WO2021238571A1 - 电压调整装置、芯片、电源及电子设备 - Google Patents

电压调整装置、芯片、电源及电子设备 Download PDF

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Publication number
WO2021238571A1
WO2021238571A1 PCT/CN2021/091044 CN2021091044W WO2021238571A1 WO 2021238571 A1 WO2021238571 A1 WO 2021238571A1 CN 2021091044 W CN2021091044 W CN 2021091044W WO 2021238571 A1 WO2021238571 A1 WO 2021238571A1
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Prior art keywords
transistor
voltage
electrically connected
input
current
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PCT/CN2021/091044
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English (en)
French (fr)
Inventor
金宁
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北京集创北方科技股份有限公司
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Application filed by 北京集创北方科技股份有限公司 filed Critical 北京集创北方科技股份有限公司
Priority to KR1020227016047A priority Critical patent/KR102674839B1/ko
Priority to JP2022569590A priority patent/JP7479515B2/ja
Priority to EP21811850.3A priority patent/EP4134778A4/en
Publication of WO2021238571A1 publication Critical patent/WO2021238571A1/zh
Priority to US17/989,419 priority patent/US20230163686A1/en

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/561—Voltage to current 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
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • 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
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/04—Voltage dividers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0009—Devices or circuits for detecting current in a converter
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
    • H02M1/0019—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters the disturbance parameters being load current fluctuations
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
    • H02M1/0022—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters the disturbance parameters being input voltage fluctuations
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0025—Arrangements for modifying reference values, feedback values or error values in the control loop of a converter
    • 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
    • H02M1/0045—Converters combining the concepts of switch-mode regulation and linear regulation, e.g. linear pre-regulator to switching converter, linear and switching converter in parallel, same converter or same transistor operating either in linear or switching mode
    • 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
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the present disclosure relates to the field of integrated circuits, and in particular to a voltage adjustment device, a chip, a power supply, and electronic equipment.
  • TDMA Time division multiple access, time division multiplexing
  • input power every other segment The time will be disturbed, the up or down will jump 500mV within 10 ⁇ s, and the 500mV jump will last for at least 500 ⁇ s. If this kind of interference occurs, there must be overshoot or undershoot for the output of the DC-DC Boost architecture.
  • This disturbance is required to be less than 20mV under a load within 200mA and within 1A. The load is less than 60mV.
  • a voltage adjustment device which includes:
  • Voltage input module for receiving input voltage
  • a current determining module electrically connected to the voltage input module, and configured to determine an adjustment current according to the input voltage and the amount of change between the input voltage and the adjacent input voltage at the previous moment;
  • a control module electrically connected to the current determining module, and configured to output a control signal according to the adjusted current
  • the voltage output module is electrically connected to the voltage input module, the current determination module, and the control module, and is configured to output a target voltage according to the control signal and the input voltage.
  • the adjustment current includes a first adjustment current
  • the current determination module includes a first determination unit
  • the first determination unit is configured to determine the first adjustment current
  • the first determining unit includes a first operational amplifier, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, and a first resistor, wherein,
  • the positive input terminal of the first operational amplifier is used to receive the input voltage, and the negative input terminal of the first operational amplifier is electrically connected to the source of the first transistor and the first resistor of the first resistor. Terminal, the output terminal of the first operational amplifier is electrically connected to the gate of the first transistor, and the second terminal of the first resistor is grounded,
  • the drain of the first transistor is electrically connected to the source of the second transistor, the gate of the second transistor, and the gate of the third transistor,
  • the drain of the second transistor and the drain of the third transistor are used to receive a power supply voltage
  • the source of the third transistor is electrically connected to the source of the fourth transistor, the gate of the fourth transistor, and the gate of the fifth transistor,
  • the source of the fourth transistor and the source of the fifth transistor are grounded,
  • the drain of the fifth transistor is used to output the first adjustment current.
  • the adjustment current includes a second adjustment current
  • the current determination module includes a second determination unit
  • the second determination unit is configured to determine the second adjustment current.
  • the determination unit includes a current detection sub-unit, a multiplication sub-unit, and a current determination sub-unit, among which,
  • the current detection subunit is electrically connected to the voltage output module, and is used to detect a load current, and obtain a detection voltage according to the load current;
  • the multiplication subunit is electrically connected to the voltage output module and the voltage input module, and is configured to perform a multiplication operation on the input voltage and the detection voltage to obtain an intermediate voltage;
  • the current determining subunit is electrically connected to the multiplying subunit, and is configured to determine the second adjusted current according to the intermediate voltage.
  • the current detection subunit includes a sixth transistor, a seventh transistor, a second operational amplifier, a second resistor, and a first capacitor, where:
  • the gate of the sixth transistor is used to receive the control signal, the drain of the sixth transistor is electrically connected to the voltage input module, and the source of the sixth transistor is electrically connected to the second operational amplifier The positive input terminal of the seventh transistor, the drain of the seventh transistor,
  • the negative input terminal of the second operational amplifier is electrically connected to the voltage output module, the output terminal of the second operational amplifier is electrically connected to the gate of the seventh transistor, and the source of the seventh transistor is electrically connected. Connected to the first end of the second resistor and the first end of the first capacitor,
  • the first end of the second resistor is used to output the detection voltage.
  • the voltage output module includes an eighth transistor, a ninth transistor, a tenth transistor, an eleventh transistor, a third operational amplifier, a third resistor, a fourth resistor, and a second capacitor, where ,
  • the gate of the eighth transistor is electrically connected to the gate of the sixth transistor, the gate of the tenth transistor, and the control module for receiving the control signal,
  • the drain of the eighth transistor is electrically connected to the drain of the ninth transistor, the drain of the sixth transistor, the drain of the tenth transistor, and the voltage input module,
  • the source of the eighth transistor is electrically connected to the negative input terminal of the third operational amplifier, the negative input terminal of the second operational amplifier, the first terminal of the third resistor, and the second capacitor
  • the second end of the third resistor is electrically connected to the control module and the first end of the fourth resistor, the second end of the fourth resistor is grounded, and the second end of the second capacitor is grounded. The two ends are grounded
  • the gate of the ninth transistor is electrically connected to the control module for receiving the control signal, and the source of the ninth transistor is grounded,
  • the positive input terminal of the third operational amplifier is electrically connected to the source of the tenth transistor and the drain of the eleventh transistor, and the output terminal of the third operational amplifier is electrically connected to the eleventh transistor.
