CN114675698A - Voltage regulation method of multi-load system based on single bus communication - Google Patents
Voltage regulation method of multi-load system based on single bus communication Download PDFInfo
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- CN114675698A CN114675698A CN202210263781.8A CN202210263781A CN114675698A CN 114675698 A CN114675698 A CN 114675698A CN 202210263781 A CN202210263781 A CN 202210263781A CN 114675698 A CN114675698 A CN 114675698A
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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
- G05F1/561—Voltage to current converters
Abstract
The invention discloses a voltage regulation method of a multi-load system based on single bus communication, which comprises the following steps: a first terminal and a second terminal are arranged on each load of the load ends, the first terminals of all the loads are connected by a single bus, and the second terminal of at least one load is connected with a voltage regulation port of the power supply end; when the supply voltage meets the voltage value requirement, the first terminal keeps a preset first level value, and when the supply voltage does not meet the voltage value requirement, the first terminal outputs a second level value with the polarity opposite to that of the first level value; the second terminal outputs a second signal when the first terminal of the load is at a second level value; the second signal is a power supply voltage boosting signal, and the power supply end controls the power supply to boost the voltage after receiving the power supply voltage boosting signal.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a voltage regulation method of a multi-load system based on single bus communication.
Background
In the integrated electronic circuit in the prior art, one power supply is usually used to supply power to a plurality of independent identical loads, so as to reduce the number of devices, improve the reliability of the system, reduce the area of a circuit board and reduce the cost. To further improve efficiency, a voltage or current signal is often connected directly to the power supply feedback terminal to dynamically adjust the power supply voltage based on the load condition. When the voltage signal is adopted to adjust the power supply voltage, the reference ground signal fluctuates due to the fluctuation of the load current, and the voltage signal is a signal sensitive to noise and is easy to be interfered, so that the power supply output voltage fluctuates. When the current signals are adopted to adjust the power supply voltage, because the sum of the current signals is an addition relation, when a plurality of modules simultaneously send power supply voltage adjustment request signals, an overshoot phenomenon occurs, so that the power supply output voltage jumps instantly, and the efficiency is reduced. And even system oscillations.
Meanwhile, if the voltage current feedback line is set for each individual load, the integrated circuit layout area of the entire circuit is greatly increased. Therefore, there is a need in the art for a method for voltage-current regulation of multiple loads that can be performed efficiently, while simplifying the circuit structure and reducing the layout area of the integrated circuit.
Disclosure of Invention
One of the technical problems to be solved by the present invention is to provide a method for increasing single bus communication between load modules in view of the insufficient voltage adjustment manner in the prior art, wherein only an adjustment request signal needs to be sent between the modules, and only one of the modules outputs an adjustment request or a signal to a power supply feedback end or a remote control end after the signal is weighted, so that the number of sensitive signals can be effectively reduced, the circuit board wiring is facilitated, the anti-interference performance of the voltage adjustment signal can be effectively improved, the power supply fluctuation is avoided, and the overall efficiency is improved.
In order to solve the above technical problem, the present invention provides a voltage regulation method for a multi-load system based on single bus communication, which includes:
arranging a first terminal and a second terminal on each load of the load ends, wherein the first terminals of all the loads are connected by a single bus, and the second terminal of any one load of all the loads is connected with the voltage regulation port of the power supply end;
When the load supply voltage meets the voltage value requirement, the first terminal maintains a preset first level value and monitors an externally input level value; when the load supply voltage does not meet the voltage value requirement, the first terminal outputs a second level value with the polarity opposite to that of the first level value;
when the first terminal receives a second level value transmitted by the single bus communication bus, the second terminal of the first terminal is adjusted to be at the second level value;
the second terminal outputs a first signal when the first terminal of the load is at a first level value; the second terminal outputs a second signal when the first terminal of the load is at a second level value;
the second signal is a power supply voltage boosting signal, and the power supply end controls the power supply source to boost the power supply voltage after receiving the power supply voltage boosting signal.
In one embodiment, the first level value is a weak low level or a weak high level, and the second level value is a high level signal having a polarity opposite to that of the first level value.
In one embodiment, the first signal is a constant level signal, and the second signal is a high-low level signal with a predetermined period.
In one embodiment, after the power supply terminal receives the second signal, the power supply of the power supply terminal gradually increases the power supply voltage by a predetermined step-up amplitude until the signal sent by the second terminal becomes the first signal.
