The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 26, 2022

Filed:

Jan. 13, 2021
Applicant:

Infineon Technologies Ag, Neubiberg, DE;

Inventor:

Werner Roessler, Neufahrn, DE;

Assignee:

Infineon Technologies AG, Neubiberg, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/66 (2006.01); H01L 23/31 (2006.01); H01L 23/58 (2006.01); H01L 23/66 (2006.01); G01R 31/26 (2020.01); H01L 23/495 (2006.01); H03K 17/687 (2006.01);
U.S. Cl.
CPC ...
G01R 31/2621 (2013.01); H01L 23/49562 (2013.01); H03K 17/6871 (2013.01);
Abstract

Circuitry to control and monitor solid state power switches. The circuitry may be configured to measure the signal at a control terminal for the power switch to ensure the power switch is in the desired state, e.g., switched ON and conducting current or switched OFF and blocking current. In some examples the circuitry may also be configured to avoid a floating control terminal. The circuit of this disclosure may have at least two connections to the control terminal, e.g., to a gate terminal for a metal oxide semiconductor field effect transistor (MOSFET) or insulated gate bipolar junction transistor (IGBT). In this manner the circuit of this disclosure may ensure the entire signal chain to the control terminal is functioning properly.


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