Study and Design of an Integrated CMOS Laser Diode Driver for an iToF-based 3D Image Sensor
Conference: CIPS 2020 - 11th International Conference on Integrated Power Electronics Systems
03/24/2020 - 03/26/2020 at Berlin, Deutschland
Proceedings: ETG-Fb. 161: CIPS 2020
Pages: 6Language: englishTyp: PDF
David, Romain (University of Lyon, University Claude Bernard Lyon 1, INSA Lyon, CNRS, Ampère, 69621, Villeurbanne, France & STMicroelectronics, 12 Rue Jules Horowitz, 38019, Grenoble B.P. 217, France)
Allard, Bruno; Branca, Xavier; Joubert, Charles (University of Lyon, University Claude Bernard Lyon 1, INSA Lyon, CNRS, Ampère, 69621, Villeurbanne, France)
This paper presents a study of two architectures for designing an integrated CMOS Laser Diode Driver (LDD) intended for a 3D image sensor used in mobile applications and based on the indirect Time-of-Flight (iToF) measurement. Architectures are focused on two different driving topologies: series and shunt which means the laser diode is connected either in series or parallel with a switching element in order to provide laser pulses. Two LDD prototypes implemented in a 130 nm CMOS technology are able to provide programmable current pulses up to 3 A with a 2.5 ns pulse width at a maximum 200 MHz Pulse Repetition Frequency (PRF).