CN105896972A - Self-adaptive secondary slope compensation circuit for BUCK converter - Google Patents
Self-adaptive secondary slope compensation circuit for BUCK converter Download PDFInfo
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- CN105896972A CN105896972A CN201610258076.3A CN201610258076A CN105896972A CN 105896972 A CN105896972 A CN 105896972A CN 201610258076 A CN201610258076 A CN 201610258076A CN 105896972 A CN105896972 A CN 105896972A
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Classifications
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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
- H02M3/1563—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 without using an external clock
-
- 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
- H02M3/1566—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 with means for compensating against rapid load changes, e.g. with auxiliary current source, with dual mode control or with inductance variation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
本发明属于电子技术领域，具体涉及一种用于峰值电流模式BUCK变换器的自适应二次斜坡补偿电路。本发明的电路，包括自适应电流产生电路和二次电压信号产生电路；所述自适应电流产生电路的第一输入端接BUCK变换器的占空比信号，自适应电流产生电路的第二输入端接参考电压，自适应电流产生电路的输出端接二次电压信号产生电路的第一输入端；所述二次电压信号产生电路的第二输入端接脉冲开关信号，其输出端输出自适应二次电压信号。本发明的有益效果为，不但具有二次斜坡补偿的优点，同时适用于开关频率可变的电流模式Buck变换器。
The invention belongs to the field of electronic technology, and in particular relates to an adaptive secondary slope compensation circuit for a peak current mode BUCK converter. The circuit of the present invention includes an adaptive current generating circuit and a secondary voltage signal generating circuit; the first input terminal of the adaptive current generating circuit is connected to the duty cycle signal of the BUCK converter, and the second input of the adaptive current generating circuit is The terminal is connected to the reference voltage, the output terminal of the adaptive current generating circuit is connected to the first input terminal of the secondary voltage signal generating circuit; the second input terminal of the secondary voltage signal generating circuit is connected to the pulse switch signal, and the output terminal of the adaptive current generating circuit outputs an adaptive secondary voltage signal. The beneficial effect of the invention is that it not only has the advantage of secondary slope compensation, but also is suitable for a current mode Buck converter with variable switching frequency.
Description
Technical field
The invention belongs to electronic technology field, be specifically related to a kind of Adaptive Second for peak-current mode BUCK changer
Slope compensation circuit.
Background technology
The electronic system that function is become stronger day by day uses POL power supply to power mostly, and the requirement to such power supply is high reliability, height
Efficiency and high power density, even some battery powered equipment requirements POL power supplies can be in the case of very low input
Normal work.These high requests bring new challenge to undoubtedly the design of electric pressure converter.The switching power source chip of current-mode is because of it
The advantages such as compensation loop is simple, dynamic property is good, are widely used for doing POL power supply.But, Controlled in Current Mode and Based is easily subject to
The impact of some factors, the most inappropriate slope compensation can cause subharmonic oscillation or loop response variation etc..
Traditional slope compensation scheme has fixed ramp compensation, Piecewise Linear Slope Compensation, secondary slope compensation etc., each of which
There are pluses and minuses.
It is simple that fixed ramp compensates circuit structure, but compensate slope constant cause there will be under certain operating conditions overcompensation or
Undercompensation, affects the load capacity of system, response speed and stability；The compensation slope of Piecewise Linear Slope Compensation accounts for whole
Sky than in the range of can take several different values, avoids fixed ramp to a certain extent and compensates in the case of little dutycycle
Overcompensation, but in the case of its most real currently all dutycycle, slope compensation is all optimal value；Secondary slope compensation is the most well
Solve the corresponding relation between optimal compensation slope and dutycycle, it is achieved that under all dutycycles system have good stability and
Response speed.But present current-mode Buck changer is the application adapting to more occasions, using can the switch of outer adjusted in concert
Frequency, because the inductance value that different switching frequency corresponding selection is different, and the slope compensated is relevant with inductance value, thus
Bringing a difficult problem to slope compensation, three kinds of above-mentioned schemes are the most applicable.
