Device for operating an electronic system of a vehicle

Patent metadata

Field	Value
Publication number	US-12301038-B2
Application number	US-202217808707-A
Country	US
Kind code	B2
Filing date	Jun 24, 2022
Priority date	Jan 9, 2020
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

The disclosure provides a device for operating an electronic system. The device includes a power supply unit that, during operation, provides a supply voltage on a supply potential output. The power supply unit has an enable input via which the supply voltage can be enabled and disabled by an enable signal. In a power-latch phase of the electronic system in which the enable signal is not present, the power supply unit provides the supply voltage upon receiving a trigger signal even when the enable signal is not present. The device includes a microcontroller supplied with the supply voltage on a second supply potential input connection when the enable signal is present or when the microcontroller, in the power-latch phase, generates the trigger signal and transmits it to the trigger signal input. Upon receiving a control command, the power supply unit suppresses deactivation of the supply voltage for supplying the microcontroller.

First claim

What is claimed is:

1. A device for operating an electronic system of a vehicle, the device comprising:
a power supply unit that, during operation, is supplied with a battery voltage on a first supply potential input connection and that provides a supply voltage on a supply potential output connection, the power supply unit includes an enable input via which the supply voltage on the supply potential output connection can be enabled and disabled by an enable signal, and a trigger signal input for receiving a trigger signal, the power supply unit is designed, in a power-latch phase of the electronic system in which the enable signal is not present, to provide the supply voltage upon receiving the trigger signal even when the enable signal is not present on the supply potential output connection; and
a microcontroller that is supplied with the supply voltage on a second supply potential input connection when the enable signal is present on the enable input or when the microcontroller, in the power-latch phase, generates the trigger signal and transmits it to the trigger signal input,
wherein the power supply unit, upon receiving a control command, suppresses deactivation of the supply voltage for supplying the microcontroller.

2. The device of claim 1 , wherein the microcontroller issues the control command.

3. The device of claim 1 , wherein the power supply unit suppresses the deactivation of the supply voltage for a specified time period since the receipt of the control command.

4. The device of claim 3 , wherein the power supply unit restarts the specified time period since the receipt of a respective control command.

5. The device of claim 1 , wherein the power supply unit suppresses the deactivation of the supply voltage for supplying the microcontroller after receiving the control command, independently of an absence of the trigger signal and/or independently of a received reset.

6. The device of claim 1 , wherein the power supply unit suppresses the deactivation of the supply voltage for supplying the microcontroller after receiving the control command, even if no enable signal is present at the enable input.

7. The device of claim 1 , wherein the microcontroller increments or decrements a counter by 1, starting from a specified counter start value, with each call of a control command, wherein if the counter has reached a specified counter end value, the control command is no longer issued.

8. The device of claim 1 , wherein the microcontroller calls the control command once or cyclically or indefinitely.

9. The device of claim 1 , wherein the power supply unit increments or decrements a counter by 1, starting from a given counter start value, upon each receipt of a control command, wherein if the counter has reached a specified counter end value, the deactivation of the supply voltage for supplying the microcontroller is not suppressed.

10. The device of claim 1 , wherein the power supply unit comprises a control unit designed to generate, upon receipt of the control command, a control signal for a controllable switching unit connected to the first supply potential input connection for switching the battery voltage.

Assignees

• Vitesco Tech Gmbh

Inventors

• Wunderlich Andreas
• Fisch Alfons
• Desgeorge Aurore

Classifications

• H02J7/855

  with circuits adapted for supplying loads from the battery · CPC title

• H02J7/90 Primary

  Regulation of charging or discharging current or voltage · CPC title

• B60R16/033

  characterised by the use of electrical cells or batteries (for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36) · CPC title

• G06F11/1441

  Resetting or repowering · CPC title

• G06F11/076

  by exceeding a count or rate limit, e.g. word- or bit count limit · CPC title