公开(公告)号：US20190109539A1

公开(公告)日：2019-04-11

申请号：US16051003

申请日：2018-07-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wenkai WU ,  Shishuo ZHAO ,  Weidong ZHU

IPC: H02M3/158 ,  H02M3/157 ,  G06F1/26

Abstract: An apparatus includes first and second power converter stages, each stage having a primary side and a secondary side. The primary side of the first stage includes a switch T1 A coupled to a voltage source and a switch T3A coupled to the switch T1 A. The primary side of the second stage includes a switch T2A coupled to the switch T3A and a switch T4A coupled to the switch T3A and to the voltage source. The apparatus includes a control circuit to control an on/off time of the switches. The control circuit includes four gate driver controllers to control the on/off time of the switches and a current sharing control section to increase or decrease the on time of a switch based on a comparison of a current through one of multiple output inductors to an average current through the multiple output inductors.