CN108306490A - Power supply output control circuit and method - Google Patents
Power supply output control circuit and method Download PDFInfo
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- CN108306490A CN108306490A CN201710022575.7A CN201710022575A CN108306490A CN 108306490 A CN108306490 A CN 108306490A CN 201710022575 A CN201710022575 A CN 201710022575A CN 108306490 A CN108306490 A CN 108306490A
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- power supply
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- way power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/096—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the power supply of the control circuit being connected in parallel to the main switching element
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- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention provides a kind of power supply output control circuit and methods, wherein the circuit includes：At least two-way power supply, electronic load, flows unit at counnter attack unit, wherein, at least the output plus terminal of two-way power supply is connected to the anode of electronic load by counnter attack unit respectively, and the output negative terminal of at least two-way power supply is connected to the negative terminal of electronic load by flowing unit respectively；Counnter attack unit, for preventing due to the output that is arbitrary reversed all the way or influencing other road power supplys without output at least two-way power supply；Unit is flowed, for passing through the resistance with positive temperature coefficient, the output current of adjustment at least two-way power supply, so that the output current of at least two-way power supply is equal respectively.Through the invention, solve in the related technology for itself without and the power supply of machine flow equalizing function carry out the scheme of output-parallel band load, bearing power cannot be made full use of by existing, the problem of easily causing waste, reached and made full use of bearing power, reduced the effect of cost.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of power supply output control circuit and method.
Background technology
Currently, carrying scheme for parallel current-sharing band, a kind of scheme is that Switching Power Supply itself is needed to have flow equalizing function, power supply production
It participates in adjusting inside product.The power supply for not having flow equalizing function for itself can not directly carry out parallel current-sharing.
Power supply product such as nothing itself and machine flow equalizing function, cannot directly carry output-parallel band.Per road, output needs list
Only resistance or electronic load (as shown in Figure 1) all the way.Test (especially aging is carried carrying out band for a long time to more power supply products
Test) when, it needs using more loads.Electronic load power is big, and power supply product power is smaller, fails to make full use of bearing power
Also result in waste.
Therefore, the scheme of output-parallel band load is carried out without the power supply of simultaneously machine flow equalizing function for itself in the related technology,
The problem of in the presence of that cannot make full use of bearing power, easily cause waste.
Invention content
An embodiment of the present invention provides a kind of power supply output control circuit and method, at least solve in the related technology for
Itself carries out the scheme of output-parallel band load without the power supply of simultaneously machine flow equalizing function, and bearing power cannot be made full use of by existing, easily
Wasting problem.
According to one embodiment of present invention, a kind of power supply output control circuit is provided, including：At least two-way power supply,
Electronic load, flows unit at counnter attack unit, wherein the output plus terminal of at least two-way power supply passes through the counnter attack list respectively
Member is connected to the anode of the electronic load, and the output negative terminal of at least two-way power supply passes through the stream unit connection respectively
To the negative terminal of the electronic load；The counnter attack unit, for preventing due to arbitrarily connecing all the way in at least two-way power supply
Output anti-or that other road power supplys are influenced without output；It is described to flow unit, for respectively by with positive temperature coefficient
Resistance, the output current of at least two-way power supply described in adjustment, so that the output current of at least two-way power supply is equal.
Optionally, the counnter attack unit is diode, wherein is had between the diode and at least two-way power supply
The anode of one-to-one relationship, the diode is connected to the output plus terminal of corresponding power, and the cathode of the diode is connected to
The anode of the electronic load.
Optionally, the corresponding multiple diodes of at least two-way power supply are assemblied on a heat sink.
Optionally, the counnter attack unit is metal-oxide-semiconductor, wherein has one between the metal-oxide-semiconductor and at least two-way power supply
One correspondence, the drain electrode of the metal-oxide-semiconductor are connected to the output plus terminal of corresponding power, and the source electrode of the metal-oxide-semiconductor is connected to described
The anode of electronic load.
