WO2008053850A1 - Circuit de commande d'alimentation électrique - Google Patents
Circuit de commande d'alimentation électrique Download PDFInfo
- Publication number
- WO2008053850A1 WO2008053850A1 PCT/JP2007/071049 JP2007071049W WO2008053850A1 WO 2008053850 A1 WO2008053850 A1 WO 2008053850A1 JP 2007071049 W JP2007071049 W JP 2007071049W WO 2008053850 A1 WO2008053850 A1 WO 2008053850A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mode
- control circuit
- circuit
- transition
- current limiter
- Prior art date
Links
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
- H02M3/02—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
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
Definitions
- the present invention relates to a control circuit that transmits a control signal to a switch drive circuit that drives a CMOS switch that is a component of a DC-DC converter circuit.
- a protection circuit is provided to prevent the load connected to the output terminal of the DC-DC converter circuit from being destroyed by overvoltage or overcurrent.
- FIG. 1 shows an example of a conventional DC-DC converter circuit that has power.
- the conventional DC-DC converter circuit includes a switch drive circuit 12 and a CMOS switch to prevent the load 20 connected to the output terminal O from being destroyed by an overvoltage or overcurrent.
- a protection circuit comprising a switch 13 is provided.
- Patent Document 1 JP-A-5-289754
- the present invention has been made in view of the above points.
- the DC-DC converter circuit it is possible to prevent malfunction of the protection circuit and to achieve low power consumption operation without external control. It is an object to provide a control circuit that can be realized.
- a first feature of the present invention is a control circuit that transmits a control signal to a switch drive circuit that drives a CMOS switch that is a component of a DC-DC converter circuit.
- the control circuit includes a PMOS transistor connected to a DC voltage source and an NMOS transistor connected to the ground.
- the output current of the DC-DC converter circuit is equal to or higher than the upper limit current. If it becomes, the transition to the first current limiter mode is made and the first current limiter mode is entered. When the output current falls below the upper limit current, the mode is changed to the normal mode, and in the first current limiter mode, the first predetermined period has elapsed without changing to the normal mode.
- Transition to the second current limiter mode transition to the normal mode and transition to the first current limiter mode when the second predetermined period has elapsed in the second force limiter mode.
- the control signal for instructing the switch transistor to be turned OFF intermittently is transmitted to the switch drive circuit and the transition to the second current limiter mode is made, the switch drive circuit is switched to the switch drive circuit.
- the gist of the invention is to transmit a control signal instructing the PMOS transistor to be continuously turned off.
- control circuit is configured to detect an overshoot mode when the output voltage of the DC-DC converter circuit increases at a predetermined slope or more in the first current limiter mode.
- a control signal is transmitted to instruct the switch drive circuit to alternately switch the PMOS transistor and the NMOS transistor between the ON state and the OFF state. May be.
- a second feature of the present invention is a control circuit that transmits a control signal to a switch drive circuit that drives a CMOS switch that is a component of a DC-DC converter circuit.
- the control circuit includes a PMOS transistor connected to a DC voltage source and an NMOS transistor connected to the ground, and the control circuit is configured such that when the NMOS transistor is in an ON state in the normal mode, the DC transistor -When the output voltage of the DC converter circuit exceeds the reference voltage, transition to the first burst mode, and in the first burst mode, the third predetermined period has elapsed without transition to the normal mode.
- a transition to the second burst mode occurs, and the hysteresis in which the output voltage is input in response to the first burst mode and the second burst mode.
- the mode is changed to the normal mode, and when the mode is changed to the first burst mode, the PMOS transistor and the NMOS transistor are continuously turned off with respect to the switch driving circuit.
- the switch drive circuit When a control signal instructing to enter the state is transmitted and transition to the second burst mode is made, the switch drive circuit is On the other hand, the gist is that the PMOS transistor and the NMOS transistor are continuously turned off and a control signal is transmitted to instruct the hysteresis comparator to narrow the hysteresis width.
- the control circuit switches to an overshoot mode when the output voltage of the DC-DC converter circuit rises above a predetermined slope in the first burst mode.
