US 12,341,422 B2
DC-DC converter topology with switching overcurrent protection
Florian Neveu, Freising (BY); Stefan Schimonsky, Munich (DE); and Joerg Kirchner, Mauern (DE)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Apr. 28, 2023, as Appl. No. 18/309,001.
Prior Publication US 2024/0364210 A1, Oct. 31, 2024
Int. Cl. H02M 1/32 (2007.01); H02M 1/00 (2006.01); H02M 3/157 (2006.01); H02M 3/158 (2006.01)
CPC H02M 1/32 (2013.01) [H02M 1/0009 (2021.05); H02M 3/157 (2013.01); H02M 3/1582 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A DC-DC converter controller, comprising:
an input terminal;
an output terminal;
a current path extending from the input terminal to the output terminal;
an input voltage monitoring circuit having an input voltage monitoring circuit input, an upper input voltage threshold terminal, a lower input voltage threshold terminal, and a voltage reference output, the input voltage monitoring circuit input coupled to the input terminal;
a controller having a feedback input, a reference input, and a plurality of switching outputs, wherein the feedback input is coupled to the output terminal and the reference input is coupled to the voltage reference output of the input voltage monitoring circuit;
a current sensor having a current sensor input arranged on the current path and a current sensor output; and
a current comparison circuit having a first current comparison input, a second current comparison input, and a current comparison output, the first current comparison input coupled to the current sensor output, the second current comparison input coupled to a current threshold terminal, and the current comparison output coupled to the controller.