CN216310068U - Clamp for verifying hot-switching power supply chip - Google Patents
Clamp for verifying hot-switching power supply chip Download PDFInfo
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- CN216310068U CN216310068U CN202122761401.7U CN202122761401U CN216310068U CN 216310068 U CN216310068 U CN 216310068U CN 202122761401 U CN202122761401 U CN 202122761401U CN 216310068 U CN216310068 U CN 216310068U
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Abstract
A jig for verifying a hot-switch power supply chip. The product comprises a circuit board PCB, a power chip holder fixed on the circuit board PCB and a capacitor C1, wherein the power chip holder is provided with 1 pin, 2 pin, 3 pin, 4 pin, 5 pin, 6 pin, 7 pin and 8 pin, the 1 pin is connected with a resistor R5, the 2 pin is connected with a resistor R3 and a resistor R4, the resistor R4 is connected with a resistor R2, the 2 pin is connected with a MOS tube Q1, the MOS tube Q1 is connected with a resistor R1 and a resistor R2, and the resistor R2 is connected with the capacitor C1; the 3-pin connection capacitor C2, the 8-pin connection capacitor C3, the capacitor C3 in parallel with the capacitor C4, the capacitor C4 in connection with the resistor R6, the 7-pin connection MOS tube Q2, the MOS tube Q2 in connection with the capacitor C5, the capacitor C5 in parallel with the capacitor C6, the 6-pin connection resistor R7, and the resistor R7 in connection with the MOS tube Q2. The utility model is used for verifying the capability of the hot switching power supply chip whether to work normally or not and the circuit whether to work normally or not.
Description
The technical field is as follows:
the utility model relates to a clamp for verifying a hot-switching power supply chip.
Background art:
the hot switching power supply is characterized in that when the 12V power supply is switched off suddenly under the condition of being in place, and then the 12V power supply is switched on again, in order to verify whether the function of the hot switching power supply which is switched on and off repeatedly is effective, the circuit needs to be verified.
The utility model content is as follows:
the utility model aims to provide a clamp for verifying a hot-switching power supply chip, which is convenient to operate, low in cost and high in cost performance, and a clamp circuit is also convenient to manufacture.
The above purpose is realized by the following technical scheme:
a clamp for verifying a hot-switching power supply chip comprises a circuit board PCB, wherein a power supply chip holder is fixed on the circuit board PCB, the power supply chip holder is provided with a 1 pin, a 2 pin, a 3 pin, a 4 pin, a 5 pin, a 6 pin, a 7 pin and an 8 pin, the 1 pin is connected with a resistor R5, a resistor R5 is connected with a 3.3V external power supply VCC, the 2 pin is connected with a resistor R3 and a resistor R4, the resistor R3 is connected with a 12V external power supply VCC, a resistor R4 is connected with a resistor R2, the 2 pin is connected with an MOS tube Q1, the MOS tube Q1 is connected with a resistor R1 and a resistor R2, the resistor R2 is connected with a capacitor C1, and the resistor R1 and the capacitor C1 are both connected with a control signal cont resistor RolA of the MOS tube Q1; 3 pin connection electric capacity C2, 8 pin connection electric capacity C3 and 12V external power VCC, electric capacity C3 parallel connection electric capacity C4, electric capacity C4 connecting resistance R6, 7 pin connection MOS pipe Q2, MOS pipe Q2 connect electric capacity C5, electric capacity C5 parallel connection electric capacity C6, 6 pin connecting resistance R7, resistance R7 connect MOS pipe Q2, 5 pin connection MOS pipe Q2.
In the clamp for verifying the hot-switching power supply chip, the resistor R and the capacitor C are both grounded, and the capacitor C6 is grounded.
Has the advantages that:
1. the utility model improves the stability of the function of the hot switching power supply chip, and the clamp plate can be used for verifying whether the function of the hot switching power supply chip can work normally.
2. According to the utility model, the RolA signal of the cont resistor is used for controlling the Q1 to be repeatedly switched on and off, whether the 12V power supply output can be realized by the hot switching power supply chip is observed, the function of switching the power supply chip can be realized, the cost is low, and the operation is convenient.
3. The utility model is easy to realize, can verify whether the hot switching power supply chip can normally work or not, has low cost and has high cost performance.
Description of the drawings:
fig. 1 is a circuit schematic diagram of the product.
In the circuit schematic diagram, 1 pin, 2 pins, 3 pins and 4 pins are arranged on the left side of the power chip base from top to bottom, and 5 pins, 6 pins, 7 pins and 8 pins are arranged on the right side of the power chip base from bottom to top.
