公开(公告)号：US11342835B2

公开(公告)日：2022-05-24

申请号：US16736235

申请日：2020-01-07

Applicant: Texas Instruments Incorporated

Inventor： Yihuang Lin ,  Abhijeeth Aarey Premanath ,  Anant Shankar Kamath

IPC: H02M1/32 ,  H02M7/06

Abstract: A circuit for providing input surge protection in a digital input module, the circuit comprising a surge protection input stage, including a bridge rectifier coupled to receive the bidirectional input signal, and coupled to the unidirectional input of the digital input module. The bridge rectifier comprises TVS rectifiers TVS1 and TVS2, and diode rectifiers D2 and D3, intercoupled in a bridge rectifier configuration in which: TVS1 and TVS4 are transient voltage suppression diodes; and rectifiers D2 and D3 are rectifier diodes. Diodes TVS1 and TVS4 can be implemented as either respective unidirectional TVS diodes; or a single bidirectional TVS diode. The digital input module can be a digital input receiver, or a opto-isolator/coupler, or other digital input module.

公开(公告)号：US20210211039A1

公开(公告)日：2021-07-08

申请号：US16736235

申请日：2020-01-07

Applicant: Texas Instruments Incorporated

Inventor： Yihuang Lin ,  Abhijeeth Aarey Premanath ,  Anant Shankar Kamath

IPC: H02M1/32 ,  H02M7/06

Abstract: A circuit for providing input surge protection in a digital input module, the circuit comprising a surge protection input stage, including a bridge rectifier coupled to receive the bidirectional input signal, and coupled to the unidirectional input of the digital input module. The bridge rectifier comprises TVS rectifiers TVS1 and TVS2, and diode rectifiers D2 and D3, intercoupled in a bridge rectifier configuration in which: TVS1 and TVS4 are transient voltage suppression diodes; and rectifiers D2 and D3 are rectifier diodes. Diodes TVS1 and TVS4 can be implemented as either respective unidirectional TVS diodes; or a single bidirectional TVS diode. The digital input module can be a digital input receiver, or a opto-isolator/coupler, or other digital input module.