Design of a Digital PWM Controller for a Soft Switching SEPIC Converter

Maged N. F. Nashed

Design of a Digital PWM Controller for a Soft Switching SEPIC Converter

Maged N. F. Nashed

Vol. 4, No. 3, pp. 152-160, Jul. 2004

10.6113/JPE.2004.4.3.152

SEPIC converter

zero voltage-Transition-PWM switching

and a digital controller for a high-frequency switching power

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Abstract

This paper presents analysis, modeling, and design of a low-harmonic, isolated, active-clamped SEPIC for future avionics applications. Simpler converter dynamics, high switching frequency, zero voltage-Transition-PWM switching, and a single-layer transformer construction result. This paper describes complete design of a digital controller for a high-frequency switching power supply. Guidelines for the minimum required resolution of the analog-to-digital converter, the pulse-width modulator, and the fixed-point computational unit is derived. A design example based on a SEPIC converter operating at the high switching frequency is presented. The controller design is based on direct digital design approach and standard root-locus techniques.

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Cite this article

[IEEE Style]

M. N. F. Nashed, "Design of a Digital PWM Controller for a Soft Switching SEPIC Converter," Journal of Power Electronics, vol. 4, no. 3, pp. 152-160, 2004. DOI: 10.6113/JPE.2004.4.3.152.

[ACM Style]

Maged N. F. Nashed. 2004. Design of a Digital PWM Controller for a Soft Switching SEPIC Converter. Journal of Power Electronics, 4, 3, (2004), 152-160. DOI: 10.6113/JPE.2004.4.3.152.