WO2019128185A1 - 谐振电源及电子设备 - Google Patents

谐振电源及电子设备 Download PDF

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Publication number
WO2019128185A1
WO2019128185A1 PCT/CN2018/095021 CN2018095021W WO2019128185A1 WO 2019128185 A1 WO2019128185 A1 WO 2019128185A1 CN 2018095021 W CN2018095021 W CN 2018095021W WO 2019128185 A1 WO2019128185 A1 WO 2019128185A1
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Prior art keywords
module
power
power supply
voltage
output
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Application number
PCT/CN2018/095021
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English (en)
French (fr)
Inventor
李锦乐
刘建军
郑焕伟
Original Assignee
深圳Tcl新技术有限公司
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Publication of WO2019128185A1 publication Critical patent/WO2019128185A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—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
    • H02M3/33569—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 having several active switching elements
    • H02M3/33571—Half-bridge at primary side of an isolation transformer
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters
    • 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
    • H02M3/01—Resonant DC/DC converters
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
    • 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

Definitions

  • the present application relates to the field of power supply technologies, and in particular, to a resonant power supply and an electronic device.
  • Electronic equipment usually contains a variety of electrical loads, and each electrical load has different requirements for the power supply. Therefore, each electrical load requires an independent power supply for power supply, which results in high power supply cost.
  • the conventional power supply has only one feedback loop to feed back the output voltage or current, and can only output one or more associated voltages. For the output of multiple associated voltages, the output voltages of each channel cannot be independently regulated. When the output voltage of a certain channel is regulated, the output voltage of other channels will be affected, which affects the reliability of the power supply.
  • the main purpose of the present application is to provide a resonant power supply, which aims to realize a multi-channel and independently adjustable power supply voltage of a single power supply output, reduce power supply costs, and improve power supply reliability.
  • the present application provides a resonant power supply including a power input terminal, a drive control module, a first switch module, a second switch module, a resonance conversion module, a first power output module, and a second power output module. a first feedback module, a second feedback module, a first power output terminal, and a second power output terminal;
  • the driving control module is configured to detect a square wave signal, and drive the first switch module or the second switch module to be turned on according to a high and low state of the square wave signal; the resonant transform module is set to be in the first a first induced voltage is generated when a switch module is turned on, and a second induced voltage is generated when the second switch module is turned on; the first power output module is configured to convert the first induced voltage into a first power supply voltage of a direct current And outputting to the first power output terminal; the second power output module is configured to convert the second induced voltage into a second power supply voltage of the direct current and output to the second power output end;
  • the feedback module is configured to detect the first power voltage and feed back a first detection signal to the driving control module to correct the first power voltage; the second feedback module is configured to detect the second power voltage, And feeding back a second detection signal to the driving control module to correct the second power voltage;
  • the square wave signal detecting end of the driving control module is connected to the power input terminal via the first switching module, and is connected to the primary ground via the second switching module, and the first driving output end of the driving control module Connected to the controlled end of the first switch module, the second drive output of the drive control module is coupled to the controlled end of the second switch module;
  • the primary side of the resonant converter module is via the first a switch module is connected to the power input end, and is connected to the primary ground via the second switch module, a secondary side of the resonant conversion module and an input end of the first power output module and the second power supply respectively
  • An input end of the output module is connected; an output end of the first power output module is connected to the first power output end, and an output end of the second power output module is connected to the second power output end;
  • An input end of a feedback module is connected to the first power output end, and an output end of the first feedback module is connected to a first voltage feedback end of the drive control module; the second feedback mode Input terminal and the
  • the driving control module comprises a driving controller, a first PWM power controller and a second PWM power controller; the driving controller is configured to detect a square wave signal according to a high and low state of the square wave signal Controlling the first PWM power controller to drive the first switch module to be turned on, or controlling the second PWM power controller to drive the second switch module to be turned on;
  • the square wave signal detecting end of the driving controller is connected to the power input terminal via the first switching module, and is connected to the primary ground via the second switching module, and the first control output of the driving controller
  • the terminal is connected to the controlled end of the first PWM power controller, and the second control output of the drive controller is connected to the controlled end of the second PWM power controller;
  • the driving of the first PWM power controller The output end is connected to the controlled end of the first switch module, and the drive output end of the second PWM power supply controller is connected to the controlled end of the second switch module.
  • the first switch module includes a first MOS transistor
  • the second switch module includes a second MOS transistor
  • a gate of the first MOS transistor is connected to a first driving output end of the driving control module, a drain of the first MOS transistor is connected to the power input end, and a source of the first MOS transistor is a primary side of the resonant conversion module is connected, and is connected to a square wave signal detecting end of the driving control module;
  • a gate of the second MOS transistor is connected to a second driving output end of the driving control module, a drain of the second MOS transistor is connected to a primary side of the resonant conversion module, and the driving control module
  • the square wave signal detecting end is connected, and the source of the second MOS tube is connected to the primary ground.
  • the resonance conversion module includes a transformer and a first capacitor;
  • the transformer includes a primary coil, a first secondary coil, and a second secondary coil;
  • the same-name end of the primary coil is connected to the power input terminal via the first switch module, and is connected to the primary ground via the second switch module, the different-name end of the primary coil and the first capacitor Positive pole connected, the negative pole of the first capacitor is connected to the primary ground;
  • the same-name end of the first secondary coil is connected to the input end of the first power output module, the different name of the first secondary coil is connected to the secondary ground; and the second secondary coil is synonymous The end is connected to the input end of the second power output module, and the same name of the second secondary coil is connected to the secondary ground.
  • the first power output module includes a first diode and a second capacitor
  • the anode of the first diode is connected to the same end of the first secondary coil, the cathode of the first diode is connected to the anode of the second capacitor, and the first power output is Connected, the negative pole of the second capacitor is connected to the secondary ground.
  • the second power output module includes a second diode and a third capacitor
  • An anode of the second diode is connected to a different end of the second secondary coil, a cathode of the second diode is connected to an anode of the third capacitor, and the second power output is The terminal is connected, and the cathode of the third capacitor is connected to the secondary ground.
  • the first feedback module includes a current sampling resistor, a first error amplifier and a first photocoupler;
  • the first end of the current sampling resistor is configured to be connected to the first power output through an electrical load powered by the first supply voltage, the second end of the current sampling resistor being connected to the secondary ground;
  • An input end of the first error amplifier is connected to a first end of the current sampling resistor, and an output end of the first error amplifier is connected to a cathode of a light emitting diode in the first photocoupler; in the first photocoupler An anode of the light emitting diode is connected to the second power output end, and a collector of the phototransistor is connected to a first voltage feedback end of the driving control module, and the first photocoupler is electrically connected
  • the emitter of the triode is connected to the primary ground.
  • the second feedback module includes a second error amplifier and a second photocoupler
  • An input end of the second error amplifier is connected to the second power output end, and an output end of the second error amplifier is connected to a cathode of the light emitting diode in the second photocoupler; the second photocoupler An anode of the middle light emitting diode is connected to the second power output end, and a collector of the phototransistor is connected to a second voltage feedback end of the driving control module in the second photocoupler, in the first photocoupler
  • the emitter of the phototransistor is connected to the primary ground via the primary side of the resonant converter module.
  • the power input terminal is connected to the primary ground via a fourth capacitor.
  • the application further provides an electronic device including a resonant power source including a power input terminal, a drive control module, a first switch module, a second switch module, a resonance conversion module, a first power output module, and a second a power output module, a first feedback module, a second feedback module, a first power output terminal, and a second power output terminal;
  • a resonant power source including a power input terminal, a drive control module, a first switch module, a second switch module, a resonance conversion module, a first power output module, and a second a power output module, a first feedback module, a second feedback module, a first power output terminal, and a second power output terminal;
  • the driving control module is configured to detect a square wave signal, and drive the first switch module or the second switch module to be turned on according to a high and low state of the square wave signal; the resonant transform module is set to be in the first a first induced voltage is generated when a switch module is turned on, and a second induced voltage is generated when the second switch module is turned on; the first power output module is configured to convert the first induced voltage into a first power supply voltage of a direct current And outputting to the first power output terminal; the second power output module is configured to convert the second induced voltage into a second power supply voltage of the direct current and output to the second power output end;
  • the feedback module is configured to detect the first power voltage and feed back a first detection signal to the driving control module to correct the first power voltage; the second feedback module is configured to detect the second power voltage, And feeding back a second detection signal to the driving control module to correct the second power voltage;
  • the square wave signal detecting end of the driving control module is connected to the power input terminal via the first switching module, and is connected to the primary ground via the second switching module, and the first driving output end of the driving control module Connected to the controlled end of the first switch module, the second drive output of the drive control module is coupled to the controlled end of the second switch module;
  • the primary side of the resonant converter module is via the first a switch module is connected to the power input end, and is connected to the primary ground via the second switch module, a secondary side of the resonant conversion module and an input end of the first power output module and the second power supply respectively
  • An input end of the output module is connected; an output end of the first power output module is connected to the first power output end, and an output end of the second power output module is connected to the second power output end;
  • An input end of a feedback module is connected to the first power output end, and an output end of the first feedback module is connected to a first voltage feedback end of the drive control module; the second feedback mode Input terminal and the
  • the resonant power supply provided by the present application drives the first switch module and the second switch module to be turned on at the same time according to the detected high and low state of the square wave signal, and the resonant conversion module generates the first when the first switch module is turned on.
