CN109900983A - A kind of measuring device of high frequency transformer parasitic parameter - Google Patents
A kind of measuring device of high frequency transformer parasitic parameter Download PDFInfo
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- CN109900983A CN109900983A CN201910139650.7A CN201910139650A CN109900983A CN 109900983 A CN109900983 A CN 109900983A CN 201910139650 A CN201910139650 A CN 201910139650A CN 109900983 A CN109900983 A CN 109900983A
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Abstract
The invention discloses a kind of measuring devices of high frequency transformer parasitic parameter, comprising: power module, signal generating module, signal acquisition module, signal analysis module and signal-adjusting module；The pumping signal that signal generating module is sent to high frequency transformer to be measured is square-wave signal, without carrying out sweep measurement to high frequency transformer to be measured, belong to time domain measurement, therefore, pendulous frequency greatly reduces, reduce the requirement for measuring device and practical operation, and, high frequency transformer to be measured is adjusted by signal-adjusting module to export to the analog signal of signal acquisition module, so that different digital signals that signal analysis module can receive and the parasitic parameter for obtaining high frequency transformer to be measured according to different Digital Signal Analysis, the analytic process has no vector fitting, compared with existing measurement result is dependent on the measurement method of vector fitting, substantially increase the precision of measurement result.
Description
Technical field
The present invention relates to a kind of measurement of Electromagnetic Launching characteristic technical field more particularly to high frequency transformer parasitic parameter dresses
It sets.
Background technique
High frequency transformer be in Switching Power Supply parasitic parameter at most, on Electromagnetic Launching Model influence maximum component it
One, it is the primary study object of Electromagnetic Launching the characteristic modeling and prediction of Switching Power Supply.
With the raising of working frequency, the leakage inductance closely related with the structure and size of transformer and parasitic capacitance can be to height
The operation of frequency power transformer makes a significant impact, and therefore, the key that the measurement of parasitic parameter has become high frequency transformer research is asked
Topic.
Currently, the measurement of the parasitic parameter about high frequency transformer, usually first with vector network analyzer measurement S ginseng
Then several amplitude and phase carry out circuit structure modeling using vector fitting, so that the parasitism of high frequency transformer be calculated
Parameter.The measurement of the parasitic parameter of existing high frequency transformer is needed by this precision instrument of vector network analyzer to height
Frequency power transformer carries out sweep measurement, belongs to frequency domain measurement mode, not only pendulous frequency is more, but also for measuring device and reality
Operation has very high requirement, in addition, the precision of measurement result is highly dependent on vector fitting, will lead to measurement result in this way
Precision is lower.
Summary of the invention
The purpose of the present invention overcomes the shortcomings of the prior art, and provides a kind of measurement dress of high frequency transformer parasitic parameter
It sets, to simplify the measurement process of parasitic parameter, improves the measurement accuracy of parasitic parameter.
According to an aspect of the present invention, a kind of measuring device of high frequency transformer parasitic parameter is provided, which is characterized in that
It include: power module, signal generating module, signal acquisition module, signal analysis module and signal-adjusting module；Wherein,
The power module respectively with the signal generating module, the signal acquisition module and the signal analysis module
It is electrically connected, for providing power supply to the signal generating module, the signal acquisition module and the signal analysis module；
The signal generating module is electrically connected by signal-adjusting module and high frequency transformer to be measured, for it is described to
It surveys high frequency transformer and sends square-wave signal；
The signal acquisition module is electrically connected by signal-adjusting module and the high frequency transformer to be measured, the signal
It obtains module and the signal analysis module is electrically connected, for receiving the analog signal of the high frequency transformer response to be measured,
The analog signal is converted into be sent to the signal analysis module after digital signal；
The signal-adjusting module is exported for adjusting the high frequency transformer to be measured to the mould of the signal acquisition module
Quasi- signal；
The signal analysis module, the digital signal sent for receiving the signal acquisition module, according to described
Digital Signal Analysis obtains the parasitic parameter of the high frequency transformer to be measured.
