Title:
ハイサイドドライバのための逆方向電流保護を提供する回路
Document Type and Number:
Japanese Patent JP7251015
Kind Code:
B2
Abstract:
An electronic control unit (ECU) operates between first and second voltage rails and includes an amplifier circuit and a single current sense circuit coupled to carry a signal to a bus pin and to protect the bus pin from both a short to ground and a short to battery. The single current sense circuit includes a switch circuit that passes the signal to the bus pin and a forward current sensing circuit that provides a second current that is proportional to an output current at the bus pin. The forward current sensing circuit causes the second current to be substantially zero when voltage on the bus pin is above a given value. The single current sense circuit also includes a forward current protection circuit and a reverse current switching circuit that receives the second current and closes a connection to the second voltage when the second current is zero.
Inventors:
Sri Navanesa Krishna Easwaran
Timothy Paul Duryea
Timothy Paul Duryea
Application Number:
JP2020546995A
Publication Date:
April 04, 2023
Filing Date:
March 05, 2019
Export Citation:
Assignee:
Texas Instruments Incorporated
International Classes:
H02H3/08; B60R16/02; H02H7/18; H02H7/20; H02J7/00
Domestic Patent References:
| JP2015106965A |
Foreign References:
| US20190058320 |
Attorney, Agent or Firm:
Hitoshi Sato