In one embodiment, after the power supply terminal does not receive the second signal within a predetermined time period, the predetermined step-down amplitude decreases the power supply voltage value until the signal sent by the second terminal becomes the second signal.
The invention also provides a voltage regulation method of a multi-load system based on single bus communication, which comprises the following steps:
arranging a first terminal and a second terminal on each load of the load ends, wherein the first terminals and the second terminals of all the loads are connected by a single-wire bus, and the second terminal of the front-stage load is connected with the first terminal of the rear-stage load; the first terminal of the first-stage load is set to be forbidden, and the second terminal of the final-stage load is connected with the voltage regulation port of the power supply end;
the second terminals of all the loads except the final-stage load adjust output signals according to the condition of the self-supply voltage, and when the self-supply voltage meets the requirement, the first signals are output; when the self power supply voltage does not meet the requirement, outputting a second signal; when the first terminal of the load receives the second signal, the second terminal of the current load is adjusted to output the second signal;
the second terminal of the final load is set to output a third signal when the first terminal of the final load receives the second signal or when the power supply voltage of the final load does not meet the requirement; otherwise the voltage status output terminal of the final stage load outputs the fourth signal.
The third signal is a power supply voltage boost signal, and the power supply end controls the power supply source to boost the power supply voltage after receiving the power supply voltage boost signal.
In one embodiment, the first signal is a low level or a high level, and the second signal is a level signal having a polarity opposite to that of the first level value.
In one embodiment, the third signal is a high-low level signal with a predetermined period, and the fourth signal is a constant level signal.
In one embodiment, the power supply terminal, after receiving the third signal, the power supply terminal power supply gradually increases the power supply voltage by a predetermined step-up amplitude until the signal transmitted by the second terminal of the final stage load becomes the fourth signal.
In one embodiment, the predetermined step-down amplitude decreases the value of the supply voltage after the supply terminal has not received the third signal for a predetermined period of time until the signal transmitted by the second terminal of the final load becomes the third signal.
One or more embodiments of the present invention may have the following advantages over the prior art:
the method has the advantages that single bus communication among load modules is increased, only an adjustment request signal needs to be sent among the modules, the adjustment request or the signal is output to a power supply feedback end or a remote control end only by one module after the signal weighting, the number of sensitive signals can be effectively reduced, the wiring of a circuit board is facilitated, meanwhile, the anti-interference performance of a voltage adjustment signal can be effectively improved, the power supply fluctuation is avoided, and the overall efficiency is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic circuit configuration diagram of a voltage regulation method of a multi-load system according to a first embodiment of the present invention;
fig. 2 is a schematic circuit diagram illustrating a voltage regulation method of a multi-load system according to a second embodiment of the present invention;
fig. 3 is a schematic circuit diagram illustrating a voltage regulation method for a multi-load system according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to fig. 1-2.
Example 1
As shown in fig. 1, the voltage regulation method of the multiple load system based on single bus communication in this embodiment includes setting a voltage status terminal STA and a power supply voltage regulation terminal FB on each load at the load end;
When the load power supply voltage meets the requirement of the minimum voltage value, the voltage state terminal STA keeps a preset weak level, and meanwhile, the voltage state terminal STA monitors an externally input level value in real time; the weak level may be a weak low level or a weak high level;
when the load power supply voltage does not meet the requirement of the minimum voltage value, the voltage state terminal STA outputs a high-level signal with polarity opposite to that of the weak level;
the power supply voltage adjusting terminal FB outputs a constant level signal when the load power supply voltage meets the requirement of the lowest voltage value; the power supply voltage adjusting terminal FB outputs a power supply voltage boosting signal, namely a high-low level signal of a preset period when the load power supply voltage does not meet the requirement of the minimum voltage value;
all voltage state terminals STA of a plurality of loads are connected in series by a single-wire bus, and a power supply voltage adjusting terminal FB of any load of the plurality of loads is connected with a power supply feedback interface of a power supply end;
and the power supply of the power supply end adjusts the power supply voltage according to the high-low level signal transmitted by the power supply voltage adjusting terminal FB.
In this embodiment, except for the load corresponding to the power supply end power feedback interface, the power supply voltage adjustment terminals FB of other loads are set to the disabled state.
In this embodiment, a voltage control module is further provided, and the voltage control module adjusts the voltage or the current of the power supply voltage adjustment terminal FB connected to the power supply feedback interface of the power supply terminal at a predetermined step value according to a certain time interval, so as to achieve the purpose of reducing the power supply voltage of the power supply.