In one possible implementation, in above-mentioned measuring device provided in an embodiment of the present invention, the signal tune
Module is saved, is specifically included: substrate, the copper clad layers on the substrate, the first end being electrically connected with the copper clad layers
Mouthful and second port, and the copper clad layers mutually insulated third port and the 4th port, the first connector, the second connector with
And variable resistance；Wherein,
The variable resistance is connected between the third port and first connector, first connector and institute
State signal generating module electric connection；
4th port is electrically connected by second connector and the signal acquisition module；
The first port, the second port, the third port and the 4th port respectively with the height to be measured
The port of frequency power transformer is electrically connected.
In one possible implementation, in above-mentioned measuring device provided in an embodiment of the present invention, the signal hair
Raw module, specifically includes: signal generator；
The signal generator and first connector are electrically connected.
In one possible implementation, in above-mentioned measuring device provided in an embodiment of the present invention, the signal is obtained
Modulus block, specifically includes: oscillograph；
The input terminal of the oscillograph and second connector are electrically connected, the output end of the oscillograph and the letter
Number analysis module is electrically connected.
In one possible implementation, in above-mentioned measuring device provided in an embodiment of the present invention, the signal point
Module is analysed, is specifically included: processor；
The output end of the processor and the oscillograph is electrically connected.
In one possible implementation, in above-mentioned measuring device provided in an embodiment of the present invention, the power supply mould
Block specifically includes: power adapter；
The power adapter is electrically connected with the signal generator, the oscillograph and the processor respectively.
In one possible implementation, in above-mentioned measuring device provided in an embodiment of the present invention, further includes: display
Module；
The display module and the signal generating module are electrically connected, for showing and being arranged the signal generating module
The control parameter of the square-wave signal sent.
In one possible implementation, in above-mentioned measuring device provided in an embodiment of the present invention, the display mould
Block and the signal acquisition module are electrically connected, for receiving and showing the received simulation letter of the signal acquisition module
Number, show and be arranged the control parameter of the analog signal.
In one possible implementation, in above-mentioned measuring device provided in an embodiment of the present invention, the display mould
Block and the signal analysis module are electrically connected, the height to be measured analyzed for receiving and showing the signal analysis module
The parasitic parameter of frequency power transformer.
In one possible implementation, in above-mentioned measuring device provided in an embodiment of the present invention, further includes: signal
Memory module；
The signal memory module and the signal analysis module are electrically connected, for receiving and storing the signal analysis
The parasitic parameter for the high frequency transformer to be measured that module analysis goes out.
Above-mentioned measuring device provided in an embodiment of the present invention, comprising: power module, signal generating module, signal acquisition mould
Block, signal analysis module and signal-adjusting module；Signal generating module sends square-wave signal, signal to high frequency transformer to be measured
The analog signal that module receives high frequency transformer response to be measured is obtained, is sent to signal after converting analog signals into digital signal
Analysis module, signal-adjusting module adjust high frequency transformer to be measured and export to the analog signal of signal acquisition module, signal analysis
Digital Signal Analysis obtains the parasitic parameter of high frequency transformer to be measured to module based on the received；Signal generating module is to high frequency to be measured
The pumping signal that transformer is sent is square-wave signal, without belonging to time domain measurement to high frequency transformer to be measured progress sweep measurement,
Therefore, pendulous frequency greatly reduces, and reduces the requirement for measuring device and practical operation, also, pass through Signal Regulation mould
Block adjusts high frequency transformer to be measured and exports to the analog signal of signal acquisition module, so that signal analysis module can receive not
Digital signal together and the parasitic parameter that high frequency transformer to be measured is obtained according to different Digital Signal Analysis, the analytic process is simultaneously
Scalar potential fitting substantially increases measurement result compared with existing measurement result is dependent on the measurement method of vector fitting
Precision.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of measuring device provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of signal-adjusting module in measuring device provided in an embodiment of the present invention；
Fig. 3 is one of the concrete structure schematic diagram of measuring device provided in an embodiment of the present invention；
Fig. 4 is the two of the concrete structure schematic diagram of measuring device provided in an embodiment of the present invention；
Fig. 5 is the three of the concrete structure schematic diagram of measuring device provided in an embodiment of the present invention；
Fig. 6 is the second structural representation of measuring device provided in an embodiment of the present invention；
Fig. 7 is surface chart shown by display module in measuring device provided in an embodiment of the present invention；
The third structural representation of Fig. 8 measuring device provided in an embodiment of the present invention；
Fig. 9 is the four of the concrete structure schematic diagram of measuring device provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the application embodiment, the technical solution in presently filed embodiment is carried out clear
Chu, complete description, it is clear that described embodiment is merely possible to illustrate, and is not intended to limit the application.
