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Review Papers | Electronics & Communication Engineering | India | Volume 4 Issue 5, May 2015

Generation of a High Resolution Digital Pulse-Width Modulator through Digital Control in General Purpose Field Programmable Gate Array

K. Sohel Rana | Mhaske Kanchan Vikram

Abstract: Pulse width modulators are the basic building block in digital control architectures of any power converters. The design of power converters requires a high resolution high frequency pulse width modulators (HRPWMs) in order to reduce the size and cost, improved dynamic behaviour and power density. Hence, this paper proposes a review of digital pulse-width modulation (DPWM) architecture that takes advantage of the field programmable gate array (FPGA) advanced characteristics, especially the Internal Logic Blocks (Internal Carry Chain) present in the Virtex 4 FPGA and the Digital Clock Manager (DCM) present in the low cost Spartan - 3E FPGA. Given the interest of obtaining high-resolution DPWMs, a lot of different architectures have been proposed in the last years, and even a classification of them has appeared. These architectures are designed and compared to analyze the performance.

Keywords: DPWM, DCM Block, Delay line, Digital Control, Signal Resolution

Edition: Volume 4 Issue 5, May 2015,

Pages: 860 - 864