The specific implementation mode is as follows:
the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
Example 1:
a clamp for verifying a hot-switching power supply chip comprises a circuit board PCB, wherein a power supply chip holder is fixed on the circuit board PCB, the power supply chip holder is provided with a 1 pin, a 2 pin, a 3 pin, a 4 pin, a 5 pin, a 6 pin, a 7 pin and an 8 pin, the 1 pin is connected with a resistor R5, a resistor R5 is connected with a 3.3V external power supply VCC, the 2 pin is connected with a resistor R3 and a resistor R4, the resistor R3 is connected with a 12V external power supply VCC, a resistor R4 is connected with a resistor R2, the 2 pin is connected with an MOS tube Q1, the MOS tube Q1 is connected with a resistor R1 and a resistor R2, the resistor R2 is connected with a capacitor C1, and the resistor R1 and the capacitor C1 are both connected with a control signal cont resistor RolA of the MOS tube Q1; 3 pin connection electric capacity C2, 8 pin connection electric capacity C3 and 12V external power VCC, electric capacity C3 parallel connection electric capacity C4, electric capacity C4 connecting resistance R6, 7 pin connection MOS pipe Q2, MOS pipe Q2 connect electric capacity C5, electric capacity C5 parallel connection electric capacity C6, 6 pin connecting resistance R7, resistance R7 connect MOS pipe Q2, 5 pin connection MOS pipe Q2.
The resistor R and the capacitor C are both grounded, and the capacitor C6 is grounded.
Example 2:
in the fixture for verifying a hot-switch power supply chip in embodiment 1, the 12V external power VCC and the 3.3V external power VCC are powered by external power supplies to provide input voltage, where the 12V external power VCC is used for a power supply pin of the power supply chip, and the 3.3V external power VCC is used as a signal pull-up voltage for processing.
The power supply chip socket is 8 pins for soldering a chip to be tested thereon, and currently, the tps24701 chip of the TI company is used for verification, and the pins correspond to the following: the pin 1 is PGb, power-on indication signal, low effective, not used here, pull-up processing, connecting to 3.3V external power VCC through resistor R5, resistor R5 with resistance of 4.7K ohm, pin 2 is chip EN pin, even if the pin can be connected, high level is effective, voltage division is performed through resistor R3 and resistor R4, resistor R3 with resistance of 200K ohm, resistor R4 with resistance of 39K ohm, the divided voltage is connected with the drain of MOS tube Q1, the source of MOS tube Q1 is connected with resistor R2, resistor R2 with resistance of 100 ohm, the grid of MOS tube Q1 is connected with resistor R1, resistor R1 with resistance of 4.7K ohm, control resistor RolA is the control signal of MOS tube Q1, high and low level action is performed by the external circuit, capacitor C1 is the filter capacitor of control signal, the capacitor value is 0.1uf, filtering interference signal, pin 3 is chip TIME, namely, the pin is chip TIME pin, not used here, ground is connected with capacitor C2, the capacitor C2 has a capacitance value of 0.1uf, the 4 pin is a chip ground pin, the 5 pin is a chip OUT pin, and is an output voltage monitoring pin, when the voltage switching is successful, 12V is output, the capacitor C5 and the capacitor C6 are output filter capacitors, the capacitor C5 has a capacitance value of 0.1uf, the capacitor C6 has a capacitance value of 10uf, the 6 pin is a chip GATE pin, and is a GATE drive pin, and is connected to the MOS transistor Q2 through the resistor R7, the resistance value of the resistor R7 is 10 ohms, the 7 pin is a chip SENSE pin, is a current detection pin, and is connected to a drain stage of the MOS transistor Q2, the 8 pin is a chip power supply input pin, the supply voltage is 12V external power VCC, the filtering is performed through the capacitor C3 and the capacitor C4, the capacitance value of the capacitor C3 is 0.1uf, the capacitance value of the capacitor C4 is 10uf, and is connected to a drain stage of the MOS transistor Q2 through the resistor R6, and the resistor R6 is 2 milliohm sampling resistor.