A kind of measuring device of high frequency transformer parasitic parameter provided in an embodiment of the present invention, as shown in Figure 1, comprising: electricity
Source module 1, signal generating module 2, signal acquisition module 3, signal analysis module 4 and signal-adjusting module 5；Wherein,
Power module 1 is electrically connected with signal generating module 2, signal acquisition module 3 and signal analysis module 4 respectively, is used
In to signal generating module 2, signal acquisition module 3 and signal analysis module 4 provide power supply；
Signal generating module 2 is electrically connected by signal-adjusting module 5 and high frequency transformer 6 to be measured, is used for height to be measured
Frequency power transformer 6 sends square-wave signal；
Signal acquisition module 3 is electrically connected by signal-adjusting module 5 and high frequency transformer 6 to be measured, signal acquisition module 3
It is electrically connected with signal analysis module 4, the analog signal responded for receiving high frequency transformer 6 to be measured converts analog signal
At being sent to signal analysis module 4 after digital signal；
Signal-adjusting module 5, for adjusting the output of high frequency transformer 6 to be measured to the analog signal of signal acquisition module 3；Such as
Shown in Fig. 1, signal-adjusting module 5 electrically connects with signal generating module 2, signal acquisition module 3 and high frequency transformer to be measured 6 respectively
It connects, high frequency transformer 6 to be measured is electrically connected with signal generating module 2 and signal acquisition module 3 by signal-adjusting module 5 respectively；
Signal analysis module 4 is obtained for receiving the digital signal of the transmission of signal acquisition module 3 according to Digital Signal Analysis
The parasitic parameter of high frequency transformer 6 to be measured out.
Above-mentioned measuring device provided in an embodiment of the present invention, comprising: power module, signal generating module, signal acquisition mould
Block, signal analysis module and signal-adjusting module；Signal generating module sends square-wave signal, signal to high frequency transformer to be measured
The analog signal that module receives high frequency transformer response to be measured is obtained, is sent to signal after converting analog signals into digital signal
Analysis module, signal-adjusting module adjust high frequency transformer to be measured and export to the analog signal of signal acquisition module, signal analysis
Digital Signal Analysis obtains the parasitic parameter of high frequency transformer to be measured to module based on the received；Signal generating module is to high frequency to be measured
The pumping signal that transformer is sent is square-wave signal, without belonging to time domain measurement to high frequency transformer to be measured progress sweep measurement,
Therefore, pendulous frequency greatly reduces, and reduces the requirement for measuring device and practical operation, also, pass through Signal Regulation mould
Block adjusts high frequency transformer to be measured and exports to the analog signal of signal acquisition module, so that signal analysis module can receive not
Digital signal together and the parasitic parameter that high frequency transformer to be measured is obtained according to different Digital Signal Analysis, the analytic process is simultaneously
Scalar potential fitting substantially increases measurement result compared with existing measurement result is dependent on the measurement method of vector fitting
Precision.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, signal-adjusting module, such as Fig. 2 and
Shown in Fig. 3, can specifically include: substrate 50, the copper clad layers 51 on substrate 50, be electrically connected with copper clad layers 51 the
Single port 52 and second port 53, with the third port 54 of 51 mutually insulated of copper clad layers and the 4th port 55, the first connector 56,
Second connector 57 and variable resistance 58；Wherein, variable resistance 58 is connected between third port 54 and the first connector 56,
As shown in figure 3, the first connector 56 is electrically connected with signal generating module 2；4th port 55 passes through the second connector 57 and letter
Number obtain module 3 be electrically connected；First port 52, second port 53, third port 54 and the 4th port 55 respectively with height to be measured
The port of frequency power transformer 6 is electrically connected.
Specifically, in above-mentioned measuring device provided in an embodiment of the present invention, as shown in Figures 2 and 3, third port 54 with
Between variable resistance 58, between variable resistance 58 and the first connector 56 and can between the 4th port 55 and the second connector 57
It being electrically connected with being realized by microstrip line 59, the resistance value between microstrip line 59 and copper clad layers 51 can be designed as 50 Ω, certainly, the
Between three ports 54 and variable resistance 58, between variable resistance 58 and the first connector 56 and the 4th port 55 is connect with second
Connection type between device 57 is not limited to this, can also be using the other modes that can be realized connection, it is not limited here.
Specifically, in above-mentioned measuring device provided in an embodiment of the present invention, the first connector and the second connector can be with
Use resistance value for SMA (Sub Miniature A) standard connector of 50 Ω, it is of course also possible to use other companies of can be realized
The device of effect is connect, it is not limited here.Specifically, variable resistance can be different by being inserted into 0805 encapsulation component slot
0805 packing forms resistance of resistance value is realized, alternatively, can also be realized by slide rheostat, alternatively, can also pass through
It can be realized the variable other forms of resistance value to realize, it is not limited here.
Specifically, in above-mentioned measuring device provided in an embodiment of the present invention, the material of substrate, which can specifically use, covers copper
Epoxy glass-fiber-fabric substrate, as shown in Fig. 2, the length l of substrate 50 can be designed as 10.5cm, the width w of substrate 50 can be designed
For 2.5cm, the thickness of substrate 50 can be designed as 0.8mm, and the thickness of copper clad layers 51 can be designed as 0.018mm to 0.105mm
Range, the distance between third port 54 and the 4th port 55 (or first port 52 and second port 53) a can be designed as
1.3cm, the distance between second port 53 and the 4th port 55 (or first port 52 and third port 54) b can be designed as
1.2cm, third port 54 and the 4th port 55 to 50 top edge distance c of substrate can be designed as 0.8cm, first port 52 with
The distance d of third port 54 to 50 left edge of substrate can be designed as 4.5cm.Certainly, the size of substrate and copper clad layers is not office
Be limited to this, can the size according to the actual situation to substrate and copper clad layers be adjusted, it is not limited here.
Specifically, in above-mentioned measuring device provided in an embodiment of the present invention, as shown in Fig. 2, first port 52, second end
Mouth 53, third port 54 and the shape of the 4th port 55 are specifically as follows the round hole that diameter is 2mm.Certainly, four ports
Shape is not intended to be limited to round hole, can also be that can be realized the other shapes of connection function, also, the size of four ports
Also it is not limited to this, it is not limited here.
Preferably, in above-mentioned measuring device provided in an embodiment of the present invention, at first port, second port, third end
Mouth and the 4th port are accessed before high frequency transformer to be measured, can be in first port, second port, third port and the 4th port
Calibration component is accessed, in this way, calibrating using calibration component to signal-adjusting module, the parasitism electricity of available signal-adjusting module
Resistance and parasitic capacitance, the calibration data can be subsequently used in the analytic process of signal analysis module, so that analysis result is more
Accurately, so as to further improving the measurement accuracy of parasitic parameter.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, signal generating module, such as Fig. 4 institute
Show, can specifically include: signal generator 20；Signal generator 20 and the first connector 56 are electrically connected.Specifically, signal is sent out
Raw device 20 can pass sequentially through the first connector 56, variable resistance 58, third port 54 and realize company with high frequency rheostat 6 to be measured
It connects, so as to realize that signal generator 20 sends square-wave signal to high frequency rheostat 6 to be measured.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, signal acquisition module, such as Fig. 4 institute
Show, can specifically include: oscillograph 30；The input terminal 30a of oscillograph 30 and the second connector 57 are electrically connected, oscillograph 30
Output end 30b and signal analysis module 4 are electrically connected.Specifically, oscillograph 30 can pass sequentially through the second connector the 57, the 4th
The connection with high frequency rheostat 6 to be measured is realized in port 55, responds so as to realize that oscillograph 30 receives high frequency rheostat 6 to be measured