- a control signal instructing the switch driving circuit to alternately switch between the ON state and the OFF state for the PMOS transistor and the NMOS transistor may be transmitted. Good.
- a third feature of the present invention is a control circuit that transmits a control signal to a switch drive circuit that drives a CMOS switch that is a component of a DC-DC converter circuit.
- the control circuit includes a PMOS transistor connected to a DC voltage source and an NMOS transistor connected to the ground.
- the output voltage of the DC-DC converter circuit has a predetermined slope. When the voltage rises as described above, the mode changes to the overshoot mode, and after the fourth predetermined period has elapsed in the overshoot mode, the output current of the DC-DC converter circuit exceeds the upper limit current.
- the NMOS transistor In the ON state, when the output current of the DC-DC converter circuit becomes equal to or higher than a reference current, the state transits to the first burst mode, and the fourth predetermined period is set in the overshoot mode. After the elapse of time, when the transition to the first current limiter mode or the first burst mode is not made, the transition to the normal mode and the transition to the overshoot mode are made.
- the control signal instructing to alternately switch between the ON state and the OFF state for the NMOS transistor is transmitted and the transition to the first current limiter mode is made, the PMOS transistor is intermittently connected to the switch drive circuit.
- the gist of the present invention is to transmit a control signal instructing to turn off the power continuously.
- control circuit causes the overshoot when the output voltage of the DC-DC converter circuit rises above a predetermined slope in the first current limiter mode. You can change to mode! / ⁇ .
- the control circuit when the output voltage of the DC-DC converter circuit rises above a predetermined slope in the first burst mode, the control circuit performs the overshoot mode. You may transition to.
- FIG. 1 is a diagram showing a configuration of a DC-DC converter circuit according to a conventional technique.
- FIG. 2 is a diagram showing a configuration of a DC-DC converter circuit including a control circuit according to the first embodiment of the present invention.
- FIG. 3 is a diagram showing all operation modes in which the control circuit according to the first embodiment of the present invention can make a transition.
- FIG. 4 is a diagram showing a state in which the control circuit according to the first embodiment of the present invention transitions between a normal mode, a current limiter mode 1 and a current limiter mode 2.
- FIG. 5 is a waveform diagram of various signals when the control circuit according to the first embodiment of the present invention is in the current limiter mode 1 and the current limiter mode 2.
- FIG. 6 is a diagram showing a state in which the control circuit according to the first embodiment of the present invention transitions between a normal mode, a burst mode 1 and a burst mode 2.
- FIG. 7 is a waveform diagram of various signals when the control circuit according to the first embodiment of the present invention is in burst mode 1 and burst mode 2.
- FIG. 8 is a diagram showing how the control circuit according to the first embodiment of the present invention transitions between a normal mode, an overshoot mode, a burst mode 1 and a current limiter mode 1.
- the control circuit (state machine) according to the first embodiment of the present invention
- the DC-DC converter circuit includes a control circuit 10, a clock oscillator (OSC) 11, a switch drive circuit 12, and a CMOS as main components.
- a switch 13 a comparator (CURRLMT) 14, an integrator 15, a comparator (OVDET) 16, a hysteresis comparator (HYST COMP) 17, and a comparator (NSENS) 18 are provided.
- the comparator 14 is configured to determine whether or not the output current force upper limit current of the DC-DC converter circuit is exceeded.
- the comparator 14 compares the current II and the reference current in the comparator 14 to determine whether the output current of the DC-DC converter circuit has exceeded the upper limit current! / It is configured to judge!
- the comparator 14 determines that the output current of the DC-DC converter circuit is equal to or greater than the upper limit current when the current II is equal to or greater than the reference current in the comparator 14. It is configured to output H level in signal CURRLMT_P.
- the integrator 15 uses the signal CURRLMTAN obtained by integrating the judgment signal CURRLMT_P.
- A_P is input to the control circuit 10.
- the comparator 16 is configured to determine whether or not the output voltage force S of the DC-DC converter circuit has risen above a predetermined slope.
- the force and the predetermined inclination are set to optimum values in consideration of the time constant in the DC-DC converter circuit.