  • the induced voltage generates a second induced voltage when the second switch module is turned on, and the first power output module converts the first induced voltage into a first power supply voltage of the direct current, and outputs the first power supply voltage to the first power output end, and the second power output module
  • the second induced voltage is converted into a second power supply voltage of the direct current and output to the second power output end; and the first feedback module detects the first power supply voltage outputted by the first power output terminal, and feeds back the first detection signal to the drive control module, To correct the first power voltage;
  • the second feedback module detects the second power voltage outputted by the second power output, and feeds back the second detection signal to the drive control module to correct the second power voltage.
  • the present application outputs two different power supply voltages through a resonant power supply and simultaneously supplies power to different power supply requirements, and separately detects and feeds the two power supply voltages separately, and can independently control the two output voltages.
  • the power supply implements the traditional two power functions, reducing the power supply cost and improving the reliability of the power supply.
  • FIG. 1 is a schematic structural diagram of an embodiment of a resonant power supply of the present application
  • FIG. 2 is a schematic diagram of a circuit structure of an alternative embodiment of a resonant power supply of the present application.
  • the application provides a resonant power supply.
  • FIG. 1 is a schematic structural diagram of a resonant power supply according to an embodiment of the present application.
  • the resonant power supply of the present application includes a power input terminal VB, a drive control module 10, a first switch module 20, a second switch module 30, a resonance conversion module 40, and a first power output module. 50.
  • the driving control module 10 is configured to detect a square wave signal, and drive the first switch module 20 or the second switch module 30 to be turned on according to the high and low state of the square wave signal; the resonant transform module 40 is configured to Generating a first induced voltage when the first switch module 20 is turned on, and generating a second induced voltage when the second switch module 30 is turned on; the first power output module 50 converting the first induced voltage to a direct current
  • the first power supply voltage is output to the first power output terminal VOUT1;
  • the second power output module 60 is configured to convert the second induced voltage into a DC second power voltage and output to the second power source
  • the first feedback module 70 is configured to detect the first power supply voltage and feed back a first detection signal to the drive control module 10 to correct the first power voltage; the second feedback module 80 is configured to detect the second power voltage and feed back a second detection signal to the drive control module 10 to correct the second power voltage.
  • the square wave signal detecting end of the driving control module 10 is connected to the power input terminal VB via the first switch module 20, and is connected to the primary ground via the second switch module 30, and the driving control module 10 a first drive output is coupled to the controlled end of the first switch module 20, and a second drive output of the drive control module 10 is coupled to the controlled end of the second switch module 30; the resonant converter module
  • the primary side of the 40 is connected to the power input terminal VB via the first switch module 20, and is connected to the primary ground via the second switch module 30, and the secondary side of the resonant conversion module 40 is respectively associated with the first
  • An input end of a power output module 50 is connected to an input end of the second power output module 60; an output end of the first power output module 50 is connected to the first power output terminal VOUT1, and the second power output is An output end of the module 60 is connected to the second power output terminal VOUT2; an input end of the first feedback module 70 is connected to the first power output terminal VOUT1, and an output end of the first feedback module 70 is
  • the driving control module 10 detects a one-wave signal. When the square wave signal is at a low level, the driving control module 10 drives the first switching module 20 to be turned on. When the square wave signal is at a high level, the driving control module is driven. 10 drives the second switch module 30 to be turned on. When the first switch module 20 is turned on, the power input terminal VB, the first switch module 20 and the resonance conversion module 40 form a charging circuit, and the input voltage of the power input terminal VB is charged to the primary side of the resonance conversion module 40 through the first switch module 20.
  • the resonance conversion module 40 generates a first induced voltage on the secondary side; the first power output module 50 performs AC-to-DC processing on the first induced voltage generated by the resonant conversion module 40, and converts the first induced voltage of the alternating current into The first power supply voltage of the direct current is output to the first power supply output terminal VOUT1, and the first power supply voltage is output to the power load powered by the first power supply voltage through the first power supply output terminal VOUT1.
  • the second switch module 30 is turned on, the primary side of the resonance conversion module 40 and the second switch module 30 form a discharge loop, and the primary side of the resonance conversion module 40 is discharged. At this time, the resonance conversion module 40 generates a second induced voltage on the secondary side.
  • the second power output module 60 performs AC to DC processing on the second induced voltage generated by the resonant converter module 40, and converts the second induced voltage of the alternating current into a second power supply voltage of the direct current to the second power output terminal VOUT2.
  • the second power supply output terminal VOUT2 outputs a second power supply voltage to supply power to the electrical load that is powered by the second power supply voltage.
  • the first feedback module 70 detects the first power supply voltage outputted by the first power output terminal VOUT1.
  • the first feedback module 70 flows through the first power supply voltage when the first power supply voltage is supplied to the corresponding power load. The current of the electric load is sampled and the corresponding sampling voltage is obtained.
  • the first feedback module 70 outputs the first feedback signal to the driving control module 10, and controls the driving control module 10
  • the turn-on time of the two switch modules 30 is reduced, and the turn-on time of the first switch module 20 is maintained.
  • the turn-on time of the first switch module 20 is constant, the turn-on time of the second switch module 30 is reduced, so that the first induced voltage generated by the resonant converter module 40 when the first switch module 20 is turned on is lowered, so that the first power source is passed.
  • the first power supply voltage of the DC output after the processing of the output module 50 is lowered, so that the first power supply voltage outputted through the first power supply output terminal VOUT1 is corrected, that is, the current flowing through the power supply load supplied by the first power supply voltage is obtained. Correcting, so that the first power supply voltage outputted by the first power output terminal VOUT1 is stabilized, achieves independent regulation of the output voltage of the first power output terminal VOUT1.
  • the second feedback module 80 detects the second power voltage outputted by the second power output terminal VOUT2.
  • the second feedback module 80 samples the second power voltage output by the second power output terminal VOUT2, and the second feedback module
  • the second feedback signal is output to the driving control module 10 and the driving time of the first switching module 20 is controlled to be reduced by the driving control module 10, and the second switching module 30 is maintained.
  • the opening time is unchanged. Since the turn-on time of the first switch module 20 is reduced, the turn-on time of the second switch module 30 is unchanged, so that the second induced voltage generated by the resonant converter module 40 when the second switch module 30 is turned on is lowered, so that the second power source is passed.
  • the second power supply voltage outputted by the processing of the output module 60 is reduced, so that the second power supply voltage outputted by the second power supply output terminal VOUT2 is corrected, so that the second power supply voltage outputted by the second power supply output terminal VOUT2 is stabilized, and the Independent regulation of the output voltage of the two power supply terminals VOUT2.
  • the resonant power supply of the present application drives the first switching module 20 and the second switching module 30 to be turned on at the same time according to the detected high and low state of the square wave signal by the driving control module 10, and the resonant conversion module 40 is first.
  • the switch module 20 is turned on, a first induced voltage is generated
  • the second switch module 30 is turned on, a second induced voltage is generated
  • the first power output module 50 converts the first induced voltage into a DC first power voltage and outputs the first power to the first power source.
  • the output terminal VOUT1 the second power output module 60 converts the second induced voltage into a second power supply voltage of the direct current and outputs the second power supply voltage to the second power output terminal VOUT2; and the first feedback module 70 detects the output of the first power output terminal VOUT1. a power supply voltage, and feedback the first detection signal to the drive control module 10 to correct the first power supply voltage; the second feedback module 80 detects the second power supply voltage outputted by the second power supply output terminal VOUT2, and feeds back the second detection signal to the drive The module 10 is controlled to correct the second power voltage.
  • the present invention outputs two different power supply voltages through a resonant power supply and simultaneously supplies power to different power supply requirements. Moreover, the two power supply voltages are separately detected and fed back, and the two output voltages can be independently regulated. The traditional two power functions are realized, the power supply cost is reduced, the power conversion efficiency is improved, and the reliability of the power supply is also improved.
  • FIG. 2 is a schematic structural diagram of a circuit of an alternative embodiment of the resonant power supply of the present application.
  • the drive control module 10 includes a drive controller U1, a first PWM power controller U2, and a second PWM power controller U3; the drive controller U1 is configured to detect a square wave signal according to the square wave The high and low state of the signal controls the first PWM power controller U2 to drive the first switch module 20 to turn on, or to control the second PWM power controller U3 to drive the second switch module 30 to turn on.
  • the square wave signal detecting terminal Vi of the driving controller U1 is connected to the power input terminal VB via the first switching module 20, and is connected to the primary ground via the second switching module 30, the driving controller
  • the first control output terminal Vo1 of U1 is connected to the controlled terminal Con1 of the first PWM power supply controller U2, and the second control output terminal Vo2 of the drive controller U1 and the controlled end of the second PWM power supply controller U3 a driving output terminal Dr1 of the first PWM power controller U2 is connected to a controlled end of the first switching module 20, and a driving output terminal Dr2 of the second PWM power controller U3 is connected to the second The controlled end of the switch module 30 is connected.
  • the first switch module 20 includes a first MOS transistor Q1
  • the second switch module 30 includes a second MOS transistor Q2.
  • the first MOS transistor Q1 and the second MOS transistor Q2 are both NMOS transistors.
  • the first MOS transistor Q1 and the second MOS transistor Q2 may be replaced by PMOS transistors. limit.
  • the gate of the first MOS transistor Q1 is connected to the first driving output end of the driving control module 10, as shown in FIG. 2, the gate of the first MOS transistor Q1 and the driving output end of the first PWM power controller U2.
