CN116204033B - Parameter setting system of power supply device and design method thereof - Google Patents
Parameter setting system of power supply device and design method thereof Download PDFInfo
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- CN116204033B CN116204033B CN202310464861.4A CN202310464861A CN116204033B CN 116204033 B CN116204033 B CN 116204033B CN 202310464861 A CN202310464861 A CN 202310464861A CN 116204033 B CN116204033 B CN 116204033B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention provides a parameter setting system of a power supply device and a design method thereof, wherein in the design method, at least one path of parameter configuration module is arranged at the front stage of a power supply control circuit of the power supply device according to the application requirement of the power supply device, and a resistor with a resistance value within the resistance value interval is selected as the configuration resistance of each path of parameter configuration module through the mapping relation between the resistance value interval of the configuration resistance of the parameter configuration module and a working register in a corresponding register group, so that the resistance value of the configuration resistance of the parameter configuration module arranged outside the power supply device is flexibly adjusted, the power supply control circuit of the power supply device can be provided with required power supply parameters after each power-on reset, the flexibility of the working parameter setting of the power supply device is improved, the parameter setting (debugging) cost and the production cost are reduced, and the system design method of the application is simple and easy to use, software control is not needed, and the operation (use) difficulty is greatly reduced.
Description
Technical Field
The application relates to the technical field of power supply systems and power supply device parameter configuration, in particular to a power supply device parameter setting system and a design method thereof.
Background
Because the application scene of the power supply device has a plurality of kinds of changes, the working parameter requirements of different application scenes on the power supply source can have larger difference, for example, the key working parameters such as the output voltage, the output current, the power-on time sequence and the like of the power supply source can be changed along with the change of the application scenes. In order to cope with such practical application requirements, the power supply device generally supports a function of setting working parameters, that is, based on one design of the power supply device, the power supply device adapts to application requirements of different scenes through setting the working parameters.
The current proposal in the industry can realize the function of parameter definition, and is mainly divided into two types of parameter setting before delivery and parameter setting after delivery. The power supply device parameter setting method before delivery comprises the following steps: laser trimming, electrical trimming, built-in OTP (One Time Programmable, one-time programmable) memory, etc.; the power supply device parameter setting method after delivery comprises the following steps: built-in MTP (Multi Time Programmable), multiple-time programmable) memory, software settings, etc. Referring to table 1, table 1 is a comparison of the advantages and disadvantages of the above method.
TABLE 1
| Parameter setting method | Flexibility of | Cost of | Software for providing a plurality of applications |
| Laser trimming | Disposable, low in flexibility | Trimming process to increase production line cost | Without any means for |
| Electric trimming | Disposable, low in flexibility | Trimming process to increase production line cost | Without any means for |
| Built-in OTP memory | Disposable, low in flexibility | The manufacturer needs to pay the IP fee of OTP | Without any means for |
| Built-in MTP memory | No limit of the number of times of use and high flexibility | Manufacturers need to pay the IP cost of MTP and also need to build in a communication module Block (serial communication module such as I2C, SPI) and large circuit scale | Without any means for |
| Software settings | No limit of the number of times of use and high flexibility | Requires a built-in communication module (serial communication module such as I2C, SPI) Block), large circuit scale | Requiring software control, adding Difficulty of use |
As can be seen from table 1, the above-mentioned existing power supply device parameter setting methods have respective drawbacks, which have a great influence on the cost control and practical application of the product.
Disclosure of Invention
The application provides a parameter setting system of a power supply device and a design method thereof, which can solve at least one of the problems of higher cost, poorer flexibility, higher use difficulty and the like of the existing power supply device parameter setting method.
In one aspect, an embodiment of the present application provides a parameter setting system of a power supply device, including: a power-on reset module, a linear voltage stabilizing module, a power supply module and at least one path of parameter configuration module, wherein,
the power-on reset module is used for generating reset signals and respectively sending the reset signals to each path of parameter configuration module;
the power supply module is used for providing an initial high level for the linear voltage stabilizing module and the power-on reset module;
the linear voltage stabilizing module is used for converting the initial high level into a stable high level and providing the stable high level for each path of parameter configuration module;
each path of parameter configuration module is used for providing power supply parameters for a power supply control circuit of the power supply device after each power-on reset;
wherein, partial circuits in the power-on reset module, the linear voltage stabilizing module and the parameter configuration module are arranged in the power supply device; the power supply module and the residual circuits in the parameter configuration module are arranged outside the power supply device;
each parameter configuration module comprises: the power supply device comprises a power supply device, a power supply circuit, a power-on reset module and a power supply circuit, wherein the power supply device is internally provided with a current source, an analog-to-digital converter, a register set and a multiplexer, and a configuration resistor arranged outside the power supply device, the negative electrode of the current source is connected with the stable high level, the positive electrode of the current source is respectively connected with one end of the configuration resistor and the input end of the analog-to-digital converter, the other end of the configuration resistor is grounded, the output end of the analog-to-digital converter is connected with the control end of the multiplexer, the input end of the power-on reset module is connected with the initial high level, the output end of the power-on reset module is respectively connected with the reset end of the analog-to-digital converter and the reset end of the register set, and the output end of the register set is connected with the input end of the power supply control circuit;
the power supply module includes: the direct-current power supply is connected with the capacitor in parallel, the negative electrode of the direct-current power supply is grounded, and the positive electrode of the direct-current power supply is respectively connected with the linear voltage stabilizing module and the power-on reset module;
the linear voltage stabilizing module comprises: the source electrode of the PMOS tube is connected with the output end of the power supply module to receive the initial high level, the drain electrode of the PMOS tube is connected with the first end of the third resistor and then connected with the cathodes of the current sources in the parameter configuration modules to provide stable high level for the current sources in the parameter configuration modules, the grid electrode of the PMOS tube is connected with the output end of the operational amplifier, the third resistor is connected with the fourth resistor in series, the second end of the fourth resistor is grounded, the positive input end of the operational amplifier is connected with a series node between the third resistor and the fourth resistor, and the negative input end of the operational amplifier is connected with a reference voltage.
Optionally, in the parameter setting system of the power supply device, the configuration resistors with different resistance intervals are replaced to provide different configuration voltages for the analog-digital converter, the analog-digital converter quantizes the configuration voltages into digital control signals and outputs the digital control signals to the multiplexer, and the multiplexer selects the power supply parameters in the corresponding working registers in the register set according to the digital control signals and provides the power supply parameters to the power supply control circuit.
Optionally, in the parameter setting system of the power supply device, the register set includes: m working registers, wherein m is an integer greater than or equal to 2.
Optionally, in the parameter setting system of the power supply device, the power supply parameter includes: voltage parameters, current parameters, and start-up timing parameters.
On the other hand, the embodiment of the application also provides a design method of a parameter setting system of a power supply device, wherein the design method of the parameter setting system of the power supply device is executed by the parameter setting system of the power supply device, and the design method of the parameter setting system of the power supply device comprises the following steps:
determining the number of power supply parameters to be set according to the application requirements of the power supply device;
determining the number of paths of parameter configuration modules of a parameter setting system of the power supply device participating in operation according to the number of the power supply parameters to be set;
determining a gear to be set for each power supply parameter;
determining a current value of a current source of the parameter configuration module;
the mapping relation between the resistance interval of the configuration resistor of each path of the parameter configuration module and the working register in the register group corresponding to the parameter configuration module is obtained by simulating the parameter setting system of the power supply device;
according to the mapping relation between the resistance intervals of each power parameter and the configuration resistor and the working register, determining the resistance interval of the configuration resistor of each parameter configuration module;
selecting a resistor with a resistance value within the resistance value interval as a configuration resistor of each path of parameter configuration module;
generating a reset signal by using a power-on reset module of a parameter setting system of the power supply device, and respectively sending the reset signal to each path of parameter configuration module;
and providing the power supply parameters to be set for a power supply control circuit of the power supply device by utilizing each path of the parameter configuration module.
