US 12,328,068 B2
DC-DC converter circuit and corresponding method of testing a DC-DC converter circuit
Alberto Cattani, Cislago (IT); Alessandro Gasparini, Cusano Milanino (IT); and Stefano Ramorini, Milan (IT)
Assigned to STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed by STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed on Mar. 15, 2023, as Appl. No. 18/121,767.
Claims priority of application No. 102022000005477 (IT), filed on Mar. 21, 2022.
Prior Publication US 2023/0299670 A1, Sep. 21, 2023
Int. Cl. H02M 3/156 (2006.01); H02M 1/00 (2006.01)
CPC H02M 3/156 (2013.01) [H02M 1/0003 (2021.05)] 19 Claims
OG exemplary drawing
 
1. A switching DC-DC converter circuit, comprising:
a switching stage including an input node configured to receive an input voltage and an output node configured to produce an output voltage;
feedback loop circuitry coupled to said output node of said switching stage and configured to produce, at a loop output node, a control signal of the switching DC-DC converter circuit as a function of a difference between said output voltage and a reference voltage; and
test loop circuitry arranged between the loop output node of said feedback loop circuitry and said output node of said switching stage, wherein the test loop circuitry is configured, when enabled, to apply a current at the output node as a function of a value of said control signal of the switching DC-DC converter circuit;
wherein said feedback loop circuitry is calibrated during a test phase of said switching DC-DC converter circuit.