Optionally, the stream unit is flow equalizing circuit, is had between the flow equalizing circuit and at least two-way power supply
One-to-one relationship, wherein the flow equalizing circuit includes：Switching tube, the resistance, comparator, wherein the leakage of the switching tube
Pole is connected to the negative terminal of the electronic load, and the output that the source electrode of the switching tube is connected to corresponding power by the resistance is negative
End；The comparator is used for current potential and preset reference current potential according to the source electrode of the switching tube, controls the switching tube
Break-make.
According to another embodiment of the invention, a kind of power output control method is provided, including：Pass through counnter attack unit
Anti- inverse processing is carried out to the output of the arbitrary power supply all the way at least two-way power supply, wherein the counnter attack unit for prevent by
Output arbitrary reversed all the way or that other road power supplys are influenced without output in at least two-way power supply, at least two-way
The output plus terminal of power supply is connected to the anode of electronic load, the output of at least two-way power supply by the counnter attack unit respectively
Negative terminal is connected to the negative terminal of the electronic load by flowing unit respectively；There is positive temperature system by described flow in unit
Several resistance, the output current of at least two-way power supply described in adjustment, so that the output current of at least two-way power supply is equal.
Optionally, by the counnter attack unit to the arbitrary power supply all the way in at least two-way power supply it is described export into
The anti-inverse processing of row includes：The output of arbitrary power supply all the way in at least two-way power supply is carried out by diode at counnter attack
Reason, wherein the anode of the diode is connected to the output plus terminal of corresponding power, and the cathode of the diode is connected to the electricity
The anode of son load.
Optionally, in the output by the counnter attack unit to the arbitrary power supply all the way in at least two-way power supply
During carrying out anti-inverse processing, further include：By heat sink to the corresponding multiple diodes of at least two-way power supply
Carry out radiating treatment.
Optionally, by the counnter attack unit to the arbitrary power supply all the way in at least two-way power supply it is described export into
The anti-inverse processing of row includes：The output of arbitrary power supply all the way in at least two-way power supply is carried out by metal-oxide-semiconductor at counnter attack
Reason, wherein the drain electrode of the metal-oxide-semiconductor is connected to the output plus terminal of corresponding power, and the source electrode of the metal-oxide-semiconductor is connected to the electronics
The anode of load.
Optionally, the resistance in unit with positive temperature coefficient is flowed by described, at least two-way described in adjustment
The output current of power supply includes：Respectively according to the voltage value and preset voltage value at the resistance both ends, generate for described equal
The switching tube for flowing unit carries out the control signal of current limliting, wherein the drain electrode of the switching tube is connected to the negative of the electronic load
End, the source electrode of the switching tube are connected to the output negative terminal of corresponding power by the resistance；The switching tube is according to the control
Signal processed carries out current limliting.
According to still another embodiment of the invention, a kind of storage medium is additionally provided.The storage medium is set as storage and uses
In the program code for executing following steps：The output of the arbitrary power supply all the way at least two-way power supply is carried out by counnter attack unit
Anti- inverse processing, wherein the counnter attack unit is used to prevent due to arbitrary reversed all the way in at least two-way power supply or without defeated
Go out and influence the output of other road power supplys, the output plus terminal of at least two-way power supply is connected to by the counnter attack unit respectively
The output negative terminal of the anode of electronic load, at least two-way power supply is connected to the electronic load by flowing unit respectively
Negative terminal；The resistance in unit with positive temperature coefficient is flowed by described, at least output current of two-way power supply described in adjustment,
So that the output current of at least two-way power supply is equal.
Optionally, storage medium is also configured to store the program code for executing following steps：Pass through the counnter attack list
Member carries out anti-inverse processing to the arbitrary output of power supply all the way in at least two-way power supply：At least two-way electricity
The output of arbitrary power supply all the way in source carries out anti-inverse processing by diode, wherein the anode of the diode connects
To the output plus terminal of corresponding power, the cathode of the diode is connected to the anode of the electronic load.
Optionally, storage medium is also configured to store the program code for executing following steps：Passing through the counnter attack
During unit carries out anti-inverse processing to the output of the arbitrary power supply all the way in at least two-way power supply, further include：
Radiating treatment is carried out by heat sink multiple diodes corresponding at least two-way power supply.
Optionally, storage medium is also configured to store the program code for executing following steps：Pass through the counnter attack list
Member carries out anti-inverse processing to the arbitrary output of power supply all the way in at least two-way power supply：At least two-way electricity
The output of arbitrary power supply all the way in source carries out anti-inverse processing by metal-oxide-semiconductor, wherein the drain electrode of the metal-oxide-semiconductor is connected to
The output plus terminal of corresponding power, the source electrode of the metal-oxide-semiconductor are connected to the anode of the electronic load.
Optionally, storage medium is also configured to store the program code for executing following steps：It is single by the stream
There is the resistance of positive temperature coefficient, the output current of at least two-way power supply described in adjustment includes in member：Respectively according to institute
The voltage value and preset voltage value at resistance both ends are stated, the control letter for carrying out current limliting for the switching tube to the stream unit is generated
Number, wherein the drain electrode of the switching tube is connected to the negative terminal of the electronic load, and the source electrode of the switching tube passes through the resistance
It is connected to the output negative terminal of corresponding power；The switching tube carries out current limliting according to the control signal.
Through the invention, it is carried out using the power supply (e.g., Switching Power Supply) that Single Electron is loaded to multiple no flow equalizing functions defeated
Go out and associated load, and equal stream process is carried out to the output current of each road power supply by the resistance with positive temperature coefficient, it can be with
The power of the electronic load is made full use of, and device forms simply less, therefore, can solve in the related technology not having itself
And the power supply of machine flow equalizing function carries out the scheme of output-parallel band load, bearing power cannot be made full use of by existing, and easily cause waste
The problem of, reach and make full use of bearing power, reduces the effect of cost.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram that the power supply without flow equalizing function carries out parallel current-sharing band load in the related technology；
Fig. 2 is the schematic diagram of power supply output control circuit according to the ... of the embodiment of the present invention；
Fig. 3 is the schematic diagram of a scenario that multiple same power supplies according to the preferred embodiment of the invention share an electronic load；
Fig. 4 is the structural schematic diagram of power supply output control circuit according to the preferred embodiment of the invention；
Fig. 5 is the principle schematic of power supply output control circuit according to the preferred embodiment of the invention；
Fig. 6 is the circuit diagram for the power supply output control circuit that counnter attack unit according to the preferred embodiment of the invention is metal-oxide-semiconductor；
Fig. 7 is the power supply output control circuit according to the preferred embodiment of the invention flowed by the realization of positive temperature coefficient resistance
Circuit diagram；
Fig. 8 is the flow chart of power output control method according to the ... of the embodiment of the present invention.
Specific implementation mode
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.
Embodiment 1
A kind of power supply output control circuit is provided in the present embodiment, and Fig. 2 is that power supply according to the ... of the embodiment of the present invention is defeated
Go out the schematic diagram of control circuit, as shown in Fig. 2, the power supply output control circuit 20 includes：At least two-way power supply 22, electronic load
24, counnter attack unit 26, stream unit 28, wherein
At least the output plus terminal of two-way power supply 22 is connected to the anode of electronic load 24 by counnter attack unit 26 respectively, at least
The output negative terminal of two-way power supply 22 is connected to the negative terminal of electronic load 24 by flowing unit 28 respectively；
Counnter attack unit 26, for preventing due to arbitrary reversed all the way at least two-way power supply 22 or influencing it without output
The output of his road power supply；
Flow unit 28, for respectively by the resistance with positive temperature coefficient, adjustment at least two-way power supply 22 it is defeated
Go out electric current, so that the output current of at least two-way power supply 22 is equal.
By foregoing circuit, output-parallel band load is carried out using the power supply that Single Electron is loaded to multiple no flow equalizing functions,
And equal stream process is carried out to the output current of each road power supply by the resistance with positive temperature coefficient, it solves in the related technology
The scheme of output-parallel band load is carried out without the power supply of simultaneously machine flow equalizing function for itself, load work(cannot be made full use of by existing
Rate, takes full advantage of bearing power, reduces cost the problem of easily causing waste.
Optionally, counnter attack unit 26 can be by diversified forms, for example, diode, metal-oxide-semiconductor (Metal Oxide
Semiconductor, metal oxide semiconductor field effect tube), wherein diode (or metal-oxide-semiconductor) and at least two-way power supply 22
Between have one-to-one relationship, that is, a diode (or metal-oxide-semiconductor) is corresponded to per road power supply.Wherein, it is for counnter attack unit 26
The anode of the case where diode, diode are connected to the output plus terminal of corresponding power, and cathode is connected to the anode of electronic load 24.
To reduce diode forward pressure drop shrinkage temperature difference, diode can be assembled to be radiated on same module radiator and (also may be used
To be assemblied on different heat sinks, how selection as needed assembles).The case where being metal-oxide-semiconductor for counnter attack unit 26, metal-oxide-semiconductor
Drain electrode be connected to the output plus terminal of corresponding power, the source electrode of metal-oxide-semiconductor is connected to the anode of electronic load 24.
Optionally, big for product load current, more demanding situation is flowed, it may include equal galvanic electricity to flow unit 28
Road has one-to-one relationship between flow equalizing circuit and at least two-way power supply 22, i.e., power supply corresponds to a flow equalizing circuit all the way.Often
It, can also be including switching tube (for example, MOS other than including the above-mentioned resistance with positive temperature coefficient in a flow equalizing circuit
Pipe) and comparator, wherein the drain electrode of switching tube is connected to the negative terminal of electronic load 24, and the source electrode of switching tube is connected by resistance
To the output negative terminal of corresponding power；Comparator is used for current potential and preset reference current potential according to the source electrode of switching tube, control switch
The break-make of pipe.In this way, resistance can detect every road electric power outputting current, output voltage not quite identical by electric power output voltage
High electric current is larger, and resistance drop is also larger, and when resistance drop is equal to preset reference current potential, comparator controls switching tube current limliting.
Ratio of the constant output current in preset reference current potential and resistance.Power supply exports slightly lower electric power outputting current and increases, most
Each output current is carried close to the equal stream band that reaches eventually.
It is the control process of power supply output control circuit based on above-described embodiment and optional embodiment, it is preferred real at this
It applies in example, provides a kind of power supply output control circuit, the control circuit is illustrated below.
Fig. 3 is the schematic diagram of a scenario that multiple same power supplies according to the preferred embodiment of the invention share an electronic load,
Fig. 4 is the structural schematic diagram of power supply output control circuit according to the preferred embodiment of the invention.As shown in Figure 3 and Figure 4, Duo Ge electricity
Product-derived shares same Electronic Negative by parallel current-sharing plate (may include counnter attack unit 42 shown in Fig. 4 and flow unit 46)
It carries, counnter attack unit 42 and stream unit 46 are attached by power interface and multiple-output electric power, by loading interfaces and more
Road out-put supply is attached.
Fig. 5 is the principle schematic of power supply output control circuit according to the preferred embodiment of the invention, as shown in figure 5, should
Power supply output control circuit includes：Anti-reverse diode D1, D2 ... Dn (effect is similar with aforementioned diodes)；Current detecting electricity
Resistance R1, R2 ... Rn (effect has the positive resistance of temperature coefficient similar with aforementioned), which is used as simultaneously flows
Impedance；Current constant control switching tube Q1, Q2 ... Qn (effect and aforementioned switches tubing are seemingly) and comparator X1, X2 ... Xn, wherein phase
Each component (each anti-reverse diode, each current sense resistor, each current constant control switching tube and each comparator) of same type
Structure and relevant parameter (resistance value of such as resistance) it is identical.
Diode connecting valve power supply export, for prevent power supply product reversed or in which some power supply without output influence its
Its power supply exports, wherein diode anode is connect per the direct current output of way switch power supply, each road diode cathode links together,
Connect 44 anode of electronic load.It is influenced by temperature difference to reduce diode forward pressure drop, diode can be assemblied in same and dissipate
It radiates on hot device.If electric current is larger, diode can be changed to metal-oxide-semiconductor, and (as shown in Figure 6) is realized with ORING circuits.
Electronic load 44 connects the drain electrode of switching tube Q1, Q2 ... Qn, and switching tube source electrode meets current sense resistor R1, R2 ...
Rn eventually passes back to Switching Power Supply by current sense resistor and exports negative terminal.
Comparator output control switch pipe break-make reaches constant current per way switch power supply output.Comparator output plus terminal connects ginseng
Voltage Vref (effect is similar with aforementioned preset reference current potential) is examined, input negative terminal connects detection resistance voltage.
Current sense resistor is for detecting every road electric power outputting current.Electric power output voltage is not quite identical, output voltage
High electric current is larger, and resistance drop Ur=IR is also larger, and (R is the resistance value size of each current sense resistor, and I is to flow through current detecting
The electric current of resistance), as Ur=Vref, comparator controls switching tube current limliting.Current sense resistor is positive temperature coefficient, and electric current is big
Resistance become larger with temperature rise, busbar (load end) voltage and power supply product output voltage are constant, the output of road power supply
Electric current can become smaller；Originally the divided electric current of the lower power supply of output voltage increases.Constant output current in In=Vref/Rn, n=1,
2,3 ....Final each output current reaches stream band load close to equal.
Per road output current size In=Vref/Rn, size of current can be changed by adjusting Vref.Load current is the roads n
The sum of output current.
If fruit product load current is small, flow of less demanding, flowing unit 46, can only to pass through positive temperature coefficient resistor real
Existing (as shown in Figure 7).
The above-mentioned technical proposal of preferred embodiment through the invention, practical by simple, reliable circuit device is realized single
A high power load carries test or aging to the Switching Power Supply band of multiple no flow equalizing functions.Compared with prior art, device lacks group
At simple, lower cost achievees the purpose that multi-product output-parallel band carries.
Embodiment 2
A kind of power output control method is additionally provided in the present embodiment, and this method can be run in above-described embodiment
Power supply output control circuit in.Fig. 8 is the flow chart of power output control method according to the ... of the embodiment of the present invention, such as Fig. 8 institutes
Show, which includes the following steps：
Step S802 carries out at counnter attack the output of the arbitrary power supply all the way at least two-way power supply by counnter attack unit
Reason, wherein counnter attack unit is used to prevent due to arbitrary reversed all the way at least two-way power supply or influences other roads without output
The output of power supply, at least output plus terminal of two-way power supply are connected to the anode of electronic load by counnter attack unit respectively, and at least two
The output negative terminal of road power supply is connected to the negative terminal of electronic load by flowing unit respectively；
Step S804 has the resistance of positive temperature coefficient, the output of adjustment at least two-way power supply by flowing in unit
Electric current, so that the output current of at least two-way power supply is equal.
Optionally, step S802 may include：The output of arbitrary power supply all the way at least in two-way power supply passes through diode
Carry out anti-inverse processing, wherein the anode of diode is connected to the output plus terminal of corresponding power, and the cathode of diode is connected to electronics
The anode of load.Can also include：The output of arbitrary power supply all the way at least in two-way power supply is carried out by metal-oxide-semiconductor at counnter attack
Reason, wherein the drain electrode of metal-oxide-semiconductor is connected to the output plus terminal of corresponding power, and the source electrode of metal-oxide-semiconductor is connected to the anode of electronic load.
It optionally, can be by heat sink to the corresponding multiple diodes of at least two-way power supply during step S802
Carry out radiating treatment.
Ground can be continued, step S804 may include：Respectively according to the voltage value and preset voltage value at resistance both ends, generation is used for
Switching tube to flowing unit carries out the control signal of current limliting, wherein the drain electrode of switching tube is connected to the negative terminal of electronic load, opens
The source electrode for closing pipe is connected to the output negative terminal of corresponding power by resistance；Switching tube carries out current limliting according to control signal.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation
The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but it is very much
In the case of the former be more preferably embodiment.Based on this understanding, technical scheme of the present invention is substantially in other words to existing
The part that technology contributes can be expressed in the form of software products, which is stored in a storage
In medium (such as ROM/RAM, magnetic disc, CD), including some instructions are used so that a station terminal equipment (can be mobile phone, calculate
Machine, server or network equipment etc.) execute method described in each embodiment of the present invention.
Embodiment 3
The embodiments of the present invention also provide a kind of storage mediums.Optionally, in the present embodiment, above-mentioned storage medium can
To be arranged to store the program code for executing following steps：
S1 carries out anti-inverse processing by counnter attack unit to the output of the arbitrary power supply all the way at least two-way power supply, wherein
Counnter attack unit is used to prevent due to arbitrary reversed all the way at least two-way power supply or influences the defeated of other road power supplys without output
Go out, at least output plus terminal of two-way power supply is connected to the anode of electronic load by counnter attack unit respectively, at least two-way power supply
Output negative terminal is connected to the negative terminal of electronic load by flowing unit respectively；
S2 has the resistance of positive temperature coefficient by flowing, adjusts the output current of at least two-way power supply in unit, with
Keep the output current of at least two-way power supply equal.
Optionally, storage medium is also configured to store the program code for executing following steps：Pass through counnter attack unit
Carrying out anti-inverse processing to the arbitrary output of power supply all the way at least two-way power supply includes：At least in two-way power supply it is arbitrary all the way
The output of power supply carries out anti-inverse processing by diode, wherein and the anode of diode is connected to the output plus terminal of corresponding power, and two
The cathode of pole pipe is connected to the anode of electronic load.
Optionally, storage medium is also configured to store the program code for executing following steps：Passing through counnter attack list
During member carries out anti-inverse processing to the output of the arbitrary power supply all the way at least two-way power supply, further include：Pass through heat sink
Multiple diodes corresponding at least two-way power supply carry out radiating treatment.
Optionally, storage medium is also configured to store the program code for executing following steps：Pass through counnter attack unit
Carrying out anti-inverse processing to the arbitrary output of power supply all the way at least two-way power supply includes：At least in two-way power supply it is arbitrary all the way
The output of power supply carries out anti-inverse processing by metal-oxide-semiconductor, wherein the drain electrode of metal-oxide-semiconductor is connected to the output plus terminal of corresponding power, MOS
The source electrode of pipe is connected to the anode of electronic load.
Optionally, storage medium is also configured to store the program code for executing following steps：
By flowing the resistance with positive temperature coefficient in unit, the output current of adjustment at least two-way power supply includes：
S1, respectively according to the voltage value and preset voltage value at resistance both ends, generate for flow the switching tube of unit into
The control signal of row current limliting, wherein the drain electrode of switching tube is connected to the negative terminal of electronic load, and the source electrode of switching tube is connected by resistance
It is connected to the output negative terminal of corresponding power；
S2, switching tube carry out current limliting according to control signal.
Optionally, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only memory (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or
The various media that can store program code such as CD.
Optionally, in the present embodiment, processor is executed according to stored program code in storage medium：Pass through counnter attack
Unit carries out anti-inverse processing to the output of the arbitrary power supply all the way at least two-way power supply, wherein counnter attack unit for prevent by
Output arbitrary reversed all the way or that other road power supplys are influenced without output at least two-way power supply, at least two-way power supply is defeated
Go out the anode that anode is connected to electronic load by counnter attack unit respectively, at least the output negative terminal of two-way power supply is respectively by flowing
Unit is connected to the negative terminal of electronic load；There is by flowing in unit the resistance of positive temperature coefficient, adjustment at least two-way electricity
The output current in source, so that the output current of at least two-way power supply is equal.
Optionally, in the present embodiment, processor is executed according to stored program code in storage medium：Pass through counnter attack
Unit carries out anti-inverse processing to the arbitrary output of power supply all the way at least two-way power supply：It is at least arbitrary in two-way power supply
The output of power supply carries out anti-inverse processing by diode all the way, wherein the anode of diode is being connected to the output of corresponding power just
End, the cathode of diode are connected to the anode of electronic load.
Optionally, in the present embodiment, processor is executed according to stored program code in storage medium：By anti-
During anti-unit carries out anti-inverse processing to the output of the arbitrary power supply all the way at least two-way power supply, further include：By dissipating
Hot plate multiple diodes corresponding at least two-way power supply carry out radiating treatment.
Optionally, in the present embodiment, processor is executed according to stored program code in storage medium：Pass through counnter attack
Unit carries out anti-inverse processing to the arbitrary output of power supply all the way at least two-way power supply：It is at least arbitrary in two-way power supply
The output of power supply carries out anti-inverse processing by metal-oxide-semiconductor all the way, wherein and the drain electrode of metal-oxide-semiconductor is connected to the output plus terminal of corresponding power,
The source electrode of metal-oxide-semiconductor is connected to the anode of electronic load.
Optionally, in the present embodiment, processor is executed according to stored program code in storage medium：By flowing
Resistance with positive temperature coefficient in unit, the output current of adjustment at least two-way power supply include：Respectively according to resistance both ends
Voltage value and preset voltage value, generate for flow unit switching tube carry out current limliting control signal, wherein switching tube
Drain electrode be connected to the negative terminal of electronic load, the source electrode of switching tube is connected to the output negative terminal of corresponding power by resistance；Switch
Pipe carries out current limliting according to control signal.
Optionally, the specific example in the present embodiment can refer to described in above-described embodiment and optional embodiment
Example, details are not described herein for the present embodiment.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be with different from shown in sequence execution herein
The step of going out or describing, either they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of power supply output control circuit, which is characterized in that including：At least two-way power supply, electronic load, counnter attack unit,
Flow unit, wherein
The output plus terminal of at least two-way power supply is connected to the anode of the electronic load, institute by the counnter attack unit respectively
The output negative terminal for stating at least two-way power supply is connected to the negative terminal of the electronic load by the stream unit respectively；
The counnter attack unit, for preventing due to arbitrary reversed all the way in at least two-way power supply or influencing it without output
The output of his road power supply；
It is described to flow unit, for respectively by the resistance with positive temperature coefficient, at least two-way power supply described in adjustment it is defeated
Go out electric current, so that the output current of at least two-way power supply is equal.
2. circuit according to claim 1, which is characterized in that the counnter attack unit is diode, wherein the diode
Has one-to-one relationship between at least two-way power supply, the anode of the diode is being connected to the output of corresponding power just
End, the cathode of the diode are connected to the anode of the electronic load.
3. circuit according to claim 2, which is characterized in that the corresponding multiple diodes of at least two-way power supply
It is assemblied on a heat sink.
4. circuit according to claim 1, which is characterized in that the counnter attack unit be metal-oxide-semiconductor, wherein the metal-oxide-semiconductor with
Having one-to-one relationship between at least two-way power supply, the drain electrode of the metal-oxide-semiconductor is connected to the output plus terminal of corresponding power,
The source electrode of the metal-oxide-semiconductor is connected to the anode of the electronic load.
