Design and Implementation of Fpga Based Digital Switching Controller for Dc-Dc Converters Used in System- On- A-Chip Applications
V.Radhika1, K. Baskaran2, K. Srinivasan3 
1Dr. V. Radhika, Department of Electronics & Instrumentation Engineering, Sri Ramakrishna Engineering College, Coimbatore, India
2Dr.K. Baskaran, Department of Electrical and Electronics Engineering, Algappa Chettiar Government College of Technology, Karaikudi
3Dr.K. Srinivasan, Department of Electronics & Instrumentation Engineering, Sri Ramakrishna Engineering College, Coimbatore, India

Manuscript received on 05 March 2019 | Revised Manuscript received on 12 March 2019 | Manuscript published on 30 July 2019 | PP: 2111-2015 | Volume-8 Issue-2, July 2019 | Retrieval Number: B2330078219 /19©BEIESP | DOI: 10.35940/ijrte.B2330.078219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: DC-DC converters are electronic devices that are used to change DC electrical power efficiently from one voltage level to another. This paper proposes a new Digital Pulse Width Modulator (DPWM) which generates variable duty cycle PWM pulse and it can be used as switching controller for DC-DC converters used in battery powered portable electronic and mobile devices. DPWM utilizes the advantage of Digital Clock Manager (DCM) present in FPGA to multiply the clock frequency to eliminate the clock skew. The proposed DPWM uses the four bit gray counter and one hot encoder with SR flip flop to generate the PWM pulse whose duty cycle can be varied according to the control signal. To verify the results DPWM was implemented in SPARTAN 3A.
Index Terms: Digital Clock Manager (DCM), FPGA, Gray Counter, Pulse Width Modulators

Scope of the Article: Routing, Switching and Addressing Techniques