CN217213524U - Electronic system and vehicle - Google Patents

Electronic system and vehicle Download PDF

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Publication number
CN217213524U
CN217213524U CN202123183214.1U CN202123183214U CN217213524U CN 217213524 U CN217213524 U CN 217213524U CN 202123183214 U CN202123183214 U CN 202123183214U CN 217213524 U CN217213524 U CN 217213524U
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node
switch
electronic system
electronic
circuit
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P·贝瓦努
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STMicroelectronics Rousset SAS
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STMicroelectronics Rousset SAS
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

Embodiments in accordance with the present disclosure relate to electronic systems and vehicles. An electronic system includes at least one first electronic circuit and a voltage regulator connected electrically in parallel between a first node and a second node, where the voltage regulator is configured to generate a regulated voltage at the second node. At least one second electronic circuit is connected between the second node and a third node that provides a reference for the regulated voltage. The electronic system and the vehicle according to the present disclosure can reduce static power consumption.

Description

Electronic system and vehicle
Technical Field
The present disclosure generally relates to electronic systems including electronic circuits.
Background
Static power consumption of an electronic system is the electrical power consumed by the electronic system independent of its activity. For example, for an electronic system corresponding to an integrated circuit including a metal oxide semiconductor field effect transistor, static consumption includes consumption to maintain a logic state of the transistor. It is generally desirable that the static power consumption of an electronic system be as low as possible.
For some applications, static power consumption of an electronic system may be a critical factor. This is also the case in the automotive field, where the electronic system corresponds to the on-board network of a motor vehicle. In fact, when the electronic system is powered by a battery, the static power consumption of the electronic system directly affects the endurance of the battery. Furthermore, the high power consumption also leads to an increase in the temperature of the electronic module, which is detrimental. Furthermore, there is a tendency for the supply voltage of the on-board network of the car to increase, which leads to an increase in the static power consumption.
There is a need in the art to provide an electronic system that overcomes all or some of the aforementioned disadvantages of electronic systems.
There is also a need in the art for electronic systems having reduced static power consumption.
SUMMERY OF THE UTILITY MODEL
It is an object of the present disclosure to provide an electronic system and a vehicle to at least partially solve the above-mentioned problems in the prior art.
In a first aspect, the present disclosure provides an electronic system comprising: a first node; a second node; a third node; at least one first electronic circuit powered between a first node and a second node; a voltage regulator circuit connected between the first node and the second node and configured to provide a regulated voltage at the second node; wherein the at least one first electronic circuit and the voltage regulator circuit are electrically connected in parallel between the first node and the second node; and at least one second electronic circuit powered between the second node and the third node.
In one embodiment, the electronic system further comprises a first switch in series with the at least one first electronic circuit between the first node and the second node.
In one embodiment, the electronic system further comprises a second switch coupling the third node to a connection node, the connection node being connected in series between the at least one first electronic circuit and the first switch.
In one embodiment, the electronic system further comprises at least one third electronic circuit, the at least one third electronic circuit being powered between the first node and a third node.
In one embodiment, the electronic system further comprises at least one third switch in series with the at least one third electronic circuit between the first node and the third node.
In one embodiment, the at least one first electronic circuit comprises a voltage divider.
In one embodiment, the at least one first electronic circuit comprises an amplifier.
In one embodiment, the electronic system further comprises a voltage source connected between the first node and the third node, and the voltage source is configured to provide a voltage greater than 15V, and wherein the voltage regulator is configured to pass a voltage less than 10V between the second node and the third node.
In a second aspect, the present disclosure provides a vehicle. The vehicle comprises an electronic system according to the first aspect of the present disclosure, and a voltage source connected between the first node and the third node.
In one embodiment, the voltage source comprises a battery.
In a third aspect, the present disclosure provides an electronic system. The electronic system includes: a first node; a second node; a third node; wherein the first node is configured to receive a supply voltage referenced to the third node; at least one first electronic circuit having a first terminal connected to a first node and a second terminal connected to a second node; a voltage regulator circuit receiving power from the first node and configured to generate a regulated voltage referenced to the third node at the second node; and at least one second electronic circuit having a first terminal connected to the second node and a second terminal connected to the third node.
