US 12,222,377 B2
Intelligent semiconductor switch with integrated current measurement function
Albino Pidutti, Villach (AT); Andrea Baschirotto, Tortona (IT); and Paolo Del Croce, Villach (AT)
Assigned to Infineon Technologies AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on Apr. 6, 2023, as Appl. No. 18/296,878.
Claims priority of application No. 102022112757.5 (DE), filed on May 20, 2022.
Prior Publication US 2023/0375599 A1, Nov. 23, 2023
Int. Cl. G01R 19/10 (2006.01); H03K 17/56 (2006.01)
CPC G01R 19/10 (2013.01) [H03K 17/56 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method comprising:
switching a first transistor on and off in accordance with a logic signal, with a load current passing through the first transistor while it is switched on;
providing a sense current that is indicative of the load current via a second transistor that is coupled to the first transistor such that the first and the second transistors are switched on and off simultaneously;
determining an end of a switch-on phase of the second transistor; and
providing a current sense signal that represents the sense current between a first time instant, which corresponds to the determined end of the switch-on phase, and a second time instant, at which the logic signal signals a switch-off of the first transistor.