Summary of the invention
The invention aims to solve the problems referred to above, propose a kind of Adaptive Second slope compensation for BUCK changer
Circuit.
The technical scheme is that a kind of Adaptive Second slope compensation circuit for BUCK changer, it is characterised in that
Circuit and secondary voltage signal generating circuit is produced including self-adaptive current；Described self-adaptive current produce circuit for produce with
BUCK changer change in duty cycle and the current signal that changes；Described self-adaptive current produces the first input end of circuit and connects
The duty cycle signals of BUCK changer, self-adaptive current produces the second input termination reference voltage of circuit, and self-adaptive current produces
The first input end of the output termination secondary voltage signal generating circuit of raw circuit；Described secondary voltage signal generating circuit is used for will
Self-adaptive current produces the electric current of circuit output and is converted into secondary slope compensation signal by capacitance integral；Described secondary voltage signal
Produce the second input termination pulse switch signal of circuit, its outfan output adaptive secondary voltage signal.
Further, described self-adaptive current produce circuit include the first NMOS tube M1, the second NMOS tube M7, first
PMOS M2, the second PMOS M3, the 3rd PMOS M4, the 4th PMOS M5, the 5th PMOS
M6, the first transmission gate TG1, the second transmission gate TG2, the 3rd transmission gate TG3, the 4th transmission gate TG4, the 5th transmission gate
TG5, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, resistance Rs and operational amplifier；
The source electrode of described first PMOS M2 connects power supply, its grid and drain interconnection；
The source electrode of described second PMOS M3 connects power supply, and its grid meets the drain electrode of the first PMOS M2, the 2nd PMOS
The drain electrode of pipe M3 is by ground connection after the second electric capacity C2；
The source electrode of described 3rd PMOS M4 connects power supply, and its grid meets the drain electrode of the first PMOS M2, the 3rd PMOS
The drain electrode of pipe M4 produces the outfan of circuit for self-adaptive current；
The source electrode of described 4th PMOS M5 connects power supply, its grid and drain interconnection；
The source electrode of described 5th PMOS M6 connects power supply, and its grid meets the drain electrode of the 4th PMOS M5, the 5th PMOS
The drain electrode of pipe M6 is by ground connection after the first electric capacity C1；
Described first transmission gate TG1 is by duty cycle signals control, the source electrode of one termination the 5th PMOS M6, another termination
Ground；
Described second transmission gate TG2 is controlled by reverse duty cycle signals, the source electrode of one termination the 5th PMOS M6, another
Terminate one end of the 3rd transmission gate TG3；
Described 3rd transmission gate TG3 by duty cycle signals control, the negative input end of its another termination operational amplifier；
The junction point of described second transmission gate TG2 and the 3rd transmission gate TG3 is by ground connection after the 3rd electric capacity C3；
The positive input of described operational amplifier connects reference voltage, the grid of its output termination the first NMOS tube M1；
The drain electrode of described first NMOS tube M1 connects the drain electrode of the first PMOS M2, the source electrode of the first NMOS tube M1
Ground connection；
Described 4th transmission gate TG4 is controlled by reverse duty cycle signals, and one terminates the drain electrode of the second PMOS M3, another
Terminate one end of the 5th transmission gate TG5；
The junction point of described 4th transmission gate TG4 and the drain electrode of two PMOS M3 is by ground connection after the second electric capacity C2；
Described 5th transmission gate TG5 by duty cycle signals control, its another terminate the grid of the second NMOS tube M7, the 5th passes
The junction point of defeated door TG5 and the second NMOS tube M7 grid is by ground connection after the 4th electric capacity C4；
The drain electrode of described second NMOS tube M7 connects the drain electrode of the 4th PMOS M5, the source electrode of the second NMOS tube M7
By ground connection after resistance Rs；
Described secondary voltage signal generating circuit include the 6th transmission gate TG6, the 7th transmission gate TG7, the 5th electric capacity C5, the 6th
Electric capacity C6 and trsanscondutance amplifier；
Described 6th transmission gate TG6 is by pulse switch signal control, the input of one termination trsanscondutance amplifier, other end ground connection；
The junction point of described 6th transmission gate TG6 and trsanscondutance amplifier input is by ground connection after the 5th electric capacity C5；
The junction point of described 6th transmission gate TG6, trsanscondutance amplifier input and the 5th electric capacity C5 connects the 3rd PMOS M4
Drain electrode；
The outfan of described trsanscondutance amplifier is by ground connection after the 6th electric capacity C6；
The junction point of described trsanscondutance amplifier outfan and the 6th electric capacity C6 connects one end of the 7th transmission gate TG7；
Described 7th transmission gate TG7 by pulse switch signal control, its other end ground connection；
The junction point of described trsanscondutance amplifier outfan, the 6th electric capacity C6 and the 7th transmission gate TG7 one end is secondary voltage signal
Produce the outfan of circuit.
