CN218350426U - Switch power consumption measuring system of high-frequency high-voltage power diode - Google Patents
Switch power consumption measuring system of high-frequency high-voltage power diode Download PDFInfo
- Publication number
- CN218350426U CN218350426U CN202222284992.8U CN202222284992U CN218350426U CN 218350426 U CN218350426 U CN 218350426U CN 202222284992 U CN202222284992 U CN 202222284992U CN 218350426 U CN218350426 U CN 218350426U
- Authority
- CN
- China
- Prior art keywords
- diode
- frequency
- current
- voltage power
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The utility model relates to a high frequency high voltage power diode's switch consumption measurement system, including high frequency rectifier power supply, direct current constant current power supply, switch, treat high frequency high voltage power diode, voltmeter, forward ampere meter, reverse ampere meter, temperature rise detection portion, pulse detection portion of trying on. The device has the advantages that the device is ingenious in design and reasonable in use, the high-frequency rectifying power supply applies work to the high-frequency high-voltage power diode to be tested to obtain the voltage current in the forward detection circuit, the voltage current in the reverse detection circuit, the heat balance stable temperature Ta when the surface of the high-frequency high-voltage power diode to be tested normally works, and a pulse period t, the diode forward conduction time t1 and the diode reverse cut-off time t2 which are obtained through pulse detection; and then, acting is performed on the high-frequency high-voltage power diode to be tested by simulating a direct-current constant-current power supply, so that the surface temperature of the high-frequency high-voltage power diode to be tested reaches Ta, the voltage and the current of the direct-current power supply at the moment are obtained, and the switching power consumption of the high-frequency high-voltage power diode is obtained.
Description
Technical Field
The utility model relates to a semiconductor field, concretely relates to high frequency high voltage power diode's switch consumption measurement system.
Background
Power consumption is the loss of power, and refers to the difference between the input power and the output power of a device, etc. The circuit generally refers to the heat energy dissipated on the element and the device. Also, an index is an index of all electric devices, and means the amount of energy consumed in a unit time, and the unit is W. The circuit indicates the power of the power supply required by the complete machine or equipment. The current data of the switching power consumption of the high-frequency high-voltage power diode is theoretically estimated by adopting current and voltage waveforms, and no relevant special actual measurement instrument or system exists.
At present, research and development of high-frequency and high-voltage power diodes and reference of application and design of a whole machine have certain limitations. The total power consumption P = PF (forward power consumption) + PR (reverse power consumption) + PT (switching power consumption) of the high-frequency high-voltage power diode;
(1) PT includes two processes of turning-on effect of reverse cut-off rotation and forward turn-on process and turning-off effect of forward turn-on rotation and reverse cut-off process, and in the course of turning-off effect the voltage VR is greater and time trr is longer than turning-on effect, so that PT mainly depends on the latter, PT ≈ jeep- 0 trr vr*irpdt/trr。
(2) Although the current and voltage parameters in the starting process and the closing process are complex, the parameters can be observed through an oscilloscope, the current and voltage waveforms in the two processes cannot be expressed by a determined functional relation due to the difference of chip processes of different manufacturers, and therefore theoretical estimation has limitation.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a high frequency high voltage power diode's switch consumption measurement system, design benefit uses rationally, the switch consumption who reachs high frequency high voltage power diode that can be accurate.
The technical scheme of the utility model:
a switch power consumption measuring system of a high-frequency high-voltage power diode comprises a high-frequency rectifying power supply, a direct-current constant-current power supply, a switch, a high-frequency high-voltage power diode to be tested, a voltmeter, a forward ammeter, a reverse ammeter, a temperature rise detecting part and a pulse detecting part, wherein one side of the anode of the high-frequency high-voltage power diode to be tested is connected with one end of the switch, the other end of the switch can be selectively and controllably connected with the end part of the anode of the high-frequency rectifying power supply or the direct-current constant-current power supply, one side of the cathode of the high-frequency high-voltage power diode to be tested is connected with the end part of the cathode of the high-frequency rectifying power supply or the direct-current constant-current power supply through a first circuit, the forward ammeter is also connected in series on the first circuit, the reverse ammeter is also connected in parallel outside the forward ammeter, the end parts of the two poles of the high-frequency high-voltage power diode to be tested are connected and installed with the voltmeter, and the temperature rise detecting part is fixed on the surface of the high-frequency high-voltage power diode to be tested; one side of the anode of the high-frequency high-voltage power diode to be tested is also connected with a pulse detection part through a signal wire; and a voltage/current display module is also designed on the direct current constant current power supply.
