Linear-Non-Linear AVP Control with Larger Inductance for VRM

This paper presents a Linear-Non-Linear AVP Control with larger inductance for VRM applications. As the current ripple will cause conduction and switch related losses, especially when the input voltage gets higher, a larger inductance could reduce the current ripple to improve the efficiency, meanwh...

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Bibliographic Details
Main Authors: Yuan, W., Zhang, G.X., Xie, X.G., Zhang, J.M., Qian, Z.M.
Format: Conference Proceeding
Language:English
Subjects:
Capacitors
Inductance
Low voltage
Microprocessors
Prototypes
Steady-state
Switches
Switching converters
Transient response
Voltage control
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Summary:This paper presents a Linear-Non-Linear AVP Control with larger inductance for VRM applications. As the current ripple will cause conduction and switch related losses, especially when the input voltage gets higher, a larger inductance could reduce the current ripple to improve the efficiency, meanwhile the Linear-Non-Linear Control could avoid the duty saturation caused by large inductance, so as to get a good transient response. A 12 V-1.6 V/20 A prototype demonstrates that the Linear-Non-Linear AVP control with larger inductance could have a better efficiency than the common AVP control with critical inductance without compromising the transient response.
ISSN:1048-2334
2470-6647
DOI:10.1109/APEC.2009.4802636