Beneficial effects of the present invention is, the advantage not only with secondary slope compensation is simultaneously suitable for the electric current that switching frequency is variable
Mode B uck changer, i.e. compensates hill slope not only adaptive input output voltage and also can change according to switching frequency and inductance value
Become so that under different application conditions, all can have the suitableeest compensation slope.
Accompanying drawing explanation
Fig. 1 Adaptive Second slope compensation circuit structural representation；
Fig. 2 self-adaptive current produces circuit structure diagram；
Fig. 3 secondary voltage signal generating circuit structure chart；
Fig. 4 is that under different switching frequency, self-adaptive current produces circuit output current emulation schematic diagram；
Fig. 5 is Adaptive Second ramp signal emulation schematic diagram under different duty.
Detailed description of the invention
Below in conjunction with the accompanying drawings, technical scheme is described in detail:
The present invention proposes a kind of Adaptive Second slope compensation circuit, produces circuit and secondary voltage signal including self-adaptive current
Produce two modules of circuit.As it is shown in figure 1, two submodular circuits are used in series, it can be applicable to the Buck of peak-current mode
In changer.First principles analysis: shown in required secondary ramp signal such as formula (1), wherein Vin is power source input voltage,
Zcf is that electric current uses resistance, and fs is the switching signal of burst pulse；According to inductance L in formula (2) and maximum load current ILOAD,
Relation between ripple factor a, output voltage and dutycycle, arranges and is available from adapting to needed for secondary slope compensation and dutycycle
The voltage signal expression formula (3) relevant with switching frequency, therefore, it is possible to reach the purpose of adaptive change.
In the solution of the present invention:
The duty cycle signals of the input termination changer of self-adaptive current generation module, is output as electric current and connects secondary singal generation module.
The size of this electric current has relation with dutycycle and switching frequency, it is possible to adaptively with input/output voltage, switching frequency and inductance
The change of value and change.Self-adaptive current is passed sequentially through capacitance integral and obtains linear voltage by secondary voltage signal generator module,
It is converted into linear voltage by trsanscondutance amplifier again, finally obtains required secondary slope compensation signal further through capacitance integral.
When selecting different output voltages and inductance according to application conditions, corresponding dutycycle and switching frequency will change, because of
This self-adaptive current value produced also can change, and finally obtains the suitableeest secondary slope compensation signal under this application conditions.
