TW200744295A - Voltage regulator having current canceling compensation - Google Patents
Voltage regulator having current canceling compensationInfo
- Publication number
- TW200744295A TW200744295A TW095137301A TW95137301A TW200744295A TW 200744295 A TW200744295 A TW 200744295A TW 095137301 A TW095137301 A TW 095137301A TW 95137301 A TW95137301 A TW 95137301A TW 200744295 A TW200744295 A TW 200744295A
- Authority
- TW
- Taiwan
- Prior art keywords
- error amplifier
- output
- inverting input
- network
- pwm
- Prior art date
Links
Landscapes
- Dc-Dc Converters (AREA)
- Amplifiers (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
A voltage regulator which includes a network for improved compensation for reference voltage changes includes an IC including an error amplifier and a pulse width modulator (PWM), wherein an input of the PWM is coupled to an output of the error amplifier. A low pass filter comprising an inductor is in series with a grounded capacitor coupled to an output of the PWM, wherein an output of the regulator (VOUT) is at a node between the inductor and the capacitor. A first feedback network is disposed between VOUT and inverting input of the error amplifier and a second feedback network is disposed between an output of the error amplifier and the inverting input of the error amplifier. A current cancellation network is coupled to the inverting input of the error amplifier. The current cancellation network injects a canceling current into the inverting input that is substantially equal in magnitude and opposite in polarity to current flowing through the second feedback network triggered by a change in reference voltage when applied to the error amplifier.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US80294906P | 2006-05-24 | 2006-05-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200744295A true TW200744295A (en) | 2007-12-01 |
TWI325679B TWI325679B (en) | 2010-06-01 |
Family
ID=38906860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW95137301A TWI325679B (en) | 2006-05-24 | 2006-10-11 | Voltage regulator and method of current cancellation for a voltage regulator |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN101079577B (en) |
TW (1) | TWI325679B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI456882B (en) * | 2010-06-25 | 2014-10-11 | Richtek Technology Corp | Voltage regulator and control circuit and method therefor |
TWI473397B (en) * | 2012-11-01 | 2015-02-11 | Luxmill Electronic Co Ltd | Current control circuit and control method for a power converter |
CN106300917A (en) * | 2016-10-09 | 2017-01-04 | 深圳市钜能科技有限公司 | Negative-feedback circuit |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5264782A (en) * | 1992-08-10 | 1993-11-23 | International Business Machines Corporation | Dropout recovery circuit |
US6181120B1 (en) * | 1999-09-01 | 2001-01-30 | Intersil Corporation | Current mode dc/dc converter with controlled output impedance |
US6388451B1 (en) * | 2000-08-16 | 2002-05-14 | Ford Global Technologies, Inc. | Leakage current cancellation device |
US6437999B1 (en) * | 2001-05-12 | 2002-08-20 | Technical Witts, Inc. | Power electronic circuits with ripple current cancellation |
-
2006
- 2006-10-11 TW TW95137301A patent/TWI325679B/en not_active IP Right Cessation
- 2006-10-23 CN CN2006101365836A patent/CN101079577B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN101079577B (en) | 2012-05-16 |
CN101079577A (en) | 2007-11-28 |
TWI325679B (en) | 2010-06-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8217637B2 (en) | Frequency compensation based on dual signal paths for voltage-mode switching regulators | |
EP2538535B1 (en) | Control device for a resonant converter | |
EP1962413A1 (en) | Ripple compensator and switching converter comprising such a ripple compensator | |
WO2013158128A1 (en) | High side current sense amplifier | |
US10069406B2 (en) | EMI filter and switching power supply with the same | |
CN105071651B (en) | A kind of loop circuit compensation method and circuit | |
US9110489B2 (en) | Loss-less coil current estimator for peak current mode control SMPS | |
ITMI20121231A1 (en) | BURST-MODE CONTROL METHOD FOR LOW CONSUMPTION IN ENTRY IN RESONATING CONVERTERS AND ITS CONTROL DEVICE | |
CN102654828B (en) | Method for increasing response speed of analog adder, analog adder and transformer | |
US20150123627A1 (en) | Power converters and compensation circuits thereof | |
CN106787652A (en) | A kind of dynamic suitable for buck converter output DC maladjustment eliminates circuit | |
Yan et al. | V 2 control with capacitor current ramp compensation using lossless capacitor current sensing | |
TW200744293A (en) | DC-DC converters having improved current sensing and related methods | |
ATE519275T1 (en) | HYBRID FEEDBACK CONTROLLED OSCILLATION MODULATOR AND SWITCHING POWER AMPLIFIER SYSTEM | |
TW200744295A (en) | Voltage regulator having current canceling compensation | |
ITMI20081066A1 (en) | METHOD OF CONTROL OF A VOLTAGE REGULATOR, IN PARTICULAR A MULTI-PHASE INTERLEAVING CONVERTER, AND A RELATIVE CONTROLLER | |
Johansson | DC-DC converters-dynamic model design and experimental verification | |
CN103312198A (en) | Conducting time compensation for switch power converter | |
US7535211B2 (en) | Voltage regulator having current canceling compensation | |
Park et al. | Analysis of EMI reduction methods of DC-DC buck converter | |
ATE523956T1 (en) | CONTROLLED CURRENT TRANSFORMER | |
RU2239225C2 (en) | Method for control of impulse voltage regulator | |
Habibi et al. | Application of class D power amplifiers in low power potentiostat circuits | |
CN102355220B (en) | Trap filter and low pass filter | |
Suntio et al. | Design of EMI filter for stability and performance in switched-mode converters |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |