Abstract
This paper proposes digital frequency modulation control scheme of synchronous buck converter with boundary conduction mode and digital control strategy for high efficiency over wide load range. Synchronous converter, which can reduce conduction loss through diode, is preferred in high current application. However, this is inefficient at light load condition. Therefore, to achieve the high efficiency over wide range, multi-mode strategy is proposed using digital control. Modes are classified four types, from continuous conduction mode to boundary conduction mode, discontinuous conduction mode and pulse skipping mode as load decreases. The proposed method is implemented by TI's TMS320F28335 DSP chip. For the experimental verification, a 100W synchronous buck converter with 38V input and 20V/5A output is implemented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