The switch power consumption measuring system of the high-frequency high-voltage power diode further comprises a filter capacitor and a load resistor, wherein two ends of the filter capacitor are connected with the load resistor in parallel, two ends of the filter capacitor and two ends of the load resistor are connected on the first circuit in series, one end of the filter capacitor and one end of the load resistor are connected with one end of a negative electrode of a forward ammeter, and the other end of the filter capacitor and the other end of the load resistor are connected with a negative electrode end of a high-frequency rectifying power supply or a direct-current constant-current power supply.
The temperature rise detection part comprises a temperature sensor, the pulse detection part comprises a pulse detection circuit or an oscilloscope, the switch power consumption measurement system of the high-frequency high-voltage power diode further comprises a PLC control display, and the PLC control display is respectively connected with the temperature sensor, the pulse detection circuit or the oscilloscope, a voltmeter, a forward ammeter, a reverse ammeter and a voltage/current display module through wires.
The front end of the forward current meter is connected with a forward safety diode in series, and the front end of the reverse current meter is connected with a reverse safety diode in series; the forward current meter and the forward safety diode series circuit are connected in parallel with the reverse current meter and the reverse safety diode series circuit.
Two poles of the high-frequency high-voltage power diode to be tested are pre-installed on the circuit board, one end of the circuit board is connected with the switch, and the other end of the circuit board is connected with the positive end of the forward ammeter.
The utility model has the advantages of ingenious design and reasonable use, works on the high-frequency high-voltage power diode to be tested by simulating the high-frequency rectification power supply, obtains the voltage and the current (VF and IF) in the forward detection circuit, the voltage and the current (VR and IR) in the reverse detection circuit, the constant temperature (Ta) when the surface of the high-frequency high-voltage power diode to be tested normally works, and obtains a pulse period t, the forward conduction time t1 of the diode and the reverse cut-off time t2 of the diode by pulse detection; and then, the analog direct-current constant-current power supply applies work to the high-frequency high-voltage power diode to be tested, the current is adjusted to enable the surface temperature of the high-frequency high-voltage power diode to be tested to reach the thermal equilibrium stable temperature Ta, the voltage U and the current Ifa of the direct-current power supply at the moment are obtained, and the switching power consumption of the high-frequency high-voltage power diode can be accurately obtained.
Drawings
Fig. 1 is a schematic diagram of the circuit system of the present invention.
Detailed Description
Referring to the attached figure 1, a switch power consumption measuring system of a high-frequency high-voltage power diode comprises a high-frequency rectifying power supply 1, a direct-current constant-current power supply 2, a switch 3, a high-frequency high-voltage power diode 4 to be tested, a voltmeter 5, a forward ammeter 7, a reverse ammeter 9, a temperature rise detecting part 10 and a pulse detecting part 11, wherein one side of the positive pole of the high-frequency high-voltage power diode 4 to be tested is connected with one end of the switch 3, the other end of the switch 3 can be selectively and controllably connected with the positive pole end part of the high-frequency rectifying power supply 1 or the direct-current constant-current power supply 2, one side of the negative pole of the high-frequency high-voltage power diode 4 to be tested is connected with the negative pole end part of the high-frequency rectifying power supply 1 or the direct-current constant-current power supply 2 through a first line, the forward ammeter 7 is further connected in series on the first line, the outer side of the forward ammeter 7 is further connected in parallel, the two pole end parts of the high-frequency high-voltage power diode 4 to be tested are connected with the voltmeter 5, and the temperature rise detecting part 10 is fixed on the surface of the high-frequency high-voltage power diode 4 to be tested; the positive electrode side of the high-frequency high-voltage power diode 4 to be tested is also connected with a pulse detection part 11 through a signal wire; a voltage/current display module 12 is also designed on the direct current constant current power supply 2.