When the adjusted power supply voltage meets the power supply voltage requirement of each load module, the voltage state terminal STA of each load still keeps a preset weak level, and the power supply voltage adjusting terminal FB keeps the adjusted voltage value.
When the adjusted power supply voltage still does not meet the power supply voltage requirement of any load, the voltage state terminal STA of the load still outputs a high level signal with the polarity opposite to that of the weak level, and is detected by the voltage state terminals STA of all other loads connected to the single-wire bus in the system, wherein the power supply voltage adjusting terminal FB connected with the power supply feedback interface of the power supply end continuously outputs high and low level signals with a preset period; until the supply voltage meets all the module requirements.
The system always keeps closed-loop control over the power supply voltage, the voltage is always controlled to be close to a required value, and the overall efficiency is improved.
Example 2
As shown in fig. 2, the voltage regulation method of the multiple load system based on single bus communication in this embodiment includes that each load at the load end is provided with a voltage status input terminal and a voltage status output terminal, the voltage status input terminals and the voltage status output terminals of all the loads are connected by a single wire bus, and the voltage status output terminal of the former load is connected with the voltage status input terminal of the latter load;
the voltage state input terminal of the first stage load is set to a disabled state;
the voltage state output terminals of all loads except the final-stage load adjust output signals according to the condition of self power supply voltage, and when the self power supply voltage meets the requirement, a first signal is output; when the self power supply voltage does not meet the requirement, outputting a second signal; when the voltage state input terminal of the load receives the second signal, the voltage state output terminal of the current load is adjusted to output the second signal;
the voltage state output terminal of the final-stage load is set to output a power supply voltage boosting signal, namely a high-low level signal with a preset period when the voltage state input terminal of the final-stage load receives a second signal or the voltage state output terminal of the final-stage load does not meet the requirement when the power supply voltage of the final-stage load per se does not meet the requirement; otherwise, the voltage state output terminal of the final stage load outputs a constant level signal.
After the power supply of the power supply end receives a power supply voltage boosting signal sent by the final-stage load, the power supply of the power supply end gradually boosts the power supply voltage with a preset boosting amplitude until the signal sent by the final-stage load becomes a constant level signal.
When the final stage load does not send out a voltage raising request within a preset time period, the power supply voltage value is gradually reduced according to a set speed until the final stage load sends out the voltage raising request, and the reduction of the power supply voltage value is stopped.
Example 3
As shown in fig. 3, the voltage regulation method for a multi-load system based on single bus communication in this embodiment includes that each load at a load end is provided with a voltage status input terminal and a voltage status output terminal, all loads at the load end are divided into multiple stages, and each stage is provided with at least one load; the voltage state output terminal of each front-stage load is connected with the voltage state input terminal of the rear-stage load;
the voltage state input terminal of the load without the input of the preceding stage load voltage state signal is set to be in a forbidden state;
the voltage state output terminals of all loads except the final-stage load adjust output signals according to the condition of self power supply voltage, and when the self power supply voltage meets the requirement, a first signal is output; when the self power supply voltage does not meet the requirement, outputting a second signal; when the voltage state input terminal of the load receives the second signal, the voltage state output terminal of the current load is adjusted to output the second signal;
The voltage state output terminal of the final stage load is set to output a power supply voltage boosting signal, namely a high-low level signal with a preset period when the voltage state input terminal of the final stage load receives a second signal or the voltage state output terminal of the final stage load does not meet the requirement when the power supply voltage of the final stage load meets the requirement; otherwise, the voltage state output terminal of the final stage load outputs a constant level signal.
After the power supply of the power supply end receives a power supply voltage boosting signal sent by the final-stage load, the power supply of the power supply end gradually boosts the power supply voltage with a preset boosting amplitude until the signal sent by the final-stage load becomes a constant level signal.
When the final stage load does not send out a voltage raising request within a preset time period, the power supply voltage value is gradually reduced according to a set speed until the final stage load sends out the voltage raising request, and the reduction of the power supply voltage value is stopped.
The above description is only an embodiment of the present invention, and the scope of the present invention is not limited thereto, and any modification or replacement within the technical specifications of the present invention by those skilled in the art should be within the scope of the present invention.
Claims (11)
1. A voltage regulation method of a multi-load system based on single bus communication is characterized by comprising the following steps:
arranging a first terminal and a second terminal on each load of the load ends, wherein the first terminals of all the loads are connected by a single bus, and the second terminal of any one load of all the loads is connected with the voltage regulation port of the power supply end;
when the load supply voltage meets the voltage value requirement, the first terminal maintains a preset first level value and monitors an externally input level value; when the load supply voltage does not meet the voltage value requirement, the first terminal outputs a second level value with the polarity opposite to that of the first level value;
when the first terminal receives a second level value transmitted by the single bus communication bus, the second terminal of the first terminal is adjusted to be at the second level value;
the second terminal outputs a first signal when the first terminal of the load is at a first level value; the second terminal outputs a second signal when the first terminal of the load is at a second level value;
the second signal is a power supply voltage boosting signal, and the power supply end controls the power supply source to boost the power supply voltage after receiving the power supply voltage boosting signal.
2. The voltage regulation method of the multi-load system according to claim 1, wherein the first level value is a weak low level or a weak high level, and the second level value is a high level signal having a polarity opposite to that of the first level value.
3. The voltage regulation method of claim 1, wherein the first signal is a constant level signal, and the second signal is a high-low level signal with a predetermined period.
4. The voltage regulation method of the multi-load system according to claim 1, wherein after the power supply terminal receives the second signal, the power supply terminal power supply gradually increases the power supply voltage by a predetermined step-up amplitude until the signal transmitted by the second terminal becomes the first signal.
5. The voltage regulation method of claim 1, wherein when the power supply terminal does not receive the second signal for a predetermined period of time, the predetermined step-down amplitude decreases the value of the power supply voltage until the signal transmitted from the second terminal becomes the second signal.
6. A voltage regulation method of a multi-load system based on single bus communication is characterized by comprising the following steps:
Arranging a first terminal and a second terminal on each load of the load ends, wherein the first terminals and the second terminals of all the loads are connected by a single-wire bus, and the second terminal of the front-stage load is connected with the first terminal of the rear-stage load; the first terminal of the first-stage load is set to be forbidden, and the second terminal of the final-stage load is connected with the voltage regulation port of the power supply end;
the second terminals of all the loads except the final-stage load adjust output signals according to the condition of self power supply voltage, and when the self power supply voltage meets the requirement, a first signal is output; when the self power supply voltage does not meet the requirement, outputting a second signal; when the first terminal of the load receives the second signal, the second terminal of the current load is adjusted to output the second signal;
the second terminal of the final stage load is set to output a third signal when the first terminal of the final stage load receives the second signal or the final stage load does not meet the requirement of the self power supply voltage; otherwise the voltage status output terminal of the final stage load outputs the fourth signal.
The third signal is a power supply voltage boost signal, and the power supply end controls the power supply source to boost the power supply voltage after receiving the power supply voltage boost signal.
7. The method of claim 6, wherein the first signal is at a low level or at a high level, and the second signal is at a level opposite in polarity to the first level.
8. The method of claim 6, wherein the third signal is a high/low level signal with a predetermined period, and the fourth signal is a constant level signal.
9. The voltage regulation method of the multi-load system according to claim 6, wherein the power supply terminal power supply gradually increases the power supply voltage by a predetermined step-up amplitude after receiving the third signal until the signal transmitted from the second terminal of the final stage load becomes the fourth signal.
10. The method of claim 6, wherein the predetermined step-down magnitude decreases the value of the power supply voltage until the signal transmitted from the second terminal of the final stage load becomes the third signal after the third signal is not received by the power supply terminal for a predetermined period of time.
11. A voltage regulation method of a multi-load system based on single bus communication is characterized by comprising the following steps:
Arranging a first terminal and a second terminal on each load of a load end, wherein all loads of the load end are divided into multiple stages, and each stage is provided with at least one load; the voltage state output terminal of each front-stage load is connected with the voltage state input terminal of the rear-stage load;
the voltage state input terminal of the load without the input of the preceding stage load voltage state signal is set to be in a forbidden state;
the second terminal of the final load is connected with the voltage regulating port of the power supply end;
the second terminals of all the loads except the final-stage load adjust output signals according to the condition of the self-supply voltage, and when the self-supply voltage meets the requirement, the first signals are output; when the self power supply voltage does not meet the requirement, outputting a second signal; when the first terminal of the load receives the second signal, the second terminal of the current load is adjusted to output the second signal;
the second terminal of the final load is set to output a third signal when the first terminal of the final load receives the second signal or when the power supply voltage of the final load does not meet the requirement; otherwise the voltage status output terminal of the final stage load outputs the fourth signal.
The third signal is a power supply voltage boosting signal, and the power supply end controls the power supply source to boost the power supply voltage after receiving the power supply voltage boosting signal.
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