- the comparator 16 indicates that the voltage V at the terminal FB is greater than or equal to a predetermined slope.
- the comparator 16 determines that the voltage V at the FB terminal is greater than or equal to a predetermined slope.
- the comparator 18 is configured to determine whether or not the output voltage of the DC-DC comparator circuit is equal to or higher than the reference voltage when the NMOS transistor 13B is in the ON state.
- the comparator 18 has a voltage (output voltage) V at the terminal SWOUT.
- the output current of the DC-DC converter circuit is more than the reference current when the NMOS transistor 13B is ON. It is configured to determine whether or not.
- the comparator 18 is a voltage (output voltage) V power NMOS transistor 1
- the judgment signal NSENS When the reference voltage when 3B is ON (ie, the L level voltage that is the inverted H level for turning on the NMOS transistor) or higher is output, the judgment signal NSENS outputs V and H level. Constructed to do! /
- the hysteresis comparator 17 is configured to receive the output voltage of the DC-DC converter circuit (in the example of Fig. 2, the voltage V at the terminal FB).
- the switch driving circuit 12 is configured to drive the CMOS switch 13 in accordance with control signals input from the control circuit 10, the comparator 14, and the hysteresis comparator 17.
- the switch drive circuit 12 is configured to switch between the CMOS switch 1 state according to the force and the control signal.
- the control circuit 10 is a load connected to the output terminal O in the DC-DC converter circuit.
- a control signal is transmitted to the switch drive circuit 12 that drives the CMOS switch 13.
- control circuit 10 is configured to transmit a control signal to the switch drive circuit 12 that drives the CMOS switch 13 in order to realize low power consumption operation in the DC-DC converter circuit. ! / Speak.
- control circuit 10 is configured to change a control signal to be transmitted to the switch drive circuit 12 according to the current operation mode.
- the operation modes in which the control circuit 10 can make transitions include a normal mode, a current limiter mode 1 (first current limiter mode), and a current limiter mode 2 ( The second current limiter mode), burst mode 1 (first burst mode), burst mode 2 (second burst mode), and overshoot mode are specified.
- the normal mode is an operation mode in which the control circuit 10 does not particularly transmit a control signal to the switch drive circuit 12.
- the switch drive circuit 12 controls the CMOS switch 13 so as to perform a synchronous rectification operation by alternately switching the PMOS transistor 13A and the NMOS transistor 13B between the ON state and the OFF state.
- the current limiter mode 1 is an operation mode in which the control circuit 10 transmits a control signal that instructs the switch drive circuit 12 to intermittently turn off the PMOS transistor 13A.
- control circuit 10 when the control circuit 10 transitions to the current limiter mode 1, the control circuit 10 transmits a control signal that instructs the switch drive circuit 12 to intermittently turn off the PMOS transistor 13A.
- the current limiter mode 2 is an operation mode in which the control circuit 10 transmits a control signal that instructs the switch drive circuit 12 to continuously turn off the PMOS transistor 13A.
- control circuit 10 when the control circuit 10 transitions to the current limiter mode 2, the control circuit 10 transmits a control signal that instructs the switch drive circuit 12 to continuously turn off the PMOS transistor 13A.
- burst mode 1 the control circuit 10 instructs the switch drive circuit 12 to stop the synchronous rectification operation by continuously turning off the PMOS transistor 13A and the NMOS transistor 13B. This is an operation mode for transmitting a control signal to be transmitted.
- control circuit 10 when the control circuit 10 transitions to the burst mode 1, the control circuit 10 transmits a control signal instructing to stop the synchronous rectification operation by setting the switch driving circuit 12 state.
- the control circuit 10 has a PMOS transistor connected to the switch drive circuit 12. This is an operation mode in which a control signal is transmitted to instruct the hysteresis width of the hysteresis comparator 17 to be reduced while the transistor 13A and the NMOS transistor 13B are continuously turned off.
- control circuit 10 transits to the burst mode 2
- the control circuit 10 enters the switch drive circuit 12 state and transmits a control signal instructing to narrow the hysteresis width in the hysteresis comparator 17.