Analog signal, also, received analog signal can also be converted into being sent to signal analysis after digital signal by oscillograph 30
Module 4.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, signal analysis module, such as Fig. 5 institute
Show, can specifically include: processor 40；The output end 30b of processor 40 and oscillograph 30 is electrically connected, and is shown so as to realize
The digital signal that wave device 30 will convert into is sent to processor 40, processor 40 based on the received Digital Signal Analysis obtain it is to be measured
The parasitic parameter of high frequency transformer 6.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, power module, as shown in figure 5, tool
Body may include: power adapter 10；Power adapter 10 is electrical with signal generator 20, oscillograph 30 and processor 40 respectively
Connection.Specifically, 220V alternating current can be converted to 12V DC electricity by power adapter 10, to for signal generator 20, show
Wave device 30 and processor 40 are powered.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, as shown in fig. 6, can also include:
Display module 7；Display module 7 can be electrically connected with signal generating module 2, and for showing, simultaneously the hair of module 2 occurs for setting signal
The control parameter of the square-wave signal sent.Specifically, the week for the square-wave signal that signal generating module is sent to high frequency transformer to be measured
These parameters of phase, amplitude, duty ratio, rising edge and failing edge can be shown in display module, also, these parameters are all
Be it is adjustable, by the way that different periods, amplitude, duty ratio, rising edge and failing edge are arranged in display module, can make
High frequency transformer to be measured responds different analog signals.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, as shown in fig. 6, display module 7 can
To be electrically connected with signal acquisition module 3, for receiving and showing the received analog signal of signal acquisition module 3, shows and set
Set the control parameter of analog signal.Specifically, the received analog signal of signal acquisition module can be sent to display module, and
Display module is shown, also, display module can also show the control parameter of analog signal, for example, horizontal axis, the longitudinal axis, when
Between, amplitude and triggering, display module can be made to show impulse waveform or damped oscillation waveform, letter by the way that these control parameters are arranged
Number analysis module can analyze the parasitic parameter for obtaining high frequency transformer to be measured using impulse waveform or damped oscillation waveform, pass through
The optimal value of parasitic parameter can also be obtained by adjusting above-mentioned control parameter.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, as shown in fig. 6, display module 7 can
To be electrically connected with signal analysis module 4, the high frequency transformer to be measured 6 analyzed for receiving and showing signal analysis module 4
Parasitic parameter.Specifically, the parasitic parameter for the high frequency transformer to be measured that signal analysis module analyzes can be sent to display
Module, and shown in display module, facilitate tester to check.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, as shown in fig. 6, display module 7 is also
It can be electrically connected with power module 1,220V alternating current can be converted to 12V DC electricity by power module 1, thus for display mould
Block 7 is powered.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, display module specifically be can wrap
It includes: display screen.Specifically, in interface shown by display screen, as shown in fig. 7, may include main interface title bar 71, mother-tool
Column 72, engineering display field 73, progress display field 74, excitation setting 75, waveform setting 76, waveform analysis 77 and analysis result
78；Wherein, main interface title bar 71 shows " analysis of high frequency transformer parasitic parameter "；Main Toolbar 72 includes engineering 720, saves
721, the buttons such as display 722, editor 723, help 724 and setting 725；Engineering display field 73 is arranged including calibration, excitation is arranged,
The buttons such as waveform setting, waveform analysis and analysis result, square wave can be believed in excitation setting 75 by clicking excitation setting button
Number each parameter be configured, click waveform setting button can waveform be arranged 76 in the received simulation of signal acquisition module
Each parameter of signal is configured, and waveform analysis button is corresponding with waveform analysis 77, analysis results button and analysis result 78
It is corresponding, click calibration setting button can pop up dialog box again, the dialog box may include start, complete and save by
Button, calibration can be started by clicking start button, and after the completion of to be calibrated, clicking completing button can terminate to calibrate, and clicked to save and be pressed
