Abstract: An over-voltage detection circuit with a digitally programmable trip point designed in SkyWater 130nm process technology. The proposed circuit is based on a multiple-tap voltage divider, an analog multiplexer, a level shifter, and a comparator with hysteresis. There are 16 threshold levels available for selection (vtrip[3:0]), ranging from 3.30V (4'b0000) to 5.50V (4'b1111). The circuit requires both analog power (AVDD) and digital power (DVDD).
Company: Von Braun Labs
William Carrara Orlato | LinkedIn
Lucas Daudt Franck | LinkedIn
Supervisor: Toni Robert Trigoso Tejada | LinkedIn
TODO
First, we would like to thank Von Braun Labs for allowing us to participate in the Chipalooza challenge. Next, we want to give a shout-out to everyone who helped us with guidance and support: Osmar Vieira Machado (Von Braun Labs), João Navarro Soares Jr. (USP), and Tim Edwards (Efabless). Last but not least, we want to say a big thank you to Efabless for organizing and sponsoring the challenge.
[1] P. E. Allen, "CMOS Analog Circuit Design", 2nd ed., Oxford University Press, 2012.
[2] T. Someya, K. Matsunaga, H. Morimura, T. Sakurai and M. Takamiya, "A 0.90–4.39-V Detection Voltage Range, 56-Level Programmable Voltage Detector Using Fine Voltage-Step Subtraction for Battery Management", in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 66, no. 3, pp. 1270-1279, March 2019, doi: 10.1109/TCSI.2018.2880776.