TY - GEN
T1 - A novel zero-current-detector for DCM operation in synchronous converter
AU - Gao, Yuan
AU - Wang, Shenglei
AU - Li, Haiqi
AU - Chen, Leicheng
AU - Fan, Shiquan
AU - Geng, Li
PY - 2012
Y1 - 2012
N2 - Discontinuous-conduction mode (DCM) operation is usually employed in DC-DC converters for small inductor on printed circuit board (PCB) and high efficiency at light load. However, it is normally difficult for synchronous converter to realize the DCM operation, especially in high frequency applications, which requires a high speed and high precision comparator to detect the zero crossing point at cost of extra power losses. In this paper, a novel zero current detector (ZCD) circuit with an adaptive delay control loop for high frequency synchronous buck converter is presented. Compared to the conventional ZCD, proposed technique is proven to offer 8.5% efficiency enhancement when performed in a buck converter at the switching frequency of 4MHz and showed less sensitivity to the transistor mismatch of the sensor circuit.
AB - Discontinuous-conduction mode (DCM) operation is usually employed in DC-DC converters for small inductor on printed circuit board (PCB) and high efficiency at light load. However, it is normally difficult for synchronous converter to realize the DCM operation, especially in high frequency applications, which requires a high speed and high precision comparator to detect the zero crossing point at cost of extra power losses. In this paper, a novel zero current detector (ZCD) circuit with an adaptive delay control loop for high frequency synchronous buck converter is presented. Compared to the conventional ZCD, proposed technique is proven to offer 8.5% efficiency enhancement when performed in a buck converter at the switching frequency of 4MHz and showed less sensitivity to the transistor mismatch of the sensor circuit.
UR - https://www.scopus.com/pages/publications/84864835969
U2 - 10.1109/ISIE.2012.6237066
DO - 10.1109/ISIE.2012.6237066
M3 - 会议稿件
AN - SCOPUS:84864835969
SN - 9781467301589
T3 - IEEE International Symposium on Industrial Electronics
SP - 99
EP - 104
BT - Proceedings - 2012 IEEE International Symposium on Industrial Electronics, ISIE 2012
T2 - 21st IEEE International Symposium on Industrial Electronics, ISIE 2012
Y2 - 28 May 2012 through 31 May 2012
ER -