CN220139409U - Chip power supply device - Google Patents
Chip power supply device Download PDFInfo
- Publication number
- CN220139409U CN220139409U CN202320796241.6U CN202320796241U CN220139409U CN 220139409 U CN220139409 U CN 220139409U CN 202320796241 U CN202320796241 U CN 202320796241U CN 220139409 U CN220139409 U CN 220139409U
- Authority
- CN
- China
- Prior art keywords
- power supply
- electrically connected
- interface
- chip
- 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
- 238000012360 testing method Methods 0.000 claims abstract description 26
- 239000003381 stabilizer Substances 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 56
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 230000000087 stabilizing effect Effects 0.000 description 18
- 235000012431 wafers Nutrition 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- 230000002354 daily effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Landscapes
- Tests Of Electronic Circuits (AREA)
Abstract
The utility model provides a chip power supply device, comprising: the linear voltage regulators are electrically connected with different power interfaces of the equipment to be tested; the selection circuit comprises an on-board interface and an external interface, wherein the on-board interface is electrically connected with the linear voltage stabilizer, and the external interface is electrically connected with the power supply interface; the external power supply module is detachably connected with the external interface; when the on-board interface is electrically connected with the external interface, the linear voltage stabilizer is electrically connected with the equipment to be tested, and when the on-board interface is disconnected with the external interface, the external power supply module is electrically connected with the external interface and the equipment to be tested. The utility model provides a chip power supply device which can finish sample wafer testing on multiple types of image sensors and has the advantages of high power supply efficiency and good power supply stability.
Description
Technical Field
The utility model relates to the technical field of image sensor testing, in particular to a chip power supply device.
Background
A CMOS image sensor is a solid-state imaging sensor capable of converting an optical image into an electronic signal. The CMOS image sensor is a sensitive device, and the quality of power supply directly influences the image effect of the image sensor. Therefore, before the CMOS image sensor is shipped, it is necessary to perform detailed dailies test on the CMOS image sensor.
In the sample test of the CMOS image sensor, the sample test process of the CMOS image sensor is complex and inefficient because the CMOS image sensor has various types and the test requires frequent adjustment of power supply.
Disclosure of Invention
The utility model aims to provide a chip power supply device which can finish sample wafer testing on multiple types of image sensors and has high power supply efficiency and good power supply stability.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model provides a chip power supply device, comprising:
the linear voltage regulators are electrically connected with different power interfaces of the equipment to be tested;
the selection circuit comprises an on-board interface and an external interface, wherein the on-board interface is electrically connected with the linear voltage stabilizer, and the external interface is electrically connected with the power supply interface; the external power supply module is detachably connected with the external interface;
when the on-board interface is electrically connected with the external interface, the linear voltage stabilizer is electrically connected with the equipment to be tested, and when the on-board interface is disconnected with the external interface, the external power supply module is electrically connected with the external interface and the equipment to be tested.
In an embodiment of the utility model, the chip power supply device includes a power supply circuit board, the selection circuit and the linear voltage regulator are disposed on the power supply circuit board, and the device to be tested is electrically connected to the power supply circuit board.
In an embodiment of the utility model, the selection circuit includes a pin element, the pin element is electrically connected to the power supply circuit board, and the on-board interface and the external interface are disposed on the pin element.
In an embodiment of the utility model, the linear voltage stabilizer includes a power supply chip, an input end of the power supply chip is electrically connected to a power supply, and an output end of the power supply chip is electrically connected to the selection circuit.
In an embodiment of the utility model, the linear voltage stabilizer includes a voltage dividing resistor and a voltage regulating resistor, wherein one end of the voltage dividing resistor is electrically connected to the power supply chip, and the other end of the voltage dividing resistor is electrically connected to the voltage regulating resistor.
In an embodiment of the utility model, the linear voltage regulator includes a protection capacitor, one end of the protection capacitor is electrically connected to the voltage regulating resistor, and the other end of the protection capacitor is electrically connected to the power supply chip.
In an embodiment of the utility model, the linear voltage stabilizer includes a first filter capacitor, one end of the first filter capacitor is electrically connected to a power supply end or an output end of the power supply chip, and the other end of the first filter capacitor is grounded.
In an embodiment of the utility model, a power supply end and an output end of the power supply chip are electrically connected to the plurality of first filter capacitors.
In an embodiment of the utility model, the chip power supply device includes a second filter capacitor, where the second filter capacitor is electrically connected to the power supply circuit board, and one end of the second filter capacitor is electrically connected to the on-board interface or the external interface, and the other end of the second filter capacitor is grounded.
