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This paper presents a fully synthesizable digital controller for high-frequency low-power DC-DC switching mode power supply (SMPS). Key module of the digital controller is a Hybrid digital pulse-width modulator (DPWM), which takes advantage of Digital Clock Manager (DCM) phase-shift characteristics available in FPGA resource and combines a counter-comparator with multi-bit Delta-Sigma (Delta-Sigma)...
Digital pulse-width modulator (DPWM) is known as the critical module in digital controller application for high-frequency switching mode power supply (SMPS). This paper presents a new Hybrid DPWM architecture operating at high frequency with high resolution. The proposed DPWM takes advantage of the phase-shift function of Digital Clock Manager (DCM) in FPGA, and combines a counter-comparator with...
Digital pulse-width modulator (DPWM) is a crucial module for digitally controlled switching mode power supply (SMPS). High-resolution DPWM must be implemented under a reasonable clock frequency in order to satisfy the precision of output voltage and avoid limit cycles. Three methodologies which are the delay-line method, the delta-sigma (Delta-Sigma) method and the Hybrid method are respectively used...
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