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A Mixed-Signal Control for VRM applications
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| Author(s) |
MATTAVELLI Paolo; LEE Fred C.; GARCEA Giovanni; LEE Kisun |
| Abstract |
This paper proposes a mixed-signal control for Voltage Regulated Modules (VRMs), which is based on a digital voltage loop and a peak-modulator digitally controlled by a low-resolution Digital-to-Analog Converter (DAC). Improvement in the dynamic response and elimination of static quantization effects are obtained performing the peak-modulation on a weighted sum of output voltage and inductor current. The control features good dynamic performance, fixed switching frequency, small quantization effects, and low-complexity. Simulation and experimental results on a three-phase interleaved synchronous buck VRM confirm the performance of the proposed solution. |
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| Filename: | 0730 |
| Filesize: | 499 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-12 by System |
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