Wherein self-adaptive current produces circuit by two NMOS tube (M1 and M7), five PMOS (M2, M3, M4,
M5 and M6), five transmission gates (TG1, TG2, TG3, TG4 and TG5), four electric capacity (C1, C2, C3 and C4),
Resistance Rs and amplifier Av composition, as shown in Figure 2.Basic structure and principle be: the source termination power of M6, leaks termination capacitor
C1 and transmission gate TG1, TG2, the grid end of grid termination M5；The other end ground connection of C1, TG1 is controlled by duty cycle signals D
And other end ground connection, TG2 is controlled by inverse duty cycle signal D ' and another termination TG3 and electric capacity C3；The electric capacity C3 other end
Ground connection, TG3 is by duty cycle signals control and another termination capacitor CINT and the negative input end of voltage amplifier Av, and Av is just
The output of another termination Av of input termination reference voltage VREF, CINT and the grid end of M1, TG2 and TG3 is alternately herein
Open, and constitute switched-capacitor integrator with amplifier Av, electric capacity CINT；M1 is the input pipe of a common source amplifier stage, its
Source ground connection, drain terminal connects grid and the leakage of M2, and the drain terminal of M1 is further connected with source bias current Ib1 with stable mutual conductance；The source of M2
Termination power, the grid end of grid termination M3 and M4, M2 Yu M3, M4 constitute current-mirror structure；The source termination power of M3,
The drain terminal of M3 meets C2 and TG4；The other end ground connection of C2, TG4 is controlled by inverse duty cycle signal and another termination TG5,
TG5 is by duty cycle signals control and the grid end of another termination C4 and M7；C4 other end ground connection, the source connecting resistance Rs of M7,
The other end ground connection of Rs；The drain terminal of M7 meets M5 drain terminal and active biased electric current Ib2；The grid end of M5 and drain terminal are connected together,
Source termination power；Herein, the electric current of M3 mirror image to C2 charge, the voltage signal that C2 obtains again pass sequentially through switch TG4,
TG5 and C4, constitutes a basic sampling and keeps module；Again by the voltage signal obtained on C4 by being connected to source degeneration electricity
The M7 of resistance Rs and bias current Ib2 is converted to current signal, and the M5 mirror image then connected by diode feeds back to M6.Whole
Individual structure is data sampling feedback system, and after loop stability, the drain terminal of M4 obtains the electric current relevant to dutycycle and switching frequency
Icharge。
The effect of described secondary voltage signal generating circuit is to be converted into by the adaptive current signal Icharge obtained periodically
Secondary voltage signal, it is made up of electric capacity C5, electric capacity C6, transmission gate TG6 and TG7 and trsanscondutance amplifier gm, as
Shown in Fig. 3.Basic structure and principle be: termination self-adaptive current Icharge, TG6 and trsanscondutance amplifier gm of electric capacity C5；
Icharge obtains becoming once the voltage signal of relation with the time to C5 charging herein, then is amplified by mutual conductance by this voltage signal
Device gm is converted to primary current signal；TG6 is controlled and other end ground connection, trsanscondutance amplifier gm by switching signal fs of burst pulse
Output meets electric capacity C6 and TG7, electric capacity C6 other end ground connection, and TG7 is controlled and other end ground connection by burst pulse switching signal fs；
Primary current signal obtains required secondary singal by electric capacity C6 integration herein, and the output end voltage of gm is just the most certainly
Adapt to secondary slope compensation signal Vramp_quad (t).
When input and output voltage, switching frequency and inductance value change, the size of Icharge will change accordingly, exports the suitableeest
Slope compensation signal Vramp_quad (t).
Fig. 4 is the simulation result of Icharge under different switching frequency, it can be seen that current value becomes quadratic relationship with switching frequency, symbol
Closing theory calls, illustrating to compensate slope can frequency of adaptive switch change；Fig. 5 is Adaptive Second slope under different duty
Signal simulation result, needs the least compensation slope during corresponding D=0.1, as it can be seen, i.e. slope is the most slow, need as D=0.9
The compensation slope wanted is very big, and comparative illustration compensates slope can the change of self adaptation dutycycle.