The power consumption measuring system for the switch 3 of the high-frequency high-voltage power diode further comprises a filter capacitor 13 and a load resistor 14, two ends of the filter capacitor 13 are connected with the load resistor 14 in parallel, two ends of the filter capacitor 13 and two ends of the load resistor 14 are connected on the first circuit in series, one end of the filter capacitor 13 and one end of the load resistor 14 are connected with one end of the negative electrode of the forward ammeter 7, and the other end of the filter capacitor 13 and the other end of the load resistor 14 are connected with the end of the negative electrode of the high-frequency rectifying power supply 1 or the direct-current constant-current power supply 2.
The temperature rise detection part 10 comprises a temperature sensor, the pulse detection part 11 comprises a pulse detection circuit or an oscilloscope, the power consumption measurement system of the switch 3 of the high-frequency high-voltage power diode further comprises a PLC control display 15, and the PLC control display 15 is respectively connected with the temperature sensor, the pulse detection circuit or the oscilloscope, the voltmeter 5, the forward ammeter 7, the reverse ammeter 9 and the voltage/current display module 12 through leads.
The front end of the forward ammeter 7 is connected with a forward safety diode 71 in series, and the front end of the reverse ammeter 9 is connected with a reverse safety diode 91 in series; the forward ammeter 7 and forward safety diode 71 series circuit is connected in parallel with the reverse ammeter 9 and reverse safety diode series circuit.
Two poles of the high-frequency high-voltage power diode 4 to be tested are pre-installed on a circuit board 6, one end of the circuit board 6 is connected with the switch 3, and the other end of the circuit board 6 is connected with the positive end part of the forward ammeter 7.
The utility model discloses during the use, design a measurement system, avoid the unsafe estimation of complicated waveform, measure and contrast the measuring method through online (in experimental circuit or the complete machine circuit board), record PT.
The total power consumption P = PF (forward power consumption) + PR (reverse power consumption) + PT (switching power consumption) of the high-frequency high-voltage power diode; the specific description is as follows:
setting: the high-frequency pulse period is t, the forward conduction period of the diode is t1, and the reverse cut-off period of the diode is t2.
(1) Measurement of PF and PT
PF = VF IF t1/t, i.e. diode forward voltage drop forward conduction current forward duty cycle;
PR = VR IR t2/t, i.e. reverse voltage applied across the diode, reverse leakage current, reverse duty cycle;
sampling and measuring forward and reverse working parameters VF, IF, VR, IR, t1, t2 and t of a high-frequency high-voltage power diode in a high-frequency rectifying circuit (an experimental circuit or a complete machine circuit). The method comprises the steps that a high-frequency rectifying power supply is simulated to apply work to a high-frequency high-voltage power diode to be tested, so that voltage and current (VF and IF) in a forward detection circuit, voltage and current (VR and IR) in a reverse detection circuit, constant temperature (Ta) when the surface of the high-frequency high-voltage power diode to be tested normally works, a pulse period t, diode forward conduction time t1 and diode reverse cut-off time t2 obtained by a pulse detection circuit or an oscilloscope are obtained; the data can be directly read out or transmitted to a PLC control display through signals;
(2) Since PT cannot be directly measured, the total power consumption P cannot be directly measured or calculated (although a high-frequency rectifying circuit on the market includes an inductive loop composed of a rectifying diode, a filter capacitor, a transformer, a load, etc., the total power of the high-frequency output of the circuit can be measured, but the state of the circuit may be changed due to the access of a complicated sensor, so that it is very difficult to measure the power consumption or the loss of each component, especially a nonlinear device such as a high-frequency high-voltage power diode.
(3) However, the total power consumption P can cause the high-frequency high-voltage power diode chip to generate heat to generate temperature, and the temperature (temperature rise) of the surface (the middle position of the tube body corresponding to the core taking piece) of the packaging body (tube body) reaches the thermal equilibrium stable temperature Ta. Therefore, after the high-frequency high-voltage power diode is in thermal equilibrium, the total power consumption P and the thermal equilibrium stable temperature Ta have a corresponding deterministic relationship.
(4) A temperature sensor (which can be a thermocouple or an infrared non-contact measurement mode but has large error and poor repeatability) is fixed on the surface of the middle part of a tube body of the high-frequency high-voltage power diode to be tested and is tightly attached to the surface of the middle part of the tube body, and the heat balance stable temperature Ta of the high-frequency high-voltage power diode can be measured when the heat balance temperature (namely the temperature is stable and unchanged).
(5) In addition, a forward direct current constant current power supply is applied to the sample, the high-frequency high-voltage power diode to be tested generates power consumption, and data of P is obtained through the heat balance stable temperature Ta → P reverse direction of the middle surface of the tube body of the high-frequency high-voltage power diode to be tested. The specific method comprises the following steps:
the method comprises the steps of disconnecting a circuit high-frequency rectification input signal source by a control switch, connecting an adjustable forward direct current constant current power supply to welding points on circuit boards at two ends of a high-frequency high-voltage power diode to be tested (a constant current source cannot be connected to pins of the direct high-frequency high-voltage power diode by clips and wires to avoid extra heat dissipation caused by the constant current source and influence on measurement accuracy), enabling the high-frequency high-voltage power diode to enter a forward direct current conducting state by adjusting voltage U and current IFx of the direct current constant current source, enabling a temperature measuring thermocouple in the middle of a tube body to measure temperature rise to be Tx at the moment, continuously adjusting current of the constant current source until the temperature rise after the high-frequency high-voltage power diode is subjected to thermal balance is equal to Ta, recording voltage U and current Ifa of the direct current constant current source at the moment, and enabling output power = U and Ifa of the direct current constant current power supply at the moment to be equivalent to total power consumption P of the high-frequency high-voltage power diode in a high-frequency working state.
(6) Through the measurement, the detected specific data (t, t1, t2, VF, IF, VR, IR, ta, U, IFa) are sent to a PLC control display, and the switch power consumption PT (PT = P-PF-PR = U, ifa-VF IF, t 1/t-VR IR, t 2) can be calculated. PT is as follows: the working conditions are as follows: the pulse period is t, the forward conduction period of the diode is t1, and the reverse cut-off period of the diode is t2; and when the temperature of the middle part of the tube body rises to Ta, the switching power consumption of the high-frequency high-voltage power diode to be tested is reduced.
The utility model discloses can accurately and directly perceivedly detect and show high frequency high voltage power diode's switch consumption and other relevant working parameter. Accurate data is provided for research and development and application.
Claims (5)
1. A switch power consumption measuring system of a high-frequency high-voltage power diode is characterized by comprising a high-frequency rectifying power supply, a direct-current constant-current power supply, a switch, a high-frequency high-voltage power diode to be tested, a voltmeter, a forward ammeter, a reverse ammeter, a temperature rise detecting part and a pulse detecting part, wherein one side of the positive pole of the high-frequency high-voltage power diode to be tested is connected with one end of the switch, the other end of the switch can be selectively and controllably connected with the positive pole end part of the high-frequency rectifying power supply or the direct-current constant-current power supply, one side of the negative pole of the high-frequency high-voltage power diode to be tested is connected with the negative pole end part of the high-frequency rectifying power supply or the direct-current constant-current power supply through a first circuit, the forward ammeter is also connected in series with the first circuit, the outer side of the forward ammeter is also connected in parallel, the two pole end parts of the high-frequency high-voltage power diode to be tested are connected with the voltmeter, and the temperature rise detecting part is fixed on the surface of the high-frequency high-voltage power diode to be tested; one side of the anode of the high-frequency high-voltage power diode to be tested is also connected with a pulse detection part through a signal wire; and a voltage/current display module is also designed on the direct current constant current power supply.
2. The system according to claim 1, further comprising a filter capacitor and a load resistor, wherein two ends of the filter capacitor are connected in parallel with the load resistor, two ends of the filter capacitor and two ends of the load resistor are connected in series on the first line, one end of the filter capacitor and one end of the load resistor are connected to one end of a negative electrode of the forward ammeter, and the other end of the filter capacitor and the other end of the load resistor are connected to a negative electrode of the high-frequency rectifying power supply or the dc constant current power supply.
3. The system for measuring the switching power consumption of the high-frequency high-voltage power diode according to claim 1 or 2, wherein the temperature rise detection part comprises a temperature sensor, the pulse detection part comprises a pulse detection circuit or an oscilloscope, and the system for measuring the switching power consumption of the high-frequency high-voltage power diode further comprises a PLC control display, wherein the PLC control display is respectively connected with the temperature sensor, the pulse detection circuit or the oscilloscope, the voltmeter, the forward ammeter, the reverse ammeter and the voltage/current display module through wires.
4. The system for measuring the switching power consumption of the high-frequency high-voltage power diode according to claim 1, wherein a forward safety diode is connected in series with the front end of the forward current meter, and a reverse safety diode is connected in series with the front end of the reverse current meter; the forward ammeter and the forward safety diode series circuit are connected in parallel with the reverse ammeter and the reverse safety diode series circuit.
5. The system according to claim 1, wherein two poles of the high-frequency high-voltage power diode to be tested are pre-mounted on a circuit board, one end of the circuit board is connected to the switch, and the other end of the circuit board is connected to the positive end of the forward ammeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222284992.8U CN218350426U (en) | 2022-08-30 | 2022-08-30 | Switch power consumption measuring system of high-frequency high-voltage power diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222284992.8U CN218350426U (en) | 2022-08-30 | 2022-08-30 | Switch power consumption measuring system of high-frequency high-voltage power diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218350426U true CN218350426U (en) | 2023-01-20 |
Family
ID=84916015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222284992.8U Active CN218350426U (en) | 2022-08-30 | 2022-08-30 | Switch power consumption measuring system of high-frequency high-voltage power diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218350426U (en) |
-
2022
- 2022-08-30 CN CN202222284992.8U patent/CN218350426U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106969851B (en) | On-line detection device for measuring junction temperature of IGBT power module based on saturation voltage drop | |
| CN104458799A (en) | Method and device for measuring transient thermal resistance of IGBT module | |
| EP2615467A1 (en) | System and method for monitoring in real time the operating state of an IGBT device | |
| CN106771945A (en) | A kind of IGBT junction temperatures on-line monitoring method and its measuring circuit | |
| CN106875619B (en) | Combined type electric fire monitoring detector | |
| CN105699897B (en) | Motor rotation blockage winding measuring device | |
| CN201141894Y (en) | Micro-resistance measurement system of high-voltage switch assembly | |
| CN100531474C (en) | Heater power control circuit and burn-in apparatus using the same | |
| KR100957623B1 (en) | Ac loss measurement device of high temperature superconductor | |
| JPH10300811A (en) | Measuring method of led dc thermal resistance, and measuring device thereof | |
| CN107493092B (en) | Large pulse current generating device and control method thereof | |
| CN218350426U (en) | Switch power consumption measuring system of high-frequency high-voltage power diode | |
| CN110208596A (en) | Load current monitoring circuit and method | |
| JPH06281693A (en) | Measuring method for thermal resistance of semiconductor device | |
| CN203241490U (en) | Intelligent temperature rise testing system used for electrical products | |
| CN104483041A (en) | Temperature rise measurement method and device of coil winding | |
| CN108132375B (en) | Direct current measuring device with feedforward and measuring method | |
| CN115327335A (en) | Method for measuring switching power consumption of high-frequency high-voltage power diode | |
| CN103293362B (en) | DC ammeter and multimeter and apply the measuring method of this reometer or multimeter | |
| CN216209830U (en) | Temperature rise test integrated device for current transformer | |
| CN215728641U (en) | Dynamic and static test circuit for synchronous rectifier diode | |
| CN115856560A (en) | Method and device for measuring parasitic parameters of source electrode and drain current of power device | |
| CN211785914U (en) | MOSFET internal resistance detection circuit | |
| CN103364739A (en) | Method for testing node temperature rise of switch tube in switch power source | |
| KR101480439B1 (en) | Method for measuring of junction temperature of semiconductor device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |