CN217563522U - Reference voltage control circuit, booster circuit and processor chip control circuit - Google Patents
Reference voltage control circuit, booster circuit and processor chip control circuit Download PDFInfo
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- CN217563522U CN217563522U CN202221411867.2U CN202221411867U CN217563522U CN 217563522 U CN217563522 U CN 217563522U CN 202221411867 U CN202221411867 U CN 202221411867U CN 217563522 U CN217563522 U CN 217563522U
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Abstract
The utility model relates to a power conversion chip correlation technique field, concretely relates to reference voltage control circuit, boost circuit and treater chip control circuit of power conversion chip. The reference voltage control circuit comprises a drive control module and a divider resistor module, a first end of the drive control module is used for connecting a signal sending end, a second end of the drive control module is connected with a first end of the divider resistor module, a third end of the drive control module is grounded, the first end of the divider resistor module is used for connecting a first pin of a power conversion chip, the second end of the divider resistor module is connected with a second pin of the power conversion chip, and the third end of the divider resistor module is grounded. The reference voltage control circuit controls the power conversion chip to provide output voltage based on high and low level signals, further controls the working voltage of the processor chip, can conveniently control a computer and other devices to achieve corresponding working performance, does not need to change hardware/parts in an original circuit, and is convenient to operate and low in cost.
Description
Technical Field
The utility model relates to a power conversion chip correlation technique field, concretely relates to reference voltage control circuit, boost circuit and treater chip control circuit of power conversion chip.
Background
At present, many electronic systems are generally powered by batteries, and since the variation of the output voltage affects the operating state of the electronic system, the industry generally uses a power conversion chip to convert the battery output voltage to a voltage value required by a load (usually, a CPU/GPU chip). Taking a computer as an example, in different working conditions or application environments, users have different requirements on computer performance and graphic processing, when the users need to improve the performance and graphic processing capability of the computer, the users need to control the CPU/GPU to perform the over-frequency action, and the over-frequency action needs to perform fine tuning and boosting on the voltages of the CPU and GPU chips. In the prior art, the voltage rising regulation is realized by changing parts through hardware, namely, new parts need to be welded in the original circuit again, so that the operation is complex, adaptive parts need to be searched for different chip circuits, and the hardware cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves of embodiment is that need realize through hardware change part when carrying out the step-up voltage regulation to power conversion chip among the prior art, complex operation and hardware are with high costs.
In order to solve the above technical problem, the utility model discloses a technical scheme that embodiment adopted is: the reference voltage control circuit of the power conversion chip comprises a driving control module and a voltage-dividing resistor module, wherein a first end of the driving control module is used for being connected with a signal sending end, a second end of the driving control module is connected with a first end of the voltage-dividing resistor module, a third end of the driving control module is grounded, a first end of the voltage-dividing resistor module is used for being connected with a first pin of the power conversion chip, a second end of the voltage-dividing resistor module is used for being connected with a second pin of the power conversion chip, and a third end of the voltage-dividing resistor module is grounded;
the signal sending end is used for providing a driving signal to the driving control module;
the drive control module is used for controlling the first terminal voltage of the voltage-dividing resistor module based on the drive signal;
the voltage division resistance module is used for providing reference voltage to the power conversion chip based on the first terminal voltage.
Optionally, the driving control module includes a first power supply, a resistor R1, a switch tube PQ1 and a resistor R42, the control end of the switch tube PQ1 is connected to the signal sending end, the control end of the switch tube PQ1 is connected to the first power supply through the resistor R1, the first end of the switch tube PQ1 is connected to the first end of the voltage-dividing resistor module through the resistor R42, and the second end of the switch tube PQ1 is grounded.
Optionally, the voltage-dividing resistance module includes a resistor R2 and a resistor R41 connected in series, a first end of the resistor R2 is connected to the second pin of the power conversion chip, a second end of the resistor R2 is connected to the first end of the resistor R41, a first end of the resistor R41 is connected to the second end of the driving control module, and a second end of the resistor R41 is grounded.
