公开(公告)号：US11217992B2

公开(公告)日：2022-01-04

申请号：US16843324

申请日：2020-04-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kae Ann Wong ,  Siang Tong Tan ,  Luis Ariel Malave-Perez ,  Mikko Topi Loikkanen ,  Mitsuyori Saito ,  Angelo William Pereira

IPC: H02H9/04 ,  H02H1/00

Abstract: A system includes a power supply source and a power control circuit coupled to the power supply source, in which the power control circuit includes a pass field-effect transistor (FET). The system also includes a short-to-ground protection circuit coupled to an output of the pass FET. The short-to-ground protection circuit includes a sense circuit configured to detect when a magnitude and a change rate of a voltage drop at the output of the pass FET is greater than respective thresholds. The short-to-ground protection circuit also includes a control node at the output of the sense circuit. The sense circuit is configured to induce a control current at the control node in response to the magnitude and the change rate of a voltage drop at the output of the pass FET being greater than respective thresholds. The control current is used to turn off the pass FET.

公开(公告)号：US20230188037A1

公开(公告)日：2023-06-15

申请号：US18065972

申请日：2022-12-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Antonio Priego ,  Gerhard Thiele ,  Johann-Erich Bayer ,  Mitsuyori Saito ,  Rida Assaad ,  Angelo Pereira

IPC: H02M3/158 ,  H02M1/088

CPC classification number: H02M3/158 ,  H02M1/088

Abstract: In described example, a circuit includes an error amplifier that receives a reference voltage and an output voltage, and generates an error signal. A comparator receives the error signal and a feedback signal, and generates a primary signal. A logic circuit is coupled to an output terminal of the comparator, and receives a clocking pulse. A clocking circuit is coupled to one of a first and a second output terminal of the logic circuit. The clocking circuit receives a clock signal and generates the clocking pulse. A driver circuit is coupled to the logic circuit. A switching circuit, coupled to the driver circuit, receives an input voltage and generates a switching voltage at a switching node. The switching circuit having a first switch coupled to a second switch at the switching node.