US 12,470,145 B2
Multiphase switching converter with stackable controllers
Daocheng Huang, Santa Clara, CA (US); Fangyu Zhang, Hangzhou (CN); and Ming Chen, Hangzhou (CN)
Assigned to Monolithic Power Systems, Inc., Kirkland, WA (US)
Filed by Monolithic Power Systems, Inc., Kirkland, WA (US)
Filed on Dec. 1, 2022, as Appl. No. 18/073,382.
Prior Publication US 2024/0186902 A1, Jun. 6, 2024
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2007.01)
CPC H02M 3/1586 (2021.05) [H02M 1/0009 (2021.05)] 16 Claims
OG exemplary drawing
 
1. A controller for a multiphase switching converter, comprising:
a first feedback pin capable of receiving a feedback signal representative of an output voltage of the multiphase switching converter;
a plurality of switching control pins capable of providing a plurality of switching control signals to control a plurality of switching circuits of the multiphase switching converter;
a second feedback pin capable of receiving a first total current signal from another controller for another multiphase switching converter:
a plurality of current sense pins capable of receiving a plurality of current sense signals representative of a plurality of currents flowing through the plurality of switching circuits respectively; and
a logic circuit, configured to generate the plurality of switching control signals to control the plurality of switching circuits at least based on the plurality of current sense signals and the first total current signal.