Optionally, the filter module further includes a first end of the filter module is connected to the first end of the voltage-dividing resistor module, and a second end of the filter module is grounded.
Optionally, the filtering module is a capacitor C1, a first end of the capacitor C1 is connected to a first end of the voltage-dividing resistor module, and a second end of the capacitor C1 is grounded.
Optionally, the driving signal is a high-low level signal.
In order to solve the above technical problem, the utility model discloses another technical scheme that embodiment adopted is: the booster circuit of the power conversion chip comprises the power conversion chip, a voltage output port and a reference voltage control circuit of the power conversion chip, wherein an input pin of the power conversion chip is used for connecting a second power supply, and an output pin of the power conversion chip is connected with the voltage output port;
the second power supply is used for providing initial voltage to the power conversion chip;
the power conversion chip is used for converting the initial voltage into an output voltage based on the reference voltage and providing the output voltage to the voltage output port so as to provide the output voltage to a load through the voltage output port.
In order to solve the above technical problem, the embodiment of the present invention adopts another technical solution: the processor chip control circuit comprises a processor chip and the booster circuit of the power conversion chip, wherein the processor chip is electrically connected with the voltage output port.
Be different from the condition of correlation technique, the embodiment of the utility model provides a reference voltage control circuit, boost circuit and treater chip control circuit of power conversion chip. The reference voltage control circuit comprises a drive control module and a voltage-dividing resistor module, wherein a first end of the drive control module is used for being connected with a signal sending end, a second end of the drive control module is connected with a first end of the voltage-dividing resistor module, a third end of the drive control module is grounded, the first end of the voltage-dividing resistor module is used for being connected with a first pin of a power conversion chip, the second end of the voltage-dividing resistor module is used for being connected with a second pin of the power conversion chip, and the third end of the voltage-dividing resistor module is grounded. The reference voltage control circuit controls the power conversion chip to provide output voltage based on high and low level signals, so that the working voltage of the processor chip is controlled, devices such as a computer and the like which can be conveniently controlled can achieve corresponding working performance, hardware/parts in an original circuit do not need to be changed, and the reference voltage control circuit is convenient to operate and low in cost.
Drawings
Fig. 1 is a schematic diagram of a processor chip control circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a boost circuit of a power conversion chip according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a reference voltage control circuit of a power conversion chip according to an embodiment of the present invention.
Detailed Description
To facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It is noted that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present therebetween, and similarly, when a module/unit is referred to as being "connected" to another module/unit, it can be directly connected to the other module/unit or intervening modules/units may be present therebetween. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, an embodiment of the present invention provides a processor chip control circuit, which includes a boost circuit 20 of a power conversion chip and a processor chip 31, where the boost circuit 20 of the power conversion chip is connected to a second power VCC2, converts an initial voltage provided by the second power VCC2 into an output voltage, and provides the output voltage to the processor chip 31, and in some embodiments, the processor chip 31 may be a CPU chip, a GPU chip, or a memory chip of a computer, and the output voltage may be a chip core voltage provided to these chips, such as a core voltage Vcore of the CPU, a core voltage GPUVRM of the GPU, a core voltage VDDQ of the memory, and the like. When the computer needs the performance improvement, for example when needing the graphics processing ability who promotes the computer in certain sight, the embodiment of the utility model provides a processor chip control circuit can pass through power conversion chip's boost circuit 20 steps up initial voltage to required output voltage to carry out the overclocking action to processor chip 31, thereby promote the performance and the graphics processing ability of computer.
