Temperature test system for integrated circuit

Abstract

The utility model discloses a temperature test system used for an integrated circuit. The temperature test system comprises a DC power supply module used for multi-port power supply output, a power supply terminal used for providing a power supply for the DC power supply module, a fuse R1 connected in series between the DC power supply module and the power supply terminal, and a temperature monitoring module used for detecting the temperature of the fuse. The temperature generated by the fuse R1 is detected through the thermistor NT, the internal resistance value of the thermistor NT is changed according to the change of the temperature, then different voltage values are output, and the potentiometer TR1, the potentiometer TR2 and the potentiometer TR3 realize the conduction and cut-off of the voltage according to the output of the different voltage values of the thermistor NT. The temperature of the fuse R1 is adjusted, the power supply path of the DC power supply module is controlled according to the temperature change of the fuse R1, the resistance value of the potentiometer TR1, the resistance value of the potentiometer TR2 and the resistance value of the potentiometer TR3 are adjusted, the output voltage of the thermistor NT is conducted, the DC power supply module is made to be in different voltage values at different temperatures, and safe operation of the DC power supply module is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature monitoring of DC power supply modules, in particular to a temperature test system for integrated circuits. Background Art

[0002] The DC power module converts the input voltage into the required output voltage. The working principle of the DC power module is to first convert the input voltage into the transformer output voltage, then filter it through the filter capacitor, then the control circuit converts the filtered voltage into the output voltage, and finally adjusts the amplitude and phase of the output voltage through the adjustment circuit.

[0003] The DC power module needs to provide output voltages of different values ​​during use. When providing voltages of different values, the DC power module will generate a certain temperature. If the temperature exceeds the setting range of the DC power module, the output voltage will fluctuate, thereby affecting the power stability of the connected equipment. Therefore, it is necessary to test the temperature of the DC power module or monitor the working DC power module to ensure that the DC power module can obtain output regulation under temperature changes. Utility Model Content

[0004] Purpose of the utility model: to provide a temperature test system for integrated circuits to solve the above-mentioned problems existing in the prior art.

[0005] Technical solution: A temperature test system for integrated circuits, comprising:

[0006] A DC power supply module for multi-port power output, a power supply end for providing power to the DC power supply module, a fuse R1 connected in series between the DC power supply module and the power supply end, and a temperature monitoring module for detecting the temperature of the fuse;

[0007] The temperature monitoring module includes: a temperature monitoring unit, which detects the temperature generated by the fuse R1 through the thermistor NT and controls the internal resistance of the thermistor NT according to the change of temperature;

[0008] The resistance adjustment unit controls the transmission of the voltage when the thermistor NT is turned on by adjusting the different resistance values ​​of the potentiometers TR1, TR2 and TR3.

[0009] The trigger unit controls the transmission path of the power supply through the thyristor U1, the thyristor U2 and the thyristor U3, and provides a step-down voltage value to the switching DC power supply module;

[0010] The control unit controls the switching of the connection path between the power supply end and the DC power supply module by triggering the relays T1, T2 and T3.

[0011] In a further embodiment, the thermistor NT in the temperature monitoring unit is attached to the heating part of the fuse R1, and one end of the thermistor NT is connected to the positive end of the power supply end; one end of the fuse R1 is connected to one end of the normally closed contact S31, and the other end of the fuse R1 is connected to one end of the normally closed contact S11.

[0012] In a further embodiment, the resistance adjustment unit includes a potentiometer TR1, a potentiometer TR2, a potentiometer TR3, a diode D1, a diode D2 and a diode D3, wherein the pin 1 of the potentiometer TR1 is respectively connected to the pin 1 of the potentiometer TR2, the pin 1 of the potentiometer TR3 and the other end of the thermistor NT, the pin 2 and pin 3 of the potentiometer TR1 are connected to the positive end of the diode D1, the negative end of the diode D1 is respectively connected to the negative end of the diode D2, the negative end of the diode D3 and one end of the fuse R1, the positive end of the diode D2 is connected to the pin 2 and pin 3 of the potentiometer TR2, and the positive end of the diode D3 is connected to the pin 2 and pin 3 of the potentiometer TR3.

