公开(公告)号：US20190229724A1

公开(公告)日：2019-07-25

申请号：US16371331

申请日：2019-04-01

Applicant: Texas Instruments Incorporated

Inventor： Xiong Li ,  Anant Kamath

IPC: H03K17/567 ,  H03K17/18 ,  G01R31/28

CPC classification number: H03K17/567 ,  G01R31/2608 ,  G01R31/2621 ,  G01R31/2817 ,  G01R31/2837 ,  G01R31/2849 ,  G01R31/42 ,  H03K17/18

Abstract: An isolated insulated gate bipolar transistor (IGBT) gate driver is provided which integrates circuits, in-module, to support the measurements of threshold voltage, and collector-emitter saturation voltage of IGBTs. The measured gate threshold and collector-emitter saturation voltage can be used as precursors for state of health predictions for IGBTs. During the measurements, IGBTs are biased under specific conditions chosen to quickly elicit collector-emitter saturation and gate threshold information. Integrated analog-to-digital converter (ADC) circuits are used to convert measured analog signals to a digital format. The digitalized signals are transferred to a micro controller unit (MCU) for further processing through serial peripheral interface (SPI) circuits.

公开(公告)号：US20180102773A1

公开(公告)日：2018-04-12

申请号：US15728230

申请日：2017-10-09

Applicant: Texas Instruments Incorporated

Inventor： Xiong Li ,  Anant Kamath

IPC: H03K17/567 ,  G01R31/28

CPC classification number: H03K17/567 ,  G01R31/2837 ,  H03K17/18

Abstract: An isolated insulated gate bipolar transistor (IGBT) gate driver is provided which integrates circuits, in-module, to support the measurements of threshold voltage, and collector-emitter saturation voltage of IGBTs. The measured gate threshold and collector-emitter saturation voltage can be used as precursors for state of health predictions for IGBTs. During the measurements, IGBTs are biased under specific conditions chosen to quickly elicit collector-emitter saturation and gate threshold information. Integrated analog-to-digital converter (ADC) circuits are used to convert measured analog signals to a digital format. The digitalized signals are transferred to a micro controller unit (MCU) for further processing through serial peripheral interface (SPI) circuits.