US 11,719,756 B2
Battery monitoring system and semiconductor device
Naoaki Sugimura, Kanagawa (JP)
Assigned to LAPIS SEMICONDUCTOR CO., LTD., Sizuoka (JP)
Filed by LAPIS SEMICONDUCTOR CO., LTD., Kanagawa (JP)
Filed on Jun. 23, 2021, as Appl. No. 17/355,975.
Application 17/355,975 is a continuation of application No. 16/684,626, filed on Nov. 15, 2019, granted, now 11,073,569.
Application 16/684,626 is a continuation of application No. 15/397,830, filed on Jan. 4, 2017, granted, now 10,502,795, issued on Dec. 10, 2019.
Application 15/397,830 is a continuation of application No. 13/939,280, filed on Jul. 11, 2013, granted, now 9,575,129, issued on Feb. 21, 2017.
Claims priority of application No. 2012-159958 (JP), filed on Jul. 18, 2012.
Prior Publication US 2021/0318389 A1, Oct. 14, 2021
Int. Cl. G01R 31/396 (2019.01); G01R 31/3835 (2019.01); H01M 10/48 (2006.01); H01M 10/42 (2006.01)
CPC G01R 31/396 (2019.01) [G01R 31/3835 (2019.01); H01M 10/425 (2013.01); H01M 10/482 (2013.01); H01M 2010/4271 (2013.01); H01M 2200/00 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A semiconductor device comprising:
a plurality of input terminals, each of the input terminals being connected to a high potential side of each of a plurality of battery cells connected in series, an input signal from each of the plurality of battery cells being input to each of the input terminals;
a first terminal electrically connected to a high potential side of a highest battery cell in the battery cells through a first filter;
a first circuit electrically connected to each of the input terminals and including a regulator that is electrically connected to the first terminal and converts a power source voltage supplied via the first terminal to a drive voltage for driving an internal processing circuit;
a protection element, one portion of the protection element being electrically connected to each of the plurality of input terminals and the first circuit, the protection element being not connected to the first terminal;
a second terminal electrically connected between another portion of the protection element and a second filter;
a second circuit electrically connected to the second terminal and discharging a discharge current from the protection element; and
a third terminal electrically connected to the first circuit and the second circuit.