In an embodiment of the utility model, the chip power supply device includes a switch element, and the switch element is electrically connected between the on-board interface and the external interface.
As described above, the utility model provides a chip power supply device, which can flexibly select a power supply for an image sensor according to actual test conditions, can realize low-cost and high-precision power supply, and can also consider test data collection in the test process, so that the power supply efficiency is high. According to the chip power supply device provided by the utility model, a plurality of standard voltages can be simultaneously output, the voltage range of the output voltage can be accurately regulated, the power supply precision is high, and the power supply range is wide. The chip power supply device provided by the utility model has the advantages of strong universality, convenience in operation and high flexibility, and can cope with various use conditions in the sample wafer test process.
Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a power supply device according to an embodiment of the utility model.
FIG. 2 is a schematic diagram illustrating an interface of an image sensor die according to an embodiment of the utility model.
Fig. 3 is a schematic diagram of a voltage stabilizing circuit according to an embodiment of the utility model.
Fig. 4 is a schematic diagram illustrating connection between a plurality of on-board circuits and a power module according to an embodiment of the utility model.
Fig. 5 is a schematic diagram of an external power module according to an embodiment of the utility model.
In the figure: 10. a power supply device; 100. an image sensor dailies; 200. a power supply module; 201. simulating a power port; 202. a digital power port; 2021. a first port; 2022. a second port; 300. a linear voltage stabilizer; 400. a power supply circuit board; 500. a voltage stabilizing circuit; 501. a power supply chip; 5011. a power interface; 5012. a control interface; 5013. a ground interface; 5014. a pressure regulating interface; 5015. an output interface; 502. a first filter loop; 5021. a first filter capacitor; 503. a pressure regulating circuit; 5031. a voltage dividing resistor; 5032. a voltage regulating resistor; 5033. a protective capacitor; 600. a power supply; 700. externally connecting a power module; 800. a selection circuit; 801. a pin element; 802. a second filter loop; 8021. and a second filter capacitor.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the image sensor can convert the light image on the photosensitive surface into an electrical signal in a proportional relationship with the light image by using the photoelectric conversion function of the photoelectric device. Image sensors are classified into photoconductive cameras and solid-state image sensors. In this embodiment, the CMOS image sensor is a solid-state image sensor, and compared with a photoconductive camera tube, the CMOS image sensor has a small size, light weight, high integration level, high resolution, low power consumption, long lifetime, and low price, and thus is widely used in various industries. The CMOS image sensor comprises an image sensitive unit array, a row driver, a column driver, time sequence control logic, an AD converter, a data bus output interface and a control interface, and a plurality of components and structures are integrated on the same silicon chip. According to different application requirements, the types or structures of all the components of the CMOS image sensor can be adjusted, or different types of integrated circuit structures are arranged, so that the image sensors with different types can be formed. The sample wafer test of the sensor comprises the test processes of direct current test, functional test, image test and the like, the types of the related test sample wafers are various, and the test items are more. Therefore, the present utility model provides a power supply device for an image sensor, which can supply power to the image sensor sample 100 to facilitate the stable test of the image sensor.
Referring to fig. 1 and 2, the present utility model provides a power supply device 10 for an image sensor, where the power supply device 10 can provide power for a sample 100 of the image sensor during a sample testing stage. The image sensor sample 100 includes a power supply module 200, and the power supply device 10 is electrically connected to the power supply module 200, so as to provide power for functional components and functional circuits of the image sensor sample 100. The power supply device 10 is continuously operated according to the test requirements throughout the test phase of the image sensor wafer 100. In the present embodiment, the power supply apparatus 10 includes a linear voltage regulator 300, a power supply circuit board 400, and an external power supply module 700, and a selection circuit 800. In the present embodiment, the linear regulator 300 includes a voltage stabilizing circuit 500. Wherein the voltage stabilizing circuit 500 is disposed on the power supply circuit board 400. In this embodiment, the image sensor sample 100 is electrically connected to the power supply circuit board 400, and the voltage stabilizing circuit 500 is electrically connected to the image sensor sample 100. The external power module 700 is electrically connected to the image sensor wafer 100. Specifically, the voltage stabilizing circuit 500 and the external power module 700 are electrically connected to the power supply module 200 respectively. For different image sensor dailies 100 and different test items, the power supply 10 may provide on-board power or external power. The selection circuit 800 can select a power source connected to the image sensor die 100. The linear voltage stabilizer 300 and the external power supply module 700 provided by the utility model can provide a wider voltage regulating range for the image sensor sample 100, and have strong universality. Wherein the external power module 700 may be a digital dc power device.
