Light Load Efficiency Improvement in High Frequency DC-DC Buck Converter Using Dynamic Width Segmentation of Power MOSFET

2014 ◽  
Author(s):  
N.J. Metilda Sagaya Mary ◽  
Ashis Maity ◽  
Amit Patra
Keyword(s):  
High Frequency ◽  
Buck Converter ◽  
Efficiency Improvement ◽  
Power Mosfet ◽  
Light Load

scholarly journals Light-Load Efficiency Improvement for Ultrahigh Step-Down Converter Based on Skip Mode

Electronics ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 355
Author(s):  
Yeu-Torng Yau ◽  
Chao-Wei Wang ◽  
Kuo-Ing Hwu
Keyword(s):  
Integrated Circuit ◽  
Common Ground ◽  
Switching Frequency ◽  
Efficiency Improvement ◽  
Pulse Width Modulated ◽  
Light Load ◽  
Mode 2 ◽  
Skip Mode ◽  
Step Down ◽  
The Cost

In this paper, two light-load efficiency improvement methods are presented and applied to the ultrahigh step-down converter. The two methods are both based on skip mode control. Skip Mode 1 only needs one half-bridge driver integrated circuit (IC) to drive three switches, so it has the advantages of easy signal control and lower cost, whereas Skip Mode 2 requires one half-bridge driver integrated circuit IC, one common ground driver IC, and three independent timing pulse-width-modulated (PWM) signals to control three switches, so the cost is higher and the control signals are more complicated, but Skip Mode 2 can obtain slightly higher light-load efficiency than Skip Mode 1. Although the switching frequency used in these methods are reduced, the transferred energy is unchanged, but the output voltage ripple is influenced to some extent.

scholarly journals Power MOSFET Linearizer of a High-Voltage Power Amplifier for High-Frequency Pulse-Echo Instrumentation

Sensors ◽  
2017 ◽  
Vol 17 (4) ◽  
pp. 764 ◽  
Author(s):  
Hojong Choi ◽  
Park Woo ◽  
Jung-Yeol Yeom ◽  
Changhan Yoon
Keyword(s):  
Power Amplifier ◽  
High Voltage ◽  
High Frequency ◽  
Power Mosfet ◽  
Pulse Echo ◽  
Frequency Pulse
Sign in / Sign up

Export Citation Format

Share Document