公开(公告)号：EP3588703A1

公开(公告)日：2020-01-01

申请号：EP18179161.7

申请日：2018-06-21

Applicant: STMicroelectronics (Research & Development) Limited

Inventor： LEE, Denise ,  STORM, Graeme ,  VENUGOPALAN NAIR JALAJAKUMARI, Aravind ,  ALEXANDROPOULOS, Alexios

IPC: H01S5/042 ,  H01S5/0683 ,  H01S5/183 ,  H02M3/00

Abstract: A driver circuit for a laser diode configured to pass a current, said circuit comprising: a charge-pump configured to generate an output boosted positive supply rail voltage; at least one switch configured to couple the output of the charge-pump to a terminal of the laser diode and to isolate the positive supply rail from the terminal of the laser diode when the charge-pump is enabled.

公开(公告)号：EP3683905A1

公开(公告)日：2020-07-22

申请号：EP19305053.1

申请日：2019-01-16

Applicant: STMicroelectronics (Research & Development) Limited ,  STMicroelectronics (Grenoble 2) SAS

Inventor： LEE, Denise ,  DUTTON, Neale ,  MOENECLAEY, Nicolas ,  ANDRIOT-BALLET, Jérôme

IPC: H01S5/042

Abstract: A laser diode driver circuit comprising: a first pair of contacts and connectors coupled to an anode of the laser diode, wherein an inductance of each of the first pair of contacts and connectors is the same; a second pair of contacts and connectors coupled to a cathode of the laser diode, wherein an inductance of each of the second pair of contacts and connectors is the same; current driving circuitry, wherein the current driving circuitry is configured to operate such that: in a first phase a first current passes through the first pair of contacts and connectors and a further current passes through the a second pair of contacts and connectors such that a potential difference between the cathode and anode is below a diode activation value; in a second phase, succeeding the first phase, the further current passes through a first of the first pair of contacts and connectors, the laser diode and a first of the second pair of contacts and connectors such that the potential difference between the cathode and anode is above the diode activation value; in a third phase, succeeding the second phase, a current passes through a first of the first pair of contacts and connectors, the laser diode and a first of the second pair of contacts and connectors and the potential difference between the cathode and anode is below the diode activation value.

公开(公告)号：EP3297105A1

公开(公告)日：2018-03-21

申请号：EP16189306.0

申请日：2016-09-16

Applicant: STMicroelectronics (Research & Development) Limited

Inventor： LEE, Denise ,  STORM, Graeme

IPC: H01S5/042 ,  H05B33/08 ,  H01S5/0683

CPC classification number: H01S5/042 ,  H01S5/0261 ,  H01S5/0683 ,  H01S5/183

Abstract: A driver circuit for a laser diode configured to pass a current, said circuit comprising: a first transistor connected in series with the laser diode, and configured to regulate the current; and a voltage regulator configured to provide an input to a gate of the first transistor so as to regulate the current in dependence upon a regulator input and a feedback input at the voltage regulator.

Abstract translation: 1。一种激光二极管的驱动器电路，被配置为传递电流，所述电路包括：第一晶体管，与所述激光二极管串联连接，并且被配置为调节电流; 以及电压调节器，被配置为向第一晶体管的栅极提供输入，以便根据调节器输入和电压调节器处的反馈输入来调节电流。