- the control circuit 10 causes the switch drive circuit 12 to perform a synchronous rectification operation by alternately switching the PMOS transistor 13A and the NMOS transistor 13B between the ON state and the OFF state. This is an operation mode that transmits a control signal to instruct.
- a control signal is sent to instruct synchronous rectification by switching between the N and OFF states.
- control circuit 10 transitions between the normal mode, the current limiter mode 1 and the current limiter mode 2.
- control circuit 10 in the normal mode, has an output current of the DC-DC converter circuit (current II in the example of FIG. 2) of the upper limit current (in the example of FIG. Transition to current limiter mode 1 (S101).
- control circuit 10 transitions to the current limiter mode 1 when the H level is input in the determination signal CURRLMT_P from the comparator 14 in the normal mode.
- control circuit 10 makes a transition to the normal mode in the current limiter mode 1. If the first predetermined period has elapsed, the current limiter mode 2 is entered (S102).
- control circuit 10 transitions to the current limiter mode 1, the control circuit 10 instructs the clock oscillator 11 to output the clock signal SD_OSC.
- control circuit 10 generates a clock signal for 6 pulses.
- control circuit 10 transitions to the normal mode when the second predetermined period has elapsed in the current limiter mode 2 (S103).
- the control circuit 10 determines that the second predetermined period has elapsed and shifts to the normal mode. To do.
- the control circuit 10 determines that the output current of the DC-DC converter circuit (current II in the example of FIG. 2) is the upper limit current (the reference in the comparator 14 in the example of FIG. 2). When the current is lower than (current), the normal mode is entered (S104).
- control circuit 10 transitions to the normal mode when the L level is continuously input for a certain period in the determination signal CURRLMT_P from the comparator 14.
- control circuit 10 receives the determination signal C from the comparator 14 at time.
- URRLMT_P When URRLMT_P detects that an H level has been input, it transitions to the current limiter mode 1 and notifies the switch drive circuit 12 to that effect.
- control circuit 10 determines that the clock signal SD_OSC for 6 pulses has been received at the time, transitions to the current limiter mode 1, and Notify switch drive circuit 12.
- control circuit 10 uses the control signal SENSCURR_P, for example, to limit the current limit.
- the power S to notify the switch drive circuit 12 of the transition to the data mode 1 or current limiter mode 2 is applied.
- the control circuit 10 determines that the clock signal SD_OSC for 7 pulses has been received at the time, transitions to the normal mode, and notifies the switch drive circuit 12 to that effect.
- control circuit 10 can notify the switch drive circuit 12 of the transition to the normal mode using, for example, the control signal SENSCURR_P.
- control circuit 10 transitions to the burst mode 1 when detecting that the H level is input in the determination signal NSENS from the comparator 18.
- the control circuit 10 transitions to the burst mode 2 when the third predetermined period has elapsed without transitioning to the normal mode (S202).
- control circuit 10 transmits a control signal POFFOSC instructing the clock oscillator 11 to output the clock signal SD_OSC.
- the control circuit 10 transitions to the normal mode when detecting the transition of the output of the hysteresis comparator 17 (eg, L level output) (S203). .
- control circuit 10 has a voltage V force hysteresis comparator at the terminal FB. When the voltage falls below the set voltage for L level output of data 17, the mode is changed to normal mode.
- control circuit 10 detects that the H level is input to the judgment signal N SENS having 18 comparators at the time, transitions to the burst mode 1, and outputs the control signal SENSNSENS.
- the switch drive circuit 12 is notified of this.
- the control circuit 10 receives the clock signal SD OSC for six pulses at the time.
- Judgment makes a transition to burst mode 1, and notifies the switch drive circuit 12 using the control signal SENSNSENS.
- the control circuit 10 receives the determination signal NSENS from the comparator 18 at time.
- control circuit 10 transitions between the normal mode, the overshoot mode, the current limiter mode 1 and the burst mode 1. To do.
- the control circuit 10 increases the output voltage of the DC-DC converter circuit (the voltage V at the terminal FB in the example of FIG. 2) with a predetermined slope or more.
- the mode transits to the overshoot mode (S301).