  • the source of the eleventh transistor is electrically connected to the current determination module and the control module,
  • the first end of the third resistor is used to output the target voltage.
  • the voltage input module includes an input capacitor and an input inductor, where:
  • the first end of the input capacitor is electrically connected to the first end of the input inductor for receiving the input voltage, and the second end of the input capacitor is grounded,
  • the second end of the input inductor is electrically connected to the drain of the ninth transistor, the drain of the eighth transistor, the drain of the sixth transistor, and the drain of the tenth transistor.
  • a chip including:
  • the voltage adjustment device The voltage adjustment device.
  • a power supply including:
  • the chip The chip.
  • an electronic device including:
  • the power supply is the power supply.
  • the electronic device includes a display, a smart phone or a portable device.
  • the embodiment of the present disclosure uses the current determination module to determine the adjustment current according to the input voltage and the change of the input voltage and the adjacent input voltage at the previous moment. As long as the input voltage changes, the current determination module can quickly In response, the adjusted current is output to the control module to generate a control signal. According to the control signal, the voltage output module can output a stable target voltage without excessive overshoot and undershoot. According to the voltage adjustment device proposed in the present disclosure, it can output a stable target voltage, can quickly respond to changes in the input voltage, and has the characteristics of reliability and stability.
  • Fig. 1 shows a schematic diagram of a voltage adjusting device according to an embodiment of the present disclosure.
  • Fig. 2 shows a schematic diagram of a voltage adjusting device according to an embodiment of the present disclosure.
  • Fig. 3 shows a schematic diagram of a first determining unit according to an embodiment of the present disclosure.
  • Fig. 4 shows a schematic diagram of voltage changes in a related art DC-DC architecture.
  • Fig. 5 shows a schematic diagram of voltage changes in a voltage adjusting device according to an embodiment of the present disclosure.
  • FIG. 6 shows a schematic diagram of voltage changes in the voltage adjustment device that does not use the second determining unit.
  • FIG. 7 shows a schematic diagram of voltage changes in the voltage adjustment device using the second determining unit.
  • FIG. 1 shows a schematic diagram of a voltage adjusting device according to an embodiment of the present disclosure.
  • the device includes:
  • the voltage input module 10 is used to receive input voltage
  • the current determining module 20 is electrically connected to the voltage input module 10 and configured to determine an adjustment current according to the input voltage and the amount of change between the input voltage and the adjacent input voltage at the previous moment;
  • the control module 30 is electrically connected to the current determining module 20 and configured to output a control signal according to the adjusted current;
  • the voltage output module 40 is electrically connected to the voltage input module 10, the current determination module 20, and the control module 30, and is configured to output a target voltage according to the control signal and the input voltage.
  • the embodiment of the present disclosure uses the current determination module to determine the adjustment current according to the input voltage and the change of the input voltage and the adjacent input voltage at the previous moment. As long as the input voltage changes, the current determination module can quickly In response, the adjusted current is output to the control module to generate a control signal. According to the control signal, the voltage output module can output a stable target voltage without excessive overshoot and undershoot. According to the voltage adjustment device proposed in the present disclosure, it can output a stable target voltage, can quickly respond to changes in the input voltage, and has the characteristics of reliability and stability.
  • the voltage adjustment device proposed in the present disclosure may include a DC-DC conversion circuit (DC-DC conversion circuit), which can output a stable and reliable target voltage according to the input DC voltage.
  • DC-DC conversion circuit DC-DC conversion circuit
  • FIG. 2 shows a schematic diagram of a voltage adjusting device according to an embodiment of the present disclosure.
  • the adjustment current may include a first adjustment current Isink1
  • the current determination module 20 may include a first determination unit 210, and the first determination unit 210 is configured to Determine the first adjustment current.
  • FIG. 3 shows a schematic diagram of a first determining unit according to an embodiment of the present disclosure.
  • the first determining unit may include a first operational amplifier OP1, a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, and a second transistor.
  • the positive input terminal of the first operational amplifier OP1 is used to receive the input voltage Vin, and the negative input terminal of the first operational amplifier OP1 is electrically connected to the source of the first transistor Q1 and the first transistor Q1.
  • the first end of the resistor, the output end of the first operational amplifier OP1 is electrically connected to the gate of the first transistor Q1, and the second end of the first resistor R1 is grounded,
  • the drain of the first transistor Q1 is electrically connected to the source of the second transistor Q2, the gate of the second transistor Q2, and the gate of the third transistor Q3,
  • the drain of the second transistor Q2 and the drain of the third transistor Q3 are used to receive the power supply voltage Vdd,
  • the source of the third transistor Q3 is electrically connected to the source of the fourth transistor Q4, the gate of the fourth transistor Q4, and the gate of the fifth transistor Q5,
  • the source of the fourth transistor Q4 and the source of the fifth transistor Q5 are grounded,
  • the drain of the fifth transistor Q5 is used to output the first adjustment current Isink1.
  • the embodiment of the present disclosure determines the first adjustment current Isink1 in response to the change of the input voltage through the first determination unit to compensate for the change of the input voltage and generate a control signal, which can make the output voltage stable, and when the input voltage changes When, reduce the volatility of the output voltage.
  • the control module can use the first adjustment current to compensate for the change in the input voltage and generate a control signal to adjust the output voltage adaptively, so that the output voltage change fluctuation is small.
  • the adjustment current may further include a second adjustment current Isink2
  • the current determination module 2 may further include a second determination unit
  • the second determination unit is used to determine the second adjustment current
  • the second determination unit may include a current detection subunit 220, a multiplication subunit 230, and a current determination subunit 240, wherein,
  • the current detection subunit 220 is electrically connected to the voltage output module, and is used to detect a load current, and obtain a detection voltage Vctrl according to the load current;
  • the multiplication subunit 230 is electrically connected to the voltage output module and the voltage input module, and is configured to multiply the input voltage Vin and the detection voltage Vctrl to obtain an intermediate voltage;
  • the current determining subunit 240 is electrically connected to the multiplying subunit 230, and is configured to determine the second adjusted current Isink2 according to the intermediate voltage.
  • the embodiment of the present disclosure can control the control signal in response to the change of the input voltage, so that the output voltage is stable.
  • the control can realize the stable output of voltage under different load conditions.
  • the current detection subunit 220 may include a sixth transistor Q6, a seventh transistor Q7, a second operational amplifier OP2, a second resistor R2, and a first capacitor C1, in,
  • the gate of the sixth transistor Q6 is used to receive the control signal, the drain of the sixth transistor Q6 is electrically connected to the voltage input module, and the source of the sixth transistor Q6 is electrically connected to the first The positive input terminal of the second operational amplifier OP2, the drain of the seventh transistor Q7,
  • the negative input terminal of the second operational amplifier OP2 is electrically connected to the voltage output module, the output terminal of the second operational amplifier OP2 is electrically connected to the gate of the seventh transistor Q7, and the seventh transistor Q7
  • the source of is electrically connected to the first end of the second resistor R2 and the first end of the first capacitor C1,
  • the first end of the second resistor R2 is used to output the detection voltage Vctrl.
  • the embodiment of the present disclosure can realize the detection of the load current through the current detection subunit, and determine the detection voltage according to the detected load current, and determine the second adjustment current according to the detection voltage, which can compensate for the change of the load end, In order to realize the control of the control signal based on different load conditions.
  • D represents the duty cycle
  • T represents the clock cycle
  • IL represents the inductance of the input inductor L
  • R represents the resistance of the second resistor R2.
  • the multiplication subunit may include an analog multiplier (Analog Multiple).
  • Analog Multiple An analog multiplier
  • the embodiment of the present disclosure does not limit the implementation of the multiplier, and those skilled in the art can implement it through a dedicated hardware circuit as needed, or use an existing analog multiplication. ⁇ implementation.
  • the implementation manner of the current determining sub-unit 240 can refer to the implementation manner of the first determining unit 210, which will not be repeated here.
  • the embodiments of the present disclosure can achieve a quick response to the input voltage and can provide compensation for different loads. Therefore, the device can adapt to a variety of loads and increase environmental adaptability.
  • the voltage output module 40 may include an eighth transistor Q8, a ninth transistor Q9, a tenth transistor Q10, an eleventh transistor Q11, a third operational amplifier OP3, The third resistor R3, the fourth resistor R4, and the second capacitor C2, among which,
  • the gate of the eighth transistor Q8 is electrically connected to the gate of the sixth transistor Q6, the gate of the tenth transistor Q10 and the control module for receiving the control signal,
  • the drain of the eighth transistor Q8 is electrically connected to the drain of the ninth transistor Q9, the drain of the sixth transistor Q6, the drain of the tenth transistor Q10, and the voltage input module,
  • the source of the eighth transistor Q8 is electrically connected to the negative input terminal of the third operational amplifier OP3, the negative input terminal of the second operational amplifier OP2, the first terminal of the third resistor R3, and all
  • the first end of the second capacitor C2 is electrically connected to the control module and the first end of the fourth resistor R4, and the second end of the fourth resistor R4 is grounded ,
  • the second end of the second capacitor C2 is grounded,
  • the gate of the ninth transistor Q9 is electrically connected to the control module for receiving the control signal, and the source of the ninth transistor Q9 is grounded,
  • the positive input terminal of the third operational amplifier OP3 is electrically connected to the source of the tenth transistor Q10 and the drain of the eleventh transistor Q11, and the output terminal of the third operational amplifier OP3 is electrically connected to the The gate of the eleventh transistor Q11,
  • the source of the eleventh transistor Q11 is electrically connected to the current determination module and the control module,
  • the first end of the third resistor R3 is used to output the target voltage.
  • the voltage output module of the embodiment of the present disclosure can realize voltage output according to the control signal and the input voltage input by the input module, so as to output a stable target voltage.
  • the target voltage can be obtained according to the following formula:
  • Vout Vin/(1-D), where D can represent the duty ratio of the control signal.
  • the present disclosure can quickly respond to changes in the input voltage and output the desired target output voltage.
  • the voltage input module 10 may include an input capacitor Cin and an input inductor L, where:
  • the first end of the input capacitor Cin is electrically connected to the first end of the input inductor L for receiving the input voltage, and the second end of the input capacitor Cin is grounded,
  • the second end of the input inductor L is electrically connected to the drain of the ninth transistor Q9, the drain of the eighth transistor Q8, the drain of the sixth transistor Q6, and the drain of the tenth transistor Q10. pole.
  • the present disclosure takes an input capacitor as an example for description, it should be understood that the present disclosure is not limited to this.
  • the input capacitor can be replaced with an input capacitor composed of multiple capacitors.
  • the network, the input capacitor network may include multiple capacitors, and the present disclosure does not limit the connection relationship and the number thereof.
  • the input inductor L can be set or replaced with multiple inductors, and the multiple inductors can be connected in series, parallel, or a combination of them.
  • the relationship is not limited.
  • control module 30 introduces possible implementations of the control module 30. It should be understood that the following description is exemplary and should not be regarded as a limitation of the present disclosure.
  • the control module 30 may include an error amplifier gm, a reference resistor Rea, a reference capacitor Cea, a comparator CMP, an oscillator (Oscillator), a trigger, a pulse width modulation PWM controller (PWM Control Driver, PWM controller), current source Iramp, reset switch Vreset, capacitor Cramp, sampling resistor Rramp, among them:
  • the positive terminal of the error amplifier gm is electrically connected between the third resistor and the fourth resistor, and is used to input the feedback voltage signal Vfb of the voltage output module 40, the negative terminal is used to input the reference voltage Vref, and the output terminal is electrically connected.
  • the first terminal of the reference resistor Rea and the negative terminal of the comparator CMP Connected to the first terminal of the reference resistor Rea and the negative terminal of the comparator CMP;
  • the second end of the reference resistor Rea is electrically connected to the first end of the reference capacitor Cea, and the second end of the reference capacitor Cea is grounded;
  • the positive terminal of the comparator CMP is electrically connected to the current source Iramp, the first terminal of the capacitor Cramp, and the first terminal of the reset switch for inputting a comparison voltage Vramp, and the output terminal of the comparator CMP is electrically connected to the The first end R of the flip-flop;
  • the output terminal of the current determination module is electrically connected to the second terminal of the reset switch, the second terminal of the capacitor Cramp, and the first terminal of the sampling resistor Rramp, and outputs the first adjustment current Isink1 and/or the second adjustment current Isink2, and the sampling resistor Rramp The second end of is grounded;
  • the second terminal S of the trigger is electrically connected to the output terminal of the oscillator for receiving the clock signal CLK output by the oscillator, and the output terminal Q of the trigger is electrically connected to the output terminal of the PWM controller.