Example 3:
as shown in fig. 1, the circuit board fixture in the embodiment is composed of a circuit board PCB, a power chip holder, a capacitor, a resistor, an MOS transistor, and the like, and is used for verifying the capability of the hot-switching power chip to work normally and whether the circuit can work normally. The circuit board clamp adopts the following scheme principle: the 1.12V external power VCC and the 3.3V external power VCC are supplied with power by the external power and provide input voltage, wherein the 12V external power VCC is used for a power supply pin of the power supply chip, and the 3.3V external power VCC is used as a signal pull-up voltage for processing. 2. The power supply chip socket is 8 pins for soldering a chip to be tested thereon, and currently, the tps24701 chip of the TI company is used for verification, and the pins correspond to the following: the pin 1 is PGb, power-on indication signal, low effective, not used here, pull-up processing, connecting to 3.3V external power VCC through resistor R5, resistor R5 with resistance of 4.7K ohm, pin 2 is chip EN pin, even if the pin can be connected, high level is effective, voltage division is performed through resistor R3 and resistor R4, resistor R3 with resistance of 200K ohm, resistor R4 with resistance of 39K ohm, the divided voltage is connected with the drain of MOS tube Q1, the source of MOS tube Q1 is connected with resistor R2, resistor R2 with resistance of 100 ohm, the grid of MOS tube Q1 is connected with resistor R1, resistor R1 with resistance of 4.7K ohm, control resistor RolA is the control signal of MOS tube Q1, high and low level action is performed by the external circuit, capacitor C1 is the filter capacitor of control signal, the capacitor value is 0.1uf, filtering interference signal, pin 3 is chip TIME, namely, the pin is chip TIME pin, not used here, ground is connected with capacitor C2, the capacitance value of the capacitor C2 is 0.1uf, the capacitance value of the capacitor C5 and the capacitance C6 are output filter capacitors, the capacitance value of the capacitor C5 is 0.1uf, the capacitance value of the capacitor C6 is 10uf, the capacitance value of the 6 pin is a chip GATE pin and is a GATE drive pin, the capacitor C5 and the capacitor C6 are connected to a MOS tube Q2 through a resistor R7, the resistance value of the resistor R7 is 10 ohms, the 7 pin is a chip SENSE pin and is a current detection pin and is connected with a drain stage of the MOS tube Q2, the 8 pin is a chip power supply input pin, the power supply voltage is VCC12V, the filtering is performed through the capacitor C3 and a capacitor C4, the capacitance value of the capacitor C3 is 0.1uf, the capacitance value of the capacitor C4 is 10uf, the current detection pin is connected to a drain stage of the MOS tube Q2 through R6, and the resistor R6 is 2 milli sampling resistor.
When the circuit board clamp scheme is used for verification, the tps24701 chip is welded on a power supply chip seat, 12V voltage is input to VCC, the high level is set through the control A at the moment, the MOS tube Q1 is conducted, the pin EN of the power supply chip 2 is pulled low, the MOS tube Q2 is driven to be disconnected, the output voltage is 0V, the low level is set through the control A, the MOS tube Q1 is disconnected, the pin EN of the power supply chip 2 is pulled high, the MOS tube Q2 is driven to be connected, the output voltage is 12V, the function of the hot switching power supply chip is verified for multiple times, and therefore the working stability of the function of the hot switching power supply chip is obtained. The scheme is simple to realize, the cost is saved, the cost of the clamp plate is only dozens of money, and the operation is convenient.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (2)
1. A clamp for verifying a hot-switching power supply chip comprises a circuit board PCB and is characterized in that a power supply chip holder is fixed on the circuit board PCB, the power supply chip holder is provided with a 1 pin, a 2 pin, a 3 pin, a 4 pin, a 5 pin, a 6 pin, a 7 pin and an 8 pin, the 1 pin is connected with a resistor R5, a resistor R5 is connected with a 3.3V external power supply VCC, the 2 pin is connected with a resistor R3 and a resistor R4, the resistor R3 is connected with a 12V external power supply VCC, a resistor R4 is connected with a resistor R2, the 2 pin is connected with an MOS tube Q1, the MOS tube Q1 is connected with a resistor R1 and a resistor R2, the resistor R2 is connected with a capacitor C1, and the resistor R1 and the capacitor C1 are both connected with a control signal cont resistor RolA of the MOS tube Q1; 3 pin connection electric capacity C2, 8 pin connection electric capacity C3 and 12V external power VCC, electric capacity C3 parallel connection electric capacity C4, electric capacity C4 connecting resistance R6, 7 pin connection MOS pipe Q2, MOS pipe Q2 connect electric capacity C5, electric capacity C5 parallel connection electric capacity C6, 6 pin connecting resistance R7, resistance R7 connect MOS pipe Q2, 5 pin connection MOS pipe Q2.
2. The fixture for verifying the hot-switch power supply chip as claimed in claim 1, wherein said resistor R and said capacitor C are both grounded, and said capacitor C6 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122761401.7U CN216310068U (en) | 2021-11-11 | 2021-11-11 | Clamp for verifying hot-switching power supply chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122761401.7U CN216310068U (en) | 2021-11-11 | 2021-11-11 | Clamp for verifying hot-switching power supply chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216310068U true CN216310068U (en) | 2022-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122761401.7U Active CN216310068U (en) | 2021-11-11 | 2021-11-11 | Clamp for verifying hot-switching power supply chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216310068U (en) |
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2021
- 2021-11-11 CN CN202122761401.7U patent/CN216310068U/en active Active
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