  • Dr1 is connected, a drain of the first MOS transistor Q1 is connected to the power input terminal VB, a source of the first MOS transistor Q1 is connected to a primary side of the resonance conversion module 40, and a first MOS transistor Q1 is connected.
  • the source is connected to the square wave signal detecting end of the drive control module 10. As shown in FIG. 2, the source of the first MOS transistor Q1 is connected to the square wave signal detecting end Vi of the drive controller U1.
  • the gate of the second MOS transistor Q2 is connected to the second driving output end of the driving control module 10, as shown in FIG. 2, the gate of the second MOS transistor Q2 and the driving output end of the second PWM power controller U3.
  • Dr2 is connected, the drain of the second MOS transistor Q2 is connected to the primary side of the resonant converter module 40, and the drain of the second MOS transistor Q2 is connected to the square wave signal detecting end of the drive control module 10, such as In FIG. 2, the drain of the second MOS transistor Q2 is connected to the square wave signal detecting terminal Vi of the drive controller U1, and the source of the second MOS transistor Q2 is connected to the primary ground.
  • the resonance conversion module 40 includes a transformer T1 and a first capacitor C1; the transformer T1 includes a primary coil N1, a first secondary winding N2, and a second secondary winding N3.
  • the same name end of the primary winding N1 is connected to the power input terminal VB via the first switch module 20, and is connected to the primary ground via the second switch module 30, as shown in FIG. 2, the same name end of the primary coil N1 Connected to the source of the first MOS transistor Q1, connected to the power input terminal VB via the first MOS transistor Q1, and the same name end of the primary coil N1 is connected to the drain of the second MOS transistor Q2, via the second MOS transistor Q2 Received the primary ground.
  • the opposite end of the primary winding N1 is connected to the positive pole of the first capacitor C1, and the negative pole of the first capacitor C1 is connected to the primary ground.
  • the same end of the first secondary winding N2 is connected to the input end of the first power output module 50, and the different name of the first secondary winding N2 is connected to the secondary ground; the second secondary coil The alias end of N3 is connected to the input end of the second power output module 60, and the same name of the second secondary coil N3 is connected to the secondary ground.
  • the first power output module 50 includes a first diode D1 and a second capacitor C2.
  • the anode of the first diode D1 is connected to the same end of the first secondary winding N2, the cathode of the first diode D1 is connected to the anode of the second capacitor C2, and the first power source
  • the output terminal VOUT1 is connected, and the cathode of the second capacitor C2 is connected to the secondary ground.
  • the second power output module 60 includes a second diode D2 and a third capacitor C3.
  • the anode of the second diode D2 is connected to the opposite end of the second secondary winding N3, the cathode of the second diode D2 is connected to the anode of the third capacitor C3, and The second power supply output terminal VOUT2 is connected, and the negative electrode of the third capacitor C3 is connected to the secondary ground.
  • the power input terminal VB is connected to the primary ground via the fourth capacitor C4, and the fourth capacitor C4 can filter the input voltage input from the power input terminal VB and store the electrical energy.
  • the first feedback module 70 includes a current sampling resistor RS, a first error amplifier U4, and a first photocoupler U5.
  • the first end of the current sampling resistor RS is configured to be connected to the first power output terminal VOUT1 through an electrical load powered by the first power supply voltage, and the second end of the current sampling resistor RS is connected to the secondary
  • the input end of the first error amplifier U4 is connected to the first end of the current sampling resistor RS, and the output end of the first error amplifier U4 is connected to the cathode of the LED in the first photocoupler U5;
  • the anode of the light emitting diode in the first photocoupler U5 is connected to the second power output terminal VOUT2, the collector of the phototransistor in the first photocoupler U5 and the first voltage feedback end of the drive control module 10 Connected, as shown in FIG. 2, the collector of the phototransistor in the first photocoupler U5 is connected to the voltage feedback terminal FB1 of the second PWM power controller U3, and the emitter of the phototransistor in the first photocoupler U5 is connected Primary ground.
  • the second feedback module 80 includes a second error amplifier U6 and a second photocoupler U7.
  • An input end of the second error amplifier U6 is connected to the second power output terminal VOUT2, and an output end of the second error amplifier U6 is connected to a cathode of the LED in the second photocoupler U7;
  • the anode of the light-emitting diode in the second photocoupler U7 is connected to the second power output terminal VOUT2, and the collector of the phototransistor in the second photocoupler U7 is connected to the second voltage feedback end of the drive control module 10, As shown in FIG.
  • the collector of the phototransistor in the second photocoupler U7 is connected to the voltage feedback terminal FB2 of the first PWM power controller U2, and the emitter of the phototransistor in the first photocoupler U5 is via the resonance
  • the primary side of the conversion module 40 is connected to the primary ground.
  • the emitter of the phototransistor in the first photocoupler U5 is connected to the primary ground via the primary winding N1 of the transformer T1 and the first capacitor C1.
  • a square wave signal is input at point A in Fig. 2 .
  • the drive controller U1 in the drive control module 10 detects the high and low state of the square wave signal at point A through its square wave signal detection terminal Vi, according to the level of the square wave signal at point A.
  • the level state control first PWM power controller U2 drives the first MOS transistor Q1 to be turned on, or controls the second PWM power controller U3 to drive the second MOS transistor Q2 to be turned on, so that the first MOS transistor Q1 and the second MOS transistor Q2 Not at the same time.
  • the second PWM power controller U3 is controlled to drive the second MOS transistor Q2 to be turned on; when the driving controller U1 detects that the point A is high.
  • the first PWM power controller U2 is controlled to drive the first MOS transistor Q1 to be turned on as an example for specific description:
  • the drive controller U1 When the drive controller U1 detects a low level signal at point A, the drive controller U1 outputs a first control signal to the controlled end Con1 of the first PWM power supply controller U2 through its first control output terminal Vo1, and simultaneously passes Its second control output Vo2 outputs a second control signal to the controlled end Con2 of the second PWM power controller U3.
  • the second PWM power controller U3 After the second PWM power controller U3 detects the second control signal outputted by the driving controller U1, the second PWM power controller U3 outputs a driving signal of a high level to the gate of the second MOS transistor Q2 through its driving output terminal Dr2.
  • the second MOS transistor Q2 is turned on; at the same time, after the first PWM power controller U2 detects the first control signal output by the driving controller U1, the first PWM power controller U2 outputs a low level through its driving output terminal Dr1.
  • the driving signal is to the gate of the first MOS transistor Q1 such that the first MOS transistor Q1 is in an off state.
  • a discharge circuit is formed from the first capacitor C1, the primary winding N1 of the transformer T1, and the second MOS transistor Q2 to the primary, and the first capacitor C1 passes through the primary winding N1 of the transformer T1 and the second MOS.
  • the tube Q2 is discharged, at which time the current flowing through the primary winding N1 of the transformer T1 flows from the opposite end of the primary winding N1 to the same-named end of the primary winding N1.
  • a corresponding induced voltage is generated on both the first secondary winding N2 and the second secondary winding N3 of the transformer T1, and the current flowing through the first secondary winding N2 of the transformer T1 is also from the first secondary winding.
  • the different end of N2 flows to the same end of the first secondary winding N2, and the current flowing through the second secondary winding N3 of the transformer T1 also flows from the different end of the second secondary winding N3 to the second secondary winding N3.
  • the same name end whereby the induced voltage generated by the first secondary winding N2 adds a negative voltage to the anode of the first diode D1, so that the first diode D1 is turned off, and the induced voltage generated by the second secondary winding N3 A forward voltage is applied to the anode of the second diode D2 such that the second diode D2 is turned on.
  • the second diode D2 rectifies the AC induced voltage generated by the second secondary winding N3 of the transformer T1 and converts it into a DC voltage, and the third capacitor C3 filters the DC voltage. And outputting the filtered DC voltage, that is, the second power supply voltage, to the second power output terminal VOUT2. Thereby, the second power supply voltage can be output through the second power supply output terminal VOUT2 to supply power to the electrical load powered by the second power supply voltage.
  • the driving signal outputted by the driving output terminal Dr2 of the second PWM power controller U3 is a PWM signal
  • the second PWM power controller U3 outputs a driving signal of a high level to drive the second MOS transistor Q2 to conduct for a period of time
  • the driving signal outputted by the second PWM power controller U3 will become a low level, and the second MOS transistor Q2 is controlled to be turned off.
  • a current flows in the primary winding N1 of the transformer T1, and the current flowing through the primary winding N1 of the transformer T1 flows from the different end of the primary winding N1 to the primary winding.
  • the same name end of N1 and since the primary winding N1 of the transformer T1 is an inductance element, the inductance has a characteristic that the current cannot be abruptly changed, so that the primary winding N1 of the transformer T1 is also present when the second MOS transistor Q2 is turned on to off.
  • the current flows and the current direction does not change.
  • the current in the primary winding N1 of the transformer T1 flows from the primary winding N1, point A, the first MOS transistor Q1 to the power supply input terminal VB.
  • the square wave signal at point A changes from low level to high level. Therefore, the square wave signal input to the square wave signal detecting terminal Vi of the driving controller U1 is at a high level at this time, and after the driving controller U1 detects the high level signal, the driving controller U1 passes through the first control output thereof.
  • Vo1 outputs a first control signal to the controlled end Con1 of the first PWM power controller U2, while at the same time outputs a second control signal to the controlled end Con2 of the second PWM power controller U3 through its second control output Vo2.