Claims (2)
1. the Adaptive Second slope compensation circuit for BUCK changer, it is characterised in that include self-adaptive current
Produce circuit and secondary voltage signal generating circuit；Described self-adaptive current produces circuit for producing with BUCK changer duty
The current signal changed than change；The first input end of described self-adaptive current generation circuit connects the dutycycle of BUCK changer
Signal, self-adaptive current produces the second input termination reference voltage of circuit, and self-adaptive current produces the output termination secondary of circuit
The first input end of voltage signal generation circuit；Described secondary voltage signal generating circuit is defeated for self-adaptive current is produced circuit
The electric current gone out is converted into secondary slope compensation signal by capacitance integral；Second input of described secondary voltage signal generating circuit
Connect pulse switch signal, its outfan output adaptive secondary voltage signal.
A kind of Adaptive Second slope compensation circuit for BUCK changer the most according to claim 1, its feature
Being, described self-adaptive current produces circuit and includes the first NMOS tube (M1), the second NMOS tube (M7), a PMOS
Pipe (M2), the second PMOS (M3), the 3rd PMOS (M4), the 4th PMOS (M5), the 5th PMOS
Pipe (M6), the first transmission gate (TG1), the second transmission gate (TG2), the 3rd transmission gate (TG3), the 4th transmission gate (TG4),
5th transmission gate (TG5), the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4),
Resistance (Rs) and operational amplifier；
The source electrode of described first PMOS (M2) connects power supply, its grid and drain interconnection；
The source electrode of described second PMOS (M3) connects power supply, and its grid connects the drain electrode of the first PMOS (M2), and second
The drain electrode of PMOS (M3) is by the second electric capacity (C2) ground connection afterwards；
The source electrode of described 3rd PMOS (M4) connects power supply, and its grid connects the drain electrode of the first PMOS (M2), and the 3rd
The drain electrode of PMOS (M4) produces the outfan of circuit for self-adaptive current；
The source electrode of described 4th PMOS (M5) connects power supply, its grid and drain interconnection；
The source electrode of described 5th PMOS (M6) connects power supply, and its grid connects the drain electrode of the 4th PMOS (M5), and the 5th
The drain electrode of PMOS (M6) is by the first electric capacity (C1) ground connection afterwards；
Described first transmission gate (TG1) is by duty cycle signals control, and one terminates the source electrode of the 5th PMOS (M6), separately
One end ground connection；
Described second transmission gate (TG2) is controlled by reverse duty cycle signals, the source electrode of one termination the 5th PMOS (M6),
One end of another termination the 3rd transmission gate (TG3)；
Described 3rd transmission gate (TG3) by duty cycle signals control, the negative input end of its another termination operational amplifier；
The junction point of described second transmission gate (TG2) and the 3rd transmission gate (TG3) is by the 3rd electric capacity (C3) ground connection afterwards；
The positive input of described operational amplifier connects reference voltage, the grid of its output termination the first NMOS tube (M1)；
The drain electrode of described first NMOS tube (M1) connects the drain electrode of the first PMOS (M2), the first NMOS tube (M1)
Source ground；
Described 4th transmission gate (TG4) is controlled by reverse duty cycle signals, and one terminates the drain electrode of the second PMOS (M3),
One end of another termination the 5th transmission gate (TG5)；
The junction point that described 4th transmission gate (TG4) and two PMOS (M3) drain is by the second electric capacity (C2) ground connection afterwards；
Described 5th transmission gate (TG5) by duty cycle signals control, its another terminate the grid of the second NMOS tube (M7),
5th transmission gate (TG5) passes through the 4th electric capacity (C4) ground connection afterwards with the junction point of the second NMOS tube (M7) grid；
The drain electrode of described second NMOS tube (M7) connects the drain electrode of the 4th PMOS (M5), the second NMOS tube (M7)
Source electrode by resistance (Rs) ground connection afterwards；
Described secondary voltage signal generating circuit include the 6th transmission gate (TG6), the 7th transmission gate (TG7), the 5th electric capacity (C5),
6th electric capacity (C6) and trsanscondutance amplifier；
Described 6th transmission gate (TG6) is by pulse switch signal control, the input of one termination trsanscondutance amplifier, the other end
Ground connection；
Described 6th transmission gate (TG6) passes through the 5th electric capacity (C5) ground connection afterwards with the junction point of trsanscondutance amplifier input；
The junction point of described 6th transmission gate (TG6), trsanscondutance amplifier input and the 5th electric capacity (C5) meets the 3rd PMOS
The drain electrode of pipe (M4)；
The outfan of described trsanscondutance amplifier passes through the 6th electric capacity (C6) ground connection afterwards；
The junction point of described trsanscondutance amplifier outfan and the 6th electric capacity (C6) connects one end of the 7th transmission gate (TG7)；
Described 7th transmission gate (TG7) by pulse switch signal control, its other end ground connection；
The junction point of described trsanscondutance amplifier outfan, the 6th electric capacity (C6) and the 7th transmission gate (TG7) one end is secondary electricity
The outfan of pressure signal generating circuit.