[0013] In a further embodiment, the trigger unit includes a normally closed contact S2, a thyristor U1, a thyristor U2, a thyristor U3, a normally closed contact S3, a relay T1, a relay T2 and a relay T3, wherein one end of the normally closed contact S2 is connected to the positive end of the diode D1, the other end of the normally closed contact S2 is connected to the pin 1 of the thyristor U1, the positive end of the thyristor U1 is respectively connected to the positive end of the thyristor U2, the positive end of the thyristor U3 and the positive end of the power supply end, and the thyristor U 1 negative terminal is connected to one end of the relay T1, the other end of the relay T1 is respectively connected to one end of the relay T2, one end of the relay T3 and the ground wire GND, the other end of the relay T2 is connected to the negative terminal of the thyristor U2, the other end of the relay T3 is connected to the negative terminal of the thyristor U3, one end of the normally closed contact S3 is connected to the positive terminal of the diode D2, the other end of the normally closed contact S3 is connected to the pin 1 of the thyristor U2, and the pin 1 of the thyristor U3 is connected to the positive terminal of the diode D3.

[0014] In a further embodiment, the control unit includes a normally open contact S21, a normally closed contact S31, a normally closed contact S11 and a normally closed contact S22, wherein the other end of the normally closed contact S31 is connected to the positive end of the power supply end, the other end of the normally closed contact S11 is connected to one end of the normally closed contact S22, the other end of the normally closed contact S22 is connected to the first positive power supply end of the DC power supply module, one end of the normally open contact S1 is respectively connected to one end of the fuse R1 and one end of the normally open contact S21, the other end of the normally open contact S21 is connected to the third positive power supply end of the DC power supply module, the other end of the normally open contact S1 is connected to the second positive power supply end of the DC power supply module, and the negative end of the DC power supply module is connected to the negative end of the power supply end.

[0015] In a further embodiment, the potentiometer TR1, potentiometer TR2 and potentiometer TR3 adjust different resistance values ​​according to the temperature change range of the thermistor NT, the relay T1 is energized, the normally closed contact S11 is controlled to be disconnected, and the normally open contact S1 is closed, the relay T2 is energized, the normally closed contact S22 and the normally closed contact S2 are controlled to be disconnected, and the normally open contact S21 is closed, the relay T3 is energized, and the normally closed contact S3 and the normally closed contact S31 are controlled to be disconnected.

[0016] Beneficial effect: The utility model detects the temperature generated by the fuse R1 through the thermistor NT, changes the internal resistance of the thermistor NT according to the change of temperature, and then outputs different voltage values, and the potentiometers TR1, TR2 and TR3 realize the conduction and cutoff of the voltage according to the output of the different voltage values ​​of the thermistor NT, and then control the power supply path of the DC power module according to the temperature change of the fuse R1, and adjust the resistance of the potentiometers TR1, TR2 and TR3, and turn on the output voltage of the thermistor NT, so that the DC power module is at different voltage values ​​at different temperatures, thereby ensuring the safe operation of the DC power module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural circuit diagram of the utility model. DETAILED DESCRIPTION

[0018] like Figure 1 As shown, a temperature test system for integrated circuits comprises:

[0019] A DC power supply module for multi-port power output, a power supply end for providing power to the DC power supply module, a fuse R1 connected in series between the DC power supply module and the power supply end, and a temperature monitoring module for detecting the temperature of the fuse;

[0020] The temperature monitoring module includes: a temperature monitoring unit, wherein the thermistor NT in the temperature monitoring unit is attached to the heating part of the fuse R1, and one end of the thermistor NT is connected to the positive end of the power supply end; one end of the fuse R1 is connected to one end of the normally closed contact S31, and the other end of the fuse R1 is connected to one end of the normally closed contact S11, and the thermistor NT detects the temperature generated by the fuse R1, and controls the internal resistance of the thermistor NT according to the change of temperature;

[0021] The resistance adjusting unit includes a potentiometer TR1, a potentiometer TR2, a potentiometer TR3, a diode D1, a diode D2 and a diode D3.

[0022] The pin 1 of the potentiometer TR1 is respectively connected to the pin 1 of the potentiometer TR2, the pin 1 of the potentiometer TR3 and the other end of the thermistor NT, the pin 2 and pin 3 of the potentiometer TR1 are connected to the positive end of the diode D1, the negative end of the diode D1 is respectively connected to the negative end of the diode D2, the negative end of the diode D3 and one end of the fuse R1, the positive end of the diode D2 is connected to the pin 2 and pin 3 of the potentiometer TR2, and the positive end of the diode D3 is connected to the pin 2 and pin 3 of the potentiometer TR3. The different resistance values ​​of the potentiometers TR1, TR2 and TR3 are adjusted to control the transmission of the voltage when the thermistor NT is turned on.

[0023] A trigger unit, wherein the trigger unit includes a normally closed contact S2, a thyristor U1, a thyristor U2, a thyristor U3, a normally closed contact S3, a relay T1, a relay T2 and a relay T3.

[0024] One end of the normally closed contact S2 is connected to the positive terminal of the diode D1, and the other end of the normally closed contact S2 is connected to the pin 1 of the thyristor U1. The positive terminal of the thyristor U1 is respectively connected to the positive terminal of the thyristor U2, the positive terminal of the thyristor U3 and the positive terminal of the power supply end, the negative terminal of the thyristor U1 is connected to one end of the relay T1, and the other end of the relay T1 is respectively connected to one end of the relay T2, one end of the relay T3 and the ground wire GND, the other end of the relay T2 is connected to the negative terminal of the thyristor U2, and the other end of the relay T3 is connected to the negative terminal of the thyristor U3. One end of the normally closed contact S3 is connected to the positive terminal of the diode D2, and the other end of the normally closed contact S3 is connected to the pin 1 of the thyristor U2. The pin 1 of the thyristor U3 is connected to the positive terminal of the diode D3. The thyristors U1, U2 and U3 control the transmission path of the power supply and provide a step-down voltage value to the switching DC power supply module;

[0025] A control unit includes a normally open contact S21, a normally closed contact S31, a normally closed contact S11 and a normally closed contact S22.

[0026] The other end of the normally closed contact S31 is connected to the positive end of the power supply end, the other end of the normally closed contact S11 is connected to one end of the normally closed contact S22, the other end of the normally closed contact S22 is connected to the first positive power supply end of the DC power supply module, one end of the normally open contact S1 is respectively connected to one end of the fuse R1 and one end of the normally open contact S21, the other end of the normally open contact S21 is connected to the third positive power supply end of the DC power supply module, the other end of the normally open contact S1 is connected to the second positive power supply end of the DC power supply module, the negative end of the DC power supply module is connected to the negative end of the power supply end, and the triggering of relays T1, T2 and T3 controls the switching of the connection path between the power supply end and the DC power supply module.

[0027] Working principle: First, the power supply end provides power to the DC power module through the fuse R1, and the thermistor NT detects the temperature generated by the fuse R1, and then obtains the temperature state of the DC power module under operation. When the temperature meets the set value, the thermistor NT is cut off, so that the DC power module is in normal operation;

[0028] When thermistor NT detects that the temperature of fuse R1 exceeds the small range setting value, thermistor NT outputs a small voltage, and the small resistance adjusted by potentiometer TR1 is turned on. At this time, thyristor U1 obtains a trigger voltage, so that relay T1 is energized, normally closed contact S11 is disconnected, and normally open contact S1 is closed. At this time, DC obtains the stepped-down voltage, so that the DC power module operates at low power consumption;

[0029] When thermistor NT detects that the temperature of fuse R1 exceeds the small range and does not exceed the large range setting value, thermistor NT outputs a medium voltage, and the potentiometer TR2 adjusts the intermediate resistance to conduct. At this time, thyristor U2 obtains a trigger voltage, which energizes relay T2, disconnects the normally closed contact S2 and the normally open contact S22, and closes the normally open contact S21. At this time, the DC power module obtains the stepped-down voltage.

[0030] When thermistor NT detects that the temperature of fuse R1 exceeds the large range setting value, thermistor NT outputs a large voltage, and the potentiometer TR2 adjusts the large resistance to conduct. At this time, thyristor U3 obtains a trigger voltage, energizing relay T3, and the normally closed contact S3 and the normally open contact S31 are disconnected, and the DC power module is turned off.

