Title :
A High-Efficiency AC-to-DC Adaptor With a Low Standby Power Consumption
Author :
Lo, Yu-Kang ; Yen, Shang-Chin ; Lin, Chung-Yi
Author_Institution :
Nat. Taiwan Univ. of Sci. & Technol., Taipei
Abstract :
A two-stage burst mode control scheme for an AC-to-DC adaptor is proposed in this paper. An upper limit for the output voltage is set to turn off both AC/DC and DC/DC controllers at no load. The burst-mode operations of the DC/DC and the AC/DC converters are in turn enabled when reaching the lower limit of the output voltage. Load analysis at standby mode is performed. A 50-mW no-load power loss is observed on an 80 W/12 V prototype adaptor.
Keywords :
AC-DC power convertors; DC-DC power convertors; emergency power supply; power consumption; AC-to-DC adaptor; DC/DC controllers; load analysis; low standby power consumption; power 50 mW; power 80 W; two-stage burst mode control scheme; voltage 12 V; Circuits; Energy consumption; Lighting control; Low voltage; Power supplies; Prototypes; Reactive power; Standards development; Voltage control; Zero voltage switching; Adaptor; low standby power; two-stage burst mode control;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2007.907673
