Use of sigma-delta modulation to control EMI from switch-mode power supplies (2001)

by J Paramesh, A von Jouanne
Venue:Industrial Electronics, IEEE Transactions on, Volume: 48 Issue
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Transfer Function Design of Stable High-OrderSigma-Delta Modulators With . . .

by Cheng-chung Yang, Kuan-dar Chen, Wen-chyi Wang, Tai-haur Kuo , 2002
"... In this paper, a systematic method to design stable highorder sigma-delta modulator (SDM) transfer functions with no need of stability mechanisms is proposed. It is shown that a high-order SDM can be absolutely stable if the departure angles of the root locus of its noise-shaping function are proper ..."
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In this paper, a systematic method to design stable highorder sigma-delta modulator (SDM) transfer functions with no need of stability mechanisms is proposed. It is shown that a high-order SDM can be absolutely stable if the departure angles of the root locus of its noise-shaping function are properly designed. Tradeoffs between stability and performance of the SDMs are presented.