[0031] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A temperature test system for integrated circuits, comprising: A DC power supply module for multi-port power output, a power supply end for providing power to the DC power supply module, a fuse R1 connected in series between the DC power supply module and the power supply end, and a temperature monitoring module for detecting the temperature of the fuse; Characterized in that the temperature monitoring module comprises: a temperature monitoring unit, which detects the temperature generated by the fuse R1 through the thermistor NT and controls the internal resistance of the thermistor NT according to the change of temperature; The resistance adjustment unit controls the transmission of the voltage when the thermistor NT is turned on by adjusting the different resistance values ​​of the potentiometers TR1, TR2 and TR3. The trigger unit controls the transmission path of the power supply through the thyristor U1, the thyristor U2 and the thyristor U3, and provides a step-down voltage value to the switching DC power supply module; The control unit controls the switching of the connection path between the power supply end and the DC power supply module by triggering the relays T1, T2 and T3.

2. A temperature test system for integrated circuits according to claim 1, characterized in that: The thermistor NT in the temperature monitoring unit is attached to the heating part of the fuse R1, and one end of the thermistor NT is connected to the positive end of the power supply end; one end of the fuse R1 is connected to one end of the normally closed contact S31, and the other end of the fuse R1 is connected to one end of the normally closed contact S11.

3. A temperature test system for integrated circuits according to claim 1, characterized in that: The resistance adjustment unit includes a potentiometer TR1, a potentiometer TR2, a potentiometer TR3, a diode D1, a diode D2 and a diode D3, wherein the pin 1 of the potentiometer TR1 is respectively connected to the pin 1 of the potentiometer TR2, the pin 1 of the potentiometer TR3 and the other end of the thermistor NT, the pin 2 and the pin 3 of the potentiometer TR1 are connected to the positive end of the diode D1, the negative end of the diode D1 is respectively connected to the negative end of the diode D2, the negative end of the diode D3 and one end of the fuse R1, the positive end of the diode D2 is connected to the pin 2 and the pin 3 of the potentiometer TR2, and the positive end of the diode D3 is connected to the pin 2 and the pin 3 of the potentiometer TR3.

4. A temperature test system for integrated circuits according to claim 1, characterized in that: The trigger unit includes a normally closed contact S2, a thyristor U1, a thyristor U2, a thyristor U3, a normally closed contact S3, a relay T1, a relay T2 and a relay T3, wherein one end of the normally closed contact S2 is connected to the positive end of the diode D1, the other end of the normally closed contact S2 is connected to the pin 1 of the thyristor U1, the positive end of the thyristor U1 is respectively connected to the positive end of the thyristor U2, the positive end of the thyristor U3 and the positive end of the power supply end, the negative end of the thyristor U1 is connected to one end of the relay T1, the other end of the relay T1 is respectively connected to one end of the relay T2, one end of the relay T3 and the ground wire GND, the other end of the relay T2 is connected to the negative end of the thyristor U2, the other end of the relay T3 is connected to the negative end of the thyristor U3, one end of the normally closed contact S3 is connected to the positive end of the diode D2, the other end of the normally closed contact S3 is connected to the pin 1 of the thyristor U2, and the pin 1 of the thyristor U3 is connected to the positive end of the diode D3.

5. A temperature test system for integrated circuits according to claim 1, characterized in that: The control unit includes a normally open contact S21, a normally closed contact S31, a normally closed contact S11 and a normally closed contact S22, wherein the other end of the normally closed contact S31 is connected to the positive end of the power supply end, the other end of the normally closed contact S11 is connected to one end of the normally closed contact S22, the other end of the normally closed contact S22 is connected to the first positive power supply end of the DC power supply module, one end of the normally open contact S1 is respectively connected to one end of the fuse R1 and one end of the normally open contact S21, the other end of the normally open contact S21 is connected to the third positive power supply end of the DC power supply module, the other end of the normally open contact S1 is connected to the second positive power supply end of the DC power supply module, and the negative end of the DC power supply module is connected to the negative end of the power supply end.

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