- control circuit 10 transitions to the overshoot mode when the determination signal OVDETOUT from the comparator 16 is input to the determination signal OVDETOUT and the H level is input. Notify switch drive circuit 12.
- control circuit 10 transitions to the normal mode when the transition to the current limiter mode 1 or the burst mode 1 is not made after the fourth predetermined period has elapsed (S302).
- the control circuit 10 receives the clock signal SD_OSC for 6 pulses and then does not receive the H level in the determination signal CURRLMT_P from the comparator 14, and Judgment signal from comparator 18 NSENS When the power is not input at H level, the normal mode is entered and the switch drive circuit 12 is notified of this.
- the control circuit 10 determines that the output current of the DC-DC converter circuit (current 12 in the example of Fig. 2) is the upper limit current (Fig. 2) after the fourth predetermined period has elapsed. In the example of 2, when the current becomes equal to or greater than the output current A of the switch drive circuit 12, the current limiter mode 1 is entered (S 303).
- the control circuit 10 receives the clock signal SD_OSC for 6 pulses, and then inputs the H level to the determination signal CURRLMT_P from the comparator 14! When this is detected, the mode transits to the current limiter mode 1, and the switch drive circuit 12 is notified of this.
- control circuit 10 outputs the output voltage of the DC-DC converter circuit (example of FIG. 2) when the NMOS transistor 13B is in the ON state after the fourth predetermined period has elapsed in the overshoot mode.
- the control circuit 10 detects that the H level is input in the determination signal NSENS from the comparator 18 after receiving the clock signal SD_OSC for 6 pulses. In this case, the mode transits to burst mode 1 and notifies the switch drive circuit 12 to that effect.
- control circuit 10 increases the output voltage of the DC-DC converter circuit (voltage V at the terminal FB in the example of FIG. 2) force with a predetermined slope or more.
- control circuit 10 transitions to the overshoot mode when the determination signal OVDETOUT from the comparator 16 is input with a! / This is notified to the switch drive circuit 12.
- the control circuit 10 outputs a voltage when the output voltage of the DC-DC converter circuit (voltage V at the terminal FB in the example of FIG. 2) force rises above a predetermined slope.
- the mode transits to the overshoot mode (S306).
- the control circuit 10 transitions to the overshoot mode when a high level is input to the determination signal OVDETOUT from the comparator 16 and This is notified to the switch drive circuit 12.
- control circuit 10 when the output current (current II) of the DC-DC converter circuit exceeds the upper limit current (reference current in the comparator 14), an overcurrent is applied to the load 20, Transitions to current limiter mode 1. In the current limiter mode 1, the control circuit 10 can reduce this risk by turning off the PMOS transistor 13A connected to the DC voltage source intermittently.
- control circuit 10 after the transition to the current limiter mode 1, even if the second predetermined period (period of 6 pulses) has elapsed, the DC-DC converter circuit If the output current (current II) does not fall below the upper limit current (reference current in comparator 14), transition to current limiter mode 2.
- the control circuit 10 can further reduce this risk by continuously turning off the PMOS transistor 13A connected to the DC voltage source in the current limiter mode 2.
- both the PMOS transistor 13A and the NMOS transistor 13B are turned off, whereby low power consumption operation can be realized.
- the control circuit 10 in the burst mode 1, without returning to the normal mode (that is, the voltage V force S at the terminal FB, the hysteresis comparator).
- the hysteresis width (output ripple) of the hysteresis comparator 17 is reduced, thereby reducing the The load response can be improved by shortening the period from t to
- control circuit 10 when the output voltage of the DC-DC converter circuit (voltage V at the terminal FB) rises above a predetermined slope, an overvoltage is applied to the load 20.
- control circuit 10 can perform the synchronous rectification operation without performing the low power consumption operation, so that the output voltage can be settled to the target voltage. Such a risk can be reduced.
