US 12,348,069 B2
Battery discharge current management system with fast discharging function and related integrated circuit
Christian Sporck, Campbell, CA (US); Rui Wang, Chengdu (CN); and Min Xu, Hangzhou (CN)
Assigned to Monolithic Power Systems, Inc., San Jose, CA (US)
Filed by Monolithic Power Systems, Inc., San Jose, CA (US)
Filed on Sep. 24, 2021, as Appl. No. 17/484,147.
Claims priority of application No. 202011045335.7 (CN), filed on Sep. 28, 2020.
Prior Publication US 2022/0102996 A1, Mar. 31, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 7/00 (2006.01)
CPC H02J 7/0063 (2013.01) [H02J 7/0068 (2013.01); H02J 7/00716 (2020.01)] 29 Claims
OG exemplary drawing
 
1. A battery discharge current management system, comprising:
a voltage converting circuit, having a first pin, a second pin, and a third pin; and
a first switch module, having a first terminal coupled to the first pin, a second terminal coupled to the second pin, and a control terminal coupled to the third pin; and wherein
when the battery discharge current management system is configured to operate in a discharge state, the voltage converting circuit is configured to convert a system voltage signal at the second pin to an output voltage signal at the first pin, and further configured to generate a master discharge current signal at the first pin, and further configured to control the first switch module to generate a first additional discharge current signal at the first terminal of the first switch module; and
wherein the voltage converting circuit comprises:
a first switch;
a second switch, wherein the first switch and the second switch are coupled in series between the first pin and a logic ground;
a third switch;
a fourth switch, wherein the third switch and the fourth switch are coupled in series between the second pin and the logic ground; and
a first inductor, coupled between a common connection of the first switch and the second switch and a common connection of the third switch and the fourth switch.