US 11,990,748 B2
Power supply system and control in a series dynamic load configuration
Kushal Kshirsagar, Warwick, RI (US); Prasan Kasturi, Sharon, MA (US); Danny Clavette, Greene, RI (US); and Darryl Tschirhart, Cambridge (CA)
Assigned to Infineon Technologies Austria AG, Villach (AT)
Filed by Infineon Technologies Austria AG, Villach (AT)
Filed on May 17, 2021, as Appl. No. 17/321,738.
Prior Publication US 2022/0368230 A1, Nov. 17, 2022
Int. Cl. H02J 1/10 (2006.01); H02M 3/158 (2006.01)
CPC H02J 1/102 (2013.01) [H02M 3/1584 (2013.01)] 32 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a controller operative to:
monitor a magnitude of a voltage powering a first dynamic load, the first dynamic load being one of multiple dynamic loads disposed in series;
compare the magnitude of the voltage to a first reference voltage;
control operation of multiple power converter phases in a power converter to control the magnitude of the voltage powering the first dynamic load to be below the first reference voltage;
wherein the controller is operative to regulate the magnitude of the voltage powering the first dynamic load via varying an amount of supplemental current supplied by the power converter to the first dynamic load;
wherein the controller is operative to switch between generating the supplemental current as a positive current and a negative current;
wherein the controller is further operative to generate the supplemental current in a first direction through the first dynamic load during a first condition in which the magnitude of the voltage falls in a first portion of a voltage range between the first reference voltage and a second reference voltage; and
wherein the controller is further operative to generate the supplemental current in a second direction through the first dynamic load during a second condition in which the magnitude of the voltage falls in a second portion of the voltage range between the first reference voltage and the second reference voltage, the second direction being opposite the first direction.