CN109672339A - A kind of multi-channel digital power supply - Google Patents
A kind of multi-channel digital power supply Download PDFInfo
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- CN109672339A CN109672339A CN201910141508.6A CN201910141508A CN109672339A CN 109672339 A CN109672339 A CN 109672339A CN 201910141508 A CN201910141508 A CN 201910141508A CN 109672339 A CN109672339 A CN 109672339A
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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
- H02M3/158—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 including plural semiconductor devices as final control devices for a single load
- H02M3/1584—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 including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of multi-channel digital power supplys, include master controller, the key control circuit of user's interaction, OLED display circuit, STM32F334 controls minimum system plate, BUCK/BOOST hardware circuit, ADC sample circuit, driving circuit and reverse-connection preventing circuit, using master-slave mode processor architecture, with multichannel two directions' inputing delivery outlet and the unidirectional delivery outlet of multichannel, rich interface, parameter setting is carried out by master controller, it is transferred to control minimum system plate, achieve the effect that control output, it controls minimum system plate and system parameter such as voltage and current etc. is returned into master control borad, master control borad is shown by OLED；For support SMBUS agreement lithium battery, it can be achieved that charging/discharging function it is adaptive；Hardware has serial communication bus interface, can be communicated with computer, and host computer shows and control digital power.
Description
Technical field
The invention belongs to power supply unit field more particularly to a kind of multi-channel digital electricity using master-slave mode processor architecture
Source.
Background technique
In recent years, as dependence of the people to electronic equipment is increasingly enhanced, the cruise duration of equipment is proposed increasingly
High requirement, therefore a kind of integrate charging-function of supplying power electronic product --- mobile power source comes into being.From existing
From the point of view of data, use the structure of two unidirectional DC/DC converter reverse parallel connections real in a manner of pure hardware circuit in some documents
The function of now charging with power supply significantly increases system member device since the flow direction fixation of its energy does not have invertibity
The quantity of part simultaneously reduces functional density.And it is proposed in some documents with the side of processor and power management chip collaborative work
Formula carries out the scheme of battery charging condition management, although increasing the integrated level of system in this way, output power is smaller, with
The promotion of current battery monomer capacity, quick charge improve charge power as trend, which is obviously not suitable for.Separately
It proposes to solidify the control logic of reversible transducer in chip using power management chip there are also documents and materials outside, still
It cannot achieve the voltage output and bigger charging current of different stalls.Digital switch power supply have high efficiency, high-adaptability with
And flexible interactive function, the system that can be applied to is monitored, and handles power parameter in real time, is able to satisfy any complexity
Power requirement, peripheral circuit are simplified, and are had flexible and changeable design scheme, are simplified hardware development process.In the prior art, number
There are two types of the topological structures of two-way BUCK/BOOST for word power supply: the topological structure of the first two-way BUCK/BOOST has positive decompression
With two kinds of operating modes of reversed boosting, i.e., in one direction can only buck or boost, but be not able to satisfy and compare for use
Wide voltage requirements range；The topological structure of second of two-way BUCK/BOOST had then not only been able to achieve boosting in the same direction, but also
It is able to achieve decompression, but the input/output port of the program is single, is not able to satisfy power demands.
