Title :
Consideration of operating frequency variation in a constant-on-time synchronous Buck converter
Author :
Chung-Ping Ku ; Lin, Weisi ; Dan Chen
Author_Institution :
E.E. Dept., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A constant on-time PWM control with input feed-forward results in ultra-fast transient response while maintaining relatively constant switching frequency over the entire input voltage range. However, in practical design case, the operating frequency is changed by various load conditions. In this paper, variation of the switching frequency in a constant on-time Buck converter was analyzed in details. Experimental results were proposed to verify the characteristics.
Keywords :
PWM power convertors; electric current control; feedforward; switching convertors; constant on-time PWM control; constant switching frequency; constant-on-time buck converter; operating frequency variation; synchronous buck converter; ultrafast transient response; Frequency conversion; Frequency synchronization; Inductors; Pulse width modulation; Regulators; Switching frequency; Voltage control; High frequency power converter; MOSFET; Power integrated circuit; Pulse Width Modulation (PWM); Switched-mode power supply;
Conference_Titel :
Power Electronics and Applications (EPE), 2013 15th European Conference on
Conference_Location :
Lille
DOI :
10.1109/EPE.2013.6634459
