Unified model of voltage/current mode control to predict saddle-node bifurcation

Abstract

A unified model of voltage mode control (VMC) and current mode control (CMC) is proposed to predict the saddle-node bifurcation (SNB). Exact SNB boundary conditions are derived, and can be further simplified in various forms for design purpose. Many approaches, including steady-state, sampled-data, average, harmonic balance, and loop gain analyses are applied to predict SNB. Each approach has its own merits and complement the other approaches.

Submitted to International Journal of Circuit Theory and Applications on December 23, 2010; Manuscript ID: CTA-10-0257

References in corpus (1)

• Closed-Form Critical Conditions of Saddle-Node Bifurcations for Buck Converters

Cited by in corpus (3)

• Boundary Conditions of Subharmonic Oscillations in Fixed-Switching-Frequency DC-DC Converters
• Bifurcation Boundary Conditions for Switching DC-DC Converters Under Constant On-Time Control
• Using Nyquist or Nyquist-Like Plot to Predict Three Typical Instabilities in DC-DC Converters