Button can be reserved for calibration data, the calibration data (dead resistance and parasitic capacitance including signal-adjusting module) of preservation can after
Continue in the analysis for signal analysis module, the measurement accuracy of parasitic parameter can be further improved；Progress display field 74 wraps
The buttons such as excitation setting, waveform setting, waveform analysis and analysis result are included, for showing the measurement progress of parasitic parameter；Excitation
Period, the amplitude, duty ratio, rising of the square-wave signal that 75 can be sent to high frequency transformer for setting signal generator are set
Edge and failing edge, waveform setting 76 can be used to setting signal obtain the horizontal axis of the received analog signal of module, the longitudinal axis, the time,
Amplitude and triggering, the waveform after setting can show that the waveform of display is impulse waveform or damping in waveform analysis 77
Waveform (Fig. 7 is for showing damped oscillation waveform), intermediate parameters obtained in analytic process (such as time constant, decline
Subtracting coefficient and frequency of oscillation) it can be shown in the analysis result in waveform analysis 77 below waveform, final analysis knot
Fruit, that is, high frequency transformer parasitic parameter can be shown in analysis result 78.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, as shown in figure 8, can also include:
Signal memory module 8；Signal memory module 8 and signal analysis module 4 are electrically connected, for receiving and storing signal analysis module
The parasitic parameter of 4 high frequency transformers to be measured 6 analyzed.It is available by adjusting each parameter that waveform in display screen is arranged
Different analysis as a result, signal memory module saves these analysis results one by one, can be convenient tester therefrom search it is optimal
As a result.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, as shown in figure 8, signal stores mould
Block 8 can also be electrically connected with power module 1, and 220V alternating current can be converted to 12V DC electricity by power module 1, to be
Signal memory module 8 is powered.
In the specific implementation, in above-mentioned measuring device provided in an embodiment of the present invention, signal memory module specifically can be with
It include: memory；Certainly, it is not limited to this, can also be other devices with store function, it is not limited here.
It in the specific implementation, can be by power adapter, signal in above-mentioned measuring device provided in an embodiment of the present invention
Generator, oscillograph, processor, memory and display screen are integrated into a host, so as to realize the simplification of measuring device,
Measuring device after integration can only show display screen 70, power adapter, signal hair by taking Fig. 9 as an example in host shown in Fig. 9
Raw device, oscillograph, processor and memory are not shown, and specifically, the length L of host can be designed as 48.26cm, width W
It can be designed as 45.2cm, height H can be designed as 17.7cm, and certainly, the size of host is not limited to this, can be according to reality
Border situation is adjusted the size of host, it is not limited here.
Preferably, in above-mentioned measuring device provided in an embodiment of the present invention, as shown in figure 9, can also be in measuring device
Multiple USB (universal serial bus) interfaces 90 of outer surface (such as display screen where plane) setting, there is data-transformation facility,
The access of convenient mouse, keyboard also can connect alternatively, the interface 91 for meeting PS/2 communications protocol and structure also can be set
Mouse, keyboard；Also, connection signal tune can also be used in outer surface (such as plane where display screen) setting of measuring device
Save module in the first connector 56 third connector 92 and for the 4th of the second connector 57 in connection signal adjustment module
Connector 93, third connector 92 and the 4th connector 93 are specifically as follows N-type mother's mouth video-frequency connector, third connector 92 with
Signal generator is electrically connected, and has square wave excitation source signal output function, and the 4th connector 93 is electrically connected with oscillograph, tool
There is radiofrequency signal input function, between the first connector 56 and third connector 92 and the second connector 57 and the 4th connector
It can be attached by client cables 94 between 93；Further, it is also possible to measuring device outer surface (such as display screen where
Plane) setting switch button 95, have the function of starting and closing measuring device；Further, mobile in order to facilitate tester
Measuring device, can also be in outer surface (such as plane where display screen) two handles 96 of setting of measuring device.