Referring to fig. 2, in an embodiment of the present utility model, the power supply module 200 includes an analog power port 201 (Analog Voltage Drain Drain, AVDD) and a digital power port 202 (Digital Voltage Drain Drain, DVDD). Wherein the digital power port 202 includes a first port 2021 and a second port 2022. In the present embodiment, the access voltages of the analog power supply port 201, the first port 2021, and the second port 2022 are different. Wherein the standard voltage of the analog power port 201 is, for example, 2.8V, the standard voltage of the first port 2021 is, for example, 1.2V, and the standard voltage of the second port 2022 is, for example, 1.8V. Specifically, the voltage of the analog power port 201 may be, for example, 2.3V to 3.3V, the standard voltage of the first port 2021 is, for example, 0.7V to 1.7V, and the standard voltage of the second port 2022 is, for example, 1.3V to 2.3V. In this embodiment, the analog power port 201 is the AVDD interface in fig. 2. Specifically, the analog power port 201 includes an AVDD1 interface to an AVDD3 interface. In this embodiment, the first port 2021 is the DVDD interface in fig. 2, and the second port 2022 is the DNDDIO interface in fig. 2. Specifically, the digital power port 202 includes a DVDD1 interface to DVDD10 interface, a DVDDIO1 interface and a DVDDIO2 interface, and a DVDDIO11 interface and a DVDDIO12 interface. The number of interfaces of the power supply module 200 is not limited by the present utility model.
Referring to fig. 1 to 3, in an embodiment of the utility model, a voltage stabilizing circuit 500 includes a power supply chip 501, a plurality of first filter circuits 502, and a voltage regulating circuit 503. In the present embodiment, the power supply chip 501 is a linear power supply to output a dc voltage having a micro ripple voltage. Specifically, the model of the power supply chip 501 may be a linear power supply of LT3045 IDD. The present utility model is not limited to a particular model of power chip 501. In the present embodiment, the power supply chip 501 includes a power supply interface 5011, a control interface 5012, a ground interface 5013, a voltage regulating interface 5014, and an output interface 5015. In the present embodiment, the power interface 5011 and the control interface 5012 are electrically connected to the power supply terminal and the first filter circuit 502, and the first filter circuit 502 is grounded. Voltage is entered into the power supply chip 501 through the power interface 5011, and the control interface 5012 can control the output of the power supply. Specifically, when the control interface 5012 is at a high level or a low level, or the control interface 5012 receives an external control signal lamp, the output interface 5015 may output a desired voltage. In the present embodiment, the ground interface 5013 is directly grounded. The voltage regulating interface 5014 is electrically connected to the voltage regulating circuit 503 for regulating the output voltage of the power supply chip 501. The output interface 5015 is electrically connected to another first filter circuit 502, and the output interface 5015 is electrically connected to the power supply module 200, so as to provide the power supply module 200 with the regulated power.
Referring to fig. 3, in an embodiment of the present utility model, a power supply chip 501 includes a plurality of interfaces. The present utility model does not limit the number of interfaces of the power supply chip 501. In the present embodiment, the power supply chip 501 includes, for example, 10 interfaces, specifically corresponding to interfaces No. 1 to No. 10 in fig. 3. The power interface 5011 includes an interface No. 1 and an interface No. 2. The power interface 5011 and the control interface 5012 are electrically connected to the power supply terminal. As shown in fig. 3, the No. 1 interface and the No. 2 interface are electrically connected to the power supply terminal VCC through metal wires or leads. The control interface 5012 may be a No. 3 interface, as shown in fig. 3, where the No. 3 interface is electrically connected to the No. 1 interface and the No. 2 interface, and the No. 3 interface is electrically connected to the power supply VCC. The interfaces 1 and 2, and the interface 3 are electrically connected to the first filter circuit 502, and the first filter circuit 502 is grounded. In the present embodiment, as shown in fig. 3, the ground interface 5013 includes an interface No. 4, an interface No. 5, an interface No. 6, and an interface No. 8. The No. 6 interface is electrically connected with the No. 1 interface, the No. 2 interface and the No. 3 interface. In this embodiment, the voltage regulating interface 5014 includes a number 7 interface, and the number 7 interface is electrically connected to the voltage regulating circuit 503 through a metal wire or a lead. In the present embodiment, the output interface 5015 includes an interface No. 9 and an interface No. 10. As shown in fig. 3, the No. 9 interface and the No. 10 interface are electrically connected to another first filter circuit 502, and the first filter circuit 502 is grounded, and the first filter circuit 502 is electrically connected to the power supply module 200. Wherein, the power supply terminal is electrically connected to the power supply 600. The power supply 600 may be, for example, a 3.3V dc power supply.