Summary of the invention
In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a kind of multi-channel digital power supplys, using principal and subordinate
Formula processor architecture, has multichannel two directions' inputing delivery outlet and the unidirectional delivery outlet of multichannel, rich interface, and master controller carries out parameter
It is transferred to control minimum system plate after setting, realizes the control of output；For supporting the lithium battery of SMBUS agreement, can also be achieved
Charging/discharging function it is adaptive；Hardware has serial communication bus interface, can be communicated with computer, and host computer shows and controls
Digital power.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of multi-channel digital power supply characterized by comprising
Master controller as control core；
Control minimum system plate as executing agency；
For controlling the bidirectional DC-DC converter circuit of battery charge and discharge process, the bidirectional DC-DC converter circuit is
BUCK-BOOST circuit；
For driving the driving circuit of bidirectional DC-DC converter circuit；
For acquiring input voltage, output voltage, the signal for exporting electric current and the signal of acquisition being carried out operation control, perseverance
Press the ADC sample circuit of constant current output；
For the auxiliary power circuit for system power supply；
The key circuit of setting delivery outlet voltage and current value for being interacted with user；
For display working condition, output voltage, the display circuit for exporting current parameters information, display circuit connects OLED
Screen；
The control minimum system plate is arranged at least 2 pieces, and at least 2 blocks control minimum system plates are in parallel, and the control is minimum
System board and the master controller are communicated using spi bus, and each block of control minimum system plate controls output voltage electric current all the way,
The topological structure of control minimum system plate is manipulated by master controller, and passes through the input and output of setting control minimum system plate
Mode realizes multichannel input, multiple-channel output；The master controller connects with auxiliary power circuit, key circuit, display circuit respectively
It connects；The master controller and display circuit are communicated using iic bus, OLED screen display working condition, output voltage, output electric current
Parameter information；Mini system is done in the two-phase DC-DC conversion circuit, voltage and current sample circuit and battery charge-discharge circuit and control
Plate is correspondingly arranged at least two, each block of control minimum system plate and two-phase DC-DC conversion circuit, voltage and current sample circuit and
Battery charge-discharge circuit connection, at least two two-phase DC-DC conversion circuit is identical, that is, has at least two identical
BUCK-BOOST circuit, each block of control minimum system plate connect a BUCK-BOOST circuit, individually control each road output, double
Phase DC-DC conversion circuit is connect with D.C. regulated power supply and battery charge-discharge circuit respectively, the battery charge-discharge circuit and electricity
The connection of current voltage sample circuit；The accessory power supply be master controller, control minimum system plate, driving circuit, display circuit,
OLED power supply.Further, the master controller is STM32F107 chip, and STM32F107 is that STMicw Electronics releases completely newly
The stronger product of a performance in STM32 interconnected type (Connectivity) Series of MCU, the various height of this integrated chip
Property industrial standard interface, and STM32 different model product has perfect compatibility on pin and software, can easily fit
It should more apply.
Further, the control minimum system plate is STM32F334, and the driving circuit is UCC27211 chip, institute
UCC27211 chip drives metal-oxide-semiconductor is stated, the HRPWM module of the STM32F334 generates PWM, and the PWM of STM32F334 exports letter
Number pin is connected to UCC27211 chip, HO the and LO pin of UCC27211 chip is respectively used to the upper of control BUCK-BOOST circuit
The conducting and shutdown of pipe and down tube achieve the purpose that adjust duty ratio control voltage and current；5 feet of the UCC27211 chip and
6 feet are the PWM input signal pin for controlling minimum system plate, and 3 feet and 8 feet are the input control signal pin of driving circuit, 4 feet
For output pin of booting.UCC27211 chip is the half-bridge driven chip that TI has independent high side and low side drive, the chip
It is internally integrated bootstrap diode, outside need is connected bootstrap capacitor, high side metal-oxide-semiconductor is driven by the way of Bootstrap.
Further, the current sampling circuit uses INA282 chip, and 1 and 8 feet of INA282 chip, which are separately connected, to be adopted
The both ends of sample resistance R52, INA282 chip sample electric current.
Further, the auxiliary power circuit includes XL6019 circuit, LM2596-ADJ circuit, LM317 circuit and another
One LM2596-ADJ circuit；XL6019 circuit is connect with input port, and the output end and LM2596-ADJ circuit of XL6019 circuit are defeated
Enter end to be connected, LM2596-ADJ circuit output end is connected with LM17 circuit and another LM2596-ADJ circuit respectively；Current sample
The input voltage of circuit first passes through XL6019 and boosts to 40V, is depressurized to 12V by voltage reduction module LM2596-ADJ, obtained 12V
Voltage is divided into two-way, obtains 3.3V voltage by LM317 all the way as single-chip microcontroller power supply, in addition obtains all the way by LM2596-ADJ
5V output, and be driving circuit, OLED display circuit, key control circuit, master controller power supply.XL6019 is a to aim at liter
The monolithic integrated optical circuit of pressure, buck design works in DC5V to 40V input voltage range, low ripple, built-in power MOS；
Fixed oscillator built in XL6019 and power compensating circuit, simplify circuit design；The adjustable duty of PWM control loop
Than from linear change between 0-90%；Built-in overcurrent protection function is in EN foot logic level turn-off function.LM2596 series is beauty
The 3A electric current output buck switching mode integrated voltage-stabilized chip of National Semiconductor, state production, it includes fixed oscillator
(150KHZ) and benchmark voltage-stablizer (1.23v), and there is perfect protection circuit, current limit, Thermal shutdown circuit etc..Utilize this
Device only needs few peripheral components that can constitute efficient voltage regulator circuit.What is provided has: 3.3V, 5V, 12V and adjustable (- ADJ) etc.
Multiple voltage class products.In addition, the chip, which additionally provides the external of working condition, controls pin.LLM317 is that application is the widest
One of general power IC, it not only has the simplest form of fixed three-terminal voltage-stabilizing circuit, but also with output voltage
Adjustable feature.In addition, also having many advantages, such as that range of regulation is wide, voltage regulation performance is good, noise is low, Ripple Suppression is than high.LM317 is
Adjustable 3 proper Voltagre regulators, the electric current more than 1.5A, this pressure stabilizing are capable of providing in output voltage range 1.2V to 37V
Device be highly susceptible to using.
Further, the voltage includes input/output port voltage resistance R54 and R61, boosting buffering using circuit
Module divider resistance R55 and R60, obtained partial pressure value are connected to the current sample pin of STM32F334, obtain reality by operation
Actual value.
Further, the two-phase input/output port setting includes the charge protocol of SMBUS agreement, contains SMBUS agreement
Lithium battery, can be communicated by the chip in STM32F334 and lithium battery to obtain the state of lithium battery, to reach charge and discharge
The adaptive function of electricity.
Master controller is equipped with serial communication bus interface, can be communicated with computer, host computer shows and control number
Power supply.
Compared with prior art, the invention has the advantages that
1. with STM32F334 for digital control core, the two-way DC/DC converter being made of BUCK/BOOST circuit, phase
For simulation control, the hardware design of control system can be reduced using digital control technology, flexibly realize complex control calculation
Method facilitates system intelligent.The present invention has multiple two directions' inputing delivery outlets simultaneously, and cutting for input/output function may be implemented
It changes, comprises in addition multiple unidirectional delivery outlets, 5V output, 12V output and the output of 5-24V adjustable voltage can be fixed.Meanwhile passing through
Software upgrading changes system function and control algolithm, and it is defeated which can be adapted for different capacity demand, multiple voltage gears
Mobile power source application out；
2. the present invention is using STM32F107 as master controller, by corresponding to the input/output state of mouth by key assignments, while can
The output voltage and output electric current for setting delivery outlet, read each mouthful of state in real time, are shown by OLED；
3. the bidirectional interface in the present invention supports SMBUS agreement, for supporting the rechargeable battery of SMBUS agreement, it can be achieved that filling
The adaptation function of electricity；
4. hardware has serial communication bus interface, it can be communicated with computer, host computer shows and control digital power.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawing.
Fig. 1 is overall structure block diagram of the present invention.
Fig. 2 is overall structure circuit diagram of the present invention.
Fig. 3 is single channel control structure schematic diagram of the present invention.
Fig. 4 is BUCK/BOOST topological structure schematic diagram of the present invention.
Fig. 5 is BUCK/BOOST circuit and voltage sampling circuit of the present invention.
Fig. 6 is current sampling circuit of the present invention.
Fig. 7 is drive control circuit of the present invention.
Fig. 8 is reverse-connection preventing circuit of the present invention.
Fig. 9 is 3.3V output circuit of the present invention.
Figure 10 is 5V output circuit of the present invention.
Figure 11 is multi-channel adaptation device input/output structure block diagram of the present invention.
Figure 12 is STM32F334 logic control chart one of the present invention.
Figure 13 is STM32F334 logic control chart two of the present invention.