Please refer to fig. 2, an embodiment of the present invention provides a voltage boost circuit of a Power conversion chip, the voltage boost circuit 20 of the Power conversion chip includes a Power conversion chip 21, a voltage output port 22 and a reference voltage control circuit 10 of the Power conversion chip, an input pin (indicated as pin 1 of the Power conversion chip in the figure) of the Power conversion chip 21 is used for connecting a second Power source, an output pin (indicated as pin 2 of the Power conversion chip in the figure) of the Power conversion chip is connected to the voltage output port 22, it should be noted that the embodiment of the present invention provides a Power conversion chip which is a Power PWM IC and a similar chip thereof.
The second power supply can provide an initial voltage to the power conversion chip, and VCC2 is used as the second power supply in the figure, and the second power supply can be a power supply battery and other devices; the reference voltage control circuit 10 of the power conversion chip can provide the power conversion chip 21 with the reference voltage required by the power conversion chip, which is denoted by VREFIN in, and the power conversion chip 21 can convert the initial voltage into the output voltage based on the reference voltage and provide the output voltage to the voltage output port 22 to provide the output voltage to the load through the voltage output port, which is denoted by Vout in the figure.
Referring to fig. 3, the reference voltage control circuit 10 of the power conversion chip includes a driving control module 11 and a voltage-dividing resistor module 12, a first end of the driving control module 11 is connected to a signal sending end, a General-purpose input/output (GPIO) is used to represent the signal sending end in the drawing, a second end of the driving control module 11 is connected to a first end of the voltage-dividing resistor module 12, a third end of the driving control module 11 is grounded, a first end of the voltage-dividing resistor module 12 is connected to a first pin (denoted as pin 8 of the power conversion chip in the drawing) of the power conversion chip 21, a second end of the voltage-dividing resistor module 12 is connected to a second pin (denoted as pin 7 of the power conversion chip in the drawing) of the power conversion chip 21, and a third end of the voltage-dividing resistor module 12 is grounded.
The signal transmitting end may provide a driving signal to the driving control module, for example, a chip/single chip microcomputer and other devices may transmit the driving signal to the first end of the driving control module 11 through the signal transmitting end to control the on/off of the driving control module 11, where the driving signal is a high/low level signal. The driving control module 11 may control a first terminal voltage of the voltage-dividing resistor module 12 based on the driving signal, and the voltage-dividing resistor module 12 may provide a reference voltage to the power conversion chip based on the first terminal voltage.
As shown in fig. 3, the driving control module 11 at least includes a first power supply, a resistor R1, a switch tube PQ1 and a resistor R42, where VCC1 in the drawing indicates the first power supply, VCC1 may be a power conversion chip 21 (or a pin providing a voltage in the power conversion chip 21), that is, the voltage provided by VCC1 may be the voltage provided by the power conversion chip 21, a control terminal of the switch tube PQ1 is connected to the signal sending terminal, a control terminal of the switch tube PQ1 is connected to the first power supply VCC1 through the resistor R1, a first terminal of the switch tube PQ1 is connected to a first terminal of the voltage-dividing resistor module 12 through the resistor R42, and a second terminal of the switch tube PQ1 is grounded.
The voltage-dividing resistor module 12 includes a resistor R2 and a resistor R41 connected in series, a first end of the resistor R2 is connected to a second pin (indicated as pin 7 of the power conversion chip in the figure) of the power conversion chip 21, a second end of the resistor R2 is connected to a first pin (indicated as pin 8 of the power conversion chip in the figure) of the power conversion chip, a second end of the resistor R2 is connected to a first end of the resistor R41, a first end of the resistor R41 is connected to a second end of the driving control module 11, and a second end of the resistor R41 is grounded.