Referring to fig. 1 and 3, in an embodiment of the utility model, the first filter circuit 502 is grounded, and the first filter circuit 502 is electrically connected to the power supply terminal and the power supply module 200. In the present embodiment, the first filter circuit 502 includes a plurality of first filter capacitors 5021, such as the capacitor C1 and the capacitor C2, and the capacitor C3 and the capacitor C4 shown in fig. 3. Wherein, a plurality of first filter capacitors 5021 are connected in parallel. One end of the first filter capacitor 5021 is electrically connected to the power supply end and the power supply chip 501, and the other end of the first filter capacitor 5021 is grounded. Specifically, one end of the capacitor C1 and one end of the capacitor C2 are electrically connected to the power supply end VCC, the interface No. 1, the interface No. 2, the interface No. 3, and the interface No. 6, and the other ends of the capacitor C1 and the capacitor C2 are grounded. In this embodiment, the power supply chip 501 is electrically connected to, for example, 2 first filter loops 502. The output interface 5015 is electrically connected to the first filter circuit 502. Specifically, one ends of the capacitor C3 and the capacitor C4 are grounded, and the other ends are electrically connected to the output interface 5015 and the power supply module 200. In this embodiment, the first filter capacitor 5021 is, for example, a capacitor of 10 μf and withstand voltage of 16V.
Referring to fig. 1 and 3, in an embodiment of the utility model, the voltage regulating circuit 503 includes a voltage dividing resistor 5031, a voltage regulating resistor 5032, and a protection capacitor 5033. The voltage dividing resistor 5031, the voltage regulating resistor 5032, and the protection capacitor 5033 are connected in series. One end of the voltage dividing resistor 5031 is electrically connected to the voltage adjusting interface 5014. The voltage dividing resistor 5031 is a constant value resistor, and in this embodiment, the voltage dividing resistor 5031 is a resistor with an accuracy of, for example, 1%, and a resistance of, for example, 7kΩ to 23kΩ. The voltage regulator 5032 is a resistor capable of adjusting and changing the value, and the resistance adjustment range of the voltage regulator 5032 is, for example, 0kΩ to 10kΩ. Specifically, the voltage regulator 5032 may be model 3313J-1-103E. The protection capacitor 5033 is, for example, a capacitor having a voltage of 0.47 μf and a voltage of 16V. In the present embodiment, the resistance value of the voltage regulating resistor 5032 may be changed according to the test arrangement of the image sensor wafer 100, thereby changing the output voltage of the power supply chip 501. In the present embodiment, when the resistance value of the voltage regulating resistor 5032 is the minimum value, the output voltage of the power supply chip 501 is the minimum. When the resistance value of the voltage regulating resistor 5032 is the maximum value, the output voltage of the power supply chip 501 is the maximum. When the current value is constant, the resistance value of the voltage regulating resistor 5032 is increased, and the output voltage of the power supply chip 501 can be increased. And the adjustment accuracy of the pressure adjusting circuit 503 can reach 0.01V.
Referring to fig. 1 to 4, in an embodiment of the utility model, a plurality of voltage stabilizing circuits 500 are disposed on a power supply circuit board 400. In this embodiment, the voltage stabilizing circuits 500 are electrically connected to different interfaces of the power supply module 200. In the voltage stabilizing circuits 500, the voltage dividing resistors 5031 have different resistance values, and the voltage regulating resistors 5032 have the same resistance value adjusting range, so as to output different resistance values. In this embodiment, the voltage stabilizing circuit 500 is electrically connected to the analog power port 201. In the present embodiment, the voltage standard value of the analog power supply port 201 is, for example, 2.8V, and correspondingly, in the voltage stabilizing circuit 500, the voltage dividing resistor 5031 is, for example, 23kΩ. The constant current is, for example, 100 μa, and the output voltage of the voltage stabilizing circuit 500 is, for example, 2.3V to 3.3V. In the present embodiment, the voltage standard value of the first port 2021 is, for example, 1.2V, and correspondingly, in the voltage stabilizing circuit 500, the voltage dividing resistor 5031 is, for example, 7kΩ. The constant current is, for example, 100 μa, and the output voltage of the voltage stabilizing circuit 500 is, for example, 0.7V to 1.7V. In the present embodiment, the voltage standard value of the second port 2022 is, for example, 1.8V, and correspondingly, in the voltage stabilizing circuit 500, the voltage dividing resistor 5031 is, for example, 13kΩ. The constant current is, for example, 100 μa, and the output voltage of the voltage stabilizing circuit 500 is, for example, 1.3V to 2.3V. According to the voltage stabilizing circuit 500 provided by the utility model, a plurality of power supply ports of the image sensor sample wafer 100 can be simultaneously supplied with power, and a plurality of power supply voltages can be accurately output.
