WO2013009122A2 - Dispositif d'alimentation à découpage comprenant un circuit de compensation d'inclinaison - Google Patents

Dispositif d'alimentation à découpage comprenant un circuit de compensation d'inclinaison Download PDF

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Publication number
WO2013009122A2
WO2013009122A2 PCT/KR2012/005569 KR2012005569W WO2013009122A2 WO 2013009122 A2 WO2013009122 A2 WO 2013009122A2 KR 2012005569 W KR2012005569 W KR 2012005569W WO 2013009122 A2 WO2013009122 A2 WO 2013009122A2
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WO
WIPO (PCT)
Prior art keywords
duty ratio
voltage
power supply
current
tilt
Prior art date
Application number
PCT/KR2012/005569
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English (en)
Korean (ko)
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WO2013009122A3 (fr
Inventor
김영식
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(주)제퍼로직
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Publication of WO2013009122A2 publication Critical patent/WO2013009122A2/fr
Publication of WO2013009122A3 publication Critical patent/WO2013009122A3/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—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
    • H02M3/22—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
    • 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

Definitions

  • the present invention relates to a power supply device, and more particularly, to a circuit for improving system stability of a power supply device using a switching element.
  • the switching mode power supply device is an on / off time of the first switching device, and refers to a device that outputs a specific voltage by adjusting the amount of energy stored and released in the magnet device (inductor).
  • 1 is a schematic circuit diagram of a general current switching mode power supply. 1 illustrates an example of a device for boosting an output voltage among switching mode power supplies. In order to easily describe the present invention, a description will be made based on a step up (boost) device, but the present invention can be applied to all similar devices other than the boosting device.
  • boost step up
  • the switching mode power supply device includes an inductor 101 that stores energy, a first switching device 102 and a second switching device 103 as shown in FIG. 1, and a control circuit for controlling the switching mode power supply.
  • the control circuit receives a signal from the output voltage Vc of the error amplifier 109 that receives the output voltage and amplifies the difference between the reference voltage VBG and the signal of the device 106 that senses the output current, and the slope compensation 107. And a device for adjusting the on / off time of the first switch 102 by comparing the signals passing through the circuit (108).
  • This method is called current mode or peak current method.
  • the current method has a feature that a power supply responds quickly to an input voltage or a load change, and thus is more widely used than a voltage feedback method.
  • the current method there is a problem in that the system becomes unstable when the ratio of the turn-on time and the turn-off time of the first switch, that is, the duty ratio is 50% or more.
  • FIG. 2 is a graph illustrating a current flowing through an inductor of the power supply of FIG. 1 and a current when a disturbance occurs. 2 illustrates a current flowing through the inductor when the first switch is turned on / off.
  • Vc error amplifier's output
  • m such as 2 degrees (c)
  • c the error amplifier's output
  • Equation (1) the size of the disturbance is shown in Equation (1).
  • the slope compensation value assumes the worst case, that is, the maximum duty ratio operation and applies the value to the total duty ratio, the compensation is also excessively compensated for the operation under the maximum duty ratio.
  • the switching mode of the current mode includes a slope compensation circuit capable of maintaining fast response characteristics even at a low duty ratio by performing effective slope compensation according to the switching duty ratio. It is an object to provide a power supply.
  • the tilt compensation circuit of the switching mode power supply apparatus including the tilt compensation circuit according to the present invention includes a duty ratio detection unit, and a tilt adjustment unit.
  • the duty ratio detector detects the switching duty ratio of the switching mode power supply device, and the higher the detected duty ratio, the more the tilt compensation is performed.
  • the switching mode power supply in the current mode can maintain a quick response even at a low duty ratio.
  • the inclination adjustment unit may perform inclination adjustment only at or above a preset duty ratio.
  • the slope compensation circuit includes a duty ratio voltage generator for generating a duty ratio voltage that changes according to the duty ratio, and a duty ratio current generator for generating a duty ratio current that varies according to the voltage generated by the duty ratio voltage generator.
  • the duty ratio voltage may be implemented to change linearly according to the duty ratio.
  • the current mode switching mode power supply can maintain a quick response even at a low duty ratio.
  • FIG. 1 is a schematic circuit diagram of a typical current mode switching mode power supply.
  • FIG. 2 is a graph showing a current flowing through an inductor of the power supply of FIG. 1 and a current when a disturbance occurs.
  • FIG. 3 is a schematic block diagram of one embodiment of a slope compensation circuit included in a switched mode power supply according to the present invention
  • FIG. 4 is a block diagram illustrating an actual implementation of the tilt compensation circuit of FIG.
  • FIG. 5 is a circuit diagram of the pulse width-to-voltage converter of FIG. 3.
  • FIG. 6 is another circuit diagram implementing the pulse width-to-voltage converter of FIG. 3.
  • FIG. 6 is another circuit diagram implementing the pulse width-to-voltage converter of FIG. 3.
  • FIG. 7 is a circuit diagram implementing the integrator and voltage-to-current converter of FIG.
  • FIG. 8 is another block diagram illustrating an actual implementation of the tilt compensation circuit of FIG. 3.
  • FIG. 8 is another block diagram illustrating an actual implementation of the tilt compensation circuit of FIG. 3.
  • FIG. 3 is a schematic block diagram of an embodiment of a slope compensation circuit included in a switched mode power supply according to the present invention.
  • the tilt compensation circuit 200 includes a duty ratio detector 210 and a tilt adjuster 260.
  • the duty ratio detector 210 detects a switching duty ratio of the switching mode power supply device.
  • the tilt controller 260 performs more tilt compensation as the detected duty ratio is higher.
