公开(公告)号：EP4386437A1

公开(公告)日：2024-06-19

申请号：EP23307132.3

申请日：2023-12-05

Applicant: STMicroelectronics (Rousset) SAS ,  STMicroelectronics S.r.l.

Inventor： LETOR, Romeo ,  RUSSO, Alfio ,  LECCI, Nadia ,  PIZZARDI, Antonio Filippo Massimo ,  PAVLIN, Antoine ,  POLETTO, Vanni ,  BRERA, Marco ,  BIANCHI, Simone

IPC: G01S7/481 ,  G01S7/484 ,  G01S17/10 ,  H01S5/042

CPC classification number: G01S7/4815 ,  G01S7/484 ,  G01S17/10 ,  H01S5/0428 ,  G01S7/4817 ,  H01S5/4031

Abstract: In a driver circuit (100) couplable to laser diodes (LD_j), a semiconductor body (504) has a first surface (504a). A first control switch (S1) has a drain (DS1) coupled to a drain metallization (530) and a source (SS1) coupled to a first source metallization (532). The drain metallization is couplable to a power supply line (12). A second control switch (S1_0) has a drain (DS1_0) coupled to the drain metallization and a source (SS1_0) coupled to a second source metallization (533) . The first and second source metallizations are couplable to cathode terminals of the laser diodes (LD_j) and to a reference node (GND). A plurality of high-side switches (S2_j) have respective drains (DS2_j) coupled to the drain metallization (530) and respective sources (SS2_j) coupled to respective third source metallizations (534_j). Each third source metallization (534_j) is coupled to a respective drive output node (13_j) for driving an anode terminal (LDa_j) of a respective laser diode (LD_j). The drain metallization as well as the first, second and third source metallizations face the first surface (504a) of the semiconductor body (504), which is also configured to face the laser diodes (LD_j). The second source metallization (533) and the third source metallizations (534_j) are aligned with one another in a direction of alignment (540) and are superimposed, orthogonally to the direction of alignment (540), to the respective source terminals of the second control switch (S1_0) and of the high-side switches (S2_j).