US 12,388,370 B2
Integrated power converter with isolated-channel feedback interface
Michael Corry, Plano, TX (US); Jose V. Formenti, Dallas, TX (US); and Robert Martinez, Lucas, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on May 27, 2022, as Appl. No. 17/827,447.
Prior Publication US 2023/0402930 A1, Dec. 14, 2023
Int. Cl. H02M 3/335 (2006.01); H02M 1/32 (2007.01); H02M 1/36 (2007.01)
CPC H02M 3/33523 (2013.01) [H02M 1/32 (2013.01); H02M 1/327 (2021.05); H02M 1/36 (2013.01)] 32 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a power stage having a power stage control input; and
a controller having an enable input, a timer, a control input, a control output, and an output voltage status terminal, the control output coupled to the power stage control input, and the controller configured to:
receive a status signal at the control input, in which the status signal includes a set of symbols representing a feedback indicator and a control message, the feedback indicator represents a relationship between an output voltage and a target voltage, and the control message indicates whether the output voltage is within a target voltage range;
responsive to the feedback indicator, provide a control signal at the control output;
responsive to the control message, set a state of the output voltage status terminal indicating whether the output voltage is within the target voltage range;
start the timer responsive to a state change of the enable input indicating the power stage is enabled; and
responsive to not receiving the control message indicating the output voltage is within the target voltage range before the timer expires, set the control signal to disable the power stage.