Referring to fig. 1, 2 and 5, in an embodiment of the utility model, a selection circuit 800 is disposed on a power supply circuit board 400. The selection circuit 800 is electrically connected to the linear voltage regulator 300 and the external power module 700. The selection circuit 800 includes a pin element 801 and a second filter loop 802. The pin element 801 includes an on-board interface 8011 and an external interface 8012. The on-board interface 8011 is electrically connected to the linear voltage regulator 300, and the external interface 8012 is electrically connected to the power supply module 200. The external interface 8012 is detachably electrically connected to the external power module 700. The on-board interface 8011 and the external interface 8012 are electrically connected to a switch, and when the switch is closed, the on-board interface 8011 and the external interface 8012 are turned on, so that the power supply module 200 is electrically connected to the linear voltage regulator 300. When the switch is turned off, the on-board interface 8011 and the external interface 8012 are not turned on, and the power supply module 200 is disconnected from the linear voltage regulator 300. The external power module 700 is electrically connected with the external interface 8012 through wire plugging, so that the external power module 700 is electrically connected with the power supply module 200. The linear voltage regulator 300 is convenient to use and low in power supply cost. The linear voltage stabilizer 300 provided by the utility model can provide power for various types of image sensor sample wafers 100, and has the advantages of wide provided voltage range, accurate regulation of provided voltage, strong universality and low cost. And any one of the external power module 700 and the linear voltage regulator 300 is adjusted to be electrically connected with the power supply module 200 by the selection circuit 800, which is beneficial to collecting test data in a sample wafer test stage. When it is required to obtain the real-time current of the image sensor wafer 100 and evaluate the design effect and the power consumption of the image sensor wafer 100, the real-time current can be adjusted to the external power module 700 to obtain accurate real-time power related data, such as real-time current. According to the power supply device 10 provided by the utility model, flexible power supply to the image sensor dailies 100 can be realized. In this embodiment, the pin member 801 may be 1XP2.54 in type.
Referring to fig. 1, 2 and 5, in an embodiment of the utility model, there are a plurality of selection circuits 800, and the number of selection circuits 800 may be identical to the number of linear regulators 300. The number of linear regulators 300 may be consistent with the number of power ports of the power supply module 200. Wherein the selection circuit 800 is connected between the linear voltage regulator 300 and the power supply module 200. In this embodiment, there may be a plurality of external power modules 700 to achieve accurate power supply with different voltages. The number of the external power supply modules 700 is not limited, and when the external power supply modules 700 can realize a plurality of voltage outputs, a single external power supply module 700 can be arranged.
Referring to fig. 1, 2 and 5, the second filter loop 802 includes a plurality of second filter capacitors 8021. The second filter capacitor 8021 is, for example, a capacitor C6, a capacitor C7, and a capacitor C8, and a capacitor C9, a capacitor C10, and a capacitor C11 in fig. 5. In the second filter circuit 802, a plurality of second filter capacitors 8021 are connected in parallel, and one end of each second filter capacitor 8021 is electrically connected to the on-board interface 8011 or the external interface 8012, and the other end is grounded. In this embodiment, the on-board interface 8011 and the external interface 8012 are electrically connected to the second filter capacitor 8021 respectively. The output frequency of the voltage can be stabilized by the second filter loop 802.
The embodiments of the utility model disclosed above are intended only to help illustrate the utility model. The examples are not intended to be exhaustive or to limit the utility model to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (10)
1. A chip power supply device, comprising:
the linear voltage regulators are electrically connected with different power interfaces of the equipment to be tested;
the selection circuit comprises an on-board interface and an external interface, wherein the on-board interface is electrically connected with the linear voltage stabilizer, and the external interface is electrically connected with the power supply interface; and
the external power supply module is detachably connected with the external interface;
when the on-board interface is electrically connected with the external interface, the linear voltage stabilizer is electrically connected with the equipment to be tested, and when the on-board interface is disconnected with the external interface, the external power supply module is electrically connected with the external interface and the equipment to be tested.
