Buck Converter

버전 1.0.0 (18.4 KB) 작성자: Dr.GADDALA JAYA RAJU
A Buck converter steps down a DC voltage from the input to the output
다운로드 수: 595
업데이트 날짜: 2019/12/4

라이선스 보기

Working principle
A Buck converter steps down a DC voltage from the input to the output. The circuit operation depends on the conduction state of the MOSFET:
On-state: The current through the inductor increases and the diode blocks.
Off-state: Since the current through the inductor can not abruptly change the diode must carry the current so it commutates and begins conducting. Energy is transferred from the inductor to the capacitor resulting in a decreasing inductor current. During steady state the circuit is said to operate:

in discontinuous conduction mode if the inductor current reaches zero and
in continuous conduction mode if the inductor current never reaches zero.
The circuit has two limits of operation. For a PWM duty cycle D ➝ 0 the output voltage equals zero, and for D ➝ 1 the output voltage equals Vin. In between those limits the output voltage in continuous conduction mode is given by: Vout = D · Vin.
Note that the parallel combination of inductor and capacitor as shown above acts as a second order low pass filter reducing the voltage ripple at the output.
Experiments
Change the PWM duty cycle of the converter from 0.3 to 0.5 and observe how the average output voltage changes from 7.2 V to 12 V.
Change the resistance value from 5 Ω to 50 Ω and observe how the converter goes into discontinuous conduction mode.

인용 양식

Dr.GADDALA JAYA RAJU (2024). Buck Converter (https://www.mathworks.com/matlabcentral/fileexchange/73557-buck-converter), MATLAB Central File Exchange. 검색됨 .

MATLAB 릴리스 호환 정보
개발 환경: R2016a
모든 릴리스와 호환
플랫폼 호환성
Windows macOS Linux
커뮤니티
 Power Electronics Control 커뮤니티에 더 많은 파일이 있습니다

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!
버전 게시됨 릴리스 정보
1.0.0