Digital hybrid ripple-based constant on-time control for voltage regulator modules

Cheng, Kuang-Yao; Ye, Feng; Tian, Shuilin; Lee, Fred C.; Mattavelli, Paolo

doi:10.1109/apec.2011.5744619

Cited by 20 publications

(16 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, from (5)-(7), the control laws for the DVR with leading-edge, trailing-triangle, and leading-triangle modulations are given in terms of their duality items as (13)- (15), respectively, as shown in Table V.…”

Section: A Review and Unification Of Dvr Control Lawsmentioning

confidence: 99%

“…They can be derived by substituting d n−1 = D and d n = d n−1 into the DVR control laws (12)- (15) and considering the relation m 1 D = m 2 D . They can also be directly derived in a simple way according to the duality items of IDPR control laws (8)- (11).…”

Section: B Review and Unification Of Idvr Control Lawsmentioning

confidence: 99%

“…Enhanced-V 2 control was then proposed in [8] and [9] to handle with those issues, which combines the advantages of easy current sharing of peak current control and fast transient responses of V 2 control. V 2 control and enhanced-V 2 control are widely used in analog control and digital control [6], [7], [10]- [15]. Their characterization and performance are compared in [6] and [7].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Constant-Frequency Peak-Ripple-Based Control of Buck Converter in CCM: Review, Unification, and Duality

Zhou

Wang

2014

IEEE Trans. Ind. Electron.

View full text Add to dashboard Cite

The operation principles of peak current control, V 2 control, and enhanced-V 2 control of buck converter in continuous conduction mode are reviewed and compared. By the use of weight factors of inductor current and output voltage, they are unified as constant-frequency peak-ripple-based (CF-PR) analog control. It is revealed that conventional peak current control and V 2 control are two boundaries of the unified CF-PR control. The duality items between CF-PR control and constant-frequency valley-ripple-based (CF-VR) control are proposed. As the duality of CF-PR analog control, CF-VR analog control is investigated. Unified CF-PR and CF-VR digital control laws with different modulations and their stabilities are investigated in terms of the duality. Experimental results verify the theory analysis.Index Terms-Current-mode control, digital control, enhanced-V 2 control, pulsewidth modulation (PWM), ripplebased control, switching converter, V 2 control, V 2 C control. (S'10-M'12) received the B.S. degree in electronic and information engineering and the M.S. and Ph.D. degrees in electrical engineering from Southwest Jiaotong University, He is currently an Associate Professor with the School of Electrical Engineering, Southwest Jiaotong University. His current research interests include modulation and control techniques of power electronics systems, dynamical modeling and analysis of switching power converters, and renewable energy applications of power electronics.Jianping Xu (M'10) received the B.S. and Ph.D. degrees in electronic engineering from He is with the School of Electrical Engineering, Southwest Jiaotong University. His research interests include control techniques and modulation methods of switching-mode power supplies and modeling and simulation of switching dc-dc converters.

show abstract

Section: A Review and Unification Of Dvr Control Lawsmentioning

confidence: 99%

Section: B Review and Unification Of Idvr Control Lawsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Constant-Frequency Peak-Ripple-Based Control of Buck Converter in CCM: Review, Unification, and Duality

Zhou

Wang

2014

IEEE Trans. Ind. Electron.

View full text Add to dashboard Cite

show abstract

“…First, CPU consumes large repetitive step load. To reduce output voltage variation at load transient and reduce output capacitance, adaptive voltage position (AVP) function is required for voltage regulator (VR) [1][2][3][4][5][6][7][8][9][10][11][12][13]. Fig.…”

Section: Introductionmentioning

confidence: 99%

“…To meet the more stringent power requirement, digital control is adopted to provide on-chip and on-line frequency compensation for voltage regulators [8][9][10][11][12][13]. Digital control has the ability to implement more complex control functions, save component count, board area, and engineering time to change compensation components.…”

Section: Introductionmentioning

confidence: 99%

On-chip frequency compensation control scheme with independently parameters tuning and green native adaptive voltage position (GNAVP) for voltage regulators

Chen

Hsiao

et al. 2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

View full text Add to dashboard Cite

This paper proposes a novel on-chip frequency compensation control scheme with analog control loops and digital interface for voltage regulators. The novel control scheme provide on-chip frequency compensation with independently parameters changing by I 2 C interface, which saves component count, IC pin count, board area, and engineering time to change compensation components. Besides, the analog control loop avoids the issues of digital control loop such as cost and time delay. The control loop also adopts Green Native Adaptive Voltage Position (GNAVP) advantages of high light-load efficiency, good output voltage accuracy, and ease to achieve AVP for CPU power applications. The control scheme is implemented in controller IC for four-phase buck voltage regulator. Experiment results validate the concept. The output voltage is stable at steady-state operation, smooth at power state change, and achieves AVP at load transient. I.978-1-4799-5776-7/14/$31.00 ©2014 IEEE

show abstract

Improved transient response using high‐frequency feedback control circuit of the constant current ripple constant on‐time with native adaptive voltage positioning design for voltage regulators

Chen

Liang

et al. 2013

IET Power Electronics

View full text Add to dashboard Cite

Improved transient response using high-frequency feedback control (HFFC) circuit of the constant current ripple constant on-time (CCRCOT) with native adaptive voltage positioning design for voltage regulators (VRs) is proposed in this study. The concept uses the HFFC circuit to filter V out at the load transient to change the on-time width dynamically, preventing V out from dropping markedly. This proposal does not need an extra pin to achieve a quick response circuit. Finally, the multiphase VR with the HFFC circuit of the CCRCOT for the IC circuit of the proposed buck converter is implemented by experiment and simulation results to verify their viability and superiority.

show abstract

Digital hybrid ripple-based constant on-time control for voltage regulator modules

Cited by 20 publications

References 11 publications

Constant-Frequency Peak-Ripple-Based Control of Buck Converter in CCM: Review, Unification, and Duality

Constant-Frequency Peak-Ripple-Based Control of Buck Converter in CCM: Review, Unification, and Duality

On-chip frequency compensation control scheme with independently parameters tuning and green native adaptive voltage position (GNAVP) for voltage regulators

Improved transient response using high‐frequency feedback control circuit of the constant current ripple constant on‐time with native adaptive voltage positioning design for voltage regulators

Contact Info

Product

Resources

About