  • the switching mode power supply in the current mode can maintain a quick response even at a low duty ratio.
  • the inclination controller 260 may continuously increase the degree of inclination adjustment as the duty ratio increases, and may perform the inclination adjustment operation only at or above a preset duty ratio.
  • the preset duty ratio is a preset duty ratio set by the device manufacturer or the like, which is generally 50%.
  • the two configurations it may be possible to continuously perform the tilt adjustment in accordance with the increase in the duty ratio only above the preset duty ratio.
  • the duty ratio detector 210 and the tilt controller 260 may be implemented in various forms in actual implementation. For example, two components may be implemented in one device or one component may be implemented in two or more devices. May be
  • a duty ratio voltage generator that generates a duty ratio voltage that varies according to the duty ratio
  • a duty ratio current generator that generates a duty ratio current that varies according to the voltage generated by the duty ratio voltage generator 210. It may be implemented as. In this case, the duty ratio voltage may be implemented to change linearly according to the duty ratio.
  • the slope compensating circuit 200 includes a device 210 for converting a duty ratio into a voltage, an integrator 240 for integrating the voltage, and a converter 280 for converting the integrated voltage into a current waveform. .
  • the signal converted into the current outputs the compensated voltage V sl through the summer 110 together with the signal 106 detecting the output current.
  • the device 210 for converting the duty ratio into a voltage has an output in which the voltage increases linearly with the duty ratio. Therefore, a compensation voltage according to the duty ratio can be obtained.
  • the output voltage passing through the integrator 240 is characterized by a linear increase in slope as the duty ratio increases, a waveform having a higher slope at a high duty ratio and a lower slope at a low duty ratio can be obtained. .
  • FIG. 5 is a circuit diagram of the pulse width-to-voltage converter of FIG. 3.
  • a circuit is shown for transforming the duty ratio to voltage.
  • This circuit consists of a first current source 211, a second current source 212, switches 213 and 214 that control one and two current sources, and an integrator 215.
  • FIG. 6 is another circuit diagram of the pulse width-to-voltage converter of FIG. 3. 6 shows another example of a circuit for converting a duty ratio into a voltage.
  • the basic configuration is the same as the sawtooth generator.
  • the sawtooth generator charges the current of the current source 221 to the capacitor 222 during a period of high PWM to linearly increase the out voltage, and switches (224, 225) in a period of low PWM. Discharged completely.
  • the output waveform of this circuit outputs a voltage that increases linearly with the duty ratio of PWM as shown in Fig. 5 (b).
  • FIG. 7 is a circuit diagram of an integrator and a voltage-to-current converter of FIG. 4. 7 illustrates a specific example of the integrator 240 and the voltage-to-current converter 280 proposed in the present invention.
  • the integrator 240 converts the voltage input from the input terminal IN to the current I1 of VIN / R1 through the OP-AMP 241. This converted current I1 is mirrored via current mirror 243 (I2) and charged to capacitor 245.
  • the VA voltage is a value obtained by integrating Vin (t) / (R1 * C).
  • the input voltage Vin is given as a linear value according to the duty ratio, that is, a * Ton
  • the slope of the VA voltage is given as A * Ton / (R1 * C), so that the slope becomes linear as the duty ratio increases. Has an increasing form.
  • FIG. 8 is another block diagram illustrating an actual implementation of the tilt compensation circuit of FIG. 3. Unlike in FIG. 4, the circuit of FIG. 8 senses the output of the circuit 210 for converting the duty ratio into a voltage and turns off the switch 290 connected to the compensation circuit when the duty ratio is 50% or less based on 50%. It does not compensate for, but includes a device for compensating the ON (ON) of the switch (290) only at 50% or more.
  • the present invention relates to a switching mode power supply for converting direct current (DC-DC) or alternating current (AC-DC) using a switching element.
  • the present invention discloses a device for predicting the duty ratio, a device for compensating the current gradient of inductance according to the duty ratio, and a device for applying a compensation circuit when the duty ratio is 50% or more.
  • the slope compensation circuit is a first switch control device of a switching mode power supply for converting a power source using an inductor and a first switch second switch, and feedbacks a current flowing through the first switch and an output voltage.
  • the current feedback device includes a device for compensating a current feedback output value.
  • the device for compensating the current feedback output value may be composed of a device for converting a duty ratio into a voltage, an integrator and a device for converting a voltage into a current.
  • the device for compensating the current feedback output value has a characteristic in which the slope of the output value increases linearly with the duty ratio, and the device for converting the duty ratio into a voltage has a feature that the voltage increases linearly with the duty ratio.
  • the device for compensating the current feedback output value may include a device for detecting a specific duty ratio and connecting a compensation circuit when the specific duty ratio is greater than or equal to the specific duty ratio.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un dispositif d'alimentation à découpage comprenant un circuit de compensation d'inclinaison. Le circuit de compensation d'inclinaison comprend une portion de détection de rapport cyclique et une portion de réglage d'inclinaison. La portion de détection de rapport cyclique détecte un rapport cyclique de commutation du dispositif d'alimentation à découpage, et la portion de réglage d'inclinaison effectue une compensation d'inclinaison complémentaire lorsque le rapport cyclique détecté est élevé. Ainsi, le dispositif d'alimentation à découpage en mode courant peut conserver une capacité de réponse rapide, même avec un faible rapport cyclique, grâce à la mise en œuvre de différentes compensations d'inclinaison en fonction du rapport cyclique de commutation.
PCT/KR2012/005569 2011-07-14 2012-07-13 Dispositif d'alimentation à découpage comprenant un circuit de compensation d'inclinaison WO2013009122A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2011-0069982 2011-07-14
KR20110069982 2011-07-14

