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High-frequency digital PWM controller IC for DC-DC converters

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4 Author(s)
Patella, B.J. ; Syst. & VLSI Technol. Div., Hewlett-Packard Co., Fort Collins, CO, USA ; Prodic, A. ; Zirger, A. ; Maksimovic, D.

This paper describes a complete digital PWM controller IC for high-frequency switching converters. Novel architecture and configurations of the key building blocks are A/D converter, compensator, and digital pulse-width modulator, are introduced to meet the requirements of tight output voltage regulation, high-speed dynamic response, and programmability without external passive components. The implementation techniques are experimentally verified on a prototype chip that takes less than 1 mm2 of silicon area in a standard 0.5 μ digital complementary metal oxide semiconductor (CMOS) process and operates at the switching frequency of 1 MHz.

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Power Electronics, IEEE Transactions on  (Volume:18 ,  Issue: 1 )