JPH11327663A - Power source remote sensing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately provide the remote sensing of a specified part desired to improve the accuracy of voltage stability inside an electronic circuit board without being affected by the load fluctuation of other electronic components. SOLUTION: This remote sensing system is constituted by a filter 4 for bypassing both a slit dividing the power source layer of the electronic circuit board and a voltage stability required part divided by the slit and separated from the power source layer of the other electronic component, and a control part 5 for controlling a voltage supplied to an element requiring the highly accurate voltage stability in the voltage stability required part in an electronic device provided with a constant voltage power source 1, the electronic circuit board 2 operated by receiving the supply of power by a feeder 7a from the constant voltage power source, and the voltage stability required part 3 requiring the highly accurate voltage stability inside the electronic circuit board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply remote sensing function, and more particularly to a power supply remote sensing method of a remote sensing method capable of improving the accuracy of voltage stabilization at a specific portion in an electronic circuit board.

[0002]

2. Description of the Related Art In a conventional power supply remote sensing function, when it is desired to improve the accuracy of voltage stabilization of a specific portion of an electronic circuit board, the power supply remote sensing function is directly controlled by an analog line from the specific portion of the electronic circuit board where the accuracy of voltage stabilization is desired. The voltage power supply is fed back to the remote sense line to try to make the voltage value of a specific portion in the electronic circuit board accurate.

[0003]

However, the first problem with the above-mentioned method is that the load fluctuation of other electronic components on the electronic circuit board also occurs in a specific portion of the electronic circuit board where it is desired to improve the accuracy of voltage stabilization. Is to be affected.
The reason for this is that the power supply layer of the electronic circuit board is a solid layer, so that the power of a specific part where the accuracy of voltage stabilization is desired and the power of other electronic components are supplied from the same location.

[0004] The second problem is that the remote sense line fed back from a specific portion of the electronic circuit board to which the accuracy of voltage stability is desired to be improved to the constant voltage power supply is insufficient in accuracy. The reason is that the remote sense line itself is an analog line and is affected by a change in the resistance component ratio of the electric wire due to a load change.

SUMMARY OF THE INVENTION The present invention has been made in view of such a background, and remote sensing of a specific portion in an electronic circuit board for which the accuracy of voltage stabilization is desired is improved without being affected by load fluctuation of other electronic components. Another object of the present invention is to provide a power supply remote sensing method that can be realized accurately.

[0006]

According to a first aspect of the present invention, there is provided a constant voltage power supply, an electronic circuit board which operates by receiving power supply from the constant voltage power supply via a power supply line, and an electronic circuit board in the electronic circuit board. In an electronic device having a voltage stabilizing part that requires high-precision voltage stabilization, a slit that divides a power supply layer of the electronic circuit board is divided by the slit and separated from a power supply layer of another electronic component circuit. The voltage stabilizing unit, a filter that bypasses between power supply layers divided by the slit, and a control unit that controls a voltage supplied to an element that requires high-precision voltage stabilization in the voltage stabilizing unit. And a power supply remote sensing method comprising:

According to a second aspect of the present invention, the control unit includes:
A first comparator that compares a voltage (detection voltage) supplied to an element requiring high-precision voltage stabilization in the voltage required stabilizing section with a reference voltage, and the first comparator via the detection voltage and a voltage margin circuit; A second digital signal line for instructing a voltage drop and a second signal line for instructing a voltage increase to control the constant voltage power supply. Claim 1.
The power supply remote sensing method described in (1) is provided.

According to a third aspect of the present invention, the control unit comprises a voltage sensor, monitors the detected voltage, and notifies the voltage value to the constant voltage power supply via a digital signal line. A power supply remote sensing method according to claim 1 is provided.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a power supply remote sensing system according to an embodiment of the present invention. In this figure, an electronic circuit board (2) supplied with power from a constant voltage power supply (1) via a power supply line (7a)
Has a voltage stabilizing part (3) divided into slits in the power supply layer, has a filter (4) for bypassing between the divided slits, and requires voltage stabilization inside the voltage stabilizing part (3). And a control unit (5) for remotely sensing the LSI (6) to be used with a remote sense line (7e). Also, a reference voltage line (7b) for connecting a set voltage directly from the constant voltage power supply (1) to the control unit (5), and a digital signal for connecting a digital signal from the control unit (5) to the constant voltage power supply (1). Signal line 1
(7c) and the digital signal line 2 (7d).