Referring to fig. 2, taking the computer as an example, when the CPU/GPU in the computer is in a normal state, the core voltage of the corresponding processor chip is a normal operating voltage, and it is assumed that the normal operating voltage is 0.88V, i.e. the output voltage of the power conversion chip 21 is 0.88V. At this time, the driving signal provided by the GPIO is a high level signal, the switching tube PQ1 is turned on, the resistor R41 and the resistor R42 are connected in parallel, and the resistance value obtained by connecting the two in parallel is equivalently represented as the resistor R40 (i.e., the voltage divided by the resistor R41 in the voltage dividing resistor module 12). As can be seen from the characteristics of the parallel circuit, the resistance value of the resistor R40 is smaller than R41/R42, and since the voltage across the voltage-dividing resistor module 12 is fixed, i.e. the voltage at the pin 7 of the power conversion chip 21 is fixed, the voltage at the first end of the voltage-dividing resistor module 12 is related to the resistance values of the resistor R2 and the resistor R40. The first end voltage is a voltage at the first end of the voltage-dividing resistor module 12, that is, a voltage at a position between the resistor R2 and the resistor R41 in the figure, the first end of the voltage-dividing resistor module 12 is connected to the pin 8 of the power conversion chip 21, and provides a reference voltage VREFIN (a) to the power conversion chip 21, where the output voltage corresponding to the reference voltage VREFIN (a) is 0.88V.
In the power conversion chip, the output voltage Vout is positively correlated with the reference voltage VREFIN, and the reference voltage VREFIN is positively correlated with the resistance of the resistor R40. For example, in some embodiments, the relationship between the output voltage and the resistance of the power conversion chip 21 may be: vout =2 (R40/(R2 + R40)), and the larger R40, the larger the output voltage Vout.
When performing the overclocking operation on the CPU/GPU chip to improve the performance of the computer, the operating voltage of the CPU/GPU chip needs to be finely adjusted (usually boosted), and it is assumed that the overclocking operating voltage is 0.92V, that is, the output voltage of the power conversion chip 21 needs to be 0.92V. At this time, the driving signal provided by the GPIO may be controlled by software to be a low level signal, the switching tube PQ1 is turned off, the resistor R42 is suspended, and only the resistor R41 and the resistor R2 are connected in series and divide voltage (since the resistor R42 is suspended, the resistance of the resistor R40 is equal to the resistance of the resistor R41), and the voltage at the first end of the voltage-dividing resistor module 12 is related to the resistances of the resistor R2 and the resistor R40. Compared with the resistor R40 (the resistance after the parallel connection of the R41 and the R42) in the case of the high level signal, the resistance of the resistor R40 (the resistance of the single R41) in the case of the high level signal is larger, the voltage obtained by dividing the corresponding branch of the voltage-dividing resistor module is larger, the voltage of the corresponding first end is larger, the first end of the voltage-dividing resistor module 12 is connected to the pin 8 of the power conversion chip 21, the reference voltage VREFIN (b) is provided for the power conversion chip 21 based on the voltage of the first end, and the output voltage corresponding to the reference voltage VREFIN (b) may be 0.92V in the case of the appropriate resistance of the resistor R42.
In some embodiments, the reference voltage control circuit 10 of the power conversion chip further includes a filtering module 13, as shown in fig. 3, the filtering module 13 is a capacitor C1, a first end of the capacitor C1 is connected to a first end of the voltage-dividing resistor module 12, and a second end of the capacitor C1 is grounded. When the reference voltage control circuit 10 of the power conversion chip is turned on, the capacitor C1 can filter out noise waves in the circuit.
It should be noted that the embodiment of the present invention provides a "boost" in the boost circuit of the power conversion chip, which is only for convenience of naming, and in fact, this circuit can output a high level signal or a low level signal through the software control GPIO to control the voltage value of the output voltage of the power conversion chip, and can boost or step down, and can be controlled according to the requirement of the current situation in the actual use. The embodiment of the utility model provides a power conversion chip's reference voltage control circuit and boost circuit can only control power conversion chip's output voltage through software control high-low level signal's switching, and then the operating voltage of control treater chip to make devices such as computer can reach corresponding working property, need not change the hardware/part in the original circuit, and control is convenient and with low costs.
