Title :
Improving efficiency of a pre-/post-switching regulator (PFC/PWM) at light loads using green-mode function
Author :
Hwang, Jeffrey ; Chee, Alland
Author_Institution :
Micro Linear Corp., San Jose, CA, USA
Abstract :
The efficiency of a pre-/post-switching regulator degrades as the power delivered to the load lessens. To improve the efficiency of a pre-/post-switching regulator at light loads, a green-mode function is proposed in this paper. By using a green-mode function, efficiency can be improved at lower power consumption by 8 to 25 percentage points depending on the power level being delivered to the load. Experimental results are provided to confirm the improvement in the efficiency
Keywords :
DC-DC power convertors; PWM power convertors; power factor correction; switching circuits; PFC; PWM DC-DC converter; efficiency improvement; green-mode function; light loads; post-switching regulator; power factor correction; power level; pre-switching regulator; Energy consumption; High power amplifiers; Logic; Operational amplifiers; Power supplies; Pulse width modulation; Regulators; Switches; Switching converters; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1998. APEC '98. Conference Proceedings 1998., Thirteenth Annual
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-4340-9
DOI :
10.1109/APEC.1998.653971