- the DC-DC converter circuit can prevent the malfunction of the protection circuit and realize the low power consumption operation without external control. -Useful for control circuits that send control signals to the switch drive circuit that drives the CMOS switch, which is a component of the DC converter circuit.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/447,766 US8093876B2 (en) | 2006-10-31 | 2007-10-29 | Power control circuit to prevent a malfunction of a protection circuit |
CN2007800393121A CN101529706B (zh) | 2006-10-31 | 2007-10-29 | 电源控制电路 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-297119 | 2006-10-31 | ||
JP2006297119A JP4934403B2 (ja) | 2006-10-31 | 2006-10-31 | 電源制御回路 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008053850A1 true WO2008053850A1 (fr) | 2008-05-08 |
Family
ID=39344192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/071049 WO2008053850A1 (fr) | 2006-10-31 | 2007-10-29 | Circuit de commande d'alimentation électrique |
Country Status (5)
Country | Link |
---|---|
US (1) | US8093876B2 (ja) |
JP (1) | JP4934403B2 (ja) |
KR (1) | KR20090077057A (ja) |
CN (1) | CN101529706B (ja) |
WO (1) | WO2008053850A1 (ja) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9197132B2 (en) | 2006-12-01 | 2015-11-24 | Flextronics International Usa, Inc. | Power converter with an adaptive controller and method of operating the same |
JP5083117B2 (ja) * | 2008-08-20 | 2012-11-28 | 富士通セミコンダクター株式会社 | Dc−dcコンバータ及びdc−dcコンバータの制御回路 |
US9088216B2 (en) | 2009-01-19 | 2015-07-21 | Power Systems Technologies, Ltd. | Controller for a synchronous rectifier switch |
JP2010226916A (ja) * | 2009-03-25 | 2010-10-07 | Sanken Electric Co Ltd | スイッチング電源装置、及びその制御回路 |
US9077248B2 (en) | 2009-06-17 | 2015-07-07 | Power Systems Technologies Ltd | Start-up circuit for a power adapter |
US9246391B2 (en) | 2010-01-22 | 2016-01-26 | Power Systems Technologies Ltd. | Controller for providing a corrected signal to a sensed peak current through a circuit element of a power converter |
JP2011172320A (ja) * | 2010-02-16 | 2011-09-01 | On Semiconductor Trading Ltd | スイッチング制御回路 |
KR101633426B1 (ko) | 2010-06-25 | 2016-06-27 | 삼성디스플레이 주식회사 | 유기 전계발광 표시장치용 전원공급장치 |
KR102013470B1 (ko) * | 2011-10-26 | 2019-10-21 | 마이크로세미 코포레이션 | 스텝-다운 dc/dc 컨버터를 위한 히스테리시스 제어부 |
US9793706B2 (en) | 2012-04-20 | 2017-10-17 | Vishay-Siliconix | Current limiting systems and methods |
US9190898B2 (en) | 2012-07-06 | 2015-11-17 | Power Systems Technologies, Ltd | Controller for a power converter and method of operating the same |
US20140009970A1 (en) * | 2012-07-06 | 2014-01-09 | Power Systems Technologies, Ltd. | Controller for a Power Converter and Method of Operating the Same |
US8836404B2 (en) | 2012-08-02 | 2014-09-16 | Vishay-Siliconix | Circuit for preventing reverse conduction |
US9240712B2 (en) | 2012-12-13 | 2016-01-19 | Power Systems Technologies Ltd. | Controller including a common current-sense device for power switches of a power converter |
US9018931B2 (en) * | 2012-12-19 | 2015-04-28 | Solidstate Controls, Llc | Control system for providing circuit protection to a power supply |
KR102031534B1 (ko) * | 2013-01-07 | 2019-10-14 | 삼성전자 주식회사 | 스위칭 레귤레이터 및 비교기를 이용한 스위칭 레귤레이터의 제로 커런트 감지 방법 |
CN103199705B (zh) * | 2013-03-21 | 2015-04-15 | 电子科技大学 | 具有负载最小能量消耗点追踪功能的降压式稳压电源 |
JP6171556B2 (ja) * | 2013-05-22 | 2017-08-02 | サンケン電気株式会社 | スイッチング電源装置 |
JP6278188B2 (ja) * | 2013-09-24 | 2018-02-14 | サンケン電気株式会社 | Dc/dcコンバータ |
US9300206B2 (en) | 2013-11-15 | 2016-03-29 | Power Systems Technologies Ltd. | Method for estimating power of a power converter |
US9876429B1 (en) * | 2016-09-16 | 2018-01-23 | Apple Inc. | Reconfigurable on time circuit for current mode control of buck converter |
CN109823177B (zh) * | 2017-11-22 | 2022-04-05 | 湖南中车时代电动汽车股份有限公司 | 一种用于电动汽车的保护装置以及方法 |
US11239758B2 (en) * | 2018-04-20 | 2022-02-01 | Amlogic (Shanghai) Co., Ltd. | Power supply system with stable loop |
US11018582B2 (en) * | 2018-10-24 | 2021-05-25 | Texas Instruments Incorporated | Adaptive synchronous rectification in a voltage converter |
US11038427B1 (en) | 2020-01-06 | 2021-06-15 | Nxp B.V. | Charge-cycle control for burst-mode DC-DC converters |
US10784783B1 (en) * | 2020-01-06 | 2020-09-22 | Nxp B.V. | Charge-cycle control for burst-mode DC-DC converters |
US11811314B2 (en) * | 2020-12-30 | 2023-11-07 | Texas Instruments Incorporated | Multi-mode power converter with programmable control |
CN114552529B (zh) * | 2022-01-28 | 2022-10-21 | 绵阳惠科光电科技有限公司 | 过压保护电路、装置、显示面板及显示器 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0592819U (ja) * | 1992-04-28 | 1993-12-17 | シャープ株式会社 | 直流安定化回路 |
JP2002058239A (ja) * | 2000-08-10 | 2002-02-22 | Texas Instr Japan Ltd | 駆動信号供給回路 |
JP2004088950A (ja) * | 2002-08-28 | 2004-03-18 | Seiko Epson Corp | 電源回路 |
JP2004297985A (ja) * | 2003-03-28 | 2004-10-21 | Tdk Corp | スイッチング電源のソフトスタート方法、出力制御回路およびスイッチング電源 |
JP2005176587A (ja) * | 2003-11-21 | 2005-06-30 | Matsushita Electric Ind Co Ltd | 過電流保護装置 |
JP2006174630A (ja) * | 2004-12-17 | 2006-06-29 | Rohm Co Ltd | スイッチング電源の制御方法、制御回路および電源装置 |
JP2006211760A (ja) * | 2005-01-26 | 2006-08-10 | Renesas Technology Corp | 電源用電子部品並びに電源装置 |
JP2007020352A (ja) * | 2005-07-11 | 2007-01-25 | Rohm Co Ltd | 降圧型スイッチングレギュレータおよびその制御回路ならびにそれを用いた電子機器 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3744680B2 (ja) | 1998-03-31 | 2006-02-15 | 富士通株式会社 | 電源装置、および電源回路の制御方法 |
US6844710B2 (en) * | 2002-11-12 | 2005-01-18 | O2Micro International Limited | Controller for DC to DC converter |
US7355830B2 (en) | 2003-11-21 | 2008-04-08 | Matsushita Electric Industrial Co., Ltd. | Overcurrent protection device |
US7292013B1 (en) * | 2004-09-24 | 2007-11-06 | Marvell International Ltd. | Circuits, systems, methods, and software for power factor correction and/or control |
CN100454710C (zh) * | 2005-05-13 | 2009-01-21 | 崇贸科技股份有限公司 | 过电压保护装置 |
JP4658786B2 (ja) * | 2005-11-30 | 2011-03-23 | 株式会社日立製作所 | 電源装置 |
JP5174390B2 (ja) * | 2007-08-06 | 2013-04-03 | ローム株式会社 | 電源装置及びこれを備えた電子機器 |
-
2006
- 2006-10-31 JP JP2006297119A patent/JP4934403B2/ja not_active Expired - Fee Related
-
2007
- 2007-10-29 CN CN2007800393121A patent/CN101529706B/zh not_active Expired - Fee Related
- 2007-10-29 KR KR1020097008881A patent/KR20090077057A/ko not_active Application Discontinuation
- 2007-10-29 US US12/447,766 patent/US8093876B2/en not_active Expired - Fee Related
- 2007-10-29 WO PCT/JP2007/071049 patent/WO2008053850A1/ja active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0592819U (ja) * | 1992-04-28 | 1993-12-17 | シャープ株式会社 | 直流安定化回路 |
JP2002058239A (ja) * | 2000-08-10 | 2002-02-22 | Texas Instr Japan Ltd | 駆動信号供給回路 |
JP2004088950A (ja) * | 2002-08-28 | 2004-03-18 | Seiko Epson Corp | 電源回路 |
JP2004297985A (ja) * | 2003-03-28 | 2004-10-21 | Tdk Corp | スイッチング電源のソフトスタート方法、出力制御回路およびスイッチング電源 |
JP2005176587A (ja) * | 2003-11-21 | 2005-06-30 | Matsushita Electric Ind Co Ltd | 過電流保護装置 |
JP2006174630A (ja) * | 2004-12-17 | 2006-06-29 | Rohm Co Ltd | スイッチング電源の制御方法、制御回路および電源装置 |
JP2006211760A (ja) * | 2005-01-26 | 2006-08-10 | Renesas Technology Corp | 電源用電子部品並びに電源装置 |
JP2007020352A (ja) * | 2005-07-11 | 2007-01-25 | Rohm Co Ltd | 降圧型スイッチングレギュレータおよびその制御回路ならびにそれを用いた電子機器 |
Also Published As
Publication number | Publication date |
---|---|
CN101529706B (zh) | 2012-04-18 |
CN101529706A (zh) | 2009-09-09 |
US20100066336A1 (en) | 2010-03-18 |
JP2008118734A (ja) | 2008-05-22 |
KR20090077057A (ko) | 2009-07-14 |
JP4934403B2 (ja) | 2012-05-16 |
US8093876B2 (en) | 2012-01-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2008053850A1 (fr) | Circuit de commande d'alimentation électrique | |
JP5125066B2 (ja) | 同期整流型dc−dcコンバータの制御回路、同期整流型dc−dcコンバータ及びその制御方法 | |
JP5330962B2 (ja) | Dc−dcコンバータ | |
JP2008283787A (ja) | スイッチング電源装置 | |
KR20120022564A (ko) | 스위칭 전압 조정기에서 슛?스루의 감소 | |
JP2009100498A (ja) | スイッチング電源装置 | |
JP2006280138A (ja) | Dc−dcコンバータ | |
JP2010178438A (ja) | スイッチング電源制御回路 | |
US10396667B2 (en) | DC-DC converter including an intermittent overcurrent protection circuit | |
JP2005229774A (ja) | バッテリー状態監視回路とバッテリー装置 | |
JP2010277226A (ja) | 直流安定化電源装置及びそれを備えた電子機器 | |
US8027178B1 (en) | Power conversion apparatus with adjustable LEB time and over current protection method thereof | |
JP2011188586A (ja) | スイッチング電源装置の制御回路 | |
JP2007151322A (ja) | 電源回路およびdc−dcコンバータ | |
JP2008236873A (ja) | 電源制御装置、電源制御方法及び画像処理装置 | |
JP4316362B2 (ja) | 電源回路 | |
JP7461253B2 (ja) | 昇圧型スイッチングレギュレータ | |
JP2009044448A (ja) | 複合機能集積回路及び複合機能集積回路の制御方法 | |
JP2006246625A (ja) | スイッチング電源回路 | |
JPH08340670A (ja) | Dc/dcコンバータ | |
JP2009038894A (ja) | 電源制御回路 | |
JP2892769B2 (ja) | スイッチングレギュレータ | |
JP4923846B2 (ja) | 電源装置 | |
JP5660575B2 (ja) | 制御回路およびスイッチング電源装置 | |
JP7324627B2 (ja) | 電源制御装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200780039312.1 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07830783 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12447766 Country of ref document: US Ref document number: 1020097008881 Country of ref document: KR |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 07830783 Country of ref document: EP Kind code of ref document: A1 |