CN106528911B - A kind of device for establishing power supply VHDL-AMS simulation model - Google Patents
A kind of device for establishing power supply VHDL-AMS simulation model Download PDFInfo
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- CN106528911B CN106528911B CN201610824300.0A CN201610824300A CN106528911B CN 106528911 B CN106528911 B CN 106528911B CN 201610824300 A CN201610824300 A CN 201610824300A CN 106528911 B CN106528911 B CN 106528911B
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- G06F30/20—Design optimisation, verification or simulation
Abstract
The invention discloses a kind of device for establishing power supply VHDL-AMS simulation model, settings: input terminal step module, output end step module；Input terminal step module includes: power module；Two oscillographs in parallel with the input terminal of power module and output end respectively；Respectively with concatenated two current testing circuits of the input terminal of power module and output end；With the concatenated load of current testing circuit and MOSFET pipe switching circuit；Output end step mould includes: power module；Two oscillographs in parallel with the input terminal of power module and output end respectively；Respectively with concatenated two current testing circuits of the input terminal of power module and output end；With the concatenated electronic load of current testing circuit.Power supply apparatus is equivalent to two-port network by the present invention, the input current, input voltage, output electric current, output voltage of multiple groups synchronization two-port network is obtained, for estimating the black-box model of power supply apparatus；It facilitates experiment measurement and experimental data obtains.
Description
Technical field
The invention belongs to power source model technical field more particularly to a kind of dresses for establishing power supply VHDL-AMS simulation model
It sets.
Background technique
For system-level modeling, manufacturer will not usually provide the internal circuit configuration of power supply apparatus.And product
Databook also only provides the common characteristics of practical application.In this case, when no enough information is available, Yao Jianli
The behavioral trait of complete power source model, and in the case where the whitepack model or grey BOX Model of power supply apparatus can not be obtained, just
It needs using black-box model method.Power supply class model, can be equivalent at two-port network model.Only there are two port, inputs for it
End and output end.
Summary of the invention
The purpose of the present invention is to provide a kind of devices for establishing power supply VHDL-AMS simulation model, it is intended to solve in device
Portion information is insufficient, can not establish in the case of power source model the problem of establishing simulation model to power supply.
The invention is realized in this way a kind of device for establishing power supply VHDL-AMS simulation model, described to establish power supply
The device of VHDL-AMS simulation model is provided with
Input terminal step module is remained unchanged by controlling input voltage, estimates two-port network inverse current gain Hi
With output impedance ZoThe transmission function of two parameters；
Output end step module is remained unchanged by control output electric current, estimates two-port network inputs admittance YiJust
To voltage gain GoThe transmission function of two parameters；
The input terminal step module includes:
Power module；
Two oscillographs in parallel with the input terminal of power module and output end respectively；
Respectively with concatenated two current testing circuits of the input terminal of power module and output end；
With the concatenated load of current testing circuit and MOSFET pipe switching circuit；
The output end step mould includes:
Power module；
Two oscillographs in parallel with the input terminal of power module and output end respectively；
Respectively with concatenated two current testing circuits of the input terminal of power module and output end；
With the concatenated electronic load of current testing circuit；
The resistance in parallel with electronic load.
Further, the current testing circuit gain can be indicated with formula (1), or be expressed as formula (2).Various gain institutes
The resistance R neededGAs shown in table 2.
Further, the connection of the current testing circuit is as follows:
Instrumentation amplifier, the outer connecting resistance R of 2,3 input terminals1Input current is tested with series current Table X MM3, and is provided
Input voltage Vin, the resistance R of 1,8 ports connection control AD620 gainG, 4,7 are respectively connected to generating positive and negative voltage power supply, 5,6 ports point
Other test reference voltage and output voltage.
Further, the electronic load constitutes circuit using OP07, and circuit connection is as follows:
Bipolar operational amplifier, 3 port input reference voltages, 4,7 ports are separately connected power voltage supply and ground, and 6 ends connect
Enhanced NMOS is met, and source level connection is for changing the resistance R of circuital current1, the voltage source of the drain connection 12V of NOMS,
XCP1 test point is chosen, the mode of electric current conversion voltage is selected to measure.
Further, the MOSFET pipe generates diode pressure difference, and circuit connection is as follows:
Enhanced NMOS tube, grid connect voltage source, source level ground connection, and drain meets load resistance R1With 12V voltage, diode
It is parallel to NMOS tube, and with XSC1 parallel connection measuring diode pressure difference.
Power supply apparatus is equivalent to two-port network by the device provided by the invention for establishing power supply VHDL-AMS simulation model
Method, the input current of multiple groups synchronization two-port network, input voltage, output electric current, output voltage are obtained, for estimating
Count the black-box model of power supply apparatus；It facilitates experiment measurement and experimental data obtains.
Detailed description of the invention
Fig. 1 is input terminal step experimental configuration schematic diagram provided in an embodiment of the present invention.
Fig. 2 is output end step experimental configuration schematic diagram provided in an embodiment of the present invention.
Fig. 3 is current testing circuit connection schematic diagram provided in an embodiment of the present invention.
Fig. 4 is electronic load circuit connection schematic diagram provided in an embodiment of the present invention.
Fig. 5 is the electronic load circuit figure of variable current provided in an embodiment of the present invention.
Fig. 6 is MOSFET pipe on-off principle figure provided in an embodiment of the present invention.
Fig. 7 is that MOSFET pipe provided in an embodiment of the present invention does switch generation diode pressure difference circuit diagram.
Fig. 8 is that multilevel diode provided in an embodiment of the present invention generates voltage difference connection schematic diagram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Power supply apparatus is equivalent to the side of two-port network to obtain the behavioral trait of power supply apparatus model by the present invention
Method obtains the input current, input voltage, output electric current, output voltage of multiple groups synchronization two-port network, for estimating electricity
The black-box model of source device；And in order to which more convenient carries out experiment measurement and experimental data acquisition, devise the device.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
The device provided in an embodiment of the present invention for establishing power supply VHDL-AMS simulation model is using four oscillographs while surveying
The voltage value in circuit is measured, as shown in Fig. 1 Fig. 2, wherein the oscillograph for being connected in parallel on power input and output end measures input respectively
Voltage, output voltage, other two oscillograph is in current testing circuit, oscillograph to measure real-time electricity in current testing circuit
The current value on the real-time road is calculated according to the characteristic and formula (3) of current testing circuit, passes through input terminal for pressure, the voltage
With the current testing circuit of output end can operation obtain input current, output electric current, experiment number can be collected real-time, quickly
According to；As depicted in figs. 1 and 2, it is divided into the experiment of input terminal step and the experiment of output end step.
Setting such as the following table 1 in measuring circuit:
1. experimental data of table acquires table
The device provided in an embodiment of the present invention for establishing power supply VHDL-AMS simulation model includes:
Current testing circuit is realized using instrument amplifier AD620.AD620 is a kind of low-power consumption, high-precision meter amplification
Device, it only needs an outer connecting resistance, i.e., settable various gains.The selection of gain according to actual needs, passes through RGTo select
The gain of AD620.In order to provide precise gain to AD620, it should which service precision is that 0.1~1%, temperature coefficient is less than
100ppm/ DEG C of resistance RG.As G=1, RGIt is not connected to (i.e. RG=∞), other gains can be indicated with formula (1), or be expressed as
Formula (2).Resistance R needed for various gainsGAs shown in table 2.
2. gain resistor of table and corresponding gain relationship
Wherein, current measurement circuit is substantially to convert the current to voltage measurement.It is as shown in Figure 3 to test circuit.Pass through
XMM1 voltmeter measures output voltage, can reflect the numerical value of input terminal electric current by calculating.Calculation formula is (3).Wherein Iin
It is input current, UoutIt is output voltage, R1It is the test resistance connect in instrument amplifier input terminal, G is to calculate gain.
The output voltage values calculation formula being calculated is such as shown in (4).
Uout=G*Iin*RinReference voltage U5 (4)
For example, working as RGWhen for 1% precise gain value being 49.9, measure, reference voltage U5=11.794V, is calculated
Input current is 109.52mA, and actually entering electric current is 100mA, and demonstrating the experimental provision can be used to indicate electricity with voltage
Stream.That is, may be constructed such corresponding relationship according to formula (4): when obtaining output voltage, can illustrate corresponding
Input current.
Electronic load constitutes circuit using OP07, it is a kind of low noise, the bipolarity operation amplifier of non-chopper-zero-stabilized
Device.The designs of DC Electronic Loads as shown in figure 4, the electronic load under constant current mode, as long as changing R1Resistance value, reflection
The current value of XCP1 test point can also change out.
The circuit can be readily available stable and accurate current value, R1For sample resistance, VrefFor Setting signal.When
Give a signal VrefWhen, if R1On voltage be less than Vref, that is, OP07 IN- be less than IN+, OP07 output increase,
Metal-oxide-semiconductor increasing is set to lead to R1Electric current increase.If R1On voltage be greater than VrefWhen, IN- is less than IN+, and OP07 reduces,
Just reduce R1The electric current of upper process, such circuit can maintain on constant given value always, also be achieved that constant current work
Make.And in this device, it is to work as R using the effect of the electronic load1When change, different electric currents is generated for device use.
If by R1Change variable resistance into, so that it may convenient to change the current value shown in circuit.As shown in figure 5, R1For can
Power transformation resistance, at this point, passing through the available current value arbitrarily changed of resistance value for changing variable resistance.
MOSFET pipe switching circuit using MOSFET pipe as switching generally is being received because its switching speed is very fast
Second grade, and do not postpone inside MOSFET pipe.In the experiment of Fig. 3 input terminal step, using MOSFET, used as switch,
When switch mosfet closure, the forward conduction of diode, forward voltage drop, silicone tube about 0.7V, formation voltage difference, to generate defeated
Enter the step condition of terminal voltage value.The principle that switch generates diode pressure difference circuit is done as shown in Figure 6 and Figure 7 for MOSFET pipe
Figure.
In the variation of the 0.7V voltage difference, the situation of change of the voltage value of four oscillographs of input terminal output end is recorded,
And acquire the voltage value.If necessary to bigger voltage difference, several diodes that can more connect are realized, as shown in figure 8, two
Diode can generate the voltage difference of about 1.4V.
Oscillograph, sample frequency want higher, and according to Shannon's sampling theorem, sample frequency should be at least the two of switching frequency
It is high again.
Power supply indicates the black-box model module of power supply class device.
Further, the connection of the current testing circuit is as follows.
Instrumentation amplifier, the outer connecting resistance R of 2,3 input terminals1Input current is tested with series current Table X MM3, and is provided
Input voltage Vin, the resistance R of 1,8 ports connection control AD620 gainG, 4,7 are respectively connected to generating positive and negative voltage power supply, 5,6 ports point
Other test reference voltage and output voltage.
Further, the electronic load constitutes circuit using OP07, and circuit connection is as follows.
Bipolar operational amplifier, 3 port input reference voltages, 4,7 ports are separately connected power voltage supply and ground, and 6 ends connect
Enhanced NMOS is met, and source level connection is for changing the resistance R of circuital current1, the voltage source of the drain connection 12V of NOMS,
XCP1 test point is chosen, the mode of electric current conversion voltage is selected to measure.
Further, the MOSFET pipe generates diode pressure difference, and circuit connection is as follows:.
Enhanced NMOS tube, grid connect voltage source, source level ground connection, and drain meets load resistance R1With 12V voltage, diode
It is parallel to NMOS tube, and with XSC1 parallel connection measuring diode pressure difference.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (3)
1. a kind of device for establishing VHDL-AMS power source model, which is characterized in that the dress for establishing VHDL-AMS power source model
It sets and is provided with
Input terminal step module is remained unchanged by controlling input voltage, estimates two-port network inverse current gain HiAnd output
Impedance ZoThe transmission function of two parameters；
Output end step module is remained unchanged by control output electric current, estimates two-port network inputs admittance YiAnd forward voltage
Gain GoThe transmission function of two parameters；
The input terminal step module includes:
Power module；
Two oscillographs in parallel with the input terminal of power module and output end respectively；
Respectively with concatenated two current testing circuits of the input terminal of power module and output end；
With the concatenated load of current testing circuit and MOSFET pipe switching circuit；
The output end step module includes:
Power module；
Two oscillographs in parallel with the input terminal of power module and output end respectively；
Respectively with concatenated two current testing circuits of the input terminal of power module and output end；
With the concatenated electronic load of current testing circuit；
The resistance in parallel with electronic load；
The current testing circuit gain can be indicated with formula (1), or be expressed as formula (2)；G indicates to calculate gain, various increasings
The required resistance R of benefitGIt is as follows:
The connection of the current testing circuit is as follows:
Instrumentation amplifier, the outer connecting resistance R of 2,3 input terminals1Input current is tested with series current Table X MM3, and input is provided
Voltage Vin, the resistance R of 1,8 ports connection control AD620 gainG, 4,7 are respectively connected to generating positive and negative voltage power supply, 5,6 ports difference
Test reference voltage and output voltage.
2. establishing the device of VHDL-AMS power source model as described in claim 1, which is characterized in that the electronic load uses
OP07 constitutes circuit, and circuit connection is as follows:
Bipolar operational amplifier, 3 port input reference voltages, 4,7 ports are separately connected power voltage supply and ground, and the connection of 6 ends increases
Strong type NMOS, and source level connection is for changing the resistance R of circuital current1, the voltage source of the drain connection 12V of NOMS, selection
XCP1 test point selects the mode of electric current conversion voltage to measure.
3. establishing the device of VHDL-AMS power source model as described in claim 1, which is characterized in that the MOSFET pipe switch
It is as follows that circuit generates diode pressure difference circuit connection:
Enhanced NMOS tube, grid connect voltage source, source level ground connection, and drain meets load resistance R1With 12V voltage, diodes in parallel
In NMOS tube, and with XSC1 parallel connection measuring diode pressure difference.
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| CN101887080A (en) * | 2010-06-24 | 2010-11-17 | 电子科技大学 | Method for testing ytterbium meter dynamic piezo-resistance |
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