公开(公告)号：US11411424B2

公开(公告)日：2022-08-09

申请号：US16858335

申请日：2020-04-24

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Huawen Jin ,  Kenneth J. Maggio ,  Thomas James Jung, Jr.

IPC: H02J7/00 ,  H02J7/34 ,  H02M3/07 ,  H03K17/0412 ,  H03K17/041 ,  H02M1/00

Abstract: This disclosure relates to a system that includes a boost circuit comprising a boost capacitor. The boost circuit is configured to provide a boost voltage at a first terminal of the boost capacitor by increasing the boost voltage at the first terminal to exceed a target voltage for a given charge cycle. A boost switch is configured to supply the boost voltage from the first terminal to a charge node for turning on a transistor, which is coupled to the charge node, based on a boost signal during the given charge cycle. A pull-down circuit is configured to control discharge of the charge node to a clamp voltage that is sufficient to turn off the transistor for the given charge cycle and to facilitate charging of the charge node in a next charge cycle.