US 12,316,073 B2
Single-FET pulsed laser diode driver
Joseph H. Colles, Bonsall, CA (US); Steven E. Rosenbaum, San Diego, CA (US); and Stuart B. Molin, Carlsbad, CA (US)
Assigned to Silanna Asia Pte Ltd, Singapore (SG)
Filed by Silanna Asia Pte Ltd, Singapore (SG)
Filed on Jan. 10, 2024, as Appl. No. 18/409,216.
Application 18/409,216 is a continuation of application No. 17/661,184, filed on Apr. 28, 2022, granted, now 11,901,697.
Application 17/661,184 is a continuation in part of application No. 17/657,973, filed on Apr. 5, 2022.
Prior Publication US 2024/0146023 A1, May 2, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01S 5/042 (2006.01); H03K 17/687 (2006.01)
CPC H01S 5/0428 (2013.01) [H03K 17/6871 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A pulsed laser diode driver comprising:
a plurality of resonant laser diode driver cells, each resonant laser diode driver cell comprising:
an inductor having a first terminal and a second terminal, the first terminal being configured to receive a source voltage;
a bypass capacitor having a first terminal electrically connected to the first terminal of the inductor and a second terminal electrically connected to the second terminal of the inductor;
a laser diode having a cathode that is electrically connected to the first terminal of the inductor and an anode that is electrically connected to the second terminal of the inductor; and
a bypass switch having a drain node that is electrically connected to the second terminal of the inductor and a source node that is electrically connected to ground; and
a source capacitor having a first terminal electrically connected to the first terminal of each inductor of the plurality of resonant laser diode driver cells to provide the source voltage thereto and a second terminal electrically coupled to ground;
wherein:
for each resonant laser diode driver cell of the plurality of resonant laser diode driver cells, the bypass switch is configured to control a current flow through the inductor to produce a high-current pulse through the laser diode, the high-current pulse corresponding to a peak current of a resonant waveform developed at the anode of the laser diode.