  • the first output terminal of the PWM controller is electrically connected to the gate of the ninth transistor, and the second output terminal is electrically connected to the gate of the eighth transistor, the gate of the tenth transistor, and the gate of the sixth transistor.
  • the trigger may be configured as:
  • the PWM controller may be configured as:
  • the voltage determination module may include a first determination unit and/or a second determination unit.
  • the voltage determining module including the first determining unit
  • Vref remains unchanged
  • the voltage output module 40 can output a stable target voltage .
  • FIG. 4 shows a schematic diagram of voltage changes in a related art DC-DC architecture.
  • FIG. 5 shows a schematic diagram of a voltage change in a voltage adjusting device according to an embodiment of the present disclosure.
  • the fluctuation of the output voltage can be greatly reduced, and the peak-to-peak value of the output voltage is only 30 mV.
  • the current determining module of the embodiment of the present disclosure may further include a second determining unit, and the first adjusting current determined by the first determining unit and the second adjusting current determined by the second determining unit may act together on the control module , So that the control module can not only respond quickly to changes in the input voltage, but also adapt to different load conditions.
  • FIG. 6 shows a schematic diagram of voltage changes in the voltage adjustment device that does not use the second determining unit.
  • FIG. 7 shows a schematic diagram of voltage changes in the voltage adjusting device using the second determining unit.
  • the voltage adjustment device can not only achieve rapid changes in the input voltage In response, it can also provide compensation for different loads. Under different loads, the peak-to-peak value Vpp of the fluctuation range of the output voltage Vout is within 20mV, which improves the environmental adaptability of the device and makes the fastline excitation of the power supply in the TDMA test The performance meets the needs of SPEC and meets the TDMA test requirements of AMOLED in various application environments.
  • control module 30 does not limit the selection of various components of the control module 30 and the selection of the reference voltage, which can be determined by those skilled in the art as required.

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Abstract

一种电压调整装置、芯片、电源及电子设备，该装置包括：电压输入模块（10），用于接收输入电压；电流确定模块（20），电连接于电压输入模块（10），用于根据输入电压及输入电压与相邻的前一时刻的输入电压的变化量确定调整电流；控制模块（30），电连接于电流确定模块（20），用于根据调整电流输出控制信号；电压输出模块（40），电连接于电压输入模块（10）、电流确定模块（20）及控制模块（30），用于根据控制信号及输入电压输出目标电压。根据该电压调整装置，可以输出稳定的目标电压，能够对输入电压的变化快速响应，具有可靠、稳定的特点。

Description

电压调整装置、芯片、电源及电子设备 技术领域
本公开涉及集成电路领域，尤其涉及一种电压调整装置、芯片、电源及电子设备。
背景技术