Optionally, in the method for designing a parameter setting system of a power supply device, the step of obtaining a mapping relationship between a resistance interval of a configuration resistor of each path of the parameter configuration module and a working register corresponding to the register group by simulating the parameter setting system of the power supply device includes:
determining the resolution of an analog-to-digital converter of the parameter configuration module corresponding to each power supply parameter according to the number of the working registers;
determining a configuration voltage interval corresponding to each gear according to the resolution of the analog-to-digital converter and the voltage value of the stable high level;
and acquiring a resistance value interval of the configuration resistor according to the configuration voltage interval and the current value of the current source.
The technical scheme of the application at least comprises the following advantages:
according to the application requirements of the power supply device, at least one path of parameter configuration module is arranged at the front stage of the power supply control circuit of the power supply device, and a resistor with the resistance value in the resistance value interval is selected as the configuration resistance of each path of parameter configuration module through the mapping relation between the resistance value interval of the configuration resistance of the parameter configuration module and the working registers in the corresponding register group.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a parameter setting system of a power supply device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a circuit structure of a linear voltage regulator module according to an embodiment of the present invention;
FIG. 3 is a flow chart of a design method of a parameter setting system of a power supply device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a mapping relationship between configuration resistors and registers in a parameter setting system of a power supply device for setting two working parameters according to an embodiment of the present invention;
wherein reference numerals are as follows:
100-power supply device, 10-power-on reset module, 21-parameter configuration module I, 22-parameter configuration module II, 211-current source I, 221-current source II, 212-analog-digital converter I, 222-analog-digital converter II, 213-register group I, 223-register group II, 214-multiplexer I, 224-multiplexer II, 215-configuration resistor I, 225-configuration resistor II, 30-power supply control circuit, 40-power supply module, 50-linear voltage stabilizing module.
Detailed Description
The following description of the embodiments of the present application will be made apparent and complete in conjunction with the accompanying drawings, in which embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other.
An embodiment of the present invention provides a parameter setting system of a power supply device, referring to fig. 1, fig. 1 is a schematic structural diagram of the parameter setting system of the power supply device according to an embodiment of the present invention, where the parameter setting system of the power supply device includes: the power-on reset module 10, the linear voltage stabilizing module 50, the power supply module 40 and at least one path of parameter configuration module (two paths of parameter configuration modules are illustrated in the embodiment, namely, the parameter configuration module one 21 and the parameter configuration module two 22 respectively).
The power-on reset module 10 is configured to generate a reset signal, and send the reset signal to the first parameter configuration module 21 and the second parameter configuration module 22 respectively; the power supply module 40 is configured to provide an initial high level Vin to the linear voltage stabilizing module 50 and the power-on reset module 10; the linear voltage stabilizing module 50 is configured to convert the initial high level Vin to a stable high level VCC, and to provide the stable high level VCC to the first parameter configuration module 21 and the second parameter configuration module 22; the first parameter configuration module 21 and the second parameter configuration module 22 are configured to provide power parameters to the power control circuit 30 of the power supply device 100 after each power-on reset, that is, the first parameter configuration module 21 and the second parameter configuration module 22 are configured to provide power parameters to the power control circuit 30 of the power supply device 100 after receiving the reset signal.
In this embodiment, the power supply device may be a power supply chip.
In this embodiment, the power supply parameters include, but are not limited to: voltage parameters, current parameters, and start-up timing parameters. The type of the power supply parameters is not limited, and the power supply parameters are met by corresponding one path of parameter configuration modules. Further, the power-on reset module 10, the linear voltage stabilizing module 50, the partial circuits in the first parameter configuration module 21 and the partial circuits in the second parameter configuration module 22 are disposed inside the power supply device 100, and the residual circuits in the first parameter configuration module 21 and the second parameter configuration module 22, and the power supply module 40 are disposed outside the power supply device 100.
In this embodiment, the parameter setting system of the power supply device includes two parameter configuration modules (a first parameter configuration module 21 and a second parameter configuration module 22), and specific circuit structures of the first parameter configuration module 21 and the second parameter configuration module 22 are described.
Preferably, one path of the parameter configuration module one 21 includes: a first current source 211, an analog-to-digital converter (ADC) 212, a first register set 213, and a first multiplexer 214 disposed inside the power supply device 100, and a first configuration resistor 215 disposed outside the power supply device 100.
Further, the other path of the second parameter configuration module 22 includes: a second current source 221, an analog-to-digital converter (ADC) 222, a second register bank 223, and a second multiplexer 224 disposed inside the power supply device 100, and a second configuration resistor 225 disposed outside the power supply device 100.
In the parameter configuration module one 21 and the parameter configuration module two 22, the negative poles of the current source one 211 and the current source two 221 are connected to a stable high level VCC, the positive poles of the current source one 211 and the current source two 221 are respectively connected to one end of the configuration resistor one 215, one end of the configuration resistor two 225 and the input end of the analog-digital converter one 212, the input end of the analog-digital converter two 222, the other end of the configuration resistor one 215 and the other end of the configuration resistor two 225 are grounded, the output end of the analog-digital converter one 212 is connected to the control end of the multiplexer one 214, the output end of the analog-digital converter two 222 is connected to the control end of the multiplexer two 224, the input end of the power-on reset module 10 is connected to an initial high level Vin, the output end of the power-on reset module 10 is respectively connected to the reset end of the analog-digital converter one 212, the reset end of the analog-digital converter two 222 and the reset end of the register group one 213, the reset end of the register group two 223, the output end of the register group one 213 is connected to the control end of the multiplexer one 214, the output end of the multiplexer two 223 is connected to the control end of the multiplexer one 224, and the output end of the multiplexer two output end of the multiplexer output circuit 30 is connected to the output end of the multiplexer two output end of the multiplexer input end of the multiplexer one 224.
Specifically, the first current source 211 is configured to supply power to the first external configuration resistor 215; the second current source 221 is configured to supply power to the second external configuration resistor 225, and form a parameter configuration voltage on the first configuration resistor 215 and the second configuration resistor 225. In this embodiment, the first current source 211 and the second current source 221 both provide 10uA;
the first configuration resistor 215 is used for selecting the power supply parameters preset in the first register set 213; the second configuration resistor 225 is used to select the power parameters preset in the second register set 223. The resistance value (interval) has a corresponding relation with the address of a working register where a preset power supply parameter is located;
the analog-to-digital converter one 212 is configured to quantize the configuration voltage into a digital control signal and output the digital control signal to the multiplexer one 214; the second analog-to-digital converter 222 is configured to quantize the configuration voltage into a digital control signal and output the digital control signal to the second multiplexer 224;
the first multiplexer 214 is configured to gate the power parameters set by the user through the first configuration resistor 215 to the power control circuit 30; the second multiplexer 224 is used to select the power parameters set by the user through the second configuration resistor 225 to the power control circuit 30. The strobe control signal (digital control signal) of the multiplexer one 214 is provided by the analog-to-digital converter one 212; the strobe control signal (digital control signal) of the multiplexer two 224 is provided by the analog-to-digital converter two 222. The first multiplexer 214 and the second multiplexer 224 default strobe channel "0" during power-up; after power-on reset, gating the corresponding channels according to gating control signals output by the first analog-to-digital converter 212 and the second analog-to-digital converter 222;
the first register set 213 and the second register set 223 are used for presetting different power supply parameters. According to practical application needs, a plurality of groups of registers can be provided for storing different kinds of parameters.
Preferably, each of the first register set 213 and the second register set 223 may include: m working registers, wherein m is an integer greater than or equal to 2.
In this embodiment, the first register set 213 and the second register set 223 each include: 8 working registers.
It should be noted that the power-on reset module 10 may be any conventional power-on reset circuit, and in this embodiment of the present application, it is only required to ensure that the power-on reset module 10 can generate a reset signal to output to the first adc 212, the first register set 213, and the second adc 222 and the second register set 223 in the first parameter configuration module 21 and the second parameter configuration module 22 after power-on.
Further, the first analog-to-digital converter 212 and the second analog-to-digital converter 222 may be any conventional analog-to-digital converter (ADC); the first multiplexer 214 and the second multiplexer 224 may be any conventional type of Multiplexer (MUX).
Preferably, as shown in fig. 1, the power supply module 40 includes: the power-on reset module comprises a direct-current power supply I1 and a capacitor C, wherein the direct-current power supply I1 is connected with the capacitor C in parallel, the negative electrode of the direct-current power supply I1 is grounded, and the positive electrode of the direct-current power supply I1 is respectively connected with the input end of the linear voltage stabilizing module 50 and the input end of the power-on reset module 10 so as to provide an initial high level Vin for the linear voltage stabilizing module 50 and the power-on reset module 10.
Preferably, referring to fig. 2, fig. 2 is a schematic circuit structure of a linear voltage stabilizing module according to an embodiment of the present invention, and the linear voltage stabilizing module 50 includes: the source of the PMOS tube is connected to the output end of the power supply module 40 to receive the initial high level Vin, and the drain of the PMOS tube is connected to the negative electrode of the first current source 211 in the first parameter configuration module 21 and the negative electrode of the second current source 221 in the second parameter configuration module 22 after being connected to the first end of the third resistor R3 to provide a stable high level VCC for each path of the first current source 211 in the first parameter configuration module 21 and the second current source 221 in the second parameter configuration module 22. The grid electrode of the PMOS tube is connected with the output end of the operational amplifier, the third resistor R3 and the fourth resistor R4 are connected in series, the second end of the fourth resistor R4 is grounded, the positive input end of the operational amplifier is connected with a series node between the third resistor R3 and the fourth resistor R4, the negative input end of the operational amplifier is connected with a reference voltage Vref, and the reference voltage Vref can be provided by a band-gap reference source inside a chip.
The principle of the working parameter setting of the power supply device is mainly as follows: by replacing the first configuration resistor 215 with a different resistance interval outside the power supply device 100 to provide the first analog-to-digital converter 212 with a different configuration voltage, the first analog-to-digital converter 212 quantizes the configuration voltage into a digital control signal and outputs the digital control signal to the first multiplexer 214, and the first multiplexer 214 selects the power parameter in the corresponding working register in the first register set 213 according to the digital control signal and provides the power parameter to the power control circuit 30. Similarly, by replacing the second configuration resistor 225 with a different resistance interval outside the power supply device 100 to provide the second analog-to-digital converter 222 with a different configuration voltage, the second analog-to-digital converter 222 quantizes the configuration voltage into a digital control signal and outputs the digital control signal to the second multiplexer 224, and the second multiplexer 224 selects the power parameter in the corresponding working register in the second register set 223 according to the digital control signal and provides the power parameter to the power control circuit 30.
In this application, at least one path of parameter configuration module is set at the front stage of the power control circuit 30 of the power supply device 100, and the resistance value of the configuration resistor of the parameter configuration module disposed outside the power supply device 100 is adjusted, so that after each power-on reset, the power supply parameter can be provided for the power control circuit 30 of the power supply device 100, the flexibility of setting the working parameters of the power supply device is improved, the parameter setting (debugging) cost and the production cost are reduced, the system design method of this application is simple and easy to use, no software control is required, and the operation (use) difficulty is greatly reduced.
Referring to fig. 3, fig. 3 is a flowchart of a design method of a parameter setting system of a power supply device according to an embodiment of the present invention, where the design method of the parameter setting system of the power supply device includes:
first, step S10 is performed: determining the number of power supply parameters to be set according to the application requirements of the power supply device;
then, step S20 is performed: determining the number of paths of parameter configuration modules of a parameter setting system of the power supply device participating in operation according to the number of the power supply parameters to be set;
next, step S30 is performed: and determining the gear to be set for each power supply parameter to determine the number of working registers in the first register group 213 of the corresponding first parameter configuration module 21 and the number of working registers in the second register group 223 of the second parameter configuration module 22.
In this embodiment, the gear to be set for each power parameter is 8, so the number of working registers in the first register group 213 of the first parameter configuration module 21 and the number of working registers in the second register group 223 of the second parameter configuration module 22 are 8.
Further, after determining the gear to be set for each power parameter (step S30), and before generating the reset signal by using the power-on reset module 10 of the parameter setting system of the power supply device (step S40), the design method of the parameter setting system of the power supply device may further include:
step S31: and determining the current value of the current source of each path of parameter configuration module (a parameter configuration module I21 and a parameter configuration module II 22).
Step S32: and simulating a parameter setting system of the power supply device to acquire the mapping relation between the resistance interval of the configuration resistor of each path of parameter configuration module and the working register corresponding to the register group.
Step S33: and determining the resistance value interval of the configuration resistor of each path of parameter configuration module according to the mapping relation between the resistance value interval of each power parameter and the configuration resistor and the working register.
Step S34: and selecting a resistor with a resistance value within the resistance value interval as a configuration resistor of each path of parameter configuration module.
After step S34, step S40 is continued: the power-on reset module 10 of the parameter setting system of the power supply device is used for generating a reset signal, and the reset signal is respectively sent to the first parameter configuration module 21 and the second parameter configuration module 22 of each path.
Finally, step S50 is performed: the power supply control circuit 30 of the power supply device is provided with the power supply parameters to be set by utilizing the parameter configuration modules (a first parameter configuration module 21 and a second parameter configuration module 22).
Specifically, by simulating the parameter setting system of the power supply device, the obtaining the mapping relationship between the resistance interval of the configuration resistor of each path of the parameter configuration module and the working register corresponding to the register group (step S32) specifically may include:
step S32.1: determining the resolution of an analog-to-digital converter of the parameter configuration module corresponding to each power supply parameter according to the number of the working registers;
step S32.2: determining a configuration voltage interval corresponding to each gear according to the resolution of the analog-to-digital converter and the voltage value of the stable high level; the upper limit (maximum value) of the j-th configuration voltage interval is j/k multiplied by the voltage value of the stable high level VCC, wherein j is an integer greater than or equal to 1; k is a decimal number corresponding to the resolution of the analog-to-digital converter. Further, the lower limit (minimum value) of the jth arrangement voltage section is the upper limit of the jth-1 arrangement voltage section. It is noted that the lower limit of the 1 st configuration voltage interval is 0V.
In this embodiment, the number of working registers in the first register group 213 of the first parameter configuration module 21 and the number of working registers in the second register group 223 of the second parameter configuration module 22 are all 8, so that the first analog-to-digital converter 212 and the second analog-to-digital converter 222 each select a 3-bit ADC, and the decimal number corresponding to the resolution of the analog-to-digital converter is 8. In this embodiment, therefore, the upper limit (maximum value) of the 2 nd arrangement voltage interval is 0.75V, and the lower limit is the upper limit of the 1 st arrangement voltage interval, that is, the lower limit (minimum value) of the 2 nd arrangement voltage interval is 0.375V.
Step S32.3: and acquiring a resistance value interval of the configuration resistor according to the configuration voltage interval and the current value of the current source.
Specifically, the resistance interval of the configuration resistor includes: the actual resistance of the configuration resistor is the quotient of the corresponding configuration voltage and the current value of the current source, and a specific calculation formula is R=U/I, wherein R is the actual resistance of the configuration resistor; u is the configuration voltage; i is the current value of the current source.
In this embodiment, VCC is 3V, and the current value of the current source is 10uA, and referring to fig. 4, fig. 4 is a schematic diagram of a mapping relationship between a configuration resistor and a register in the parameter setting system of the power supply device for setting two working parameters according to the embodiment of the present invention. In this embodiment, the first register set 213 and the second register set 223 each include: 8 working registers. The 8 working registers of register group one 213 are respectively: register set one_0, register set one_1, register set one_2, register set one_3, register set one_4, register set one_5, register set one_6, and register set one_7; the 8 working registers of the register group two 223 are respectively: register set two_0, register set two_1, register set two_2, register set two_3, register set two_4, register set two_5, register set two_6, and register set two_7.