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| CN201610258076.3A CN105896972B (en) | 2016-04-22 | 2016-04-22 | A kind of Adaptive Second slope compensation circuit for BUCK converters |
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| CN201610258076.3A CN105896972B (en) | 2016-04-22 | 2016-04-22 | A kind of Adaptive Second slope compensation circuit for BUCK converters |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667293A (en) * | 2018-07-09 | 2018-10-16 | 成都信息工程大学 | A Secondary Slope Compensation Circuit for Current Mode BUCK Converter |
| CN109149931A (en) * | 2018-08-29 | 2019-01-04 | 北京机械设备研究所 | Slope-error compensation circuit for peak value comparison method BUCK converter |
| CN113922636A (en) * | 2021-07-27 | 2022-01-11 | 西安理工大学 | Slope compensation circuit and compensation method for large load capacity of DC-DC converter |
| CN114665712A (en) * | 2021-11-30 | 2022-06-24 | 深圳思睿达微电子有限公司 | A Variable Slope Ramp Voltage Generator |
| CN114938139A (en) * | 2022-06-20 | 2022-08-23 | 电子科技大学 | Ripple control Buck converter based on dual-path switching current integrator |
| CN117691824A (en) * | 2023-10-20 | 2024-03-12 | 晟芯腾跃(北京)科技有限公司 | Current mode quadratic term slope compensation circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667293A (en) * | 2018-07-09 | 2018-10-16 | 成都信息工程大学 | A Secondary Slope Compensation Circuit for Current Mode BUCK Converter |
| CN109149931A (en) * | 2018-08-29 | 2019-01-04 | 北京机械设备研究所 | Slope-error compensation circuit for peak value comparison method BUCK converter |
| CN109149931B (en) * | 2018-08-29 | 2019-10-11 | 北京机械设备研究所 | Slope-error compensation circuit for peak value comparison method BUCK converter |
| CN113922636A (en) * | 2021-07-27 | 2022-01-11 | 西安理工大学 | Slope compensation circuit and compensation method for large load capacity of DC-DC converter |
| CN113922636B (en) * | 2021-07-27 | 2023-12-22 | 西安理工大学 | Large-load capacity slope compensation circuit and compensation method of DC-DC converter |
| CN114665712A (en) * | 2021-11-30 | 2022-06-24 | 深圳思睿达微电子有限公司 | A Variable Slope Ramp Voltage Generator |
| CN114938139A (en) * | 2022-06-20 | 2022-08-23 | 电子科技大学 | Ripple control Buck converter based on dual-path switching current integrator |
| CN114938139B (en) * | 2022-06-20 | 2023-05-26 | 电子科技大学 | Ripple control Buck converter based on dual-path switching current integrator |
| CN117691824A (en) * | 2023-10-20 | 2024-03-12 | 晟芯腾跃(北京)科技有限公司 | Current mode quadratic term slope compensation circuit |
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