In one embodiment, the electronic system further comprises a first switch in series with the at least one first electronic circuit between the first node and the second node.
In one embodiment, the electronic system further comprises a second switch coupling the third node to a connection node, the connection node being connected in series between the at least one first electronic circuit and the first switch.
In one embodiment, the first switch is controlled to be closed when the second switch is controlled to be open, and the first switch is controlled to be open when the second switch is controlled to be closed.
In one embodiment, the electronic system further includes at least one third electronic circuit having a first terminal connected to the first node and having a second terminal connected to the third node.
In one embodiment, the electronic system further comprises at least one third switch in series with the at least one third electronic circuit between the first node and the third node.
In a fourth aspect, the present disclosure provides a vehicle. The vehicle comprises an electronic system according to the third aspect of the present disclosure and a voltage source configured to provide a supply voltage.
In one embodiment, the voltage source comprises a battery.
In a fifth aspect, the present disclosure provides an electronic system. The electronic system includes: a first node; a second node; a third node; a battery voltage connected between the first node and the third node; a voltage regulator circuit receiving the battery voltage from the first node and configured to generate a regulated voltage between the second node and the third node that is less than the battery voltage; a first electronic circuit connected between the first node and the third node; a second electronic circuit connected in parallel with the voltage regulator circuit between the first node and the third node; and a third electronic circuit connected between the first node and the third node.
In one embodiment, the electronic system further comprises: a first switch connected in series with the first electronic circuit between the first node and a third node, the first switch being controlled by a first control signal; a second switch connected in series with the second electronic circuit between the first node and a third node, the second switch being controlled by a second control signal; and a third switch connected in series with the second electronic circuit between the first node and the second node, the third switch being controlled by a third control signal; wherein the second switch is controlled to be closed in response to the second control signal when the third switch is controlled to be open in response to the third control signal, and the second switch is controlled to be open in response to the second control signal when the third switch is controlled to be closed in response to the third control signal.
The electronic system and the vehicle according to the present disclosure can reduce static power consumption.
Drawings
The above features and advantages, and other features and advantages, are described in detail in the following description of specific embodiments, given by way of example and not limitation, in connection with the accompanying drawings, in which:
fig. 1 shows, partially and schematically, an example of an electronic system powered by a battery pack;
FIG. 2 partially and schematically illustrates an embodiment of an electronic system powered by a battery pack;
FIG. 3 partially and schematically illustrates another embodiment of an electronic system powered by a battery pack;
FIG. 4 partially and schematically illustrates a more detailed example of a portion of the electronic system of FIG. 1;
FIG. 5 partially and schematically illustrates a more detailed embodiment of a portion of the electronic system of FIG. 2;
FIG. 6 partially and schematically illustrates another more detailed example of a portion of the electronic system of FIG. 1; and
fig. 7 shows, partially and schematically, another more detailed embodiment of a portion of the electronic system of fig. 2.
Detailed Description
One embodiment provides an electronic system including at least one first electronic circuit, a voltage regulator, and a second electronic circuit electrically connected in parallel between a first node and a second node, the at least one first electronic circuit being powered between the first node and the second node, the voltage regulator being between the first node and the second node, the second electronic circuit being between the second node and a third node.
An embodiment also provides a method comprising: the power supply between at least a first node and a second node of the first electronic circuit, the voltage between the second node and a third node being regulated by a regulator electrically parallel to the first electronic circuit between the first node and the second node, and the power supply between the second node and the third node of the second electronic circuit.
According to one embodiment, an electronic system or method includes a first switch in series with a first electronic circuit between a first node and a second node.
According to one embodiment, an electronic system or method includes a second switch coupling a third node to a connection node connected in series between a first electronic circuit and a first switch.
According to one embodiment, the at least one third electronic circuit is powered between the first node and the third node.
According to one embodiment, the at least one third switch is electrically connected in series with the third electronic circuit between the first node and the third node.
According to one embodiment, the first electronic circuit comprises a voltage divider.
According to one embodiment, the first electronic circuit comprises an amplifier.
According to one embodiment, the electronic system receives a voltage greater than 15V between the first node and the third node, and the regulator is configured to pass a voltage less than 10V between the second node and the third node.
