US 12,407,270 B2
Voltage converter
Yannick Hague, Mettray (FR); and Romain Launois, Tours (FR)
Assigned to STMicroelectronics (Tours) SAS, Tours (FR)
Filed by STMicroelectornics (Tours) SAS, Tours (FR)
Filed on Apr. 23, 2024, as Appl. No. 18/643,420.
Application 18/643,420 is a continuation of application No. 17/532,717, filed on Nov. 22, 2021, granted, now 11,996,784.
Claims priority of application No. 2012211 (FR), filed on Nov. 26, 2020.
Prior Publication US 2024/0275298 A1, Aug. 15, 2024
Int. Cl. H02M 7/06 (2006.01); H02M 1/32 (2007.01); H02M 1/36 (2007.01)
CPC H02M 7/062 (2013.01) [H02M 1/322 (2021.05); H02M 1/325 (2021.05); H02M 1/36 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A voltage converter, comprising:
input nodes configured to receive an input voltage;
output nodes configured to deliver an output voltage;
a rectifying bridge coupled between the input nodes and the output nodes;
a capacitor and a resistor series-coupled between the output nodes;
a thyristor having an anode coupled to one terminal of the resistor and a cathode coupled to a given one of the output nodes, wherein the thyristor is configured to allow flow of a positive current from the resistor to the given one of the output nodes;
a control input configured to receive a control signal, wherein the control signal biases a gate of the thyristor to control the flow of current through the thyristor; and
a transient voltage suppressor circuit coupled between the anode and the gate of the thyristor, configured to activate the thyristor when a voltage across the anode and cathode of the thyristor exceeds a threshold voltage by creating a short circuit path between the gate and the output node coupled to the cathode of the thyristor.