  • the first PWM power controller U2 After the first PWM power controller U2 detects the first control signal output by the driving controller U1, the first PWM power controller U2 outputs a driving signal of a high level to the gate of the first MOS transistor Q1 through its driving output terminal Dr2. , the first MOS transistor Q1 is turned on; meanwhile, after the second PWM power controller U3 detects the second control signal output by the driving controller U1, the second PWM power controller U3 outputs a low level through the driving output terminal Dr2.
  • the driving signal is to the gate of the second MOS transistor Q2, so that the second MOS transistor Q2 is turned off.
  • a charging circuit is formed from the power input terminal VB, the first MOS transistor Q1, the primary winding N1 of the transformer T1, and the first capacitor C1 to the primary, and the input voltage input from the power input terminal VB passes through the first A MOS transistor Q1, a primary winding N1 of the transformer T1 charges the first capacitor C1, and the current flowing through the primary winding N1 of the transformer T1 flows from the same-name end of the primary winding N1 to the different-named end of the primary winding N1.
  • a corresponding induced voltage is generated on both the first secondary winding N2 and the second secondary winding N3 of the transformer T1, and the current flowing through the first secondary winding N2 of the transformer T1 is also from the first secondary winding.
  • the same-name end of N2 flows to the different end of the first secondary winding N2, and the current flowing through the second secondary winding N3 of the transformer T1 also flows from the same-name end of the second secondary winding N3 to the second secondary winding N3.
  • the induced voltage generated by the first secondary winding N2 applies a forward voltage to the anode of the first diode D1, so that the first diode D1 is turned on, and the induced voltage generated by the second secondary winding N3 A negative voltage is applied to the anode of the second diode D2 such that the second diode D2 is turned off.
  • the first diode D1 rectifies the AC induced voltage generated by the first secondary winding N2 of the transformer T1 and converts it into a DC voltage, and the second capacitor C2 filters the DC voltage. And outputting the filtered DC voltage, that is, the first power supply voltage, to the first power output terminal VOUT1. Thereby, the first power supply voltage can be output through the first power supply output terminal VOUT1 to supply power to the electrical load powered by the first power supply voltage.
  • the first PWM power controller U2 since the driving signal outputted by the driving output terminal Dr1 of the first PWM power controller U2 is also a PWM signal, the first PWM power controller U2 outputs a driving signal of a high level to drive the first MOS transistor Q1 to conduct a section. After the time, the driving signal outputted by the first PWM power controller U2 will become a low level, and the first MOS transistor Q1 is controlled to be turned off. In this way, the resonant power supply enters the next duty cycle, and the above working principle is repeated, and details are not described herein again.
  • the current sampling resistor RS samples the current of the electric load, and forms a sampling voltage on the current sampling resistor RS, and the sampling voltage is input to the input end of the first error amplifier U4.
  • the first error amplifier U4 detects that the sampling voltage is higher than the preset sampling voltage, that is, the current flowing through the power load is higher than the preset current, the first error amplifier U4 turns the cathode of the light emitting diode in the first photocoupler U5.
  • the voltage is pulled low, so that the current in the first photocoupler U5 is increased, and the collector voltage of the phototransistor in the first photocoupler U5 is also pulled low, that is, fed back to the voltage feedback terminal FB1 of the second PWM power controller U3.
  • the voltage of the second PWM power controller U3 is reduced to a high level in the driving signal of the second MOS transistor Q2, that is, the driving signal outputted by the driving output terminal Dr2 of the second PWM power controller U3.
  • the duty ratio is reduced, so that the on-time of the second MOS transistor Q2 is shortened.
  • the voltage at point A is a square wave signal, and the on-time of the second MOS transistor Q2 becomes shorter, and the on-time of the first MOS transistor Q1 does not change, that is, the time of the low level of the prescription wave signal at point A becomes shorter.
  • the charging voltage charged by the first capacitor C1 becomes small, so that the voltage applied to the primary winding N1 of the transformer T1 is lowered, correspondingly The induced voltage generated on the first secondary winding N2 of the transformer T1 is lowered, and the induced voltage is rectified by the first diode D1, and the filtered first output voltage of the second capacitor C2 is lowered, thereby making the first
  • the first power supply voltage outputted by the power output terminal VOUT1 is lowered, and the second power supply voltage outputted by the first power output terminal VOUT1 is corrected, that is, the current flowing through the power load is reduced, and the current in the power load is corrected, thereby realizing
  • the output voltage of the first power output terminal VOUT1 is independently regulated.
  • the second error amplifier U6 when the second error amplifier U6 detects that the second power voltage outputted by the second power output terminal is higher than the preset voltage, the second error amplifier U6 sets the second photocoupler.
  • the cathode voltage of the light-emitting diode in U7 is pulled low, so that the current in the second photocoupler U7 is increased, and the collector voltage of the phototransistor in the second photocoupler U7 is also pulled low, that is, fed back to the first PWM power controller.
  • the voltage of the voltage feedback terminal FB2 of U2 is lowered.
  • the time taken by the high level of the first PWM power controller U2 to the driving signal of the first MOS transistor Q1 is reduced, that is, the driving signal output by the first PWM power controller U2.
  • the duty ratio is reduced, so that the on-time of the first MOS transistor Q1 becomes shorter. Since the voltage at point A is a square wave signal, and the on-time of the first MOS transistor Q1 becomes shorter, and the on-time of the second MOS transistor Q2 does not change, that is, the time at which the high level of the prescription wave signal at point A becomes shorter The time occupied by the low level is constant, so the duty ratio of the prescription wave signal at point A is reduced.
  • the average voltage on the first capacitor C1 is lowered. Therefore, after the first MOS transistor Q1 is turned off, when the second MOS transistor Q2 is turned on, the discharge voltage of the first capacitor C1 is reduced, so that the voltage applied to the primary winding N1 of the transformer T1 is lowered, correspondingly The induced voltage generated on the second secondary winding N3 of the transformer T1 is lowered, and the induced voltage is rectified by the second diode D2, and the filtered second output voltage of the third capacitor C3 is lowered, thereby making the first The second power supply voltage outputted by the second power supply output terminal VOUT2 is lowered, and the second power supply voltage outputted by the second power supply output terminal VOUT2 is corrected, so that the output voltage of the second power supply output terminal VOUT2 is independently regulated.
  • the present application further provides an electronic device including a resonant power supply.
  • the structure, working principle, and effectiveness of the resonant power supply are all referred to the above embodiments, and are not described herein again.
  • the electronic device of the present application may be an LED-backlit television set, and the first power supply voltage and the second power supply voltage outputted by the resonant power supply respectively supply power to the LED backlight strip and the television core, and the LED-backlit television passes A single resonant power supply provides two different supply voltages to drive the backlight and the movement separately.

Abstract

一种谐振电源及电子设备，其中该谐振电源包括电源输入端（VB）、驱动控制模块（10）、第一开关模块（20）、第二开关模块（30）、谐振变换模块（40）、第一电源输出模块（50）、第二电源输出模块（60）、第一反馈模块（70）、第二反馈模块（80）、第一电源输出端（VOUT1）和第二电源输出端（VOUT2）。驱动控制模块（10）驱动第一开关模块（20）或第二开关模块（30）开通，谐振变换模块（40）对应产生第一感应电压、第二感应电压，第一电源输出模块（50）、第二电源输出模块（60）分别将第一感应电压、第二感应电压转换为直流的第一电源电压和第二电源电压；第一反馈模块（70）、第二反馈模块（80）分别对第一电源电压、第二电源电压进行检测和反馈以校正第一电源电压和第二电源电压。

Description

谐振电源及电子设备
技术领域
本申请涉及电源技术领域，尤其涉及一种谐振电源及电子设备。
背景技术
电子设备通常包含多种用电负载，且各用电负载对供电电源有不同的要求，因此，各用电负载需要独立的供电电源进行供电，这导致供电电源成本高。而且，传统电源只有一个反馈环路对输出电压或电流进行反馈，只能输出一路或多路相关联的电压，对于输出多路相关联的电压的情况，各路输出电压不能进行独立调控，当对某一路输出电压进行调控时必然会影响到其它路的输出电压，影响电源的可靠性。
发明内容
本申请的主要目的在于提供一种谐振电源，旨在实现单个电源输出多路不同且可独立调控的电源电压，降低电源成本，提高电源可靠性。
为了达到上述目的，本申请提供一种谐振电源，该谐振电源包括电源输入端、驱动控制模块、第一开关模块、第二开关模块、谐振变换模块、第一电源输出模块、第二电源输出模块、第一反馈模块、第二反馈模块、第一电源输出端和第二电源输出端；
所述驱动控制模块设置为检测一方波信号，根据所述方波信号的高低电平状态驱动所述第一开关模块或所述第二开关模块开通；所述谐振变换模块设置为在所述第一开关模块开通时产生第一感应电压，在所述第二开关模块开通时产生第二感应电压；所述第一电源输出模块设置为将所述第一感应电压转换为直流的第一电源电压后输出至所述第一电源输出端；所述第二电源输出模块设置为将所述第二感应电压转换为直流的第二电源电压后输出至所述第二电源输出端；所述第一反馈模块设置为检测所述第一电源电压，并反馈第一检测信号给所述驱动控制模块，以校正所述第一电源电压；所述第二反馈模块设置为检测所述第二电源电压，并反馈第二检测信号给所述驱动控制模块，以校正所述第二电源电压；
所述驱动控制模块的方波信号检测端经由所述第一开关模块与所述电源输入端连接，且经由所述第二开关模块接到初级地，所述驱动控制模块的第一驱动输出端与所述第一开关模块的受控端连接，所述驱动控制模块的第二驱动输出端与所述第二开关模块的受控端连接；所述谐振变换模块的初级侧经由所述第一开关模块与所述电源输入端连接，且经由所述第二开关模块接到初级地，所述谐振变换模块的次级侧分别与所述第一电源输出模块的输入端和所述第二电源输出模块的输入端连接；所述第一电源输出模块的输出端与所述第一电源输出端连接，所述第二电源输出模块的输出端与所述第二电源输出端连接；所述第一反馈模块的输入端与所述第一电源输出端连接，所述第一反馈模块的输出端与所述驱动控制模块的第一电压反馈端连接；所述第二反馈模块的输入端与所述第二电源输出端连接，所述第二反馈模块的输出端与所述驱动控制模块的第二电压反馈端连接。
优选地，所述驱动控制模块包括驱动控制器、第一PWM电源控制器和第二PWM电源控制器；所述驱动控制器设置为检测一方波信号，根据所述方波信号的高低电平状态控制所述第一PWM电源控制器驱动所述第一开关模块开通，或者控制所述第二PWM电源控制器驱动所述第二开关模块开通；
所述驱动控制器的方波信号检测端与经由所述第一开关模块与所述电源输入端连接，且经由所述第二开关模块接到初级地，所述驱动控制器的第一控制输出端与所述第一PWM电源控制器的受控端连接，所述驱动控制器的第二控制输出端与第二PWM电源控制器的受控端连接；所述第一PWM电源控制器的驱动输出端与所述第一开关模块的受控端连接，所述第二PWM电源控制器的驱动输出端与所述第二开关模块的受控端连接。
优选地，所述第一开关模块包括第一MOS管，所述第二开关模块包括第二MOS管；
所述第一MOS管的栅极与所述驱动控制模块的第一驱动输出端连接，所述第一MOS管的漏极与所述电源输入端连接，所述第一MOS管的源极与所述谐振变换模块的初级侧连接，且与所述驱动控制模块的方波信号检测端连接；
所述第二MOS管的栅极与所述驱动控制模块的第二驱动输出端连接，所述第二MOS管的漏极与所述谐振变换模块的初级侧连接，且与所述驱动控制模块的方波信号检测端连接，所述第二MOS管的源极接到初级地。
优选地，所述谐振变换模块包括变压器和第一电容；所述变压器包括初级线圈、第一次级线圈和第二次级线圈；
所述初级线圈的同名端经由所述第一开关模块与所述电源输入端连接，且经由所述第二开关模块接到初级地，所述初级线圈的异名端与所述第一电容的正极连接，所述第一电容的负极接到初级地；
所述第一次级线圈的同名端与所述第一电源输出模块的输入端连接，所述第一次级线圈的异名端接到次级地；所述第二次级线圈的异名端与所述第二电源输出模块的输入端连接，所述第二次级线圈的同名端接到次级地。
优选地，所述第一电源输出模块包括第一二极管和第二电容；
所述第一二极管的阳极与所述第一次级线圈的同名端连接，所述第一二极管的阴极与所述第二电容的正极连接，且与所述第一电源输出端连接，所述第二电容的负极接到次级地。
优选地，所述第二电源输出模块包括第二二极管和第三电容；
所述第二二极管的阳极与所述第二次级线圈的异名端连接，所述第二二极管的阴极与所述第三电容的正极连接，且与所述第二电源输出端连接，所述第三电容的负极接到次级地。
优选地，所述第一反馈模块包括电流取样电阻、第一误差放大器和第一光电耦合器；
所述电流取样电阻的第一端设置为通过由所述第一电源电压供电的用电负载与所述第一电源输出端连接，所述电流取样电阻的第二端接到次级地；所述第一误差放大器的输入端与所述电流取样电阻的第一端连接，所述第一误差放大器的输出端与第一光电耦合器中发光二极管的阴极连接；所述第一光电耦合器中发光二极管的阳极与所述第二电源输出端连接，所述第一光电耦合器中光电三极管的集电极与所述驱动控制模块的第一电压反馈端连接，所述第一光电耦合器中光电三极管的发射极接到初级地。
优选地，所述第二反馈模块包括第二误差放大器和第二光电耦合器；
所述第二误差放大器的输入端与所述第二电源输出端连接，所述第二误差放大器的输出端与所述第二光电耦合器中发光二极管的阴极连接；所述第二光电耦合器中发光二极管的阳极与所述第二电源输出端连接，所述第二光电耦合器中光电三极管的集电极与所述驱动控制模块的第二电压反馈端连接，所述第一光电耦合器中光电三极管的发射极经由所述谐振变换模块的初级侧接到初级地。
优选地，所述电源输入端经由一第四电容接到初级地。
本申请还提供一种电子设备，该电子设备包括谐振电源，该谐振电源包括电源输入端、驱动控制模块、第一开关模块、第二开关模块、谐振变换模块、第一电源输出模块、第二电源输出模块、第一反馈模块、第二反馈模块、第一电源输出端和第二电源输出端；
所述驱动控制模块设置为检测一方波信号，根据所述方波信号的高低电平状态驱动所述第一开关模块或所述第二开关模块开通；所述谐振变换模块设置为在所述第一开关模块开通时产生第一感应电压，在所述第二开关模块开通时产生第二感应电压；所述第一电源输出模块设置为将所述第一感应电压转换为直流的第一电源电压后输出至所述第一电源输出端；所述第二电源输出模块设置为将所述第二感应电压转换为直流的第二电源电压后输出至所述第二电源输出端；所述第一反馈模块设置为检测所述第一电源电压，并反馈第一检测信号给所述驱动控制模块，以校正所述第一电源电压；所述第二反馈模块设置为检测所述第二电源电压，并反馈第二检测信号给所述驱动控制模块，以校正所述第二电源电压；
所述驱动控制模块的方波信号检测端经由所述第一开关模块与所述电源输入端连接，且经由所述第二开关模块接到初级地，所述驱动控制模块的第一驱动输出端与所述第一开关模块的受控端连接，所述驱动控制模块的第二驱动输出端与所述第二开关模块的受控端连接；所述谐振变换模块的初级侧经由所述第一开关模块与所述电源输入端连接，且经由所述第二开关模块接到初级地，所述谐振变换模块的次级侧分别与所述第一电源输出模块的输入端和所述第二电源输出模块的输入端连接；所述第一电源输出模块的输出端与所述第一电源输出端连接，所述第二电源输出模块的输出端与所述第二电源输出端连接；所述第一反馈模块的输入端与所述第一电源输出端连接，所述第一反馈模块的输出端与所述驱动控制模块的第一电压反馈端连接；所述第二反馈模块的输入端与所述第二电源输出端连接，所述第二反馈模块的输出端与所述驱动控制模块的第二电压反馈端连接。
本申请提供的谐振电源，通过驱动控制模块根据检测到的方波信号的高低电平状态驱动第一开关模块和第二开关模块不同时开通，谐振变换模块在第一开关模块开通时产生第一感应电压，在第二开关模块开通时产生第二感应电压，第一电源输出模块将第一感应电压转换为直流的第一电源电压后输出至第一电源输出端，第二电源输出模块将第二感应电压转换为直流的第二电源电压后输出至第二电源输出端；而且，第一反馈模块检测第一电源输出端输出的第一电源电压，并反馈第一检测信号给驱动控制模块，以校正第一电源电压；第二反馈模块检测第二电源输出端输出的第二电源电压，并反馈第二检测信号给驱动控制模块，以校正所述第二电源电压。从而本申请通过一个谐振电源输出两路不同的电源电压同时给不同供电需求的用电负载供电，而且，分别对两路电源电压进行单独检测和反馈，能够对两路输出电压进行独立调控，单个电源实现了传统两个电源功能，降低了电源成本，也提高了电源的可靠性。
附图说明
图1为本申请谐振电源一实施例的原理结构示意图；
图2为本申请谐振电源一可选实施例的电路结构示意图。
本申请的目的、功能特点及优点的实现，将结合实施例，并参照附图作进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
本申请提供一种谐振电源。
参照图1，图1为本申请谐振电源一实施例的原理结构示意图。
本申请一实施例中，如图1所示，本申请谐振电源包括电源输入端VB、驱动控制模块10、第一开关模块20、第二开关模块30、谐振变换模块40、第一电源输出模块50、第二电源输出模块60、第一反馈模块70、第二反馈模块80、第一电源输出端VOUT1和第二电源输出端VOUT2。
所述驱动控制模块10设置为检测一方波信号，根据所述方波信号的高低电平状态驱动所述第一开关模块20或所述第二开关模块30开通；所述谐振变换模块40设置为在所述第一开关模块20开通时产生第一感应电压，在所述第二开关模块30开通时产生第二感应电压；所述第一电源输出模块50将所述第一感应电压转换为直流的第一电源电压后输出至所述第一电源输出端VOUT1；所述第二电源输出模块60设置为将所述第二感应电压转换为直流的第二电源电压后输出至所述第二电源输出端VOUT2；所述第一反馈模块70设置为检测所述第一电源电压，并反馈第一检测信号给所述驱动控制模块10，以校正所述第一电源电压；所述第二反馈模块80设置为检测所述第二电源电压，并反馈第二检测信号给所述驱动控制模块10，以校正所述第二电源电压。
所述驱动控制模块10的方波信号检测端经由所述第一开关模块20与所述电源输入端VB连接，且经由所述第二开关模块30接到初级地，所述驱动控制模块10的第一驱动输出端与所述第一开关模块20的受控端连接，所述驱动控制模块10的第二驱动输出端与所述第二开关模块30的受控端连接；所述谐振变换模块40的初级侧经由所述第一开关模块20与所述电源输入端VB连接，且经由所述第二开关模块30接到初级地，所述谐振变换模块40的次级侧分别与所述第一电源输出模块50的输入端和所述第二电源输出模块60的输入端连接；所述第一电源输出模块50的输出端与所述第一电源输出端VOUT1连接，所述第二电源输出模块60的输出端与所述第二电源输出端VOUT2连接；所述第一反馈模块70的输入端与所述第一电源输出端VOUT1连接，所述第一反馈模块70的输出端与所述驱动控制模块10的第一电压反馈端连接；所述第二反馈模块80的输入端与所述第二电源输出端VOUT2连接，所述第二反馈模块80的输出端与所述驱动控制模块10的第二电压反馈端连接。
在本实施例中，驱动控制模块10检测一方波信号，当该方波信号为低电平时，驱动控制模块10驱动第一开关模块20开通，当该方波信号为高电平时，驱动控制模块10驱动第二开关模块30开通。在第一开关模块20开通时，电源输入端VB、第一开关模块20和谐振变换模块40形成充电回路，电源输入端VB的输入电压通过第一开关模块20给谐振变换模块40的初级侧充电，此时谐振变换模块40在次级侧产生第一感应电压；第一电源输出模块50对谐振变换模块40产生的第一感应电压进行交流电转直流电处理后，将交流的第一感应电压转换为直流的第一电源电压输出到第一电源输出端VOUT1，通过第一电源输出端VOUT1将第一电源电压输出给由第一电源电压供电的用电负载供电。在第二开关模块30开通时，谐振变换模块40的初级侧和第二开关模块30形成放电回路，谐振变换模块40的初级侧放电，此时谐振变换模块40在次级侧产生第二感应电压；第二电源输出模块60对谐振变换模块40产生的第二感应电压进行交流电转直流电处理后，将交流的第二感应电压转换为直流的第二电源电压输出到第二电源输出端VOUT2，通过第二电源输出端VOUT2输出第二电源电压给由第二电源电压供电的用电负载供电。
而且，第一反馈模块70对第一电源输出端VOUT1输出的第一电源电压进行检测，可选地，第一反馈模块70在第一电源电压给对应的用电负载供电时，对流过该用电负载的电流进行取样并获得相应的取样电压，第一反馈模块70在检测到该取样电压高于预设取样电压时，输出第一反馈信号至驱动控制模块10，通过驱动控制模块10控制第二开关模块30的开通时间减小，且维持第一开关模块20的开通时间不变。由于第一开关模块20的开通时间不变，第二开关模块30的开通时间减小，使得谐振变换模块40在第一开关模块20开通时产生的第一感应电压降低，从而使得经过第一电源输出模块50的处理后输出的直流的第一电源电压降低，从而通过第一电源输出端VOUT1输出的第一电源电压得到校正，即使得流过由第一电源电压供电的用电负载的电流得到校正，使得第一电源输出端VOUT1输出的第一电源电压稳定，实现了对第一电源输出端VOUT1的输出电压的独立调控。
第二反馈模块80对第二电源输出端VOUT2输出的第二电源电压进行检测，可选地，第二反馈模块80对第二电源输出端VOUT2输出的第二电源电压进行采样，第二反馈模块80在检测第二电源电压高于预设输出电压时，输出第二反馈信号至驱动控制模块10，通过驱动控制模块10控制第一开关模块20的开通时间减小，且维持第二开关模块30的开通时间不变。由于第一开关模块20的开通时间减小，第二开关模块30的开通时间不变，使得谐振变换模块40在第二开关模块30开通时产生的第二感应电压降低，从而使得经过第二电源输出模块60的处理后输出的第二电源电压降低，从而通过第二电源输出端VOUT2输出的第二电源电压进行校正，使得第二电源输出端VOUT2输出的第二电源电压稳定，实现了对第二电源输出端VOUT2的输出电压的独立调控。
相对于示例性技术，本申请谐振电源通过驱动控制模块10根据检测到的方波信号的高低电平状态驱动第一开关模块20和第二开关模块30不同时开通，谐振变换模块40在第一开关模块20开通时产生第一感应电压，在第二开关模块30开通时产生第二感应电压，第一电源输出模块50将第一感应电压转换为直流的第一电源电压后输出至第一电源输出端VOUT1，第二电源输出模块60将第二感应电压转换为直流的第二电源电压后输出至第二电源输出端VOUT2；而且，第一反馈模块70检测第一电源输出端VOUT1输出的第一电源电压，并反馈第一检测信号给驱动控制模块10，以校正第一电源电压；第二反馈模块80检测第二电源输出端VOUT2输出的第二电源电压，并反馈第二检测信号给驱动控制模块10，以校正所述第二电源电压。本申请通过一个谐振电源输出两路不同的电源电压同时给不同供电需求的用电负载供电，而且，分别对两路电源电压进行单独检测和反馈，能够对两路输出电压进行独立调控，单个电源实现了传统两个电源功能，降低了电源成本，提高了电源转换效率，也提高了电源的可靠性。
再参照图2，图2为本申请谐振电源一可选实施例的电路结构示意图。
如图2所示，驱动控制模块10包括驱动控制器U1、第一PWM电源控制器U2和第二PWM电源控制器U3；所述驱动控制器U1设置为检测一方波信号，根据所述方波信号的高低电平状态控制所述第一PWM电源控制器U2驱动所述第一开关模块20开通，或者控制所述第二PWM电源控制器U3驱动所述第二开关模块30开通。
所述驱动控制器U1的方波信号检测端Vi与经由所述第一开关模块20与所述电源输入端VB连接，且经由所述第二开关模块30接到初级地，所述驱动控制器U1的第一控制输出端Vo1与所述第一PWM电源控制器U2的受控端Con1连接，所述驱动控制器U1的第二控制输出端Vo2与第二PWM电源控制器U3的受控端Con2连接；所述第一PWM电源控制器U2的驱动输出端Dr1与所述第一开关模块20的受控端连接，所述第二PWM电源控制器U3的驱动输出端Dr2与所述第二开关模块30的受控端连接。
如图2所示，所述第一开关模块20包括第一MOS管Q1，所述第二开关模块30包括第二MOS管Q2。本实施例优选地，第一MOS管Q1和第二MOS管Q2均为NMOS管，在一变形的实施例中，第一MOS管Q1和第二MOS管Q2可以用PMOS管代替，此处不作限制。
所述第一MOS管Q1的栅极与所述驱动控制模块10的第一驱动输出端连接，如图2中，第一MOS管Q1的栅极与第一PWM电源控制器U2的驱动输出端Dr1连接，所述第一MOS管Q1的漏极与所述电源输入端VB连接，所述第一MOS管Q1的源极与所述谐振变换模块40的初级侧连接，且第一MOS管Q1的源极与所述驱动控制模块10的方波信号检测端连接，如图2中，第一MOS管Q1的源极与驱动控制器U1的方波信号检测端Vi连接。
所述第二MOS管Q2的栅极与所述驱动控制模块10的第二驱动输出端连接，如图2中，第二MOS管Q2的栅极与第二PWM电源控制器U3的驱动输出端Dr2连接，所述第二MOS管Q2的漏极与所述谐振变换模块40的初级侧连接，且第二MOS管Q2的漏极与所述驱动控制模块10的方波信号检测端连接，如图2中，第二MOS管Q2的漏极与驱动控制器U1的方波信号检测端Vi连接，所述第二MOS管Q2的源极接到初级地。
如图2所示，所述谐振变换模块40包括变压器T1和第一电容C1；所述变压器T1包括初级线圈N1、第一次级线圈N2和第二次级线圈N3。
