Capacitor current fixed off-time control for buck converter with fast response and output capacitor ESR independence

2016 ◽  
Author(s):  
Xi Zhang ◽  
Jianping Xu ◽  
Guohua Zhou ◽  
Yiming Chen
Keyword(s):  
Fast Response ◽  
Buck Converter ◽  
Time Control ◽  
Output Capacitor ◽  
Off Time

Critical ESR of output capacitor for stability of fixed off‐time controlled buck converter

2013 ◽  
Vol 49 (4) ◽  
pp. 287-288 ◽  
Author(s):  
B.C. Bao ◽  
X. Zhang ◽  
J.P. Xu ◽  
J.P. Wang
Keyword(s):  
Buck Converter ◽  
Output Capacitor ◽  
Off Time

scholarly journals Stability analysis of equivalent series resistance of output capacitor in fixed off-time controlled Buck converter

2012 ◽  
Vol 61 (16) ◽  
pp. 160503
Author(s):  
Zhang Xi ◽  
Bao Bo-Cheng ◽  
Wang Jin-Ping ◽  
Ma Zheng-Hua ◽  
Xu Jian-Ping
Keyword(s):  
Stability Analysis ◽  
Series Resistance ◽  
Buck Converter ◽  
Equivalent Series Resistance ◽  
Output Capacitor ◽  
Off Time

scholarly journals A Current-Mode Four-Phase Synchronous Buck Converter with Dynamic Dead-Time Control

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Jun Tang ◽  
Tian Guo ◽  
Jung Sik Kim ◽  
Jeongjin Roh
Keyword(s):  
Dead Time ◽  
Current Mode ◽  
Buck Converter ◽  
Time Control ◽  
A Current

scholarly journals Analysis and Design for Output Voltage Regulation in Constant-on-Time-Controlled Fly-Buck Converter

Electronics ◽  
2021 ◽  
Vol 10 (16) ◽  
pp. 1886
Author(s):  
Younghoon Cho ◽  
Paul Jang
Keyword(s):  
Output Voltage ◽  
Voltage Regulation ◽  
Design Guidelines ◽  
Buck Converter ◽  
Design Guideline ◽  
Analysis And Design ◽  
Flyback Converter ◽  
Auxiliary Power ◽  
Primary Output ◽  
Output Capacitor

Fly-buck converter is a multi-output converter with the structure of a synchronous buck converter structure on the primary side and a flyback converter structure on the secondary side, and can be utilized in various applications due to its many advantages. In terms of control, the primary side of the fly-buck converter has the same structure as a synchronous buck converter, allowing the constant-on-time (COT) control to be applied to the fly-buck converter. However, due to the inherent energy transfer principle, the primary-side output voltage regulation of COT controlled fly-buck converters may be poor, which can deteriorate the overall converter performance. Therefore, the primary output capacitor must be carefully designed to improve the voltage regulation characteristics. In this paper, a theoretical analysis of the output voltage regulation in COT controlled fly-buck converter is conducted, and based on this, a design guideline for the primary output capacitor considering the output voltage regulation is presented. The validity of the analysis and design guidelines was verified using a 5 W prototype of the COT controlled fly-buck converter for telecommunication auxiliary power supply.

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