US 12,388,233 B2
Laser diode driver circuits and methods of operating thereof
Samuel Rigault, Grenoble (FR); Nicolas Moeneclaey, Vourey (FR); and Xavier Branca, Sassenage (FR)
Assigned to STMicroelectronics (Grenoble 2) SAS, Grenoble (FR)
Filed by STMicroelectronics (Grenoble 2) SAS, Grenoble (FR)
Filed on Oct. 11, 2022, as Appl. No. 17/963,759.
Application 17/963,759 is a division of application No. 16/774,889, filed on Jan. 28, 2020, granted, now 11,482,836.
Prior Publication US 2023/0045492 A1, Feb. 9, 2023
Int. Cl. H01S 5/042 (2006.01); H01S 5/068 (2006.01)
CPC H01S 5/0428 (2013.01) [H01S 5/06825 (2013.01); H01S 5/06817 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A circuit comprising:
a fly capacitor comprising a first end and a second end;
a laser diode comprising an anode and a cathode, wherein the circuit is configured to operate in a first operating state and a second, light emitting, operating state, the anode being coupled to the first end of the fly capacitor,
wherein, in the first operating state, the cathode is coupled to a first voltage supply node to reverse bias the laser diode, the first end of the fly capacitor is coupled to a second voltage supply node, the second end of the fly capacitor is coupled to a first reference terminal;
wherein, in the second operating state, the cathode is coupled to a second reference terminal and decoupled from the first voltage supply node, the first end of the fly capacitor is decoupled from the second voltage supply node, the second end of the fly capacitor is coupled to a third reference terminal; and
a third voltage supply node coupled with the first voltage supply node and coupled with the second voltage supply node, wherein a first end of a decoupling capacitor is coupled with the third voltage supply node and a second end of the decoupling capacitor is coupled with the third reference terminal.