CN109286315A - A kind of intelligent power supply circuit of digital equipment - Google Patents
A kind of intelligent power supply circuit of digital equipment Download PDFInfo
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- CN109286315A CN109286315A CN201811340656.2A CN201811340656A CN109286315A CN 109286315 A CN109286315 A CN 109286315A CN 201811340656 A CN201811340656 A CN 201811340656A CN 109286315 A CN109286315 A CN 109286315A
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- 230000003321 amplification Effects 0.000 claims description 4
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Classifications
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
Abstract
The present invention relates to electronic information technical fields, more particularly to a kind of intelligent power supply circuit of digital equipment, it include: main power source module and equipment power module, equipment power module includes: equipment supply input interface circuit, PWM output and control circuit, adjust detection switch control circuit and adjustable input interface circuit, main power source module includes: system power supply circuit, pwm circuit, intelligent power output electric current measure and compensation circuit, supply voltage multi-channel control and intelligence adjust circuit and equipment power supply output interface circuit, the present invention has the control voltage of automatic identification intelligence, current parameters output, suitable for various different voltages and the equipment of power, the voltage drop loss and deviation that transmission pressure between main power source and equipment generates under electrical equipment different loads electric current can be calibrated by pwm signal automatic synchronization, also The functions such as disturbing pulse damage issuable to equipment are generated when electrical equipment load current being avoided to be mutated.
Description
Technical field
The present invention relates to electronic information technical field more particularly to a kind of intelligent power supply circuits of digital equipment.
Background technique
With the development of science and technology, the electronic product of more and more types has been produced on the market, wherein digital equipment
And it is one such, as the degree of convenience for increasing and its using of the function of digital equipment is promoted, dependency degree of the people to it
Also increasing.
It requires to provide electric energy to it when using electronic product, currently, the use of electronic product requires equipment power supply pair
It is powered.In the prior art, equipment power supply can not achieve automatically according to equipment requirement (Device ID Key) set device power supply
Required voltage, electric current can not achieve the requirement for being widely used in a variety of or even any equipment.In addition, traditional equipment electricity
The voltage setting circuit in source uses adjustable resistance (VR, Variable Resistor), is examined in this way in equipment power unit by VR
It surveys and the voltage for feeding back main power source end has two large deviations, have electricity on the GND line of conducting wire group between a main power source and equipment power supply
Pressure drop, so that GND is not same potential/voltage between main power source and equipment power supply, such equipment power unit is detected and anti-by VR
The voltage for being fed to main power source end is incorrect, and can generate much higher than equipment setting voltage disturbing pulse voltage, two main power sources with
It is external with load current size, conducting wire length, conducting wire thickness material etc. for having voltage drop between equipment power supply on the GND line of conducting wire group
What factor influenced is not fixed value.
For this reason, it is necessary to provide a kind of intelligent power supply circuit of digital equipment to overcome drawbacks described above.
Summary of the invention
The present invention provides a kind of intelligent power supply circuit of digital equipment, control voltage, electricity with automatic identification intelligence
Parameter output is flowed, suitable for various different voltages and the equipment of power, the transmission pressure between main power source and equipment is set in electricity consumption
The voltage drop loss and deviation generated under standby different loads electric current can be calibrated by pwm signal automatic synchronization, also avoid electricity consumption
The functions such as disturbing pulse damage issuable to equipment are generated when apparatus of load current break.