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WO2013009122A2 true WO2013009122A2 (fr) 2013-01-17
WO2013009122A3 WO2013009122A3 (fr) 2013-04-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9934376B1 (en) 2014-12-29 2018-04-03 Fireeye, Inc. Malware detection appliance architecture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10734885B2 (en) * 2018-06-19 2020-08-04 Cirrus Logic, Inc. Removal of near DC errors in a peak-controlled boost converter using a low-bandwidth secondary control loop

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7265530B1 (en) * 2003-11-07 2007-09-04 National Semiconductor Corporation Adaptive slope compensation for switching regulators
US20090001943A1 (en) * 2007-06-26 2009-01-01 Yaron Slezak Current mode boost converter using slope compensation
US7656142B2 (en) * 2005-07-14 2010-02-02 Linear Technology Corporation Switching regulator with variable slope compensation
US7733671B2 (en) * 2006-06-23 2010-06-08 Mediatek Inc. Switching regulators
US20110115458A1 (en) * 2009-09-18 2011-05-19 Schafmeister Frank Digital slope compensation for current mode control

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5386801B2 (ja) * 2007-07-27 2014-01-15 株式会社リコー スイッチングレギュレータ及びその動作制御方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7265530B1 (en) * 2003-11-07 2007-09-04 National Semiconductor Corporation Adaptive slope compensation for switching regulators
US7656142B2 (en) * 2005-07-14 2010-02-02 Linear Technology Corporation Switching regulator with variable slope compensation
US7733671B2 (en) * 2006-06-23 2010-06-08 Mediatek Inc. Switching regulators
US20090001943A1 (en) * 2007-06-26 2009-01-01 Yaron Slezak Current mode boost converter using slope compensation
US20110115458A1 (en) * 2009-09-18 2011-05-19 Schafmeister Frank Digital slope compensation for current mode control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9934376B1 (en) 2014-12-29 2018-04-03 Fireeye, Inc. Malware detection appliance architecture
US10528726B1 (en) 2014-12-29 2020-01-07 Fireeye, Inc. Microvisor-based malware detection appliance architecture

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KR20130009674A (ko) 2013-01-23
WO2013009122A3 (fr) 2013-04-11
KR101394320B1 (ko) 2014-05-13

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