In this embodiment, the parameter setting system of the power supply device supports two working parameter settings, the two parameters correspond to 8 gears, the circuit can theoretically support 8 x8=64 settable options only by using 2 configuration resistors (a configuration resistor one 215 and a configuration resistor two 225), and so on, if the parameter setting system of the power supply device includes n paths of parameter configuration modules, the first path of parameter configuration modules corresponds to X gears (X working registers), the second path of parameter configuration modules corresponds to y gears (y registers), and the nth path of parameter configuration modules corresponds to z gears (z registers), x×y×··xz settable options can be supported, where n is an integer greater than or equal to 1, and X, y and z are integers greater than or equal to 2. Therefore, the parameter setting system of the power supply device provided by the embodiment of the application not only reduces the cost of the power supply device, but also greatly reduces the variety of chips and can effectively reduce the complexity of a supply chain.
According to the application requirements of the power supply device, at least one path of parameter configuration module is arranged at the front stage of the power supply control circuit of the power supply device, and a resistor with the resistance value in the resistance value interval is selected as the configuration resistance of each path of parameter configuration module through the mapping relation between the resistance value interval of the configuration resistance of the parameter configuration module and the working registers in the corresponding register group, so that the resistance value of the configuration resistance of the parameter configuration module arranged outside the power supply device is flexibly adjusted, required power supply parameters can be provided for the power supply control circuit of the power supply device after power-on reset each time, the flexibility of setting the working parameters of the power supply device is improved, and the parameter setting (debugging) cost and the production cost are reduced.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While nevertheless, obvious variations or modifications may be made to the embodiments described herein without departing from the scope of the invention.
Claims (6)
1. A parameter setting system of a power supply device, comprising: a power-on reset module, a linear voltage stabilizing module, a power supply module and at least one path of parameter configuration module, wherein,
the power-on reset module is used for generating reset signals and respectively sending the reset signals to each path of parameter configuration module;
the power supply module is used for providing an initial high level for the linear voltage stabilizing module and the power-on reset module;
the linear voltage stabilizing module is used for converting the initial high level into a stable high level and providing the stable high level for each path of parameter configuration module;
each path of parameter configuration module is used for providing power supply parameters for a power supply control circuit of the power supply device after each power-on reset;
wherein, partial circuits in the power-on reset module, the linear voltage stabilizing module and the parameter configuration module are arranged in the power supply device; the power supply module and the residual circuits in the parameter configuration module are arranged outside the power supply device;
each parameter configuration module comprises: the power supply device comprises a power supply device, a power supply circuit, a power-on reset module and a power supply circuit, wherein the power supply device is internally provided with a current source, an analog-to-digital converter, a register set and a multiplexer, and a configuration resistor arranged outside the power supply device, the negative electrode of the current source is connected with the stable high level, the positive electrode of the current source is respectively connected with one end of the configuration resistor and the input end of the analog-to-digital converter, the other end of the configuration resistor is grounded, the output end of the analog-to-digital converter is connected with the control end of the multiplexer, the input end of the power-on reset module is connected with the initial high level, the output end of the power-on reset module is respectively connected with the reset end of the analog-to-digital converter and the reset end of the register set, and the output end of the register set is connected with the input end of the power supply control circuit;
the power supply module includes: the direct-current power supply is connected with the capacitor in parallel, the negative electrode of the direct-current power supply is grounded, and the positive electrode of the direct-current power supply is respectively connected with the linear voltage stabilizing module and the power-on reset module;
the linear voltage stabilizing module comprises: the source electrode of the PMOS tube is connected with the output end of the power supply module to receive the initial high level, the drain electrode of the PMOS tube is connected with the first end of the third resistor and then connected with the cathodes of the current sources in the parameter configuration modules to provide stable high level for the current sources in the parameter configuration modules, the grid electrode of the PMOS tube is connected with the output end of the operational amplifier, the third resistor is connected with the fourth resistor in series, the second end of the fourth resistor is grounded, the positive input end of the operational amplifier is connected with a series node between the third resistor and the fourth resistor, and the negative input end of the operational amplifier is connected with a reference voltage.
2. The parameter setting system of a power supply device according to claim 1, wherein the analog-to-digital converter quantizes the configuration voltage into a digital control signal to be output to the multiplexer by changing the configuration resistor of a different resistance interval to provide the different configuration voltage to the analog-to-digital converter, and the multiplexer selects the power supply parameter in a corresponding operation register in the register group according to the digital control signal to provide to the power supply control circuit.
3. The parameter setting system of a power supply device according to claim 1, wherein the register group includes: m working registers, wherein m is an integer greater than or equal to 2.
4. The parameter setting system of a power supply device according to claim 1, wherein the power supply parameter includes: voltage parameters, current parameters, and start-up timing parameters.
5. A method of designing a parameter setting system of a power supply device, characterized in that the method of designing a parameter setting system of a power supply device is performed by the parameter setting system of a power supply device according to any one of claims 1 to 4, the method of designing a parameter setting system of a power supply device comprising:
determining the number of power supply parameters to be set according to the application requirements of the power supply device;
determining the number of paths of parameter configuration modules of a parameter setting system of the power supply device participating in operation according to the number of the power supply parameters to be set;
determining a gear to be set for each power supply parameter;
determining a current value of a current source of the parameter configuration module;
the mapping relation between the resistance interval of the configuration resistor of each path of the parameter configuration module and the working register in the register group corresponding to the parameter configuration module is obtained by simulating the parameter setting system of the power supply device;
according to the mapping relation between the resistance intervals of each power parameter and the configuration resistor and the working register, determining the resistance interval of the configuration resistor of each parameter configuration module;
selecting a resistor with a resistance value within the resistance value interval as a configuration resistor of each path of parameter configuration module;
generating a reset signal by using a power-on reset module of a parameter setting system of the power supply device, and respectively sending the reset signal to each path of parameter configuration module;
and providing the power supply parameters to be set for a power supply control circuit of the power supply device by utilizing each path of the parameter configuration module.
6. The method according to claim 5, wherein the step of obtaining the mapping relationship between the resistance interval of the configuration resistor of each path of the parameter configuration module and the working register corresponding to the register group by simulating the parameter setting system of the power supply device comprises:
determining the resolution of an analog-to-digital converter of the parameter configuration module corresponding to each power supply parameter according to the number of the working registers;
determining a configuration voltage interval corresponding to each gear according to the resolution of the analog-to-digital converter and the voltage value of the stable high level;
and acquiring a resistance value interval of the configuration resistor according to the configuration voltage interval and the current value of the current source.
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| CN101795071A (en) * | 2009-12-28 | 2010-08-04 | 福建星网锐捷网络有限公司 | DC-DC power supply device, voltage regulation method and network equipment |
| CN105468068A (en) * | 2015-11-25 | 2016-04-06 | 广东工业大学 | Special constant current source for measurement of semiconducting material high-temperature thermoelectric property and control method for same |
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| CN109936290A (en) * | 2019-04-29 | 2019-06-25 | 深圳市力生美半导体股份有限公司 | Switching power circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102014014690B4 (en) * | 2014-10-02 | 2021-01-21 | Dialog Semiconductor (UK) Ltd | Voltage regulator and method for voltage regulation with determination of the output power |
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| CN101795071A (en) * | 2009-12-28 | 2010-08-04 | 福建星网锐捷网络有限公司 | DC-DC power supply device, voltage regulation method and network equipment |
| CN105468068A (en) * | 2015-11-25 | 2016-04-06 | 广东工业大学 | Special constant current source for measurement of semiconducting material high-temperature thermoelectric property and control method for same |
| CN106325348A (en) * | 2016-08-29 | 2017-01-11 | 中国科学院长春光学精密机械与物理研究所 | Method of control multi-mode power |
| CN109936290A (en) * | 2019-04-29 | 2019-06-25 | 深圳市力生美半导体股份有限公司 | Switching power circuit |
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