所述初级线圈N1的同名端经由所述第一开关模块20与所述电源输入端VB连接，且经由所述第二开关模块30接到初级地，如图2中，初级线圈N1的同名端与第一MOS管Q1的源极连接，经由第一MOS管Q1与所述电源输入端VB连接，且初级线圈N1的同名端与第二MOS管Q2的漏极连接，经由第二MOS管Q2接到初级地。所述初级线圈N1的异名端与所述第一电容C1的正极连接，所述第一电容C1的负极接到初级地。
所述第一次级线圈N2的同名端与所述第一电源输出模块50的输入端连接，所述第一次级线圈N2的异名端接到次级地；所述第二次级线圈N3的异名端与所述第二电源输出模块60的输入端连接，所述第二次级线圈N3的同名端接到次级地。
如图2所示，所述第一电源输出模块50包括第一二极管D1和第二电容C2。
所述第一二极管D1的阳极与所述第一次级线圈N2的同名端连接，所述第一二极管D1的阴极与所述第二电容C2的正极连接，且与第一电源输出端VOUT1连接，所述第二电容C2的负极接到次级地。
如图2所示，所述第二电源输出模块60包括第二二极管D2和第三电容C3。
所述第二二极管D2的阳极与所述第二次级线圈N3的异名端连接，所述第二二极管D2的阴极与所述第三电容C3的正极连接，且与所述第二电源输出端VOUT2连接，所述第三电容C3的负极接到次级地。
如图2所示，电源输入端VB经由第四电容C4接到初级地，第四电容C4可对电源输入端VB输入的输入电压进行滤波，且存储电能。
如图2所示，所述第一反馈模块70包括电流取样电阻RS、第一误差放大器U4和第一光电耦合器U5。
所述电流取样电阻RS的第一端设置为通过由所述第一电源电压供电的用电负载与所述第一电源输出端VOUT1连接，所述电流取样电阻RS的第二端接到次级地；所述第一误差放大器U4的输入端与所述电流取样电阻RS的第一端连接，所述第一误差放大器U4的输出端与第一光电耦合器U5中发光二极管的阴极连接；所述第一光电耦合器U5中发光二极管的阳极与所述第二电源输出端VOUT2连接，所述第一光电耦合器U5中光电三极管的集电极与所述驱动控制模块10的第一电压反馈端连接，如图2中，第一光电耦合器U5中光电三极管的集电极与第二PWM电源控制器U3的电压反馈端FB1连接，所述第一光电耦合器U5中光电三极管的发射极接到初级地。
如图2所示，所述第二反馈模块80包括第二误差放大器U6和第二光电耦合器U7。
所述第二误差放大器U6的输入端与所述第二电源输出端VOUT2连接，所述第二误差放大器U6的输出端与所述第二光电耦合器U7中发光二极管的阴极连接；所述第二光电耦合器U7中发光二极管的阳极与所述第二电源输出端VOUT2连接，所述第二光电耦合器U7中光电三极管的集电极与所述驱动控制模块10的第二电压反馈端连接，如图2中，第二光电耦合器U7中光电三极管的集电极与第一PWM电源控制器U2的电压反馈端FB2连接，所述第一光电耦合器U5中光电三极管的发射极经由所述谐振变换模块40的初级侧接到初级地，如图2中，第一光电耦合器U5中光电三极管的发射极经由变压器T1的初级线圈N1、第一电容C1接到初级地。
如图1和图2所示，本申请谐振电源的工作原理描述如下：
在谐振电源启动时，图2中A点处输入一方波信号。在谐振电源正常工作过程中，驱动控制模块10中的驱动控制器U1通过其方波信号检测端Vi检测A点处的方波信号的高低电平状态，根据A点处的方波信号的高低电平状态控制第一PWM电源控制器U2驱动第一MOS管Q1导通，或者控制第二PWM电源控制器U3驱动第二MOS管Q2导通，使得第一MOS管Q1和第二MOS管Q2不同时导通。
下面以当驱动控制器U1检测到A点处为低电平信号时，控制第二PWM电源控制器U3驱动第二MOS管Q2导通；当驱动控制器U1检测到A点处为高电平信号时，控制第一PWM电源控制器U2驱动第一MOS管Q1导通为例进行具体说明：
当驱动控制器U1检测到A点处为低电平信号时，驱动控制器U1通过其第一控制输出端Vo1输出第一控制信号至第一PWM电源控制器U2的受控端Con1，同时通过其第二控制输出端Vo2输出第二控制信号至第二PWM电源控制器U3的受控端Con2。第二PWM电源控制器U3检测到驱动控制器U1输出的第二控制信号后，第二PWM电源控制器U3通过其驱动输出端Dr2输出高电平的驱动信号至第二MOS管Q2的栅极，使得第二MOS管Q2导通；同时，第一PWM电源控制器U2检测到驱动控制器U1输出的第一控制信号后，第一PWM电源控制器U2通过其驱动输出端Dr1输出低电平的驱动信号至第一MOS管Q1的栅极，使得第一MOS管Q1处于关断状态。
在第二MOS管Q2导通期间，从第一电容C1、变压器T1的初级线圈N1、第二MOS管Q2到初级地形成放电回路，第一电容C1通过变压器T1的初级线圈N1、第二MOS管Q2放电，此时流过变压器T1的初级线圈N1中的电流是从初级线圈N1的异名端流向初级线圈N1的同名端。相应地，在变压器T1的第一次级线圈N2及第二次级线圈N3均上产生相应的感应电压，而且流过变压器T1的第一次级线圈N2中的电流也是从第一次级线圈N2的异名端流向第一次级线圈N2的同名端，流过变压器T1的第二次级线圈N3中的电流也是从第二次级线圈N3的异名端流向第二次级线圈N3的同名端，从而，第一次级线圈N2产生的感应电压给第一二极管D1的阳极加上负向电压，使得第一二极管D1关断，第二次级线圈N3产生的感应电压给第二二极管D2的阳极加上正向电压，使得第二二极管D2导通。
在第二二极管D2导通期间，第二二极管D2对变压器T1的第二次级线圈N3产生的交流感应电压进行整流后转换为直流电压，第三电容C3对该直流电压进行滤波，将经滤波后的直流电压，即上述第二电源电压输出至第二电源输出端VOUT2。从而，通过第二电源输出端VOUT2可输出第二电源电压给由第二电源电压供电的用电负载供电。
由于第二PWM电源控制器U3的驱动输出端Dr2输出的驱动信号是PWM信号，因此，在第二PWM电源控制器U3输出高电平的驱动信号驱动第二MOS管Q2导通一段时间后，第二PWM电源控制器U3输出的驱动信号将变为低电平，控制第二MOS管Q2关断。
根据上述描述可知，在第二MOS管Q2导通期间，变压器T1的初级线圈N1中有电流流过，流过变压器T1的初级线圈N1中的电流是从初级线圈N1的异名端流向初级线圈N1的同名端，而由于变压器T1的初级线圈N1是电感元件，电感具有电流不能突变的特性，从而，在第二MOS管Q2从导通到关断瞬间，变压器T1的初级线圈N1还会有电流流过，而且电流方向不变，此时，变压器T1的初级线圈N1中的电流从初级线圈N1、A点、第一MOS管Q1流向电源输入端VB。
由于电流从A点流向电源输入端VB，此时A点处的方波信号由低电平变为高电平。从而，此时输入到驱动控制器U1的方波信号检测端Vi的方波信号为高电平，驱动控制器U1检测到该高电平信号后，驱动控制器U1通过其第一控制输出端Vo1输出第一控制信号至第一PWM电源控制器U2的受控端Con1，同时通过其第二控制输出端Vo2输出第二控制信号至第二PWM电源控制器U3的受控端Con2。第一PWM电源控制器U2检测到驱动控制器U1输出的第一控制信号后，第一PWM电源控制器U2通过其驱动输出端Dr2输出高电平的驱动信号至第一MOS管Q1的栅极，使得第一MOS管Q1导通；同时，第二PWM电源控制器U3检测到驱动控制器U1输出的第二控制信号后，第二PWM电源控制器U3通过其驱动输出端Dr2输出低电平的驱动信号至第二MOS管Q2的栅极，使得第二MOS管Q2关断。
在第一MOS管Q1导通期间，从电源输入端VB、第一MOS管Q1、变压器T1的初级线圈N1、第一电容C1到初级地形成充电回路，电源输入端VB输入的输入电压通过第一MOS管Q1、变压器T1的初级线圈N1给第一电容C1充电，此时流过变压器T1的初级线圈N1中的电流是从初级线圈N1的同名端流向初级线圈N1的异名端。相应地，在变压器T1的第一次级线圈N2及第二次级线圈N3均上产生相应的感应电压，而且流过变压器T1的第一次级线圈N2中的电流也是从第一次级线圈N2的同名端流向第一次级线圈N2的异名端，流过变压器T1的第二次级线圈N3中的电流也是从第二次级线圈N3的同名端流向第二次级线圈N3的异名端，从而，第一次级线圈N2产生的感应电压给第一二极管D1的阳极加上正向电压，使得第一二极管D1导通，第二次级线圈N3产生的感应电压给第二二极管D2的阳极加上负向电压，使得第二二极管D2关断。
在第一二极管D1导通期间，第一二极管D1对变压器T1的第一次级线圈N2产生的交流感应电压进行整流后转换为直流电压，第二电容C2对该直流电压进行滤波，并将经滤波后的直流电压，即上述第一电源电压输出至第一电源输出端VOUT1。从而，通过第一电源输出端VOUT1可输出第一电源电压给由第一电源电压供电的用电负载供电。
同理，由于第一PWM电源控制器U2的驱动输出端Dr1输出的驱动信号也是PWM信号，因此，在第一PWM电源控制器U2输出高电平的驱动信号驱动第一MOS管Q1导通一段时间后，第一PWM电源控制器U2输出的驱动信号将变为低电平，控制第一MOS管Q1关断。如此，谐振电源进入下一个工作周期，重复上述工作原理，此处不再赘述。
如图2所示，第一反馈模块70中，电流取样电阻RS对用电负载的电流进行取样，在电流取样电阻RS上形成取样电压，该取样电压输入到第一误差放大器U4的输入端。当第一误差放大器U4检测到该取样电压高于预设取样电压，即流过用电负载的电流高于预设电流时，第一误差放大器U4将第一光电耦合器U5中发光二极管的阴极电压拉低，从而第一光电耦合器U5中的电流加大，第一光电耦合器U5中光电三极管的集电极电压也被拉低，即反馈到第二PWM电源控制器U3的电压反馈端FB1的电压降低，此时第二PWM电源控制器U3输出到第二MOS管Q2的驱动信号中高电平所占的时间减少，即第二PWM电源控制器U3的驱动输出端Dr2输出的驱动信号的占空比减小，使得第二MOS管Q2的导通时间变短。由于A点电压是方波信号，而且第二MOS管Q2的导通时间变短，而第一MOS管Q1的导通时间不变，即A点处方波信号的低电平所占时间变短，高电平所占时间不变，因此A点处方波信号的占空比会增大。由于第一电容C1上的平均电压Vc1=DA*VB，其中，DA为A点处方波信号占空比，VB为电源输入端输入的输入电压，因此第一电容C1上的平均电压升高。从而，在第二MOS管Q2关断后，切换到第一MOS管Q1导通时，第一电容C1充电的充电电压变小，使得加在变压器T1的初级线圈N1上的电压降低，相应地，变压器T1的第一次级线圈N2上产生的感应电压降低，进而该感应电压经过第一二极管D1的整流，以及第二电容C2的滤波后输出的第一电源电压降低，从而使得第一电源输出端VOUT1输出的第一电源电压降低，第一电源输出端VOUT1输出的第二电源电压得到校正，即使得流过用电负载的电流减小，用电负载中的电流得到校正，实现对第一电源输出端VOUT1的输出电压进行独立调控。
如图2所示，第二反馈模块80中，当第二误差放大器U6检测到第二电源输出端输出的第二电源电压高于预设电压时，第二误差放大器U6将第二光电耦合器U7中发光二极管的阴极电压拉低，从而第二光电耦合器U7中的电流加大，第二光电耦合器U7中光电三极管的集电极电压也被拉低，即反馈到第一PWM电源控制器U2的电压反馈端FB2的电压降低，此时第一PWM电源控制器U2输出到第一MOS管Q1的驱动信号中高电平所占的时间减少，即第一PWM电源控制器U2输出的驱动信号的占空比减小，使得第一MOS管Q1的导通时间变短。由于A点电压是方波信号，而且第一MOS管Q1的导通时间变短，而第二MOS管Q2的导通时间不变，即A点处方波信号的高电平所占时间变短，低电平所占时间不变，因此A点处方波信号的占空比会减小。由于第一电容C1上的平均电压Vc1=DA*VB，其中DA为A点处方波信号占空比，VB为电源输入端输入的输入电压，因此第一电容C1上的平均电压降低。从而，在第一MOS管Q1关断后，切换到第二MOS管Q2导通时，第一电容C1放电的放电电压变小，使得加在变压器T1的初级线圈N1上的电压降低，相应地，变压器T1的第二次级线圈N3上产生的感应电压降低，进而该感应电压经过第二二极管D2的整流，以及第三电容C3的滤波后输出的第二电源电压降低，从而使得第二电源输出端VOUT2输出的第二电源电压降低，第二电源输出端VOUT2输出的第二电源电压得到校正，实现对第二电源输出端VOUT2的输出电压进行独立调控。
本申请还提供一种电子设备，该电子设备包括谐振电源，该谐振电源的结构、工作原理以及所带来的有效果均参照上述实施例，此处不再赘述。
在一可选实施例中，本申请电子设备可以是LED背光电视机，谐振电源输出的第一电源电压和第二电源电压可分别给LED背光灯条和电视机芯供电，LED背光电视机通过单个谐振电源提供两路不同的电源电压分别驱动背光和机芯。
以上所述仅为本申请的优选实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (10)

  1. 一种谐振电源，其中，包括电源输入端、驱动控制模块、第一开关模块、第二开关模块、谐振变换模块、第一电源输出模块、第二电源输出模块、第一反馈模块、第二反馈模块、第一电源输出端和第二电源输出端；
    所述驱动控制模块设置为检测一方波信号，根据所述方波信号的高低电平状态驱动所述第一开关模块或所述第二开关模块开通；所述谐振变换模块设置为在所述第一开关模块开通时产生第一感应电压，在所述第二开关模块开通时产生第二感应电压；所述第一电源输出模块设置为将所述第一感应电压转换为直流的第一电源电压后输出至所述第一电源输出端；所述第二电源输出模块设置为将所述第二感应电压转换为直流的第二电源电压后输出至所述第二电源输出端；所述第一反馈模块设置为检测所述第一电源电压，并反馈第一检测信号给所述驱动控制模块，以校正所述第一电源电压；所述第二反馈模块设置为检测所述第二电源电压，并反馈第二检测信号给所述驱动控制模块，以校正所述第二电源电压；
    所述驱动控制模块的方波信号检测端经由所述第一开关模块与所述电源输入端连接，且经由所述第二开关模块接到初级地，所述驱动控制模块的第一驱动输出端与所述第一开关模块的受控端连接，所述驱动控制模块的第二驱动输出端与所述第二开关模块的受控端连接；所述谐振变换模块的初级侧经由所述第一开关模块与所述电源输入端连接，且经由所述第二开关模块接到初级地，所述谐振变换模块的次级侧分别与所述第一电源输出模块的输入端和所述第二电源输出模块的输入端连接；所述第一电源输出模块的输出端与所述第一电源输出端连接，所述第二电源输出模块的输出端与所述第二电源输出端连接；所述第一反馈模块的输入端与所述第一电源输出端连接，所述第一反馈模块的输出端与所述驱动控制模块的第一电压反馈端连接；所述第二反馈模块的输入端与所述第二电源输出端连接，所述第二反馈模块的输出端与所述驱动控制模块的第二电压反馈端连接。
  2. 如权利要求1所述的谐振电源，其中，所述驱动控制模块包括驱动控制器、第一PWM电源控制器和第二PWM电源控制器；所述驱动控制器设置为检测一方波信号，根据所述方波信号的高低电平状态控制所述第一PWM电源控制器驱动所述第一开关模块开通，或者控制所述第二PWM电源控制器驱动所述第二开关模块开通；
    所述驱动控制器的方波信号检测端与经由所述第一开关模块与所述电源输入端连接，且经由所述第二开关模块接到初级地，所述驱动控制器的第一控制输出端与所述第一PWM电源控制器的受控端连接，所述驱动控制器的第二控制输出端与第二PWM电源控制器的受控端连接；所述第一PWM电源控制器的驱动输出端与所述第一开关模块的受控端连接，所述第二PWM电源控制器的驱动输出端与所述第二开关模块的受控端连接。
  3. 如权利要求1所述的谐振电源，其中，所述第一开关模块包括第一MOS管，所述第二开关模块包括第二MOS管；
    所述第一MOS管的栅极与所述驱动控制模块的第一驱动输出端连接，所述第一MOS管的漏极与所述电源输入端连接，所述第一MOS管的源极与所述谐振变换模块的初级侧连接，且与所述驱动控制模块的方波信号检测端连接；
    所述第二MOS管的栅极与所述驱动控制模块的第二驱动输出端连接，所述第二MOS管的漏极与所述谐振变换模块的初级侧连接，且与所述驱动控制模块的方波信号检测端连接，所述第二MOS管的源极接到初级地。
  4. 如权利要求1所述的谐振电源，其中，所述谐振变换模块包括变压器和第一电容；所述变压器包括初级线圈、第一次级线圈和第二次级线圈；
    所述初级线圈的同名端经由所述第一开关模块与所述电源输入端连接，且经由所述第二开关模块接到初级地，所述初级线圈的异名端与所述第一电容的正极连接，所述第一电容的负极接到初级地；
    所述第一次级线圈的同名端与所述第一电源输出模块的输入端连接，所述第一次级线圈的异名端接到次级地；所述第二次级线圈的异名端与所述第二电源输出模块的输入端连接，所述第二次级线圈的同名端接到次级地。
  5. 如权利要求4所述的谐振电源，其中，所述第一电源输出模块包括第一二极管和第二电容；
    所述第一二极管的阳极与所述第一次级线圈的同名端连接，所述第一二极管的阴极与所述第二电容的正极连接，且与所述第一电源输出端连接，所述第二电容的负极接到次级地。
  6. 如权利要求4所述的谐振电源，其中，所述第二电源输出模块包括第二二极管和第三电容；
    所述第二二极管的阳极与所述第二次级线圈的异名端连接，所述第二二极管的阴极与所述第三电容的正极连接，且与所述第二电源输出端连接，所述第三电容的负极接到次级地。
  7. 如权利要求1所述的谐振电源，其中，所述第一反馈模块包括电流取样电阻、第一误差放大器和第一光电耦合器；
    所述电流取样电阻的第一端设置为通过由所述第一电源电压供电的用电负载与所述第一电源输出端连接，所述电流取样电阻的第二端接到次级地；所述第一误差放大器的输入端与所述电流取样电阻的第一端连接，所述第一误差放大器的输出端与第一光电耦合器中发光二极管的阴极连接；所述第一光电耦合器中发光二极管的阳极与所述第二电源输出端连接，所述第一光电耦合器中光电三极管的集电极与所述驱动控制模块的第一电压反馈端连接，所述第一光电耦合器中光电三极管的发射极接到初级地。
  8. 如权利要求1所述的谐振电源，其中，所述第二反馈模块包括第二误差放大器和第二光电耦合器；
    所述第二误差放大器的输入端与所述第二电源输出端连接，所述第二误差放大器的输出端与所述第二光电耦合器中发光二极管的阴极连接；所述第二光电耦合器中发光二极管的阳极与所述第二电源输出端连接，所述第二光电耦合器中光电三极管的集电极与所述驱动控制模块的第二电压反馈端连接，所述第一光电耦合器中光电三极管的发射极经由所述谐振变换模块的初级侧接到初级地。
  9. 如权利要求1所述的谐振电源，其中，所述电源输入端经由一第四电容接到初级地。
  10. 一种电子设备，其中，包括权利要求1至9中任一项所述的谐振电源。
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