公开(公告)号：US20240204478A1

公开(公告)日：2024-06-20

申请号：US18533585

申请日：2023-12-08

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

Inventor： Romeo Letor ,  Alfio Russo ,  Nadia Lecci ,  Antonio Filippo Massimo Pizzardi ,  Antoine Pavlin ,  Vanni Poletto ,  Marco Brera ,  Simone Bianchi

IPC: H01S5/026 ,  G01S7/481 ,  H01S5/02326 ,  H01S5/40

CPC classification number: H01S5/0261 ,  G01S7/4814 ,  H01S5/02326 ,  H01S5/4025

Abstract: In a driver circuit couplable to laser diodes, a semiconductor body has a first surface. First and second control switches have drains coupled to a drain metallization, which is couplable to a power supply line, and sources coupled to respective first and second source metallizations, which are couplable to cathode terminals of the laser diodes and a reference node. A plurality of high-side switches have drains coupled to the drain metallization and sources coupled to third source metallizations, each of which is coupled to a respective drive output node for driving an anode terminal of a respective laser diode. The drain, first, second and third source metallizations face the first surface of the semiconductor body, which faces the laser diodes. The second and third source metallizations are aligned with one another and are superimposed to the respective source terminals of the second control switch and high-side switches.

公开(公告)号：US20220013984A1

公开(公告)日：2022-01-13

申请号：US17360381

申请日：2021-06-28

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

Inventor： Romeo Letor ,  Vanni Poletto ,  Antoine Pavlin ,  Nadia Lecci ,  Alfio Russo

IPC: H01S5/062 ,  H01S5/026 ,  H03K5/07

Abstract: An embodiment pulse generator circuit comprises a first electronic switch coupled between first and second nodes, and a second electronic switch coupled between the second node and a reference node. An LC resonant circuit comprising an inductance and a capacitance is coupled between the first and reference nodes along with charge circuitry comprises a further inductance in a current flow line between a supply node and an intermediate node in the LC resonant circuit. Drive circuitry of the electronic switches repeats, during a sequence of switching cycles, charge time intervals, wherein the capacitance in the LC resonant circuit is charged via the charge circuit, and pulse generation time intervals, wherein a pulsed current is provided to the load via the first and second nodes. The charge and pulse generation time intervals are interleaved with oscillation time intervals where the LC resonant circuit oscillates at a resonance frequency.

公开(公告)号：US11894657B2

公开(公告)日：2024-02-06

申请号：US17360381

申请日：2021-06-28

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

Inventor： Romeo Letor ,  Vanni Poletto ,  Antoine Pavlin ,  Nadia Lecci ,  Alfio Russo

IPC: H01S5/062 ,  H03K5/07 ,  H01S5/026

CPC classification number: H01S5/06216 ,  H01S5/0261 ,  H03K5/07

Abstract: An embodiment pulse generator circuit comprises a first electronic switch coupled between first and second nodes, and a second electronic switch coupled between the second node and a reference node. An LC resonant circuit comprising an inductance and a capacitance is coupled between the first and reference nodes along with charge circuitry comprises a further inductance in a current flow line between a supply node and an intermediate node in the LC resonant circuit. Drive circuitry of the electronic switches repeats, during a sequence of switching cycles, charge time intervals, wherein the capacitance in the LC resonant circuit is charged via the charge circuit, and pulse generation time intervals, wherein a pulsed current is provided to the load via the first and second nodes. The charge and pulse generation time intervals are interleaved with oscillation time intervals where the LC resonant circuit oscillates at a resonance frequency.

公开(公告)号：US12113444B2

公开(公告)日：2024-10-08

申请号：US17856657

申请日：2022-07-01

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

Inventor： Vanni Poletto ,  Antoine Pavlin

IPC: H02M3/158 ,  B60L53/22 ,  B60L58/20

CPC classification number: H02M3/1586 ,  B60L53/22 ,  B60L58/20 ,  B60L2210/12 ,  B60L2210/14

Abstract: In an embodiment, a phase circuit includes: a bidirectional output stage configured to be coupled between a first battery and a second battery; a memory configured to store a number of active phases, and an identifier; and a synchronization circuit configured to receive a first clock signal and determine a start time of a switching cycle of the bidirectional output stage based on the number of active phases, the identifier, and the first clock signal, where the phase circuit is configured to control the timing of the switching of the bidirectional output stage based on the start time.

公开(公告)号：US20240006998A1

公开(公告)日：2024-01-04

申请号：US17856657

申请日：2022-07-01

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

Inventor： Vanni Poletto ,  Antoine Pavlin

IPC: H02M3/158 ,  B60L53/22 ,  B60L58/20

CPC classification number: H02M3/1586 ,  B60L53/22 ,  B60L58/20 ,  B60L2210/12 ,  B60L2210/14

Abstract: In an embodiment, a phase circuit includes: a bidirectional output stage configured to be coupled between a first battery and a second battery; a memory configured to store a number of active phases, and an identifier; and a synchronization circuit configured to receive a first clock signal and determine a start time of a switching cycle of the bidirectional output stage based on the number of active phases, the identifier, and the first clock signal, where the phase circuit is configured to control the timing of the switching of the bidirectional output stage based on the start time.

公开(公告)号：US20220014187A1

公开(公告)日：2022-01-13

申请号：US17338157

申请日：2021-06-03

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

Inventor： Romeo Letor ,  Vanni Poletto ,  Antoine Pavlin ,  Alfio Russo ,  Nadia Lecci

IPC: H03K17/687 ,  H01S5/042

Abstract: In accordance with an embodiment, a pulse generator circuit includes: an LC resonant circuit coupled between a first node and a reference node; a first switch coupled between the first node and the reference node; a switching network comprising a second switch coupled between the first node and a respective drive node; and drive circuit having outputs coupled to the first switch and to the second switch of the switching network. The drive circuit configured to, in repeating cycles: close the first switch when a current flowing through an inductor of the LC resonant circuit increases during a resonant cycle, when the current flowing through the inductor reaches a threshold value, open the first switch, close the second switch of the switching network for a pulse duration time when the first switch is open, and open the second switch at an expiration of the pulse duration time.