Improved Current-Sharing Imbalance Control Model Based on Magnetic Ferrite Inductance and a Gate Drive Circuit
Haitao Tian,
Yuhong Li,
Qiang Zhang,
Ningru Xiao,
Jingjing Wang,
Hongwei Liu,
Yuqiang Li
Affiliations
Haitao Tian
Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, School of Electronic and Information Engineering, Tiangong University, Tianjin 300387, China
Yuhong Li
Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, School of Electronic and Information Engineering, Tiangong University, Tianjin 300387, China
Qiang Zhang
Key Laboratory of Smart Grid of Ministry of Education, School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Ningru Xiao
School of Physical Science and Technology, Tiangong University, Tianjin 300387, China
Jingjing Wang
Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, School of Electronic and Information Engineering, Tiangong University, Tianjin 300387, China
Hongwei Liu
Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, School of Electronic and Information Engineering, Tiangong University, Tianjin 300387, China
Yuqiang Li
Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, School of Electronic and Information Engineering, Tiangong University, Tianjin 300387, China
The dynamic and static imbalance of parallel current sharing has held the concern of researchers in view of the variation in multiple parasitic parameters on high-frequency parallel switching mode power supply (SMPS). The joint simulations and suppression experiments on the parallel current-sharing imbalance of various parasitic parameters are investigated on the improved dual-pulse detection circuit platform to determine the method of detecting the parallel current-sharing imbalance ratio using the sum of the differential magnetic flux. An improved model of current-sharing imbalance control is presented consisting of magnetic ferrite inductance and a gate drive circuit. The main concerns are the suppression performance of drain, gate, and source parasitic inductance, gate–source capacitance, driving time and voltage, gate resistance, and delayed forward/reverse driving signals on the ratio of parallel current-sharing imbalance, respectively. The improved model effectively reduces the parallel current-sharing imbalance ratio by more than 5% and 2–4.2%, compared with using a gate drive circuit alone and using magnetic ferrite inductance solely.