It should be noted that the preferred embodiments of the present invention are described in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not provided as additional limitations to the present invention, and are provided for the purpose of making the understanding of the disclosure of the present invention more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A reference voltage control circuit of a power conversion chip is characterized by comprising a driving control module and a voltage-dividing resistor module, wherein a first end of the driving control module is used for being connected with a signal sending end, a second end of the driving control module is connected with a first end of the voltage-dividing resistor module, a third end of the driving control module is grounded, a first end of the voltage-dividing resistor module is used for being connected with a first pin of the power conversion chip, a second end of the voltage-dividing resistor module is used for being connected with a second pin of the power conversion chip, and a third end of the voltage-dividing resistor module is grounded;
the signal sending end is used for providing a driving signal to the driving control module;
the drive control module is used for controlling the first terminal voltage of the voltage-dividing resistor module based on the drive signal;
the voltage division resistance module is used for providing reference voltage to the power conversion chip based on the first terminal voltage.
2. The reference voltage control circuit according to claim 1, wherein the driving control module includes a first power supply, a resistor R1, a switch PQ1, and a resistor R42, wherein a control terminal of the switch PQ1 is connected to the signal transmitting terminal, a control terminal of the switch PQ1 is connected to the first power supply through the resistor R1, a first terminal of the switch PQ1 is connected to a first terminal of the voltage-dividing resistor module through the resistor R42, and a second terminal of the switch PQ1 is grounded.
3. The reference voltage control circuit according to claim 1, wherein the voltage-dividing resistor module includes a resistor R2 and a resistor R41 connected in series, a first end of the resistor R2 is connected to the second pin of the power conversion chip, a second end of the resistor R2 is connected to the first end of the resistor R41, a first end of the resistor R41 is connected to the second end of the driving control module, and a second end of the resistor R41 is connected to ground.
4. The reference voltage control circuit according to any one of claims 1 to 3, further comprising a filter module, wherein a first terminal of the filter module is connected to the first terminal of the voltage-dividing resistor module, and a second terminal of the filter module is grounded.
5. The reference voltage control circuit of claim 4, wherein the filtering module is a capacitor C1, a first terminal of the capacitor C1 is connected to a first terminal of the voltage-dividing resistor module, and a second terminal of the capacitor C1 is grounded.
6. The reference voltage control circuit of claim 1, wherein the driving signal is a high-low signal.
7. A booster circuit of a power conversion chip, comprising the power conversion chip, a voltage output port, and the reference voltage control circuit of the power conversion chip according to any one of claims 1 to 6, wherein an input pin of the power conversion chip is used for connecting a second power supply, and an output pin of the power conversion chip is connected to the voltage output port;
the second power supply is used for providing initial voltage to the power conversion chip;
the power conversion chip is used for converting the initial voltage into an output voltage based on the reference voltage and providing the output voltage to the voltage output port so as to provide the output voltage to a load through the voltage output port.
8. A processor chip control circuit comprising a processor chip and the voltage boost circuit of the power conversion chip of claim 7, the processor chip being electrically connected to the voltage output port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221411867.2U CN217563522U (en) | 2022-06-07 | 2022-06-07 | Reference voltage control circuit, booster circuit and processor chip control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221411867.2U CN217563522U (en) | 2022-06-07 | 2022-06-07 | Reference voltage control circuit, booster circuit and processor chip control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN217563522U true CN217563522U (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221411867.2U Active CN217563522U (en) | 2022-06-07 | 2022-06-07 | Reference voltage control circuit, booster circuit and processor chip control circuit |
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Effective date of registration: 20231024 Address after: 518000, 4th Floor, No. 31, Xiacun Community, Gongming Street, Guangming District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Baoxinchuang Information Technology Co.,Ltd. Address before: 518000 2nd floor, no.6, huidebao Industrial Park, No.11, second industrial zone, Baihua community, Guangming Street, Guangming District, Shenzhen City, Guangdong Province Patentee before: Shenzhen baoxinchuang Technology Co.,Ltd. |