It is carried out below by measurement process of the specific example to above-mentioned measuring device provided in an embodiment of the present invention
It is described in detail.By taking measuring device shown in Fig. 9 as an example, power module, signal generating module, signal acquisition module, signal analysis
Module, signal memory module and display module are integrated into a host.The survey of above-mentioned measuring device provided in an embodiment of the present invention
Amount process is as follows:
1, using client cables 94 connect host third connector 92 and signal-adjusting module the first connector 56 with
And the 4th connector 93 of host and the second connector 57 of signal-adjusting module are connected, calibration component is inserted into signal-adjusting module
First port 52, second port 53, in third port 54 and the 4th port 55, calibrated；
2, calibration component is extracted from first port 52, second port 53, third port 54 and the 4th port 55, it will be to be measured
High frequency transformer is inserted into first port 52, second port 53, third port 54 and the 4th port 55；
3, the 0805 packing forms resistance that access resistance value is 5.1 Ω in 0805 encapsulation component slot of signal-adjusting module
As variable resistance 58；
4, the parameter of square-wave signal is arranged in the excitation setting 75 of host to be peak-to-peak value 0.2V, bias 0V, frequency
300Hz, duty ratio 80%, 6.51 μ s of rising edge/failing edge；Wherein, peak-to-peak value and biasing represent amplitude；
5, waveform is set in the waveform setting 76 of host, the waveform after setting is shown in waveform analysis 77, is shown
What is shown is impulse waveform, is analyzed as a result, timeconstantτ1=3.22 × 10-4；
6, the 0805 packing forms resistance that access resistance value is 20 Ω in 0805 encapsulation component slot of signal-adjusting module
As variable resistance 58；
7, step 4 and 5 is repeated, i.e. parameter setting in excitation setting 75 is constant, after waveform is arranged in waveform setting 76
It is shown in waveform analysis 77, it is shown that impulse waveform, is analyzed as a result, timeconstantτ2=2.54 × 10-4,
Show analysis as a result, R in analysis result 78p=Rs=0.55 Ω, Lm=17.94mH, wherein RpFor the parasitism of first side winding
Resistance, RsFor the dead resistance of secondary side winding, LmFor the magnetizing inductance of first side winding；
8, the 0805 packing forms resistance that access resistance value is 0 Ω in 0805 encapsulation component slot of signal-adjusting module is made
For variable resistance 58；
9, host excitation setting 75 in be arranged square-wave signal parameter be peak-to-peak value 5V, biasing 0V, frequency 50kHz,
Duty ratio 50%, rising edge/failing edge 39ns；Wherein, peak-to-peak value and biasing represent amplitude；
10, waveform is set in the waveform setting 76 of host, the waveform after setting is shown in waveform analysis 77, is shown
What is shown is damped oscillation waveform, is analyzed as a result, α1=6.1 × 105, α2=9.82 × 106, ω1=4.07 × 107, ω2=
1.2×108, wherein α1And α2For decay factor, ω1And ω2For frequency of oscillation, show analysis as a result, L in analysis result 78p
=0.62 μ H, Ls=82.25 μ H, Cp=Cs=21.3pF, Cps=9.31pF, wherein LpFor the mutual inductance of first side winding, LsFor
The leakage inductance of secondary side winding, CpFor the parasitic capacitance of first side winding, CsFor the parasitic capacitance of secondary side winding, CpsFor primary side
Parasitic capacitance between winding and secondary side winding.
Above-mentioned measuring device provided in an embodiment of the present invention, comprising: power module, signal generating module, signal acquisition mould
Block, signal analysis module and signal-adjusting module；Signal generating module sends square-wave signal, signal to high frequency transformer to be measured
The analog signal that module receives high frequency transformer response to be measured is obtained, is sent to signal after converting analog signals into digital signal
Analysis module, signal-adjusting module adjust high frequency transformer to be measured and export to the analog signal of signal acquisition module, signal analysis
Digital Signal Analysis obtains the parasitic parameter of high frequency transformer to be measured to module based on the received；Signal generating module is to high frequency to be measured
The pumping signal that transformer is sent is square-wave signal, without carrying out sweep measurement, therefore, pendulous frequency to high frequency transformer to be measured
Greatly reduce, reduces the requirement for measuring device and practical operation, also, high frequency to be measured is adjusted by signal-adjusting module
Transformer is exported to the analog signal of signal acquisition module, so that the different digital signals that signal analysis module can receive are simultaneously
The parasitic parameter of high frequency transformer to be measured is obtained according to different Digital Signal Analysis, which has no vector fitting, with
Existing measurement result is compared dependent on the measurement method of vector fitting, substantially increases the precision of measurement result.
It for those of ordinary skill in the art, can also be right under the premise of not departing from the application concept
The embodiment of the present invention makes several variations and modifications, these belong to the protection scope of the application.
Claims (10)
1. a kind of measuring device of high frequency transformer parasitic parameter characterized by comprising power module, signal generating module,
Signal acquisition module, signal analysis module and signal-adjusting module；Wherein,
The power module is electrical with the signal generating module, the signal acquisition module and the signal analysis module respectively
Connection, for providing power supply to the signal generating module, the signal acquisition module and the signal analysis module；
The signal generating module is electrically connected by signal-adjusting module and high frequency transformer to be measured, is used for the height to be measured
Frequency power transformer sends square-wave signal；
The signal acquisition module is electrically connected by signal-adjusting module and the high frequency transformer to be measured, the signal acquisition
Module and the signal analysis module are electrically connected, for receiving the analog signal of the high frequency transformer response to be measured, by institute
It states after analog signal is converted into digital signal and is sent to the signal analysis module；
The signal-adjusting module is exported for adjusting the high frequency transformer to be measured to the simulation letter of the signal acquisition module
Number；
The signal analysis module, the digital signal sent for receiving the signal acquisition module, according to the number
Signal analyzes the parasitic parameter for obtaining the high frequency transformer to be measured.
2. measuring device as described in claim 1, which is characterized in that the signal-adjusting module specifically includes: substrate, position
In on the substrate copper clad layers, the first port that is electrically connected with the copper clad layers and second port, with described cover copper
The third port and the 4th port, the first connector, the second connector and variable resistance of layer mutually insulated；Wherein,
The variable resistance is connected between the third port and first connector, first connector and the letter
Number occur module be electrically connected；
4th port is electrically connected by second connector and the signal acquisition module；
The first port, the second port, the third port and the 4th port become with the high frequency to be measured respectively
The port of depressor is electrically connected.
3. measuring device as claimed in claim 2, which is characterized in that the signal generating module specifically includes: signal occurs
Device；
The signal generator and first connector are electrically connected.
4. measuring device as claimed in claim 3, which is characterized in that the signal acquisition module specifically includes: oscillograph；
The input terminal of the oscillograph and second connector are electrically connected, the output end of the oscillograph and the signal point
Module is analysed to be electrically connected.
5. measuring device as claimed in claim 4, which is characterized in that the signal analysis module specifically includes: processor；
The output end of the processor and the oscillograph is electrically connected.
6. measuring device as claimed in claim 5, which is characterized in that the power module specifically includes: power adapter；
The power adapter is electrically connected with the signal generator, the oscillograph and the processor respectively.
7. measuring device as claimed in any one of claims 1 to 6, which is characterized in that further include: display module；
The display module and the signal generating module are electrically connected, and are sent for showing and being arranged the signal generating module
The square-wave signal control parameter.
8. measuring device as claimed in claim 7, which is characterized in that the display module and the signal acquisition module are electrical
Connection, for receiving and showing the received analog signal of the signal acquisition module, shows and the analog signal is arranged
Control parameter.
9. measuring device as claimed in claim 7, which is characterized in that the display module and the signal analysis module are electrical
Connection, for receiving and showing the parasitic parameter of the high frequency transformer to be measured that the signal analysis module analyzes.
10. measuring device as claimed in any one of claims 1 to 6, which is characterized in that further include: signal memory module；
The signal memory module and the signal analysis module are electrically connected, for receiving and storing the signal analysis module
The parasitic parameter of the high frequency transformer to be measured analyzed.
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| CN201910139650.7A CN109900983B (en) | 2019-02-26 | 2019-02-26 | Measuring device for parasitic parameters of high-frequency transformer |
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| CN201910139650.7A CN109900983B (en) | 2019-02-26 | 2019-02-26 | Measuring device for parasitic parameters of high-frequency transformer |
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Cited By (1)
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| CN109900983B (en) | 2020-07-07 |
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