An embodiment also provides a vehicle comprising an electronic system as previously defined and a voltage source for powering the electronic system.
According to one embodiment, the voltage source comprises a battery pack.
Like features are designated by like reference numerals in the different figures. In particular, structural and/or functional features that are common among the various embodiments may have the same reference numerals and may have the same structural, dimensional, and material properties. For the sake of clarity, only steps and elements useful for understanding the embodiments described herein are illustrated and described in detail. Unless otherwise stated, when two elements are referred to as being connected together, this means a direct connection without any intervening elements other than conductors, and when two elements are referred to as being coupled together, this means that the two elements can be connected or that the two elements can be coupled through one or more other elements. Unless otherwise indicated, the expressions "about", "substantially" and "approximately" mean within 10%, and preferably within 5%.
FIG. 1 shows a power supply system with a supply voltage V IN An example of an electronic system 10 powered by a source 12, the source 12 being, for example, a battery or a generator. Electronic system 10 includes a node a and a node B between which a supply voltage is applied. For electronic system 10, node B acts as a source of the low reference potential GND.
Electronic system 10 comprises a first circuit branch B connected between node a and node B 0 . First circuit branch B 0 A voltage regulator 16 is included that supplies M electronic circuits 18(Circuit _ L), M being an integer greater than or equal to 1, as an example three electronic circuits 18(M ═ 3) are shown in fig. 1.
The voltage regulator 16 includes an output node C and an input coupled to node A, and is configured to deliver a voltage V regulated between node C and node B REG . M electronic circuits 18 are assembled in parallel between the output node C and the node B of the voltage regulator 16. According to one embodiment, the voltage regulator 16 is a linear regulator, such as a shunt-type regulator or a series regulator. Voltage V REG Can be lower than the voltage V IN And the electronic circuit 18 may be capable of operating at a voltage below V IN Is supplied to the circuit.
Electronic system 10 comprises a second circuit branch B connected between node a and node B 1 Or a plurality of second circuit branches B 1 To B N N is a natural integer greater than or equal to 2, three second circuit branches B being shown in fig. 1 as an example 1 、B 2 、B 3 (N ═ 3). Each second circuit branch B j An electronic Circuit 20(Circuit _ H) is included, where j varies from 1 to N.
According to an example of application, the electronic system 10 may correspond to a portion of an on-board network of a motor vehicle. The electronic circuit 18 is an analog circuit or a digital circuit powered by the voltage regulator 16. Electronic circuitry 20 may include circuitry that delivers voltages that power other circuitry (not shown) of electronic system 10.
Let I TOTAL Is the current carried at node A, and let I j For each circuit branch B flowing from node A j Where j varies from 0 to N. In particular, the current I 0 Is the current flowing through the voltage regulator 16. By applying the node equation, current I 0 Is equal to current I j Where j varies from 0 to N. While the system 10 is inactive, the receiving voltage V IN Time, current I 0 To I N May not be equal to zero. Current I 0 To I N May then correspond to leakage current. The static power consumption of the electronic system 10 then corresponds to the electric power consumed by the electrical system, i.e. to the voltage V IN And current I TOTAL The product of (a). Note that: current J 1 To J M Refers to the current flowing in the M electronic circuits 18. By applying the node equation, current J is applied to electronic system 10 1 To J M Is equal to the current I 0 。
To reduce the static power consumption of electronic system 10, it is common practice to reduce the static power consumption of each of circuits 18 and 20. Another common practice is to interrupt the power to certain circuits 18 and 20 in possible circumstances related to the activity of electronic system 10. To this end, circuit branch B is taken as an example j May comprise a switch 22 in series with the electronic circuit 20, wherein j varies from 1 to N, circuit branch B in fig. 1 3 The upper switch 22 is shown as an example. The switch 22 may be controlled by a signal S, for example, transmitted by one of the electronic circuits 18. The turning off of the switch 22 results in a current I j Stopping flow through circuit branch B j Where j varies from 1 to N.
However, for some applications, the reduction in static power consumption of electronic system 10 obtained by reducing the static power consumption of each of circuits 18 and 20 and/or by interrupting the power to certain circuits 18 and 20 may not be sufficient.
Fig. 2 partially and schematically illustrates an embodiment of an electronic system 30. Electronic system 30 includes all of the components of electronic system 10, except for circuit branch B j Is connected between node a and node C, instead of between node a and node B, where j varies from 1 to N. For example, in FIG. 2, circuit branch B 1 And B 2 Shown as connected between node a and node C.
Line I' 0 The current flowing through the voltage regulator 16 of the electronic system 30 of fig. 2 is highlighted by the fact that: the magnitude of the current is related to the current I flowing through the voltage regulator 16 of the electronic system 10 of FIG. 1 0 Is different. Through circuit branch B of the electronic system 30 of FIG. 2 j Of other current I j Essentially the same as electronic system 10, with j varying from 1 to N. Current J for electronic system 30 by applying the node equation 1 To J M Is equal to current I' 0 And a circuit branch B connected to node C j Current of (I) j The sum of (a) and (b). Thus, for the electronic system 30, the current I TOTAL Is equal to current I' 0 And circuit branch B not connected to node C j The sum of the currents.
Thus, the current I of the electronic system 30 TOTAL Is less than the current I of the electronic system 10 TOTAL The strength of (2). A reduction in the static power consumption of the electronic system 30 relative to the electronic system 10 is thus obtained.
For all circuit branches B j (where j varies from 1 to N) may be expected not to be connected between node A and node C, but for circuit branch B j Some circuit branches (where j varies from 1 to N) may then be expected to remain connected between node a and node B. This may occur because current I 'may be desired for operation of voltage regulator 16' 0 Keeping a positive value. When the circuit branch B j This may further occur when the electronic circuit 20 requires a voltage reference with little noise for its operation. In fact, the potential at node B is noisier than the potential at node CIs small. When the circuit branch B j Has a consumption current I with noise capable of interfering with the regulated voltage at the node C j This may also be the case.
According to one embodiment, the supply voltage V IN Greater than 10V. According to one embodiment, a converter (not shown) may be provided between the battery 12 and the node a. According to one embodiment, the voltage regulator 16 is configured to deliver a regulated voltage V in the range of 2V to 6V (e.g., approximately 3V or approximately 5V) REG 。
As an example, the electronic circuit 20 may be a circuit that delivers a voltage for biasing an electronic element (not shown) of the electronic system (e.g., an insulated gate field effect transistor, also referred to as a MOS transistor).
Advantageously, no flow through circuit branch B is induced j Current of (I) j A reduction in the static power consumption of the system 30 is obtained with a reduction in the intensity of j, where j varies from 1 to N. This causes a current I j A sufficiently high strength can be maintained for the electronic circuit 20 to function properly.
Fig. 3 shows, partially and schematically, another embodiment of an electronic system 40. Electronic system 40 includes all of the elements of electronic system 30 shown in fig. 2, and is for circuit branch B coupled to node C j Each circuit branch (where j varies from 1 to N) further includes a first switch SW1 j And a second switch SW2 j First switch SW1 j Branch circuit B j Is coupled to node C, a first switch SW2 j Branch circuit B j Is coupled to node B. Switch SW1 j And a switch SW2 j From signal P j Are controlled complementarily. This means that when switch SW1 is turned on j And a switch SW2 j Is turned off, switch SW1 j And a switch SW2 j The other switch in (b) is turned on. Signal P j May be communicated by one of the circuits 18. Therefore, switch SW1 will be provided j And a switch SW2 j Circuit branch B of j Connections are possible between node a and node B or between node a and node C. Is shown in FIG. 3The example has shown a case: for circuit branch B 1 In circuit branch B 1 And a switch SW1 between circuit 20 and node C 1 And in circuit branch B 1 And a switch SW2 between circuit 20 and node B 1 And for circuit branch B 2 Circuit branch B 2 And a switch SW1 between circuit 20 and node C 2 And circuit branch B 2 And a switch SW2 between circuit 20 and node B 2 。
Fig. 4 shows, partially and schematically, the circuit branch B 1 Corresponds to a more detailed example of a part of the electronic system of fig. 1 in the case of a voltage divider. Circuit branch B 1 Comprises: a first resistor R1 between node a and node OUT, and a second resistor R2 between node OUT and node B. Voltage V between node OUT and node B OUT May be used to power another component (not shown) of the electronic system 10.
Fig. 5 shows, partially and schematically, the circuit branch B 1 Also corresponds to a more detailed example of a part of the electronic system 30 of fig. 2 in the case of a voltage divider. The electronic circuit 20 comprises a first resistor R '1 between the node a and the node OUT and a second resistor R'2 between the node OUT and the node C. Voltage V between node OUT and node B OUT May be used to power another component (not shown) of the electronic system 30. The resistances of resistors R '1 and R'2 will be adjusted such that the voltage V of the electronic system 30 will be OUT Voltage V of electronic system 10 OUT The same is true.
Fig. 6 shows partially and schematically the circuit branch B 1 Corresponds to a more detailed example of a portion of the electronic system 10 of fig. 1 in the case of an amplifying circuit. Circuit branch B 1 Includes an amplifier 42 having a supply node connected to node a and having another supply node connected to node E. Circuit branch B 1 Also includes a current source 44 that delivers a current I between node E and node B 1 . Providing a constant voltage source 46 between node A and node E, e.g.A zener diode. The input of amplifier 42 and the output of amplifier 42 are connected to other electronic circuits (not shown) of electronic system 10.
Fig. 7 shows, partially and schematically, the circuit branch B 1 Corresponds also to a more detailed example of a part of the electronic system 30 of fig. 2 in the case of an amplifying circuit. The amplifying circuit of fig. 2 has the same structure as that of fig. 6 except that a current source 44 is assembled between the node E and the node C.
Various embodiments and modifications have been described. Those skilled in the art will appreciate that certain features of these various embodiments and variations may be combined, and that other variations will occur to those skilled in the art. Finally, the actual implementation of the described embodiments and variants is within the abilities of a person skilled in the art based on the functional indications given above.

Claims (20)

1. An electronic system, comprising:
a first node;
a second node;
a third node;
at least one first electronic circuit powered between the first node and the second node;
a voltage regulator circuit connected between the first node and the second node and configured to provide a regulated voltage at the second node;
wherein the at least one first electronic circuit and the voltage regulator circuit are electrically parallel between the first node and the second node; and
at least one second electronic circuit powered between the second node and the third node.
2. The electronic system of claim 1, further comprising a first switch in series with the at least one first electronic circuit between the first node and the second node.
3. The electronic system of claim 2, further comprising a second switch coupling the third node to a connection node connected in series between the at least one first electronic circuit and the first switch.
4. The electronic system of claim 1, further comprising at least one third electronic circuit, the at least one third electronic circuit being powered between the first node and the third node.
5. The electronic system of claim 4, further comprising at least one third switch in series with the at least one third electronic circuit between the first node and the third node.
6. The electronic system of claim 1, wherein the at least one first electronic circuit comprises a voltage divider.
7. The electronic system of claim 1, wherein the at least one first electronic circuit comprises an amplifier.
8. The electronic system of claim 1, further comprising a voltage source connected between the first node and the third node and configured to provide a voltage greater than 15V, and wherein the voltage regulator is configured to pass a voltage less than 10V between the second node and the third node.
9. A vehicle comprising the electronic system of claim 1, and a voltage source connected between the first node and the third node.
10. The vehicle of claim 9, characterized in that the voltage source comprises a battery.
11. An electronic system, comprising:
a first node;
a second node;
a third node;
wherein the first node is configured to receive a supply voltage referenced to the third node;
at least one first electronic circuit having a first terminal connected to the first node and a second terminal connected to the second node;
a voltage regulator circuit receiving power from the first node and configured to generate a regulated voltage at the second node referenced to the third node; and
at least one second electronic circuit having a first terminal connected to the second node and a second terminal connected to the third node.
12. The electronic system of claim 11, further comprising a first switch in series with the at least one first electronic circuit between the first node and the second node.
13. The electronic system of claim 12, further comprising a second switch coupling the third node to a connection node connected in series between the at least one first electronic circuit and the first switch.
14. The electronic system of claim 13, wherein the first switch is controlled to be closed when the second switch is controlled to be open, and the first switch is controlled to be open when the second switch is controlled to be closed.
15. The electronic system of claim 11, further comprising at least one third electronic circuit having a first terminal connected to the first node and having a second terminal connected to the third node.
16. The electronic system of claim 15, further comprising at least one third switch in series with the at least one third electronic circuit between the first node and the third node.
17. A vehicle comprising the electronic system of claim 11 and a voltage source configured to provide the supply voltage.
18. The vehicle of claim 17, characterized in that the voltage source comprises a battery.
19. An electronic system, comprising:
a first node;
a second node;
a third node;
a battery voltage connected between the first node and the third node;
a voltage regulator circuit receiving the battery voltage from the first node and configured to generate a regulated voltage between the second node and the third node that is less than the battery voltage;
a first electronic circuit connected between the first node and the third node;
a second electronic circuit connected in parallel with the voltage regulator circuit between the first node and the third node; and
a third electronic circuit connected between the first node and the third node.
20. The electronic system of claim 19, further comprising:
a first switch connected in series with the first electronic circuit between the first node and the third node, the first switch being controlled by a first control signal;
a second switch connected in series with the second electronic circuit between the first node and the third node, the second switch being controlled by a second control signal; and
a third switch connected in series with the second electronic circuit between the first node and the second node, the third switch controlled by a third control signal;
wherein the second switch is controlled to be closed in response to the second control signal when the third switch is controlled to be open in response to the third control signal, and the second switch is controlled to be open in response to the second control signal when the third switch is controlled to be closed in response to the third control signal.
CN202123183214.1U 2020-12-18 2021-12-17 Electronic system and vehicle Active CN217213524U (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR2013744A FR3118217B1 (en) 2020-12-18 2020-12-18 Electronic system with reduced static consumption
FR2013744 2020-12-18
US17/550,256 US20220194308A1 (en) 2020-12-18 2021-12-14 Electronic system with a decreased static power consumption
US17/550,256 2021-12-14

Publications (1)

Publication Number Publication Date
CN217213524U true CN217213524U (en) 2022-08-16

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CN202111552372.1A Pending CN114647267A (en) 2020-12-18 2021-12-17 Electronic system with reduced static power consumption

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