公开(公告)号：US20230064438A1

公开(公告)日：2023-03-02

申请号：US17460657

申请日：2021-08-30

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro CANNONE ,  Enrico FERRARA ,  Nicola ERRICO ,  Gea DONZELLI

IPC: H01L21/66 ,  G01R31/28

Abstract: Disclosed herein is a single integrated circuit chip including main logic that operates a vehicle component such as a valve driver. Isolated from the main logic within the chip is a safety area that operates to verify proper operation of the main logic. A checker circuit within the chip outside of the safety area serves to verify proper operation of the checker circuit. The checker circuit receives signals from the safety circuit and uses combinatorial logic circuit to verify from those signals that the check circuit is operating properly.

公开(公告)号：US20230043943A1

公开(公告)日：2023-02-09

申请号：US17870173

申请日：2022-07-21

Applicant: STMicroelectronics S.r.l.

Inventor： Nicola ERRICO ,  Valerio BENDOTTI ,  Luca FINAZZI ,  Gaudenzia BAGNATI

IPC: H03K17/16 ,  H02M3/158

Abstract: A circuit includes a high-side transistor pair and a low-side transistor pair having a common intermediate node. The high-side transistor pair includes a first transistor having a control node and a current flowpath therethrough configured to provide a current flow line between a supply voltage node and the intermediate node, and a second transistor having a current flowpath therethrough coupled to the control node of the first transistor. The low-side transistor pair includes a third transistor having a control node and a current flowpath therethrough configured to provide a current flow line between the intermediate node and the reference voltage node, and a fourth transistor having a current flowpath therethrough coupled to the control node of the third transistor. Testing circuitry is configured to be coupled to at least one of the second transistor and the fourth transistor to apply thereto a test-mode signal.

公开(公告)号：US20230074929A1

公开(公告)日：2023-03-09

申请号：US17903753

申请日：2022-09-06

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Luigi SOLE ,  Rossella GAUDIANO ,  Marta CANTARINI ,  Nicola ERRICO ,  Antonio GIORDANO

IPC: G06F1/3206 ,  G06F1/3296

Abstract: A system basis chip is described. The system basis chip comprises a power supply circuit configured to receive an input voltage and generate a plurality of voltages, and a control circuit. Specifically, the power supply circuit is configured to selectively switch on a first and a second voltage of the voltages as a function of a control signal. The control circuit measures a resistance value of an external resistor connected to a terminal and selects one of a plurality of configurations as a function of the measured resistance value, wherein a first configuration indicates that said first voltage should be switched on before said second voltage and a second configuration indicates that said second voltage should be switched on before said first voltage. Accordingly, the control circuit may generate the control signal in order to switch on in sequence the first and the second voltage according to the selected configuration.