US 11,709,513 B2
Non-linear load line for a multiphase voltage regulator
Travis Guthrie, Austin, TX (US); Jim Toker, Austin, TX (US); and Shea Petricek, Dallas, TX (US)
Assigned to Renesas Electronics America Inc., Milpitas, CA (US)
Filed by Renesas Electronics America Inc., Milpitas, CA (US)
Filed on Aug. 5, 2022, as Appl. No. 17/882,232.
Application 17/882,232 is a continuation of application No. 16/856,758, filed on Apr. 23, 2020, granted, now 11,409,312.
Claims priority of provisional application 62/838,103, filed on Apr. 24, 2019.
Prior Publication US 2022/0374034 A1, Nov. 24, 2022
Int. Cl. G05F 1/56 (2006.01); G06F 1/26 (2006.01)
CPC G05F 1/56 (2013.01) [G06F 1/26 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A semiconductor device for a multiphase voltage regulator, the semiconductor device comprising:
a plurality of sensing circuits, each sensing circuit of the plurality of sensing circuits being configured to sense an output current; and
a load line modifier circuit configured to
receive a summed current from the plurality of sensing circuits,
generate a load line including a first portion and second portion, the first portion having a constant output voltage value, and the second portion having a variable output voltage dependent on the output current,
wherein the load line modifier circuit generates the load line having the first portion when the summed current is lower than or equal to a predetermined current value, and generates the load line having the second portion when the summed current is greater than the predetermined current value.