Figure 14 is STM32F107 logic control chart of the present invention.
Specific embodiment
The present invention will be further described combined with specific embodiments below.
Embodiment 1
The present invention extends a kind of topological structure of multiple-input and multiple-output based on two-way BUCK/BOOST.Described
Digital power includes master controller, the key control circuit of user's interaction, OLED display circuit, the minimum system of STM32F334 control
System plate, BUCK/BOOST hardware circuit, ADC sample circuit, driving circuit and reverse-connection preventing circuit.5V output is hard in the present invention
Part realizes that other 5 tunnels are all to be arranged in parallel 5 tunnels with STM32F334 for control chip basis, and use SPI total with master controller
Line communication.Using STM32F107 as master controller in the present invention, function is capture button signal setting voltage and current size, control
OLED shows, transmits the voltage and current value of setting by spi bus to STM32F334, master controller reading key-press input, master control
Device processed and STM32F334 use the communication modes of spi bus, in such a way that piece selects (chip selection signal), send instructions to pair
Answer the control minimum system plate STM32F334 of I/O port.STM32F34 is by adopting the voltage and current in circuit
Sample, and be compared with the setting value that master controller issues, it is calculated by PI algorithm, obtains PWM duty cycle, pass through driving
Field-effect tube in device driving BUCK/BOOST circuit is controlled, and achievees the effect that adjust voltage and current, according to filling for battery
Electrical characteristics realize the switching of constant pressure and current constant control in a program.Master controller regularly sends instruction and reads to each control most
Mini system plate, control minimum system plate analyzes the instruction, and returns to corresponding data to master controller, to obtain the letter in circuit
Breath, such as voltage and current, the data that master controller can will acquire are sent to OLED in such a way that IIC is communicated and are shown.It is right
In the lithium battery for supporting SMBUS agreement, can be communicated by the chip in STM32F334 and lithium battery to obtain lithium battery
State, to reach the adaptive function of charge and discharge.
Control structure frame of the invention enters shown in following figure 1-3, for input port, by AD sample circuit to input voltage,
Electric current and boosting buffer module voltage carry out signal transformation, are carried out by input voltage signal of the STM32F334 to sample circuit
Corresponding operation is converted and makees, STM32F334 is transported using the voltage value for buffer module of boosting as feedback signal by PI control algolithm
PWM output duty cycle is obtained after calculating, by the voltage stabilization for buffer module of boosting in 42V, while electricity will be inputted by spi bus
Pressure and current value are transmitted to STM32F107, and data are transmitted to OLED by iic bus and shown by STM32F107.Output is connect
Mouthful, by pressing the voltage and current value of key assignments delivery outlet, and STM32F334 is transmitted to by spi bus by STM32F107, as
The Setting signal of voltage, current controlled circuit, the delivery outlet voltage that will test, current value are controlled as feedback signal by PI
Algorithm processed obtains PWM duty cycle after calculating, control output voltage or output electric current.And for output voltage control and output electricity
Flow control is a difference in that given and feedback is different, when being in voltage mode control, with set voltage be it is given, export in fact
Border voltage is feedback, input of the error of the two as PI controller；When being in current control mode, then it is with setting electric current
Given, output actual current is feedback, input of the error of the two as PI controller.
The topological structure that the present invention uses is illustrated in fig. 4 shown below, wherein it is positive to boost, it is reversed decompression.It is from left to right
BOOST (boosting) mode is from right to left BUCK (decompression) mode.Under BOOST mode, upper tube Q1 shutdown, when down tube Q2 is connected,
Capacitor C1 is inductance L charging；Upper tube Q1 conducting, when down tube Q2 is turned off, capacitor C1 and inductance L discharge simultaneously, charge for capacitor C2；
Under BUCK mode, upper tube Q1 conducting, when down tube Q2 is turned off, capacitor C2 charges to inductance L and capacitor C1 simultaneously；Upper tube Q1 shutdown,
When down tube Q2 is connected, inductance L discharges to capacitor C1.By control upper tube Q1 and down tube Q2 conducting (or time of shutdown), just reach
The effect of control output voltage or electric current is arrived.
BUCK circuit and BOOST circuit use the same inductance in BUCK/BOOST topological structure, so the choosing of inductance
With the parameter request that be suitble to BUCK circuit and BOOST circuit simultaneously, inductance and capacitance in circuit will pass through theoretical formula
It is stringent to calculate.
The circuit diagram in voltage sample and BUCK/BOOST in the present invention as shown in figure 5, voltage sampling circuit by two
Divider resistance composition: input/output port voltage resistance R54 and R61 and boosting buffer module divider resistance R55 and R60,
The AD that obtained partial pressure value is connected to STM32F334 is sampled into pin, obtains actual value finally by operation.As for BUCK/
The working principle of BOOST is then not repeated to introduce, and is detailed in Fig. 2 introduction.
As shown in fig. 6, being sampled by INA282 chip to electric current in the present invention, 1 and 8 feet of INA282 connect respectively
The both ends of the sampling resistor R52 of map interlinking 3.
As shown in fig. 7, BUCK/BOOST driving circuit is UCC27211 chip, 5 feet and 6 feet are that the PWM of single-chip microcontroller is inputted
Signal pins, 3 feet and 8 feet are the input control signal pin of driving circuit, and 4 feet are bootstrapping output pin.
As shown in figure 8, the circuit is input reverse-connection preventing circuit, when input reverse-connection, field-effect tube Q6 is in an off state,
The case where preventing input reverse-connection.
As shown in figs. 9-10, auxiliary power circuit includes XL6019 circuit, LM2596-ADJ circuit, LM317 circuit and another
One LM2596-ADJ circuit；XL6019 circuit is connect with input port, and the output end and LM2596-ADJ circuit of XL6019 circuit are defeated
Enter end to be connected, LM2596-ADJ circuit output end is connected with LM17 circuit and another LM2596-ADJ circuit respectively；Bidirectional interface 1,
2,3 input voltage first passes through XL6019 and boosts to 40V, is depressurized to 12V by voltage reduction module LM2596-ADJ, obtained 12V
Voltage is divided into two-way, obtains 3.3V voltage by LM317 all the way as single-chip microcontroller power supply, in addition obtains all the way by LM2596-ADJ
5V output.
The structural block diagram of multi-channel adaptation device input/output section, as shown in figure 11, any road of three road bidirectional interfaces it is defeated
Enter voltage, be boosted up to 42V through BOOST module, is set according to the output voltage to each mouthful, the output of each mouthful of control
Voltage.
STM32F334 master controller pin is as shown in table 1.
The main pin explanation of table 1STM32F334
STM32F107 master controller pin is as shown in table 2.
The main pin explanation of table 2STM32F107
The present invention uses master-slave control mode, host STM32F107, and slave is STM32F334 (totally 5 pieces).
STM32F334 program control flow chart is as illustrated by figs. 12-13.
STM32F107 program control flow chart is as shown in figure 14, as the programs such as sampling, SPI communication, serial communication with
STM32F334 is similar, repeats no more.
Embodiment 2
Minimum system plate STM32F334 is controlled in the present invention can set muti-piece, such as 2 pieces, 3 pieces, 4 pieces, 6 pieces, 7 pieces
It is connected in parallel and is connected on the pin of master controller STM32F107, master controller Deng between, muti-piece control minimum system plate
STM32F107 realizes that multichannel inputs multiple-channel output in such a way that piece selects.
Master controller is equipped with serial communication bus interface, can be communicated with computer, host computer shows and control number
Power supply.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations all should belong to the guarantor of appended claims of the present invention
Protect range.
Claims (7)
1. a kind of multi-channel digital power supply characterized by comprising
Master controller as control core；
Control minimum system plate as executing agency；
For controlling the bidirectional DC-DC converter circuit of battery charge and discharge process, the bidirectional DC-DC converter circuit is BUCK-
BOOST circuit；
For driving the driving circuit of bidirectional DC-DC converter circuit；
For acquiring input voltage, output voltage, the signal for exporting electric current and the signal of acquisition being carried out operation control, constant pressure and constant
Flow the ADC sample circuit of output；
For the auxiliary power circuit for system power supply；
The key circuit of setting delivery outlet voltage and current value for being interacted with user；
For display working condition, output voltage, the display circuit for exporting current parameters information, display circuit connects OLED screen；
The control minimum system plate is arranged at least 2 pieces, and at least 2 blocks control minimum system plates are in parallel, the control minimum system
Plate and the master controller are communicated using spi bus, and each block of control minimum system plate controls output voltage electric current all the way, are passed through
The topological structure of master controller manipulation control minimum system plate, and pass through the input and output mould of setting control minimum system plate
Formula realizes multichannel input, multiple-channel output；The master controller connects with auxiliary power circuit, key circuit, display circuit respectively
It connects；The master controller and display circuit are communicated using iic bus, OLED screen display working condition, output voltage, output electric current
Parameter information；Mini system is done in the two-phase DC-DC conversion circuit, voltage and current sample circuit and battery charge-discharge circuit and control
Plate is correspondingly arranged at least two, each block of control minimum system plate and two-phase DC-DC conversion circuit, voltage and current sample circuit and
Battery charge-discharge circuit connection, at least two two-phase DC-DC conversion circuit is identical, that is, has at least two identical
BUCK-BOOST circuit, each block of control minimum system plate connect a BUCK-BOOST circuit, individually control each road output, double
Phase DC-DC conversion circuit is connect with D.C. regulated power supply and battery charge-discharge circuit respectively, the battery charge-discharge circuit and electricity
The connection of current voltage sample circuit；The accessory power supply be master controller, control minimum system plate, driving circuit, display circuit,
OLED power supply.
2. a kind of multi-channel digital power supply according to claim 1, it is characterised in that: the master controller is STM32F107
Chip.
3. a kind of multi-channel digital power supply according to claim 2, it is characterised in that: the control minimum system plate is
STM32F334, the driving circuit are UCC27211 chip, the UCC27211 chip drives metal-oxide-semiconductor, the STM32F334
HRPWM module generate PWM, the PWM output signal pin of STM32F334 is connected to UCC27211 chip, UCC27211 chip
HO and LO pin controls the conducting and shutdown of the top tube and down tube of BUCK-BOOST circuit respectively, reaches and adjusts duty ratio control electricity
The purpose of current voltage.
4. a kind of multi-channel digital power supply according to claim 1, it is characterised in that: the current sampling circuit uses
INA282 chip, 1 foot and 8 feet of INA282 chip are separately connected the both ends of sampling resistor R52.
5. a kind of multi-channel digital power supply according to claim 1, it is characterised in that: the auxiliary power circuit includes
XL6019 circuit, LM2596-ADJ circuit, LM317 circuit and another LM2596-ADJ circuit；XL6019 circuit and input port connect
Connect, the output end of XL6019 circuit is connected with LM2596-ADJ circuit input end, LM2596-ADJ circuit output end respectively with
LM17 circuit is connected with another LM2596-ADJ circuit.
6. a kind of multi-channel digital power supply according to claim 1, it is characterised in that: the voltage sampling circuit includes input
Delivery outlet voltage resistance, boosting buffer module divider resistance, the AD sampling that obtained partial pressure value is connected to STM32F334 are drawn
Foot obtains actual value by operation.
7. a kind of multi-channel digital power supply according to claim 1, it is characterised in that: the two-phase input/output port setting packet
Include the charge protocol of SMBUS agreement.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110171018A (en) * | 2019-05-25 | 2019-08-27 | 塞伯睿机器人技术（长沙）有限公司 | Robot motor starts control device |
| CN110758174A (en) * | 2019-11-01 | 2020-02-07 | 合肥工业大学 | Distributed modular vehicle-mounted battery management system |
| CN111711356A (en) * | 2020-06-16 | 2020-09-25 | 无锡北方湖光光电有限公司 | Power supply charging and discharging management circuit, manager and management method |
| CN112260335A (en) * | 2020-09-18 | 2021-01-22 | 中国电子科技集团公司第十八研究所 | Intelligent power manager with multi-channel input and output self-adaption |
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