CLC number: TN4
On-line Access: 2013-08-02
Received: 2012-12-03
Revision Accepted: 2013-04-10
Crosschecked: 2013-07-12
Cited: 9
Clicked: 7812
Jian-ping Qiu, Le-nian He, Yu-lin Wang. A multimode digital controller IC for flyback converter with high accuracy primary-side feedback[J]. Journal of Zhejiang University Science C, 2013, 14(8): 652-662.
@article{title="A multimode digital controller IC for flyback converter with high accuracy primary-side feedback",
author="Jian-ping Qiu, Le-nian He, Yu-lin Wang",
journal="Journal of Zhejiang University Science C",
volume="14",
number="8",
pages="652-662",
year="2013",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.C1200344"
}
%0 Journal Article
%T A multimode digital controller IC for flyback converter with high accuracy primary-side feedback
%A Jian-ping Qiu
%A Le-nian He
%A Yu-lin Wang
%J Journal of Zhejiang University SCIENCE C
%V 14
%N 8
%P 652-662
%@ 1869-1951
%D 2013
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.C1200344
TY - JOUR
T1 - A multimode digital controller IC for flyback converter with high accuracy primary-side feedback
A1 - Jian-ping Qiu
A1 - Le-nian He
A1 - Yu-lin Wang
J0 - Journal of Zhejiang University Science C
VL - 14
IS - 8
SP - 652
EP - 662
%@ 1869-1951
Y1 - 2013
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.C1200344
Abstract: A digital controller IC for the flyback converter with primary-side feedback is proposed. The controller is used for adapter charger or LED driver applications. To obtain high accuracy for the primary-side feedback, a digital primary-side sensing technology is adopted, which can auto-track the knee point of the primary auxiliary winding voltage. Furthermore, an internal digital compensator eliminates the need for external loop compensation components while achieving excellent line and load regulation. The controller could output both constant voltage and constant current depending on the load current. Pulse width modulation and pulse frequency modulation are used in constant voltage mode while quasi-resonant control is used in constant current mode. The digital controller is validated by using FPGA.
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