[0010] The operation of the power supply remote sensing system having such a configuration is described in connection with the electronic circuit board (2) supplied with power from the constant voltage power supply (1) by the power supply line (7a). In the case where there is an LSI (6) that requires voltage stabilization without being affected by the load fluctuation, the power supply layer of the electronic circuit board (2) is divided into slits to provide a voltage stabilizing part (3). L inside voltage stabilizing part (3)
An SI (6) is provided. Power is supplied to the LSI via a filter (4) in which a power supply layer of the electronic circuit board (2) is provided between the slits.

In the voltage stabilization of the LSI (6),
A control section (5) is provided inside the voltage stabilizing section (3), and remote sensing is performed by a remote sense line (7e). As a remote sensing method, a constant voltage power supply is used to connect a reference voltage line (7
In b), the control unit (5) receives the set voltage directly, and compares this value with the voltage of the LSI (6) detected by the remote sense line (7e) in the control unit (5). Instruct 1) to adjust the voltage. The voltage adjustment instruction is made by a digital signal. The digital signal line 1 (7c) is activated when the voltage is increased, and the digital signal line 2 (7d) is activated when the voltage is decreased.
The operation is performed until the voltage supplied to the LSI (6) becomes equal to the set voltage.

A more specific circuit according to an embodiment of the present invention will be described in detail with reference to FIG. A power supply solid layer PKG (2) that is supplied with power from a constant voltage power supply (1) by a power supply line (7a), and a voltage stabilizing part (3) divided into slits by the power supply layer of the PKG (2) is provided. A filter (4) for bypassing between the divided slits, and remotely sensing an LSI (6) requiring voltage stabilization inside the voltage stabilizing section (3) with a remote sense line (7e). It has a control unit (5).

A reference voltage line (7b) for connecting a set voltage directly from the constant voltage power supply (1) to the control unit (5);
Digital signal line 1 (7c) and digital signal line 2 connected by digital signals from control unit (5) to constant voltage power supply (1)
(7d). Further, LS is provided inside the control unit (5).
A first comparator (5) for comparing a voltage sensed from I (6) with a reference voltage directly received from the constant voltage power supply (1).
1) connecting the sensed voltage and the reference voltage with a resistor 5
3. It has a second comparator for comparing the voltage margin divided by the resistor 54 with the voltage margin.

In the PKG (2) of the power supply solid layer supplied from the constant-voltage power supply (1) by the power supply line (7a), the voltage required is obtained by slitting the power supply layer with other electronic components on the PKG (2). Section (3) is provided. Power is supplied to the voltage stabilizing section (3) by the filter (4) provided between the slits, and is supplied to the LSI (6) requiring voltage stabilization. For the voltage stabilization of the LSI (6), remote control is performed by a control unit (5) provided inside the voltage stabilization unit (3).

[0015] The remote sensing system includes a control unit (5)
A comparator (51) and a comparator (52) provided inside compare with a set voltage directly received from a constant voltage power supply (1) on a reference voltage line (7b). An LSI is provided between the comparator (51) and the comparator (52).
The voltage margin (53) required in (6) is provided.
Accordingly, the comparator (51) compares the voltage supplied to the LSI (6) with the upper limit, and the comparator (52) compares the voltage with the lower limit. When the remotely sensed voltage of the LSI (6) exceeds the upper limit, the comparator (51) sets the constant voltage power supply (1).
Then, a voltage drop is instructed via the digital signal line 1 (7c).

When the remotely sensed voltage of the SI (6) exceeds the lower limit, the comparator (52) instructs the constant voltage power supply (1) to increase the voltage via the digital signal line 2 (7d). When both the digital signal line 1 (7c) and the digital signal line 2 (7d) are inactive, the LSI
The voltage supplied to (6) is stable at the set voltage, and remote sensing is performed until this state is reached.

Next, another embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. In this figure, a voltage sensor (55) is provided inside a control unit (5). Voltage sensor (5
5) monitors the voltage of the LSI (6) and notifies the voltage value to the constant voltage power supply (1) via a digital signal line. Further, the notification of the voltage value can be sent to software or the like that manages the state of the computer, and by preparing a memory, it becomes possible to leave it as a log at the time of maintenance.

As described above, the power supply layer of the electronic circuit board is divided into slits, a specific portion within the electronic circuit board where the accuracy of voltage stability is to be improved is separated from the power supply layer of other electronic components, and a filter is provided between the slits. By performing the remote sensing of a specific part that wants to improve the accuracy of voltage stability by a control unit provided in the specific part, the specific part that wants to improve the accuracy of voltage stability in the electronic circuit board can be connected to another electronic component. The set voltage can be supplied without being affected by the load fluctuation. In addition, by using a digital signal to instruct the constant voltage power supply from the control unit, the effect of the change in the resistance component ratio due to the load fluctuation is not affected, so that the accuracy of the remote sensing can be performed more accurately.

The operation of one embodiment of the present invention has been described above in detail with reference to the drawings. However, the present invention is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. The present invention is also included in the present invention.

[0020]

As described above, the first effect obtained by the present invention is that it is possible to supply a stable voltage to an LSI without receiving a load fluctuation of other electronic components. The reason is that the power supply layer of the electronic circuit board is divided into slits and remote sensing is performed inside the slits.

A second effect is that power supply noise of the LSI is not emitted to the electronic circuit board. The reason is that since remote sensing is performed inside the slit, noise transmitted by the LSI to the electronic circuit board itself or other electronic components on the electronic circuit board can be prevented inside the slit.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a power supply remote sensing system according to an embodiment of the present invention.

FIG. 2 is a circuit diagram of a power supply remote sensing system according to an embodiment of the present invention.

FIG. 3 is a circuit diagram of a power supply remote sensing system according to another embodiment of the present invention.

[Description of Signs] 1 constant voltage power supply 2 electronic circuit board (PKG) 3 voltage stabilizer 4 filter 5 controller 51 first comparator 52 second comparator 53 resistor 54 resistor 55 voltage sensor 6 LSI 7a power supply line 7b reference Voltage line 7c Digital signal line 1 7d Digital signal line 2 7e Remote sense line

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[Procedure amendment]

[Submission date] April 7, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

According to a third aspect of the present invention, the control unit needs a highly accurate voltage stabilization in the voltage required stabilizing unit.
2. A power supply remote sensing method according to claim 1, further comprising a voltage sensor for monitoring a voltage supplied to the power supply, and notifying the voltage value to the constant voltage power supply via a digital signal line.

Claims (3)

[Claims] 1. A constant voltage power supply, an electronic circuit board that operates by receiving power supply from the constant voltage power supply through a power supply line, and a voltage stabilizing unit that requires high-precision voltage stabilization in the electronic circuit board. An electronic device having: a slit that divides a power supply layer of the electronic circuit board; a voltage stabilizing portion that is divided by the slit and separated from a power supply layer of another electronic component circuit; And a control unit that controls a voltage supplied to an element that requires high-precision voltage stabilization in the required voltage stabilizing unit. 2. The control section, comprising: a first comparator for comparing a voltage (detection voltage) supplied to an element requiring high-precision voltage stabilization in the voltage required stabilization section with a reference voltage; A second digital signal line for instructing a voltage drop, a second digital signal line for instructing a voltage increase, and a second comparator configured to compare the detected voltage with the reference voltage via a voltage margin circuit. The power supply remote sensing method according to claim 1, wherein the constant voltage power supply is controlled by the following. 3. The power supply according to claim 1, wherein the control unit is configured by a voltage sensor, monitors the detection voltage, and notifies the voltage value to the constant voltage power supply via a digital signal line. Remote sense method.