US 12,072,356 B2
Voltage detection circuit and method for integrated circuit, and integrated circuit
Junmou Zhang, Los Angeles, CA (US); Shan Lu, Los Angeles, CA (US); Chuang Zhang, Los Angeles, CA (US); Yimin Chen, Los Angeles, CA (US); Jian Wang, Beijing (CN); and Yuanlin Cheng, Beijing (CN)
Assigned to Lemon Inc., Grand Cayman (KY)
Filed by Lemon Inc., Grand Cayman (KY)
Filed on May 5, 2022, as Appl. No. 17/737,373.
Claims priority of application No. 202110497286.9 (CN), filed on May 7, 2021.
Prior Publication US 2022/0357370 A1, Nov. 10, 2022
Int. Cl. G01R 19/10 (2006.01); H03K 17/687 (2006.01)
CPC G01R 19/10 (2013.01) [H03K 17/6871 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A voltage detection circuit for an integrated circuit, comprising: a first current source, a first branch, and a second branch, wherein
both a signal input end of the first branch and a signal input end of the second branch are connected to an output terminal of the first current source;
the first branch comprises a first voltage control current component and a first load connected in series, and the second branch comprises a current signal detection component and a second load connected in series;
a voltage signal to be detected is inputted into a control signal input terminal of the first voltage control current component, and the first voltage control current component is configured to adjust a first current flowing through the first branch according to a size of the voltage signal to be detected; and
the current signal detection component is configured to output, in a real time manner, a preset signal characterizing a second current flowing through the second branch, to determine change of the voltage signal to be detected based on the preset signal.