US 11,750,095 B2
Voltage converter
Helene Esch, Seyssinet Pariset (FR); Mathilde Sie, Bernin (FR); David Chesneau, Grenoble (FR); and Eric Feltrin, Grenoble (FR)
Assigned to STMicroelectronics (Grenoble 2) SAS, Grenoble (FR)
Filed by STMicroelectronics (Grenoble 2) SAS, Grenoble (FR)
Filed on Oct. 23, 2020, as Appl. No. 17/78,284.
Claims priority of application No. 1911933 (FR), filed on Oct. 24, 2019.
Prior Publication US 2021/0126535 A1, Apr. 29, 2021
Int. Cl. H02M 3/158 (2006.01); H02M 1/08 (2006.01); H02M 1/00 (2006.01); H02M 3/156 (2006.01)
CPC H02M 3/158 (2013.01) [H02M 1/08 (2013.01); H02M 1/0022 (2021.05); H02M 3/156 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A voltage converter comprising:
a first transistor coupled between a first rail configured to receive a supply voltage and a first node;
a second transistor coupled between the first node and a second rail coupled to a reference voltage;
an inductance coupled between the first node and a second node configured to deliver an output voltage;
a first ramp generator configured to deliver a first voltage ramp with a slope proportional to a first voltage difference between the supply voltage and the output voltage; and
a second ramp generator configured to deliver a second voltage ramp with a slope proportional to the first voltage difference,
wherein, at each operating cycle of the voltage converter:
the first transistor is maintained in the on state for a first time period, the first time period being determined from a comparison of the first voltage ramp and the output voltage or a voltage set point, and
the second transistor is maintained in the on state for a second time period, the second time period being determined from a comparison of the second voltage ramp and the output voltage or the voltage set point.