In order to solve the above-mentioned technical problem, the technical solution used in the present invention are as follows:
A kind of intelligent power supply circuit of digital equipment, comprising: main power source module, and set with what the main power source module was connect
Stand-by power source module, the equipment power module include:
Equipment supply input interface circuit is identified for device id；
PWM output and control circuit, connect, the device id for identification with the equipment supply input interface circuit,
And it is instructed according to recognition result generating device supply voltage corresponding relationship；
Detection switch control circuit is adjusted, with the equipment supply input interface circuit, PWM output and control circuit
Connection is controlled for adjustable output electric power detection, load current detection machine equipment for electricity output；And
Adjustable input interface circuit connects to the control circuit, with the main power source module and PWM output for equipment
The supply input of power supply smart input, PWM output and the main power source module；
The main power source module includes:
System power supply circuit, for providing power supply；
Pwm circuit, with the system power supply circuit connection, for pwm signal coupling input and pwm signal ratio enlargement；
Disturbing pulse suppression circuit, and the pwm circuit, the system power supply circuit connection, for avoiding disturbing pulse；
Intelligent power output electric current measure and compensation circuit, with the system power supply circuit, pulse interference suppression electricity
Road connection, for the detection and intelligent compensation to electric current is exported；
Supply voltage multi-channel control and intelligence adjust circuit, with the system power supply circuit, pwm circuit, described dry
It disturbs pulse suppression circuit and the intelligent power output electric current measure is connect with compensation circuit, for adjusting the pwm circuit, institute
State disturbing pulse suppression circuit and the intelligent power output electric current measure and this three roads voltage signal energy direct proportion of compensation circuit
Compensation calibration apparatus of load size variation when, generated on conducting wire between the main power source module and the equipment power module
Voltage drop loss；And
Equipment power supply output interface circuit, connect with the intelligent power output electric current measure with compensation circuit, is used for intelligence
Voltage needed for energy output equipment power supply.
Preferably, the detection switch control circuit that adjusts includes: to export the sampling connected to the control circuit with the PWM
Circuit, the voltage amplifier circuit being connect with the sample circuit, and connect with the sample circuit and the voltage amplifier circuit
Control circuit.
Preferably, the sample circuit includes: to export resistance R4, the capacitor C2 connected to the control circuit, institute with the PWM
State resistance R4 and capacitor C2 be connected in parallel, and the resistance R4 and capacitor C2 be connected in parallel after in the resistance R15 be connected in series,
The resistance R15 is connect with the voltage amplifier circuit；And include: with the PWM output connect to the control circuit resistance R5,
Capacitor C3, the resistance R5 and capacitor C3 are connected in parallel, and the resistance R5 and capacitor C3 be connected in parallel after in the resistance R14
It is connected in series, the resistance R14 is connect with the voltage amplifier circuit and the resistance R15.
Preferably, the pwm circuit includes: optically coupled circuit U9, and the optically coupled circuit U9 input terminal passes through resistance R67
It is connect with the disturbing pulse suppression circuit, one end of the optically coupled circuit U9 output end passes through resistance R68 and the system
Power supply circuit connection, the other end connect amplifying circuit.
Preferably, the amplifying circuit includes: amplifier U8, the resistance R60 connecting with the amplifier normal phase input end,
It is connected in parallel and is grounded with the resistance R60 resistance R57 concatenated and capacitor C29, the resistance R57 and the capacitor C29,
The feedback resistance R20 being connect with the negative input end of the amplifier U8, the diode being connect with the amplifier U8 output end
D16。
Preferably, the disturbing pulse suppression circuit includes: comparator U7, is connected with the non-inverting input terminal of the comparator U7
Diode D15 and resistance R53, the diode D15 and the resistance R53 series connection connect, and the cathode of the diode D15 connects
Ground, connect with the inverting input terminal of the comparator U7 resistance R51 and resistance R45, the resistance R51 and the resistance R45 it
Between be connected in parallel, resistance R45 other end ground connection, the diode D13 being connect with the output end of the comparator U7.
Preferably, the PWM, which is exported with control circuit, includes:
Control unit U1 the device id and generates corresponding transmissions instruction according to recognition result for identification；
Resistance R47, respectively with the NRST pin of described control unit U1 and the system power supply circuit connection；
Capacitor C25, one end is connect with the NRST pin of described control unit U1, the other end is grounded, the resistance R47 and institute
Capacitor C25 is stated to be connected in parallel；
Resistance R40 is connect with the PD1 pin of described control unit U1 and the pwm circuit respectively；
Diode D6, anode is connect with the PD2 pin of control unit U1, cathode is connect with the pwm circuit, the resistance
R40 and the diode D6 are connected in parallel.
Preferably, the intelligent power output electric current measure includes: with compensation circuit
Voltage amplifier circuit adjusts the voltage of circuit transmission for amplifying the supply voltage multi-channel control and intelligence；
Compare amplifying circuit, with disturbing pulse suppression circuit connection, the amplification voltage amplifier circuit for compared with
The voltage of transmission.
Preferably, the voltage amplifier circuit includes:
Resistance R44, for obtaining the proportional voltage drop of apparatus of load electric current；
Amplifier U5, for amplify the voltage drop obtained through the resistance R44 and will amplification voltage transmission to described
Compare amplifying circuit；
The IN+ pin of the amplifier U5 is connect with the resistance R44, OUT output pin amplifying circuit compared with described
Connection, v+ pin and REF the pin amplifying circuit compared with described connect.
Preferably, the relatively amplifying circuit includes: comparator U3, is connect with the non-inverting input terminal of the comparator U3
Resistance R25, resistance R22, the resistance R25 and the resistance R22 are in parallel, connect with the resistance R25 and with the resistance
The resistance R23 of R22 parallel connection, the resistance R28 being connect with the resistance R23 and the voltage amplifier circuit, with the comparator U3
The resistance R38 of reverse input end connection, resistance R34, the resistance R38 and the resistance R34 are in parallel, and the resistance R34 is another
End connects the output end of the comparator U3, and the resistance R38 other end connects the voltage amplifier circuit, and compared with described
The resistance R29 and resistance R24 of device U3 output end connection, are connected in parallel between the resistance R29 and the resistance R24.
A kind of intelligent power supply circuit of digital equipment of the invention is arranged the equipment power module and obtains equipment letter in real time
Breath identifies device id with control circuit by PWM output, and the adjusting detection switch control circuit is defeated according to the PWM
Out with control circuit transmission infomation detection voltage, load current, and then control voltage output, the main power source module according to
The information of the equipment power module transmission, passes through the pwm circuit, the disturbing pulse suppression circuit, the intelligent power
Output electric current measure and compensation circuit will be sent to the supply voltage multi-channel control and intelligence after the Electric signal processing received
Circuit is adjusted, the supply voltage multi-channel control and intelligence adjust the circuit adjusting pwm circuit, the disturbing pulse inhibits electricity
The compensation calibration equipment of this three roads voltage signal energy direct proportion of road and the intelligent power output electric current measure Yu compensation circuit is negative
When carrying size variation, the voltage drop loss generated on conducting wire between the main power source module and the equipment power module is described
Pwm circuit and the system power supply circuit output correspond to pwm signal and corresponding voltage.The present invention has automatic identification intelligence
Voltage, current parameters output are controlled, suitable for various different voltages and the equipment of power, the transmission of electricity between main power source and equipment is led
The voltage drop loss and deviation that line generates under electrical equipment different loads electric current can be calibrated by pwm signal automatic synchronization, also
The functions such as disturbing pulse damage issuable to equipment are generated when electrical equipment load current being avoided to be mutated.
Detailed description of the invention
Fig. 1 is a kind of module frame chart of the intelligent power supply circuit of digital equipment of the present invention.
Fig. 2 is a kind of circuit diagram of the system power supply circuit of the intelligent power supply circuit of digital equipment of the present invention.
Fig. 3 is a kind of circuit diagram of the pwm circuit of the intelligent power supply circuit of digital equipment of the present invention.
Fig. 4 is a kind of circuit diagram of the disturbing pulse suppression circuit of the intelligent power supply circuit of digital equipment of the present invention.
Fig. 5 is the present invention a kind of the intelligent power output electric current measure and compensation circuit of the intelligent power supply circuit of digital equipment
Circuit diagram.
Fig. 6 is that a kind of supply voltage multi-channel control of the intelligent power supply circuit of digital equipment of the present invention and intelligence adjust circuit
Circuit diagram.
Fig. 7 is a kind of circuit diagram of the equipment power supply output interface circuit of intelligent power supply circuit of digital equipment of the present invention.
Fig. 8 is a kind of circuit diagram of the equipment input interface circuit of the intelligent power supply circuit of digital equipment of the present invention.
Fig. 9 is the circuit diagram of the PWM output and control circuit of a kind of intelligent power supply circuit of digital equipment of the present invention.
Figure 10 is a kind of circuit diagram of the adjusting detection switch control circuit of the intelligent power supply circuit of digital equipment of the present invention.
Figure 11 is a kind of circuit diagram of the adjustable input interface circuit of the intelligent power supply circuit of digital equipment of the present invention.
Specific embodiment
With reference to the accompanying drawing, embodiments of the present invention are specifically illustrated, attached drawing is only for reference and illustrates use, does not constitute pair
The limitation of the invention patent protection scope.
Please refer to Fig. 1 to Figure 11, a kind of intelligent power supply circuit of digital equipment of the invention, comprising: main power source module 1,
And the equipment power module 2 being connect with the main power source module 1.
Wherein, the equipment power module 2 includes: equipment supply input interface circuit 21, PWM output and control circuit
22, it adjusts detection switch control circuit 23 and adjustable input interface circuit 24, the equipment supply input interface circuit 21 is used for
Device id identification, connect by the equipment supply input interface circuit 21 with equipment, PWM output and control circuit 22 and
The equipment connects for electricity output circuit 21, the device id for identification, and according to recognition result generating device supply voltage
Corresponding relationship instruction, the adjusting detection switch control circuit 23 and the equipment supply input interface circuit 21, the PWM are defeated
Connect out with control circuit 22, for adjustable output electric power detection, load current detection machine equipment for electricity output control, it is described can
Input interface circuit 24 is adjusted to connect with the main power source module 1, PWM output with control circuit 22, for equipment power supply intelligence
It can input, PWM is exported and the supply input of the main power source module 1.Specifically, the equipment supply input interface circuit 21 is used
In connecting digital equipment for user, with obtain the digital equipment data information and transmission telecommunications number to the digital equipment, institute
Stating PWM output and control circuit 22 includes: the device id and according to recognition result generation corresponding transmission instruction for identification
Control unit U1, the resistance R47 being connect respectively with the NRST pin of described control unit U1 and the main power source module 1, one
The capacitor C25 that end connect with the NRST pin of described control unit U1, the other end ground connection and be connected in parallel with the resistance R47,
The resistance R40 being connect respectively with the PD1 pin of described control unit U1 and pwm circuit 12, and the PD2 of anode and control unit U1
Pin connection, cathode connect with the pwm circuit 12 and and the resistance R40 diode D6, the PWM that are connected in parallel it is defeated
Out with the device id, such as device level, resistance, digital coding for identification of control circuit 22, and according to the device id
Output and the pwm signal of the corresponding ratio of equipment supply voltage, through the equipment power supply output interface circuit 16 pwm signal is passed
It transports in the main power source module 1, the adjusting detection switch control circuit 23 includes: and PWM output and control circuit
22 connection sample circuits, the voltage amplifier circuit being connect with the sample circuit, and with the sample circuit and the voltage
The control circuit of amplifying circuit connection, the sample circuit include: to export the resistance connecting with control circuit 22 with the PWM
R4, capacitor C2, the resistance R4 and capacitor C2 are connected in parallel, and the resistance R4 and capacitor C2 be connected in parallel after in the resistance
R15 is connected in series, and the resistance R15 is connect with the voltage amplifier circuit；And include: and PWM output and control circuit
Resistance R5, the capacitor C3 of 22 connections, the resistance R5 and capacitor C3 are connected in parallel, and the resistance R5 and capacitor C3 are connected in parallel
It is connected in series afterwards in the resistance R14, the resistance R14 is connect with the voltage amplifier circuit and the resistance R15, equipment electricity
Source voltage is inputted by equipment supply input interface circuit 21, is formed through the resistance R4, resistance R15 and resistance R5, resistance R14
Voltage sampling circuit provides A/D for described control unit U1 and detects input sample voltage, and described control unit U1 can be according to reading
Equipment id information control output pwm signal the main power source module 1 to export correct voltage to supply for equipment power end
Electricity.Two groups of voltage sampling circuits that the resistance R4, resistance R15 and the resistance R5, resistance R14 of the invention is separately constituted
Resistance value is different from the setting of resistance proportion, and can satisfy enclosing for various types digital equipment wider range supply voltage model needs
It wants, which can be 3V to 20V, improve the accuracy of output voltage, detect when described control unit U1 is read
Equipment supply voltage it is correct when can open equipment power supply output control switch Q3, in addition, apparatus of load current sampling resistor R44
Both ends obtain current sampling voltage and amplify through the voltage amplifier circuit, and control unit A/D is read, multilevel iudge real time load electricity
Current value set by flow valuve and equipment id information, the rated current limit value beyond device id setting, described control unit U1 meeting
Stand-by power source output control switch Q3 is automatically closed, stops powering to equipment, and then achievees the purpose that protect equipment.It is described adjustable defeated
Incoming interface circuit 24 with the main power source module 1 for connecting.
The main power source module 1 includes: system power supply circuit 11, pwm circuit 12, disturbing pulse suppression circuit 13, intelligence
Electric power outputting current detection adjusts circuit 15 and equipment with intelligence and connects for electricity output with compensation circuit 14, supply voltage multi-channel control
Mouth circuit 16, the system power supply circuit 11 is for providing power supply, the pwm circuit 12 and the system power supply circuit 11, institute
Disturbing pulse suppression circuit 13 and the supply voltage multi-channel control is stated to connect, with intelligence adjusting circuit 15 for pwm signal coupling
Close input and pwm signal ratio enlargement, the disturbing pulse suppression circuit 13 and the pwm circuit 12, system power supply electricity
Road 11 connects, for avoiding disturbing pulse, the intelligent power output electric current measure and compensation circuit 14 and the system power supply
Circuit 11, the disturbing pulse suppression circuit 13 connection, for the detection and intelligent compensation to electric current is exported, the supply voltage
Multi-channel control and intelligence adjust circuit 15 and the system power supply circuit 11, the pwm circuit 12, the disturbing pulse inhibit electricity
Road 13 and the intelligent power output electric current measure are connect with compensation circuit 15, for adjusting the pwm circuit 12, the interference
Pulse suppression circuit 13 and the intelligent power output electric current measure and this three roads voltage signal energy direct proportion of compensation circuit 14
When compensation calibration apparatus of load size variation, generated on 2 conducting wires between the main power source module 1 and the equipment power module
Voltage drop loss, equipment power supply output interface circuit 16 and the intelligent power output electric current measure and compensation circuit 14 and
The adjustable input interface circuit 24 connects, the telecommunications for transmitting intelligent power output circuit detection with compensation circuit
Number output.The pwm circuit 12 includes: optically coupled circuit U9, the optically coupled circuit U9 input terminal by resistance R67 with it is described
Disturbing pulse suppression circuit 13 connects, and one end of the optically coupled circuit U9 output end passes through resistance R68 and the system power supply
The connection of circuit 11, the other end connect amplifying circuit, and the amplifying circuit includes: amplifier U8, input with the amplifier positive
The resistance R60 for holding connection, with the resistance R60 resistance R57 concatenated and capacitor C29, the resistance R57 and the capacitor C29
It is connected in parallel and is grounded, the feedback resistance R20 connecting with the negative input end of the amplifier U8 is exported with the amplifier U8
Hold the diode D16 of connection.The main power source module 1 obtains smooth voltage by the photoelectric coupled circuit U9, filter capacitor C29
Signal, then through ratio enlargement/following circuit to realize impedance transformation and diode D16 isolation, first via FB voltage signal is most
After be transported to supply voltage multi-channel control and intelligence adjust 15 voltage of circuit adjustment foot complete voltage control.Disturbing pulse inhibits electricity
Road 13 includes: comparator U7, the diode D15 and resistance R53 connecting with the non-inverting input terminal of the comparator U7, two pole
The pipe D15 and resistance R53 is in parallel, and the cathode ground connection of the diode D15, connects with the inverting input terminal of the comparator U7
Connecting resistance R51 and resistance R45, is connected in parallel between the resistance R51 and the resistance R45, another termination of resistance R45
Ground, the diode D13 connecting with the output end of the comparator U7, when system initial power-on, described control unit U1 is not completed
Self-test does not have pwm signal output, or when transmission pwm signal conducting wire exception disconnection, the comparator U7 reverse input end voltage
For GND (0V), it is less than positive input voltage 0.6V, the comparator U7 output is disconnected at this time, exports close to the comparator U7
The high level of supply voltage, and through the diode D13 export the second road FB high level signal to supply voltage multi-channel control and
Intelligence adjusts circuit 15, it is ensured that the moment of abnormal case, which will not generate disturbing pulse, leads to damage to equipment.The intelligence electricity
Source output electric current measure and compensation circuit 14 include: voltage amplifier circuit, for amplifying the supply voltage multi-channel control and intelligence
It is adjustable the voltage of the transmission of circuit 15；And compare amplifying circuit, it is put with the disturbing pulse suppression circuit 13 connection, for compared with
The voltage of the big voltage amplifier circuit transmission, the voltage amplifier circuit includes: resistance R44, for obtaining apparatus of load electricity
Flow proportional voltage drop；Amplifier U5, for amplifying the voltage drop obtained through the resistance R44 and will amplify
Voltage transmission compares amplifying circuit to described；The IN+ pin of the amplifier U5 is connect with the resistance R44, OUT output pin
Amplifying circuit connection, v+ pin and REF the pin amplifying circuit compared with described connect compared with described, the relatively amplifying circuit
It include: comparator U3, resistance R25, resistance R22, the resistance R25 and the institute being connect with the non-inverting input terminal of the comparator U3
It is in parallel to state resistance R22, connects with the resistance R25 and the resistance R23 in parallel with the resistance R22, with the resistance R23 and
The resistance R28, the resistance R38 being connect with the comparator U3 reverse input end, resistance R34 of the voltage amplifier circuit connection,
The resistance R38 and the resistance R34 are in parallel, and the resistance R34 other end connects the output end of the comparator U3, the electricity
It hinders the R38 other end and connects the voltage amplifier circuit, and the resistance R29 and resistance R24 that connect with the comparator U3 output end,
It is connected in parallel between the resistance R29 and the resistance R24, the equipment source current both ends sampling resistor R44 obtain and equipment
The voltage drop of load current direct proportionality is amplified through the amplifier U5, is sent to comparator U3 backward end and forward end voltage
It is compared operation, the FB voltage signal for generating the inversely proportional relationship of load current is adjusted to supply voltage multi-channel control and intelligence
Circuit 15, this third road FB voltage signal energy direct proportion compensation calibration apparatus of load current variation when main power source with set
The voltage drop loss generated on conducting wire between stand-by power source, to guarantee that the voltage of equipment power supply is accurate.The supply voltage multichannel control
System adjusts circuit 15 under the above three roads FB voltage signal intelligent control with intelligence, and output equipment supply voltage is powered defeated through equipment
Outgoing interface circuit 16 is transported to equipment power end.
From the above, it can be seen that a kind of intelligent power supply circuit of digital equipment of the invention, the equipment power supply mould
Block 2 obtains facility information in real time, identifies device id, the adjusting detection switch control with control circuit 22 by PWM output
Infomation detection voltage, the load current that circuit 23 processed is transmitted according to PWM output with control circuit 22, and then control voltage
Output, the information that the main power source module 1 transmit according to the equipment power module 2, by the pwm circuit 12, it is described do
Disturbing pulse suppression circuit 13, the intelligent power output electric current measure and compensation circuit 14 will send out after the Electric signal processing received
It send to the supply voltage multi-channel control and intelligence and adjusts circuit 15, the supply voltage multi-channel control and intelligence adjust circuit 15
Adjust the pwm circuit 12, the disturbing pulse suppression circuit 13 and the intelligent power output electric current measure and compensation circuit
When the compensation calibration apparatus of load size variation of 14 this three roads voltage signal energy direct proportion, in the main power source module 1 and described
The voltage drop loss generated on 2 conducting wires of equipment power module, the pwm circuit 12 and the system power supply circuit 11 output pair
Answer pwm signal and corresponding voltage.The present invention has the control voltage of automatic identification intelligence, current parameters output, is suitable for each
The equipment of kind different voltages and power, the transmission pressure between main power source and equipment generate under electrical equipment different loads electric current
Voltage drop loss and deviation can be calibrated by pwm signal automatic synchronization, also avoid electrical equipment load current be mutated when production
The functions such as raw disturbing pulse damage issuable to equipment.
Above disclosed is only presently preferred embodiments of the present invention, cannot limit rights protection model of the invention with this
It encloses, therefore according to equivalent variations made by scope of the present invention patent, is still within the scope of the present invention.
Claims (10)
1. a kind of intelligent power supply circuit of digital equipment characterized by comprising main power source module, and with the main power source mould
The equipment power module of block connection, the equipment power module include:
Equipment supply input interface circuit is identified for device id；
PWM output and control circuit, connect, the device id, and root for identification with the equipment supply input interface circuit
It is instructed according to recognition result generating device supply voltage corresponding relationship；
Detection switch control circuit is adjusted, is connected with the equipment supply input interface circuit, PWM output with control circuit
It connects, controlled for adjustable output electric power detection, load current detection machine equipment for electricity output；And
Adjustable input interface circuit connects to the control circuit, with the main power source module and PWM output for equipment power supply
The supply input of intelligent input, PWM output and the main power source module；
The main power source module includes:
System power supply circuit, for providing power supply；
Pwm circuit, with the system power supply circuit connection, for pwm signal coupling input and pwm signal ratio enlargement；
Disturbing pulse suppression circuit, and the pwm circuit, the system power supply circuit connection, for avoiding disturbing pulse；
Intelligent power output electric current measure and compensation circuit connect with the system power supply circuit, the Design of pulse disturbance restriction circuit
It connects, for the detection and intelligent compensation to electric current is exported；
Supply voltage multi-channel control and intelligence adjust circuit, with the system power supply circuit, the pwm circuit, the interference arteries and veins
It rushes suppression circuit and the intelligent power output electric current measure is connect with compensation circuit, for adjusting the pwm circuit, described dry
Disturb the benefit of this three roads voltage signal energy direct proportion of pulse suppression circuit and the intelligent power output electric current measure Yu compensation circuit
When repaying the variation of calibrator (-ter) unit payload size, the voltage that is generated on conducting wire between the main power source module and the equipment power module
Decreasing loss loses；And
Equipment power supply output interface circuit, connect with the intelligent power output electric current measure with compensation circuit, defeated for intelligence
Voltage needed for equipment power supply out.
2. the intelligent power supply circuit of digital equipment as described in claim 1, which is characterized in that the adjusting detection switch control
Circuit includes: to export the sample circuit connected to the control circuit with the PWM, the voltage amplification electricity connecting with the sample circuit
Road, and the control circuit being connect with the sample circuit and the voltage amplifier circuit.
3. the intelligent power supply circuit of digital equipment as claimed in claim 2, which is characterized in that the sample circuit include: with
The PWM exports resistance R4, the capacitor C2 connected to the control circuit, and the resistance R4 and capacitor C2 are connected in parallel, and the electricity
Resistance R4 and capacitor C2 is connected in series after being connected in parallel in the resistance R15, and the resistance R15 and the voltage amplifier circuit connect
It connects；It and include: that resistance R5, capacitor C3, the resistance R5 and the capacitor C3 parallel connection connected to the control circuit with PWM output connects
Connect, and the resistance R5 and capacitor C3 be connected in parallel after be connected in series in the resistance R14, the resistance R14 and the voltage
Amplifying circuit and the resistance R15 connection.
4. the intelligent power supply circuit of digital equipment as described in claim 1, which is characterized in that the pwm circuit includes: optocoupler
Circuit U 9 is closed, the optically coupled circuit U9 input terminal is connect by resistance R67 with the disturbing pulse suppression circuit, the optocoupler
The one end for closing 9 output end of circuit U connect amplifying circuit with the system power supply circuit connection, the other end by resistance R68.
5. the intelligent power supply circuit of digital equipment as claimed in claim 4, which is characterized in that the amplifying circuit includes: to put
Big device U8, the resistance R60 being connect with the amplifier normal phase input end, with the resistance R60 resistance R57 concatenated and capacitor
C29, the resistance R57 and the capacitor C29 are connected in parallel and are grounded, and connect with the negative input end of the amplifier U8 anti-
Feed resistance R20, the diode D16 being connect with the amplifier U8 output end.
6. the intelligent power supply circuit of digital equipment as described in claim 1, which is characterized in that the disturbing pulse suppression circuit
It include: comparator U7, the diode D15 and resistance R53 being connect with the non-inverting input terminal of the comparator U7, the diode
The D15 and resistance R53 is in parallel, and the cathode ground connection of the diode D15, connect with the inverting input terminal of the comparator U7
Resistance R51 and resistance R45, is connected in parallel between the resistance R51 and the resistance R45, the resistance R45 other end ground connection,
The diode D13 being connect with the output end of the comparator U7.
7. the intelligent power supply circuit of digital equipment as described in claim 1, which is characterized in that the PWM output and control electricity
Road includes:
Control unit U1 the device id and generates corresponding transmissions instruction according to recognition result for identification；
Resistance R47, respectively with the NRST pin of described control unit U1 and the system power supply circuit connection；
Capacitor C25, one end is connect with the NRST pin of described control unit U1, the other end is grounded, the resistance R47 and the electricity
Hold C25 to be connected in parallel；
Resistance R40 is connect with the PD1 pin of described control unit U1 and the pwm circuit respectively；
Diode D6, anode is connect with the PD2 pin of control unit U1, cathode is connect with the pwm circuit, the resistance R40
It is connected in parallel with the diode D6.
8. the intelligent power supply circuit of digital equipment as described in claim 1, which is characterized in that the intelligent power exports electric current
It detects with compensation circuit and includes:
Voltage amplifier circuit adjusts the voltage of circuit transmission for amplifying the supply voltage multi-channel control and intelligence；
Compare amplifying circuit, with disturbing pulse suppression circuit connection, the amplification voltage amplifier circuit transmission for compared with
Voltage.
9. the intelligent power supply circuit of digital equipment as claimed in claim 8, which is characterized in that the voltage amplifier circuit packet
It includes:
Resistance R44, for obtaining the proportional voltage drop of apparatus of load electric current；
Amplifier U5, for amplifying the voltage drop obtained through the resistance R44 and voltage transmission will be amplified to the comparison
Amplifying circuit；
The IN+ pin of the amplifier U5 is connect with the resistance R44, OUT output pin compared with described amplifying circuit connection,
V+ pin and REF the pin amplifying circuit compared with described connect.
10. the intelligent power supply circuit of digital equipment as claimed in claim 8, which is characterized in that the relatively amplifying circuit packet
It includes: comparator U3, the resistance R25 being connect with the non-inverting input terminal of the comparator U3, resistance R22, the resistance R25 and described
Resistance R22 is in parallel, connects with the resistance R25 and the resistance R23 in parallel with the resistance R22, with the resistance R23 and institute
State the resistance R28, the resistance R38 connecting with the comparator U3 reverse input end, resistance R34 of voltage amplifier circuit connection, institute
It states resistance R38 and the resistance R34 is in parallel, the resistance R34 other end connects the output end of the comparator U3, the resistance
The R38 other end connects the voltage amplifier circuit, and the resistance R29 and resistance R24 that connect with the comparator U3 output end, institute
It states and is connected in parallel between resistance R29 and the resistance R24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340656.2A CN109286315A (en) | 2018-11-12 | 2018-11-12 | A kind of intelligent power supply circuit of digital equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340656.2A CN109286315A (en) | 2018-11-12 | 2018-11-12 | A kind of intelligent power supply circuit of digital equipment |
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| CN109286315A true CN109286315A (en) | 2019-01-29 |
Family
ID=65175404
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811340656.2A Pending CN109286315A (en) | 2018-11-12 | 2018-11-12 | A kind of intelligent power supply circuit of digital equipment |
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