转换电路中的各个开关管输出驱动信号;电源转换电路,用于在谐振驱动电路输出的驱动信号的控制下将接收到的电压转换,并输出。 Embodiment [00M] embodiment of the present invention to provide a power supply system, comprising a resonant embodiment of the present invention to provide a driving circuit and a power conversion circuit; said resonant driving circuit for outputting a drive signal to the tubes of the power converter in the respective switching circuit; power conversion circuit for controlling the drive signal at a resonant drive circuit outputs the received voltage conversion, and outputs. [0065]本领域技术人员可以理解附图只是一个优选实施例的示意图,附图中的模块或流程并不一定是实施本发明所必须的。 [0065] Those skilled in the art will be appreciated the drawings are merely schematic diagram of a preferred embodiment, the modules or processes in the accompanying drawings are not necessarily embodiments of the present invention it is necessary.

[0066]本领域技术人员可以理解实施例中的装置中的模块可以按照实施例描述进行分布于实施例的装置中,也可以进行相应变化位于不同于本实施例的一个或多个装置中。 [0066] It will be appreciated to those skilled in the embodiment of the apparatus modules described embodiments may be distributed in accordance with an embodiment of the apparatus of the embodiment may be performed according to the present embodiment which are different from one case or more devices. 上述实施例的模块可以合并为一个模块,也可以进一步拆分成多个子模块。 Modules of the embodiments may be combined into one module, or split into multiple submodules.

[0067]上述本发明实施例序号仅仅为了描述,不代表实施例的优劣。 Embodiment [0067] The present invention No. merely for description, the embodiments do not represent the merits embodiment.

[0068]显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。 [0068] Obviously, those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. 这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。 Thus, if these modifications and variations of the present invention fall within the claims of the invention and the scope of equivalents thereof, the present invention intends to include these modifications and variations.

Claims (12)

1. 一种谐振驱动电路,用于驱动电源转换电路中的开关管,其特征在于,包括开关电路、初级绕组、次级绕组、可调电容电路、检测电路和控制电路: 所述开关电路的输入端连接第一直流电源,所述初级绕组连接在所述开关电路的两个输出端之间;所述初级绕组与所述次级绕组绕在同一磁芯上构成变压器; 若所述电源转换电路中的开关管分别由所述谐振驱动电路中的初级绕组两端的电压信号和所述谐振驱动电路中的次级绕组两端的电压信号驱动,则所述可调电容电路、所述变压器、由所述次级绕组两端的电压信号驱动的所述电源转换电路中的开关管的输入电容、以及由所述初级绕组两端的电压信号驱动的所述电源转换电路中的开关管的输入电容形成谐振回路;若所述电源转换电路中的开关管由所述谐振驱动电路中的次级绕组两端的电压信号驱动,则 A resonant drive circuit for driving the power switch converting circuit, wherein the circuit includes a switch, a primary winding, a secondary winding, an adjustable capacitor circuit, a detection circuit and a control circuit: in said switching circuit an input terminal connected to a first DC power source, the primary winding is connected between two output terminals of said switching circuit; said primary winding and said secondary winding wound on the same magnetic core constituting a transformer; if the power supply conversion circuit switch across the voltage signal, respectively, in the primary winding circuit of the drive voltage signal across the secondary circuit winding and the resonator is driven by the resonant actuator, said adjustable capacitor circuit, the transformer, the input capacitors of the power converter input capacitor circuit driven by the voltage signal across the secondary winding of the switch, and the power conversion circuit is driven by the voltage signal across the primary winding of the switch tube resonant circuit; if the switch power converting circuit in the voltage across the secondary signal driving the resonant circuit driving winding by the 所述可调电容电路、所述变压器、以及由所述次级绕组两端的电压信号驱动的所述电源转换电路中的开关管的输入电容形成谐振回路; 所述检测电路,用于检测谐振驱动电路中的电流或功率; 所述控制电路,用于根据所述检测电路检测到的信号调整所述可调电容电路的电容值,使得所述谐振驱动电路的功耗最小。 The adjustable capacitor circuit, the input capacitance of the transformer, and the power conversion circuit is driven by the voltage signal across the secondary winding of the resonant circuit forming the switch; a detection circuit for detecting a resonance driving circuit current or power; the control circuit for the capacitance value of said variable capacitor circuit to adjust the signal detected according to the detection circuit so as to minimize power consumption of the driving circuit resonance.
2. 如权利要求1所述的谐振驱动电路,其特征在于,所述控制电路具体用于: 根据所述检测电路检测到的信号,调整所述可调电容电路的电容值,使得所述谐振回路中的谐振信号的频率与所述开关电路的控制信号的频率之差的绝对值最小。 2. A resonant drive circuit according to claim 1, wherein said control circuit is configured to: according to a signal detected by the detection circuit, adjusting the capacitance value of the adjustable capacitor circuit, such that the resonant minimum absolute difference between the frequency of the control signal in the resonant circuit the signal frequency of the switching circuit.
3. 如权利要求1所述的谐振驱动电路,其特征在于,若所述开关电路的两个输出端中的一个输出端接地,则所述可调电容电路与所述初级绕组并联;若所述开关电路的两个输出端均不接地,则所述可调电容电路与所述次级绕组并联。 3. The resonant drive circuit according to claim 1, characterized in that, if the two output terminals of the switch circuit to an output end, said adjustable capacitance circuit connected in parallel with the primary winding; if the two output terminals of said switching circuit is not grounded, the adjustable capacitor circuit in parallel with the secondary winding.
4. 如权利要求1所述的谐振驱动电路,其特征在于,所述可调电容电路包括多个开关管和多个电容; 多个电容串/并联后,与至少一个开关管串联,构成一个支路;多个支路并联构成所述可调电容电路。 4. A resonant drive circuit according to claim 1, characterized in that said variable capacitor circuit comprises a plurality of tubes and a plurality of capacitive switches; a plurality of capacitors after the series / parallel, with at least one switch connected in series to form a branches; a plurality of parallel branches constituting the adjustable capacitor circuit.
5. 如权利要求1所述的谐振驱动电路,其特征在于,所述初级绕组和所述次级绕组中用于输出驱动信号的每个绕组中,除用于接地的接线端以外的接线端通过第二直流电源电路连接电源转换电路中的一个不同的开关管的控制端;所述驱动信号用于驱动电源转换电路中的开关管,使得电源转换电路正常工作。 The resonant drive circuit according to claim 1, wherein the primary winding and the secondary winding for each winding output drive signal, in addition to terminals for grounding terminals DC power circuit via a second control terminal of a switch different power conversion circuit; the switch drive signal for driving the power conversion circuit, so that the power conversion circuit is working properly.
6. 如权利要求5所述的谐振驱动电路,其特征在于,用于输出驱动信号的一个绕组所连接的电源转换电路中的开关管不接地,所述第二直流电源电路包括第一二极管、第一电阻、 第二电阻、第一电容; 所述第一电阻与所述第一电容并联后,连接在该绕组的一个接线端与所述电源转换电路中的一个开关管的控制端之间;所述第一二极管的阳极连接该绕组的另一个接线端,所述第一二极管的阴极通过所述第二电阻连接该开关管的控制端。 6. The resonant driving circuit according to claim 5, characterized in that, for winding of a power conversion circuit outputs a drive signal to the connected switch is not grounded, the second DC power supply circuit includes a first diode control terminal of the first resistor and the capacitor in parallel with the first, is connected to one terminal of the winding of the power conversion circuit of a switch; tube, a first resistor, a second resistor, a first capacitor between; the first diode anode connected to the other terminal of the winding, the first diode cathode connected to a control terminal of the switch transistor through the second resistor.
7. 如权利要求5所述的谐振驱动电路,其特征在于,用于输出驱动信号的一个绕组所连接的电源转换电路中的开关管接地,所述第二直流电源电路包括第二直流电源、第三电阻、 第四电阻、第二电容; 所述第三电阻与所述第二电容并联后,连接在该绕组的未接地的接线端与所述电源转换电路中的一个开关管的控制端之间;所述第二直流电源通过所述第四电阻连接该开关管的控制端。 7. The drive circuit 5 resonance claim, wherein the ground switch for a power conversion circuit outputs a drive signal winding being connected to said second DC power source circuit comprises a second DC power supply, control terminal of the third resistor and the capacitor in parallel with the second, grounding terminal not connected to the winding of the power conversion circuit of a switching transistor; a third resistor, a fourth resistor, a second capacitor between; said second direct current power source connected to the control terminal of the switch transistor through the fourth resistor.
8. 如权利要求1所述的谐振驱动电路,其特征在于,所述开关电路采用以下开关拓扑中的任意一种: 正激开关拓扑、全桥开关拓扑、半桥开关拓扑、推挽开关拓扑和有源箝位开关拓扑。 Full-bridge switching topology, the switch half-bridge topology, the push-pull switching topology switch forward topology: a resonant drive circuit as claimed in claim 1, wherein the switching circuit switches employ any of the following topology and active clamp switching topologies.
9. 如权利要求8所述的谐振驱动电路,其特征在于,所述开关电路采用正激开关拓扑或者推挽开关拓扑或者有源箝位开关拓扑,所述可调电容电路与所述初级绕组并联。 9. The resonant driving circuit according to claim 8, wherein said switching circuit using a push-pull or forward topologies switch or switching active clamp topology switching topology, the adjustable capacitor circuit and the primary winding in parallel.
10. 如权利要求8所述的谐振驱动电路,其特征在于,所述开关电路采用全桥开关拓扑或者半桥开关拓扑,所述可调电容电路与所述次级绕组并联。 10. A resonant drive circuit according to claim 8, wherein said switch circuit uses a full-bridge or half-bridge switching topology switching topology, the variable capacitance circuit connected in parallel with the secondary winding.
11. 如权利要求8所述的谐振驱动电路,其特征在于,所述开关电路采用正激开关拓扑或有源箝位开关拓扑时,所述谐振驱动电路还包括箝位电路,所述箝位电路连接在所述初级绕组所在的回路中; 所述箝位电路,用于将所述谐振驱动电路输出的信号的电压箝位至不大于预设电压。 11. The resonant drive circuit according to claim 8, wherein said switch circuit uses forward topology and active clamp switch switching topology, the resonant circuit further comprises a driver clamp circuit, the clamp circuit connected to the primary winding circuit is located; said clamp circuit for clamping the voltage of the signal output from the resonant circuit is driven to not more than the predetermined voltage.
12. —种电源系统,其特征在于,包括电源换转电路和如权利要求1〜11任一所述的谐振驱动电路; 所述谐振驱动电路,用于向所述电源转换电路中的各个开关管输出驱动信号; 所述电源转换电路,用于在所述谐振驱动电路输出的驱动信号的控制下将接收到的电压转换,并输出。 12. - kind of power supply system, characterized in that the transducer comprises a power switch circuit as claimed in claim resonator and a driving circuit according to any one of 1~11; driving said resonant circuit for each switching power converter to the circuit tube output drive signal; a power conversion circuit for controlling the driving signal at the resonant drive circuit outputs the received voltage conversion, and outputs.
CN201410462700.2A 2014-09-11 2014-09-11 A resonant circuit and a driving power supply system CN105471222B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1768467A (en) * 2003-02-04 2006-05-03 通达商业集团国际公司 Adaptive inductive power supply
CN101297465A (en) * 2005-10-25 2008-10-29 皇家飞利浦电子股份有限公司 Power converter
CN101515757A (en) * 2007-12-18 2009-08-26 Abb研究有限公司 Controller circuit and system having such a controller circuit
US7602154B2 (en) * 2007-05-16 2009-10-13 Virginia Tech Intellectual Properties, Inc. Phase compensation driving scheme for synchronous rectifiers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1768467A (en) * 2003-02-04 2006-05-03 通达商业集团国际公司 Adaptive inductive power supply
CN101297465A (en) * 2005-10-25 2008-10-29 皇家飞利浦电子股份有限公司 Power converter
US7602154B2 (en) * 2007-05-16 2009-10-13 Virginia Tech Intellectual Properties, Inc. Phase compensation driving scheme for synchronous rectifiers
CN101515757A (en) * 2007-12-18 2009-08-26 Abb研究有限公司 Controller circuit and system having such a controller circuit

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