在AMOLED(Active-matrix organic light-emitting diode，有源矩阵有机发光二极体)的电源驱动管理芯片中，有这样一个TDMA(Time division multiple access，时分复用)测试要求：输入电源每隔一段时间会受到干扰，向上或是向下在10μs内跳动500mV，并且500mV的跳动会持续至少500μs的时间。如果发生这种干扰，那么对于DC-DC的Boost架构的输出一定有overshoot(过冲)或是undershoot(下冲)，要求这种扰动在200mA以内的负载情况下要少于20mV，在1A以内的负载情况下要少于60mV。
然而，相关技术在输入电源出现扰动的情况下，无法快速追踪到变化，常常导致输出电压出现过冲、下冲等扰动，造成输出电压不稳定。
发明内容
有鉴于此，本公开提出了一种电压调整装置，所述装置包括：
电压输入模块，用于接收输入电压；
电流确定模块，电连接于所述电压输入模块，用于根据所述输入电压及所述输入电压与相邻的前一时刻的输入电压的变化量确定调整电流；
控制模块，电连接于所述电流确定模块，用于根据所述调整电流输出控制信号；
电压输出模块，电连接于所述电压输入模块、所述电流确定模块及所述控制模块，用于根据所述控制信号及所述输入电压输出目标电压。
在一种可能的实施方式中，所述调整电流包括第一调整电流，所述电流 确定模块包括第一确定单元，所述第一确定单元用于确定所述第一调整电流，
所述第一确定单元包括第一运算放大器、第一晶体管、第二晶体管、第三晶体管、第四晶体管、第五晶体管、第一电阻，其中，
所述第一运算放大器的正向输入端用于接收所述输入电压，所述第一运算放大器的负向输入端电连接于所述第一晶体管的源极及所述第一电阻的第一端，所述第一运算放大器的输出端电连接于所述第一晶体管的栅极，所述第一电阻的第二端接地，
所述第一晶体管的漏极电连接于所述第二晶体管的源极、所述第二晶体管的栅极及所述第三晶体管的栅极，
所述第二晶体管的漏极及所述第三晶体管的漏极用于接收电源电压，
所述第三晶体管的源极电连接于所述第四晶体管的源极、所述第四晶体管的栅极及所述第五晶体管的栅极，
所述第四晶体管的源极及所述第五晶体管的源极接地，
所述第五晶体管的漏极用于输出所述第一调整电流。
在一种可能的实施方式中，所述调整电流包括第二调整电流，所述电流确定模块包括第二确定单元，所述第二确定单元用于确定所述第二调整电流，所述第二确定单元包括电流检测子单元、乘法子单元、电流确定子单元，其中，
所述电流检测子单元电连接于所述电压输出模块，用于检测负载电流，并根据所述负载电流得到检测电压；
所述乘法子单元，电连接于所述电压输出模块及所述电压输入模块，用于将所述输入电压及所述检测电压进行乘法运算，得到中间电压；
所述电流确定子单元，电连接于所述乘法子单元，用于根据所述中间电压确定所述第二调整电流。
在一种可能的实施方式中，所述电流检测子单元包括第六晶体管、第七晶体管、第二运算放大器、第二电阻、第一电容，其中，
所述第六晶体管的栅极用于接收所述控制信号，所述第六晶体管的漏极 电连接于所述电压输入模块，所述第六晶体管的源极电连接于所述第二运算放大器的正向输入端、所述第七晶体管的漏极，
所述第二运算放大器的负向输入端电连接于所述电压输出模块，所述第二运算放大器的输出端电连接于所述第七晶体管的栅极，所述第七晶体管的源极电连接于所述第二电阻的第一端及所述第一电容的第一端，
所述第二电阻的第二端及所述第一电容的第二端接地，
所述第二电阻的第一端用于输出所述检测电压。
在一种可能的实施方式中，所述电压输出模块包括第八晶体管、第九晶体管、第十晶体管、第十一晶体管、第三运算放大器、第三电阻、第四电阻、第二电容，其中，
所述第八晶体管的栅极电连接于所述第六晶体管的栅极、所述第十晶体管的栅极及所述控制模块，用于接收所述控制信号，
所述第八晶体管的漏极电连接于所述第九晶体管的漏极、所述第六晶体管的漏极、所述第十晶体管的漏极及所述电压输入模块，
所述第八晶体管的源极电连接于所述第三运算放大器的负向输入端、所述第二运算放大器的负向输入端、所述第三电阻的第一端及所述第二电容的第一端，所述第三电阻的第二端电连接于所述控制模块及所述第四电阻的第一端，所述第四电阻的第二端接地，所述第二电容的第二端接地，
所述第九晶体管的栅极电连接于所述控制模块，用于接收所述控制信号，所述第九晶体管的源极接地，
所述第三运算放大器的正向输入端电连接于所述第十晶体管的源极及所述第十一晶体管的漏极，所述第三运算放大器的输出端电连接于所述第十一晶体管的栅极，
所述第十一晶体管的源极电连接于所述电流确定模块及所述控制模块，
所述第三电阻的第一端用于输出所述目标电压。
在一种可能的实施方式中，所述电压输入模块包括输入电容、输入电感，其中，
所述输入电容的第一端电连接于所述输入电感的第一端，用于接收所述输入电压，所述输入电容的第二端接地，
所述输入电感的第二端电连接于所述第九晶体管的漏极、所述第八晶体管的漏极、所述第六晶体管的漏极、所述第十晶体管的漏极。
根据本公开的一方面，提供了一种芯片，所述芯片包括：
所述的电压调整装置。
根据本公开的一方面，提供了一种电源，所述电源包括：
所述的芯片。
根据本公开的一方面，提供了一种电子设备，所述电子设备包括：
所述的电源。
在一种可能的实现方式中，所述电子设备包括显示器、智能手机或便携设备。
通过以上装置，本公开实施例利用电流确定模块根据所述输入电压及所述输入电压与相邻的前一时刻的输入电压的变化量确定调整电流，只要输入电压有变化，电流确定模块可以快速响应，将调整电流输出到控制模块，以产生控制信号，电压输出模块根据控制信号，可对输出稳定的目标电压，不会出现过量的过冲、下冲现象。根据本公开提出的电压调整装置，可以输出稳定的目标电压，能够对输入电压的变化快速响应，具有可靠、稳定的特点。
根据下面参考附图对示例性实施例的详细说明，本公开的其它特征及方面将变得清楚。
附图说明
包含在说明书中并且构成说明书的一部分的附图与说明书一起示出了本公开的示例性实施例、特征和方面，并且用于解释本公开的原理。
图1示出了根据本公开一实施方式的电压调整装置的示意图。
图2示出了根据本公开一实施方式的电压调整装置的示意图。
图3示出了根据本公开一实施方式的第一确定单元的示意图。
图4示出了相关技术的DC-DC架构中电压变化示意图。
图5示出了根据本公开一实施方式的电压调整装置中电压变化示意图。
图6示出了未采用第二确定单元的电压调整装置中电压变化示意图。
图7示出了采用第二确定单元的电压调整装置中电压变化示意图。
具体实施方式
以下将参考附图详细说明本公开的各种示例性实施例、特征和方面。附图中相同的附图标记表示功能相同或相似的元件。尽管在附图中示出了实施例的各种方面，但是除非特别指出，不必按比例绘制附图。
在这里专用的词“示例性”意为“用作例子、实施例或说明性”。这里作为“示例性”所说明的任何实施例不必解释为优于或好于其它实施例。