2. The chip power supply device according to claim 1, wherein the chip power supply device comprises a power supply circuit board, the selection circuit and the linear voltage regulator are disposed on the power supply circuit board, and the device under test is electrically connected to the power supply circuit board.
3. The chip power supply device according to claim 2, wherein the selection circuit comprises a pin element electrically connected to the power supply circuit board, and the onboard interface and the external interface are disposed on the pin element.
4. The chip power supply device according to claim 2, wherein the linear voltage regulator comprises a power supply chip, an input end of the power supply chip is electrically connected to a power supply, and an output end of the power supply chip is electrically connected to the selection circuit.
5. The device of claim 4, wherein the linear voltage regulator comprises a voltage dividing resistor and a voltage regulating resistor, wherein one end of the voltage dividing resistor is electrically connected to the power supply chip, and the other end of the voltage dividing resistor is electrically connected to the voltage regulating resistor.
6. The device of claim 5, wherein the linear voltage regulator comprises a protection capacitor, one end of the protection capacitor is electrically connected to the voltage regulating resistor, and the other end of the protection capacitor is electrically connected to the power supply chip.
7. The device of claim 4, wherein the linear voltage regulator comprises a first filter capacitor, one end of the first filter capacitor is electrically connected to a power supply end or an output end of the power supply chip, and the other end of the first filter capacitor is grounded.
8. The chip power supply device according to claim 7, wherein the power supply terminal and the output terminal of the power supply chip are electrically connected to the plurality of first filter capacitors.
9. The device of claim 4, wherein the device comprises a second filter capacitor, the second filter capacitor is electrically connected to the power supply circuit board, one end of the second filter capacitor is electrically connected to the on-board interface or the external interface, and the other end of the second filter capacitor is grounded.
10. The chip power supply device according to claim 1, wherein the chip power supply device comprises a switch element electrically connected between the onboard interface and the external interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320796241.6U CN220139409U (en) | 2023-04-06 | 2023-04-06 | Chip power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320796241.6U CN220139409U (en) | 2023-04-06 | 2023-04-06 | Chip power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220139409U true CN220139409U (en) | 2023-12-05 |
Family
ID=88959055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320796241.6U Active CN220139409U (en) | 2023-04-06 | 2023-04-06 | Chip power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220139409U (en) |
-
2023
- 2023-04-06 CN CN202320796241.6U patent/CN220139409U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100489550C (en) | Voltage-applied current measuring instrument and current buffer with switch used therefor | |
| CN1411138A (en) | Semiconductor device with temp compensating circuit | |
| CN1707382A (en) | Temperature sensor circuit and calibration method thereof | |
| US20170040985A1 (en) | Apparatus and Scheme for IO-Pin-Less Calibration or Trimming of On-Chip Regulators | |
| CN106357107A (en) | Voltage regulating circuit and programmable power supply | |
| CN111596716A (en) | Voltage adjusting device, chip, power supply and electronic equipment | |
| CN113066440B (en) | Voltage regulating circuit, display module and display device | |
| CN220139409U (en) | Chip power supply device | |
| CN114325326A (en) | Automatic test system and method for chip electrical performance and controllable power supply module thereof | |
| CN113809914B (en) | Constant voltage control circuit | |
| JP2008509649A (en) | Power converter, integrated circuit including power converter, device including power converter, and power conversion method | |
| CN109375092B (en) | IIC protocol-based dual-detection-mode sensor control interface circuit | |
| CN107656572B (en) | Multi-path adjustable voltage source realized by digital-to-analog converter and control method thereof | |
| CN114460875B (en) | Power supply circuit and camera testing device | |
| JP4746489B2 (en) | Semiconductor measuring equipment | |
| US20110047391A1 (en) | Electronic device and motherboard thereof | |
| CN108021175A (en) | A kind of regulator circuit | |
| CN112834826B (en) | Method for measuring capacitance by using digital test channel | |
| CN214409261U (en) | Current measurement calibration system | |
| CN111142058B (en) | Resistance detection device and method | |
| CN220773466U (en) | Differential pressure compensation circuit of automatic test equipment and automatic test equipment | |
| CN1276639C (en) | Device for detectinbg telephone line seizure | |
| CN221263375U (en) | Power supply circuit | |
| CN103135472A (en) | Electronic load | |
| CN218473030U (en) | Voltage conversion circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |