US 12,470,129 B2
Output overvoltage protection for a totem pole power factor correction circuit
Armando Gabriel Mesa, Tempe, AZ (US); and Ajay Hari, Scottsdale, AZ (US)
Assigned to SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Scottsdale, AZ (US)
Filed by SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Scottsdale, AZ (US)
Filed on May 20, 2024, as Appl. No. 18/669,320.
Application 18/669,320 is a continuation of application No. 17/659,250, filed on Apr. 14, 2022, granted, now 12,003,171.
Claims priority of provisional application 63/180,506, filed on Apr. 27, 2021.
Prior Publication US 2024/0313643 A1, Sep. 19, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 1/32 (2007.01); H02M 1/42 (2007.01); H02M 1/44 (2007.01)
CPC H02M 1/4225 (2013.01) [H02M 1/32 (2013.01); H02M 1/44 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
detecting that an input voltage is in a first half cycle having a first polarity;
applying a signal to a first transistor of a first portion of a circuit, the signal for a conversion process corresponding to the first half cycle; and
applying a pulse sequence to a second transistor of the first portion of the circuit during a pause in the signal in response to a polarity change of the input voltage, the pulse sequence controlling the second transistor to generate a change on a voltage of a capacitor coupled to a second portion of the circuit.