另外，为了更好的说明本公开，在下文的具体实施方式中给出了众多的具体细节。本领域技术人员应当理解，没有某些具体细节，本公开同样可以实施。在一些实例中，对于本领域技术人员熟知的方法、手段、元件和电路未作详细描述，以便于凸显本公开的主旨。
请参阅图1，图1示出了根据本公开一实施方式的电压调整装置的示意图。
如图1所示，所述装置包括：
电压输入模块10，用于接收输入电压；
电流确定模块20，电连接于所述电压输入模块10，用于根据所述输入电压及所述输入电压与相邻的前一时刻的输入电压的变化量确定调整电流；
控制模块30，电连接于所述电流确定模块20，用于根据所述调整电流输出控制信号；
电压输出模块40，电连接于所述电压输入模块10、所述电流确定模块20及所述控制模块30，用于根据所述控制信号及所述输入电压输出目标电压。
通过以上装置，本公开实施例利用电流确定模块根据所述输入电压及所 述输入电压与相邻的前一时刻的输入电压的变化量确定调整电流，只要输入电压有变化，电流确定模块可以快速响应，将调整电流输出到控制模块，以产生控制信号，电压输出模块根据控制信号，可对输出稳定的目标电压，不会出现过量的过冲、下冲现象。根据本公开提出的电压调整装置，可以输出稳定的目标电压，能够对输入电压的变化快速响应，具有可靠、稳定的特点。
本公开提出的电压调整装置，可以包括DC-DC转换电路(直流-直流转换电路)，可以根据输入的直流电压输出稳定、可靠的目标电压。
请参阅图2，图2示出了根据本公开一实施方式的电压调整装置的示意图。
在一种可能的实施方式中，如图2所示，所述调整电流可以包括第一调整电流Isink1，所述电流确定模块20可以包括第一确定单元210，所述第一确定单元210用于确定所述第一调整电流。
请一并参阅图3，图3示出了根据本公开一实施方式的第一确定单元的示意图。
在一种可能的实施方式中，如图3所示，所述第一确定单元可以包括第一运算放大器OP1、第一晶体管Q1、第二晶体管Q2、第三晶体管Q3、第四晶体管Q4、第五晶体管Q5、第一电阻R1，其中，
所述第一运算放大器OP1的正向输入端用于接收所述输入电压Vin，所述第一运算放大器OP1的负向输入端电连接于所述第一晶体管Q1的源极及所述第一电阻的第一端，所述第一运算放大器OP1的输出端电连接于所述第一晶体管Q1的栅极，所述第一电阻R1的第二端接地，
所述第一晶体管Q1的漏极电连接于所述第二晶体管Q2的源极、所述第二晶体管Q2的栅极及所述第三晶体管Q3的栅极，
所述第二晶体管Q2的漏极及所述第三晶体管Q3的漏极用于接收电源电压Vdd，
所述第三晶体管Q3的源极电连接于所述第四晶体管Q4的源极、所述第四晶体管Q4的栅极及所述第五晶体管Q5的栅极，
所述第四晶体管Q4的源极及所述第五晶体管Q5的源极接地，
所述第五晶体管Q5的漏极用于输出所述第一调整电流Isink1。
通过以上装置，本公开实施例通过第一确定单元响应于输入电压的变化确定第一调整电流Isink1，以对输入电压的变化进行补偿，并产生控制信号，可以使得输出电压稳定，在输入电压变化时，降低输出电压的波动性。
在一个示例中，当Vin变化了△Vin的变量，当Vin输入第一确定单元时，可以通过第一确定单元确定第一调整电流Isink1的变化△Isink1＝gm1*△Vin，其中，gm1表示根据预先确定的调整参数，Vin表示输入电压，“*”表示乘法操作。
这样，当将第一调整电流输入到控制模块时，控制模块可以利用第一调整电流补偿输入电压的变化，并产生控制信号，以适应性调整输出电压的大小，从而使得输出电压变化波动小。
应该说明的是，本公开实施例对gm1的具体大小不做限定，本领域技术人员可以根据需要通过仿真模拟的方式确定。
请继续参阅图2，在一种可能的实施方式中，如图2所示，所述调整电流还可以包括第二调整电流Isink2，所述电流确定模块2还可以包括第二确定单元，所述第二确定单元用于确定所述第二调整电流，所述第二确定单元可以包括电流检测子单元220、乘法子单元230、电流确定子单元240，其中，
所述电流检测子单元220电连接于所述电压输出模块，用于检测负载电流，并根据所述负载电流得到检测电压Vctrl；
所述乘法子单元230，电连接于所述电压输出模块及所述电压输入模块，用于将所述输入电压Vin及所述检测电压Vctrl进行乘法运算，得到中间电压；
所述电流确定子单元240，电连接于所述乘法子单元230，用于根据所述中间电压确定所述第二调整电流Isink2。
通过以上装置，本公开实施例可以响应于输入电压的变化，对控制信号进行控制，以使得输出电压稳定，并且，通过结合电流检测子单元检测负载电流得到的检测电压及输入电压，对控制信号进行控制，可以实现在不同负载情况下，均能实现电压的稳定输出。
在一种可能的实施方式中，如图2所示，所述电流检测子单元220可以包括第六晶体管Q6、第七晶体管Q7、第二运算放大器OP2、第二电阻R2、第一电容C1，其中，
所述第六晶体管Q6的栅极用于接收所述控制信号，所述第六晶体管Q6的漏极电连接于所述电压输入模块，所述第六晶体管Q6的源极电连接于所述第二运算放大器OP2的正向输入端、所述第七晶体管Q7的漏极，
所述第二运算放大器OP2的负向输入端电连接于所述电压输出模块，所述第二运算放大器OP2的输出端电连接于所述第七晶体管Q7的栅极，所述第七晶体管Q7的源极电连接于所述第二电阻R2的第一端及所述第一电容C1的第一端，
所述第二电阻R2的第二端及所述第一电容C1的第二端接地，
所述第二电阻R2的第一端用于输出所述检测电压Vctrl。
通过以上装置，本公开实施例可以通过电流检测子单元实现对负载电流的检测，并根据检测得到的负载电流确定检测电压，并根据检测电压确定第二调整电流，可以对负载端的变化进行补偿，以实现基于不同负载情况实现对控制信号的控制。
在一个示例中，在检测中，电流检测子单元可以对第八晶体管的电流在(1-D)T*IL做平均化处理，从而得到检测电压Vtrcl＝(1-D)T*IL*R，其中，D表示占空比，T表示时钟周期，IL表示输入电感L的电感，R表示第二电阻R2的阻值。
电流检测子单元可以将负载电流的数值转换为检测电压Vctrl＝α*Id，其中，α表示预设参数，Id表示负载电流。
在一个示例中乘法子单元可以包括模拟乘法器(Analog Multiple)，本公开实施例对乘法器的实现方式不做限定，本领域技术人员可以根据需要通过专用硬件电路实现，或采用现有模拟乘法器实现。
乘法子单元输出的中间电压Vmul＝β*Vctrl*Vin＝α*β*Id*Vin，其中，β表示预设乘法参数。
在一个示例中，电流确定子单元240输出第二调整电流Isink2＝gm2*Vmul＝gm2*α*β*Id*Vin，其中，gm2为电流确定子单元的预设参数。
在一个示例中，电流确定模块20输出的调整电流的变化可以表示为△Isink＝△Isink1+△Isink2＝gm1*△Vin+gm2*α*β*Id*Vin＝(gm1+gm2*α*β*Id)*Vin。
其中，电流确定子单元240的实现方式可以参考第一确定单元210的实现方式，在此不再赘述。
通过以上装置，本公开实施例可以实现对输入电压的快速响应，且能够针对不同负载提供补偿，因此，该装置可以适应多种负载，增加了环境适应性。
在一种可能的实施方式中，如图2所示，所述电压输出模块40可以包括第八晶体管Q8、第九晶体管Q9、第十晶体管Q10、第十一晶体管Q11、第三运算放大器OP3、第三电阻R3、第四电阻R4、第二电容C2，其中，
所述第八晶体管Q8的栅极电连接于所述第六晶体管Q6的栅极、所述第十晶体管Q10的栅极及所述控制模块，用于接收所述控制信号，
所述第八晶体管Q8的漏极电连接于所述第九晶体管Q9的漏极、所述第六晶体管Q6的漏极、所述第十晶体管Q10的漏极及所述电压输入模块，
所述第八晶体管Q8的源极电连接于所述第三运算放大器OP3的负向输入端、所述第二运算放大器OP2的负向输入端、所述第三电阻R3的第一端及所述第二电容C2的第一端，所述第三电阻R3的第二端电连接于所述控制模块及所述第四电阻R4的第一端，所述第四电阻R4的第二端接地，所述第二电容C2的第二端接地，
所述第九晶体管Q9的栅极电连接于所述控制模块，用于接收所述控制信号，所述第九晶体管Q9的源极接地，
所述第三运算放大器OP3的正向输入端电连接于所述第十晶体管Q10的源极及所述第十一晶体管Q11的漏极，所述第三运算放大器OP3的输出端电 连接于所述第十一晶体管Q11的栅极，
所述第十一晶体管Q11的源极电连接于所述电流确定模块及所述控制模块，
所述第三电阻R3的第一端用于输出所述目标电压。
通过以上装置，本公开实施例的电压输出模块可以根据控制信号及输入模块传入的输入电压实现电压输出，以输出稳定的目标电压。
在一种可能的实施方式中，可以根据如下公式得到目标电压：
Vout＝Vin/(1-D)，其中，D可以表示控制信号的占空比。
因此，通过调整控制信号的占空比，本公开可以快速响应于输入电压的变化，输出需要的目标输出电压。
下面对电压输入模块10的可能实现方式进行介绍，应该明白的是，以下描述是示例性的，不应视为是对本公开的限制。
在一种可能的实施方式中，如图2所示，所述电压输入模块10可以包括输入电容Cin、输入电感L，其中，
所述输入电容Cin的第一端电连接于所述输入电感L的第一端，用于接收所述输入电压，所述输入电容Cin的第二端接地，
所述输入电感L的第二端电连接于所述第九晶体管Q9的漏极、所述第八晶体管Q8的漏极、所述第六晶体管Q6的漏极、所述第十晶体管Q10的漏极。
应该说明的是，本公开虽然以输入电容为例进行了说明，但是，应该明白的是，本公开不限于此，在其他的实施方式中，输入电容可以被替换为多个电容组成的输入电容网络，输入电容网络可以包括多个电容，本公开对其连接关系及数量不做限制。
在一种可能的实施方式中，输入电感L可以被设置或替换为多个电感，多个电感的连接方式可以是串联、并联或者他们的组合，本公开对输入电感L包括的电感数目、连接关系不做限定。
下面对控制模块30的可能实现方式进行介绍，应该明白的是，以下描述是示例性的，不应视为是对本公开的限制。
在一种可能的实施方式中，如图2所示，所述控制模块30可以包括误差放大器gm、参考电阻Rea、参考电容Cea、比较器CMP、振荡器(Oscillator)、触发器、脉冲宽度调制PWM控制器(PWM Control Driver，PWM控制器)、电流源Iramp、重置开关Vreset、电容Cramp、采样电阻Rramp，其中：
所述误差放大器gm的正极端电连接于所述第三电阻和第四电阻之间，用于输入所述电压输出模块40的反馈电压信号Vfb，负极端用于输入参考电压Vref，输出端电连接于所述参考电阻Rea的第一端及所述比较器CMP的负极端；
所述参考电阻Rea的第二端电连接于所述参考电容Cea的第一端，所述参考电容Cea的第二端接地；
所述比较器CMP的正极端电连接于电流源Iramp、电容Cramp的第一端、重置开关的第一端，用于输入比较电压Vramp，所述比较器CMP的输出端电连接于所述触发器的第一端R；
电流确定模块的输出端电连接到重置开关的第二端、电容Cramp的第二端及采样电阻Rramp的第一端，输出第一调整电流Isink1和/或第二调整电流Isink2，采样电阻Rramp的第二端接地；
所述触发器的第二端S电连接于所述振荡器的输出端，用于接收所述振荡器输出的时钟信号CLK，所述触发器的输出端Q电连接于所述PWM控制器的输入端；
所述PWM控制器的第一输出端电连接于第九晶体管的栅极，第二输出端电连接于所述第八晶体管的栅极、第十晶体管的栅极、第六晶体管的栅极。
在一种可能的实施方式中，所述触发器可以被配置为：
当第一端R输入为高电平(1)时，输出端Q输出为1；
当第二端S输入为高电平时，输出端Q输出为0。
在一种可能的实施方式中，所述PWM控制器可以被配置为：
输入端输入为1时，输出为1；
输入端输入为0时，输出为0。
本公开实施例中，电压确定模块可以包括第一确定单元和/或第二确定单元。
对于电压确定模块包括第一确定单元，在一种可能的实施方式中，在输入电压增大的情况下，例如，当Vin变化了△Vin的变量，当Vin输入第一确定单元时，可以通过第一确定单元确定第一调整电流Isink1的变化为△Isink1＝gm1*△Vin，这样，Vramp的初始电平就变化了gm1*△Vin*Rramp的分量，用此变化来保证Vea的输出尽量没有变化，在Vref保持不变的情况下，这就意味着Vfb变化量小，即△Vout的变化小，从而减小输出电压的波动，通过这样的方式，电压输出模块40可以输出稳定的目标电压。
请参阅图4，图4示出了相关技术的DC-DC架构中电压变化示意图。
请参阅图5，图5示出了根据本公开一实施方式的电压调整装置中电压变化示意图。
如图4所示，相关技术中当输入电压Vin变化时，电压输出Vout的变化作用于误差放大器gm会对Vea产生影响，当Vea变化越大，通过环路调节新的占空比D就越慢，因此输出随着输入电压向上或者是向下跳动的输出电压就会很大，在这种情况下，输出电压Vout的峰峰值可以达到130mV。
如图5所示，通过本公开实施例中第一确定单元确定第一调整电流以对控制模块进行控制，可以使得输出电压的波动大幅减小，输出电压的峰峰值仅为30mV。
可以看到此方案可以很好的响应输入电压的变化，输出电压的变化的峰峰值Vpp从130mV降到了30mV。
为了适应负载的变化，本公开实施例的电流确定模块还可以进一步包括第二确定单元，第一确定单元确定的第一调整电流和第二确定单元确定的第二调整电流可以共同作用于控制模块，使得控制模块既可以对输入电压的变化快速响应，也可以适应不同负载情况。
请参阅图6，图6示出了未采用第二确定单元的电压调整装置中电压变化示意图。
请参阅图7，图7示出了采用第二确定单元的电压调整装置中电压变化示意图。
如图6所示，由于第一确定单元中确定gm1时，需要提前根据设定负载大小，那么在平衡点是在轻重负载之间选取，对于过轻或是过重的负载来说补偿往往不够或是溢出，因此，当图6没有采用第二确定单元对负载电流进行检测时，电压调整装置无法适应负载的变化，负载变化(图6中的负载电流Id)时，输出电压的变化△Vout的峰峰值具有较大的波动。
如图7所示，通过设置第一确定单元快速响应输入电压的变化确定第一调整电流，并设置第二确定单元对负载电流进行检测和补偿，电压调整装置不仅能够实现对输入电压变化的快速响应，还能够针对不同的负载提供补偿，在不同的负载下，输出电压Vout的波动区间的峰峰值Vpp在20mV之内，从而提高了装置的环境适应性，使得对于TDMA测试中电源的fastline激励的表现满足SPEC的需要，满足各种应用环境下AMOLED的TDMA测试要求。
应该明白的是，本公开对控制模块30各个元器件的选择、参考电压的选择不做限定，本领域技术人员可以根据需要确定。
以上已经描述了本公开的各实施例，上述说明是示例性的，并非穷尽性的，并且也不限于所披露的各实施例。在不偏离所说明的各实施例的范围和精神的情况下，对于本技术领域的普通技术人员来说许多修改和变更都是显而易见的。本文中所用术语的选择，旨在最好地解释各实施例的原理、实际应用或对市场中的技术的改进，或者使本技术领域的其它普通技术人员能理解本文披露的各实施例。

Claims (10)

  1. 一种电压调整装置，其特征在于，所述装置包括：
    电压输入模块，用于接收输入电压；
    电流确定模块，电连接于所述电压输入模块，用于根据所述输入电压及所述输入电压与相邻的前一时刻的输入电压的变化量确定调整电流；
    控制模块，电连接于所述电流确定模块，用于根据所述调整电流输出控制信号；
    电压输出模块，电连接于所述电压输入模块、所述电流确定模块及所述控制模块，用于根据所述控制信号及所述输入电压输出目标电压。
  2. 根据权利要求1所述的装置，其特征在于，所述调整电流包括第一调整电流，所述电流确定模块包括第一确定单元，所述第一确定单元用于确定所述第一调整电流，
    所述第一确定单元包括第一运算放大器、第一晶体管、第二晶体管、第三晶体管、第四晶体管、第五晶体管、第一电阻，其中，
    所述第一运算放大器的正向输入端用于接收所述输入电压，所述第一运算放大器的负向输入端电连接于所述第一晶体管的源极及所述第一电阻的第一端，所述第一运算放大器的输出端电连接于所述第一晶体管的栅极，所述第一电阻的第二端接地，
    所述第一晶体管的漏极电连接于所述第二晶体管的源极、所述第二晶体管的栅极及所述第三晶体管的栅极，
    所述第二晶体管的漏极及所述第三晶体管的漏极用于接收电源电压，
    所述第三晶体管的源极电连接于所述第四晶体管的源极、所述第四晶体管的栅极及所述第五晶体管的栅极，
    所述第四晶体管的源极及所述第五晶体管的源极接地，
    所述第五晶体管的漏极用于输出所述第一调整电流。
  3. 根据权利要求1或2所述的装置，其特征在于，所述调整电流包括第二调整电流，所述电流确定模块包括第二确定单元，所述第二确定单元用于确定所述第二调整电流，所述第二确定单元包括电流检测子单元、乘法子单元、 电流确定子单元，其中，
    所述电流检测子单元电连接于所述电压输出模块，用于检测负载电流，并根据所述负载电流得到检测电压；
    所述乘法子单元，电连接于所述电压输出模块及所述电压输入模块，用于将所述输入电压及所述检测电压进行乘法运算，得到中间电压；
    所述电流确定子单元，电连接于所述乘法子单元，用于根据所述中间电压确定所述第二调整电流。
  4. 根据权利要求1所述的装置，其特征在于，所述电流检测子单元包括第六晶体管、第七晶体管、第二运算放大器、第二电阻、第一电容，其中，
    所述第六晶体管的栅极用于接收所述控制信号，所述第六晶体管的漏极电连接于所述电压输入模块，所述第六晶体管的源极电连接于所述第二运算放大器的正向输入端、所述第七晶体管的漏极，
    所述第二运算放大器的负向输入端电连接于所述电压输出模块，所述第二运算放大器的输出端电连接于所述第七晶体管的栅极，所述第七晶体管的源极电连接于所述第二电阻的第一端及所述第一电容的第一端，
    所述第二电阻的第二端及所述第一电容的第二端接地，
    所述第二电阻的第一端用于输出所述检测电压。
  5. 根据权利要求4所述的装置，其特征在于，所述电压输出模块包括第八晶体管、第九晶体管、第十晶体管、第十一晶体管、第三运算放大器、第三电阻、第四电阻、第二电容，其中，
    所述第八晶体管的栅极电连接于所述第六晶体管的栅极、所述第十晶体管的栅极及所述控制模块，用于接收所述控制信号，
    所述第八晶体管的漏极电连接于所述第九晶体管的漏极、所述第六晶体管的漏极、所述第十晶体管的漏极及所述电压输入模块，
    所述第八晶体管的源极电连接于所述第三运算放大器的负向输入端、所述第二运算放大器的负向输入端、所述第三电阻的第一端及所述第二电容的第一端，所述第三电阻的第二端电连接于所述控制模块及所述第四电阻的第 一端，所述第四电阻的第二端接地，所述第二电容的第二端接地，
    所述第九晶体管的栅极电连接于所述控制模块，用于接收所述控制信号，所述第九晶体管的源极接地，
    所述第三运算放大器的正向输入端电连接于所述第十晶体管的源极及所述第十一晶体管的漏极，所述第三运算放大器的输出端电连接于所述第十一晶体管的栅极，
    所述第十一晶体管的源极电连接于所述电流确定模块及所述控制模块，
    所述第三电阻的第一端用于输出所述目标电压。
  6. 根据权利要求5所述的装置，其特征在于，所述电压输入模块包括输入电容、输入电感，其中，
    所述输入电容的第一端电连接于所述输入电感的第一端，用于接收所述输入电压，所述输入电容的第二端接地，
    所述输入电感的第二端电连接于所述第九晶体管的漏极、所述第八晶体管的漏极、所述第六晶体管的漏极、所述第十晶体管的漏极。
  7. 一种芯片，其特征在于，所述芯片包括：
    如权利要求1-6任一项所述的电压调整装置。
  8. 一种电源，其特征在于，所述电源包括：
    如权利要求7所述的芯片。
  9. 一种电子设备，其特征在于，所述电子设备包括：
    如权利要求8所述的电源。
  10. 根据权利要求9所述的电子设备，其特征在于，所述电子设备包括显示器、智能手机或便携设备。
PCT/CN2021/091044 2020-05-29 2021-04-29 电压调整装置、芯片、电源及电子设备 WO2021238571A1 (zh)

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