5. circuit according to any one of claim 1 to 4, which is characterized in that the stream unit is flow equalizing circuit, institute
It states between flow equalizing circuit and at least two-way power supply and has one-to-one relationship, wherein the flow equalizing circuit includes：Switch
Pipe, the resistance, comparator, wherein
The drain electrode of the switching tube is connected to the negative terminal of the electronic load, and the source electrode of the switching tube is connected by the resistance
To the output negative terminal of corresponding power；
The comparator is used for current potential and preset reference current potential according to the source electrode of the switching tube, controls the switch
The break-make of pipe.
6. a kind of power output control method, which is characterized in that including：
Anti- inverse processing is carried out to the output of the arbitrary power supply all the way at least two-way power supply by counnter attack unit, wherein described anti-
Anti- unit is used to prevent due to arbitrary reversed all the way in at least two-way power supply or influences other road power supplys without output
Output, the output plus terminal of at least two-way power supply is connected to the anode of electronic load by the counnter attack unit respectively, described
The output negative terminal of at least two-way power supply is connected to the negative terminal of the electronic load by flowing unit respectively；
The resistance in unit with positive temperature coefficient is flowed by described, at least output current of two-way power supply described in adjustment,
So that the output current of at least two-way power supply is equal.
7. according to the method described in claim 6, it is characterized in that, by the counnter attack unit in at least two-way power supply
The arbitrary output of power supply all the way carry out anti-inverse processing and include：
The output of arbitrary power supply all the way in at least two-way power supply carries out anti-inverse processing by diode, wherein institute
The anode for stating diode is connected to the output plus terminal of corresponding power, and the cathode of the diode is being connected to the electronic load just
End.
8. the method according to the description of claim 7 is characterized in that by the counnter attack unit at least two-way power supply
In arbitrary power supply all the way the output carry out anti-inverse processing during, further include：
Radiating treatment is carried out by heat sink multiple diodes corresponding at least two-way power supply.
9. according to the method described in claim 6, it is characterized in that, by the counnter attack unit in at least two-way power supply
The arbitrary output of power supply all the way carry out anti-inverse processing and include：
The output of arbitrary power supply all the way in at least two-way power supply carries out anti-inverse processing by metal-oxide-semiconductor, wherein described
The drain electrode of metal-oxide-semiconductor is connected to the output plus terminal of corresponding power, and the source electrode of the metal-oxide-semiconductor is connected to the anode of the electronic load.
10. the method according to any one of claim 6 to 9, which is characterized in that have just by described flow in unit
To the resistance of temperature coefficient, the output current of at least two-way power supply described in adjustment includes：
Respectively according to the voltage value and preset voltage value at the resistance both ends, generate for the switching tube to the stream unit into
The control signal of row current limliting, wherein the drain electrode of the switching tube is connected to the negative terminal of the electronic load, the source of the switching tube
Pole is connected to the output negative terminal of corresponding power by the resistance；
The switching tube carries out current limliting according to the control signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710022575.7A CN108306490A (en) | 2017-01-12 | 2017-01-12 | Power supply output control circuit and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710022575.7A CN108306490A (en) | 2017-01-12 | 2017-01-12 | Power supply output control circuit and method |
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| CN108306490A true CN108306490A (en) | 2018-07-20 |
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| CN201710022575.7A Pending CN108306490A (en) | 2017-01-12 | 2017-01-12 | Power supply output control circuit and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109672330A (en) * | 2018-12-20 | 2019-04-23 | 威创集团股份有限公司 | A kind of large power supply PS-ON signal control circuit and large power supply |
| CN110380396A (en) * | 2019-08-19 | 2019-10-25 | 深圳市思榕科技有限公司 | A kind of quick self-adapted counnter attack protection circuit |
| CN114815946A (en) * | 2022-06-24 | 2022-07-29 | 苏州浪潮智能科技有限公司 | Current output equipment, method, device, system and medium |
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Application publication date: 20180720 |