公开(公告)号：US10734908B2

公开(公告)日：2020-08-04

申请号：US16427094

申请日：2019-05-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Bharath Kannan ,  Bing Lu

IPC: H02M3/335 ,  H02M1/08 ,  H03K19/20 ,  H02M1/00

Abstract: A synchronous rectifier control circuit includes a drain voltage input, a gate voltage output, a gate voltage generation circuit, a burst detection circuit, an on-time monitor circuit, and a burst mode reset circuit. The gate voltage generation circuit includes a first input coupled to the drain voltage input, and an output coupled to the gate voltage output. The burst detection circuit includes a first input coupled to the drain voltage input, and an output coupled to a second input of the gate voltage generation circuit. The on-time monitor circuit includes an input coupled to the output of the gate voltage generation circuit. The burst mode reset circuit includes a first input coupled to the drain voltage input, a second input coupled to an output of the on-time monitor circuit, and an output coupled to a second input of the burst detection circuit.

公开(公告)号：US11005381B2

公开(公告)日：2021-05-11

申请号：US16448024

申请日：2019-06-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Bing Lu ,  Bharath Kannan

IPC: H02M3/335 ,  H02M3/337 ,  H02M1/00

Abstract: A synchronous rectifier control circuit includes a drain voltage input, a first gate voltage output, a second gate voltage output, a gate voltage generation circuit, and a trigger control circuit. The gate voltage generation circuit includes a first input coupled to the drain voltage input, and an output coupled to the first gate voltage output. The trigger control circuit includes a first input coupled to the first gate voltage output, a second input coupled to the second gate voltage output, and an output coupled to a second input of the gate voltage generation circuit.