US 12,132,383 B2
Current sampling in converter circuits
Isaac Cohen, Dix Hills, NY (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on Apr. 27, 2022, as Appl. No. 17/730,200.
Prior Publication US 2023/0353030 A1, Nov. 2, 2023
Int. Cl. H02M 1/00 (2007.01); H02M 3/155 (2006.01)
CPC H02M 1/0009 (2021.05) [H02M 3/155 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A circuit comprising:
a voltage sensor having an output;
a first transconductance amplifier having an input and a respective output and having a first transconductance;
a second transconductance amplifier having a respective input and a respective output and having a second transconductance;
a first switch coupled between the output of the voltage sensor and the input of the first transconductance amplifier;
a second switch coupled between the output of the voltage sensor and the input of the second transconductance amplifier;
a capacitive element having a first terminal coupled to the outputs of the first and second transconductance amplifiers;
a comparator having a respective input and a respective output, in which its input is coupled to the outputs of the first and second transconductance amplifiers and to the first terminal of the capacitive element; and
a sampling circuit coupled to the output of the comparator.