CN221352078U - Intelligent flat-panel main board circuit and main board - Google Patents
Intelligent flat-panel main board circuit and main board Download PDFInfo
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- CN221352078U CN221352078U CN202323339443.7U CN202323339443U CN221352078U CN 221352078 U CN221352078 U CN 221352078U CN 202323339443 U CN202323339443 U CN 202323339443U CN 221352078 U CN221352078 U CN 221352078U
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- 238000004891 communication Methods 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 108700025151 PD protocol Proteins 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 6
- 101000622137 Homo sapiens P-selectin Proteins 0.000 claims description 3
- 102100023472 P-selectin Human genes 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
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Abstract
The utility model discloses an intelligent flat panel main board circuit which comprises a main control chip and a surrounding circuit, wherein the main control chip is connected with a charging module and an audio module through bus communication; the peripheral circuit comprises a power supply circuit and a safety circuit, the charging module and the audio module are both connected to the power supply circuit, the charging module comprises a main charging circuit and an auxiliary charging circuit, the main charging circuit comprises a main charging chip, a PE+ charging protocol and a BC1.2 charging protocol are built in the main charging chip, the auxiliary charging circuit comprises an auxiliary charging chip, and a constant-current CC charging protocol is built in the auxiliary charging chip; the audio module comprises two audio power amplifiers connected through I2C; through set up the module and the audio module that charge that the function is richer on mainboard circuit, can realize the quick charge to the dull and stereotyped and connect more external equipment, enlarge dull and stereotyped service scenario by a wide margin, audio module can realize stereophonic effect through two audio power amplifier that connect, can satisfy dull and stereotyped use in a plurality of fields.
Description
Technical Field
The utility model relates to the field of integrated mainboard circuits, in particular to an intelligent flat mainboard circuit and a mainboard.
Background
With the rapid development of semiconductor technology, various intelligent devices can realize various functions because of the semiconductor processor carried on the intelligent devices, particularly in the field of mobile phones, huge ecological industry is created, power is provided for the production of various industries, with the rapid development of subdivision fields, intelligent flat plates obviously have higher practicability in the special precision fields of industry, education and the like, the traditional intelligent flat plates can realize the monitoring of the processing state of the devices, or the playing of education videos, however, with the rapid promotion of products in the field of mobile phones, the use requirements of users on the flat plates are steadily improved, the traditional intelligent flat plates have single functions and poor use effects, and more use scenes are replaced by mobile phones, so the research and development of the intelligent flat plates with rich functions are urgent.
Disclosure of utility model
Aiming at the problems, the utility model aims to provide an intelligent flat panel main board circuit and a main board, so as to achieve the purpose of enriching the use scene of an intelligent flat panel.
In order to achieve the above purpose, the utility model provides an intelligent flat panel main board circuit, which comprises a main control chip and a surrounding circuit, wherein the main control chip is connected with a charging module and an audio module through bus communication;
The surrounding circuit comprises a power circuit and a safety circuit, and the charging module and the audio module are both connected to the power circuit;
The charging module comprises a main charging circuit and an auxiliary charging circuit, the main charging circuit comprises a main charging chip, a PE+ charging protocol and a BC1.2 charging protocol are arranged in the main charging chip, the auxiliary charging circuit comprises an auxiliary charging chip, and a constant-current CC charging protocol is arranged in the auxiliary charging chip;
The audio module comprises two audio power amplifiers connected through I2C.
Further, the charging module further comprises a PD circuit, wherein the PD circuit comprises a PD protocol chip, and the PD protocol chip is connected with a current detection circuit and a cable direction detection circuit through CC pins.
Further, the PD protocol chip is connected with a port manager through I2C, and the port manager is connected to external interface equipment to realize charging and data transmission functions.
Further, a power supply pin of the audio power amplifier is connected to the power supply circuit, the output voltage of the audio power amplifier is 10.25V, and the output power is 5.3W.
Further, the main control chip is also connected with a communication module through a bus in a communication manner, the communication module comprises a WIFI6 module, and the WIFI6 module is connected with the main control chip through SD signal communication.
Further, the BAT pin of the main charging chip is connected to the VBAT pin of the surrounding circuit so as to realize real-time monitoring of the voltage of an external power supply, the SW pin of the main charging chip is connected to the VSYS pin of the main control chip so as to realize the switch control of the main charging chip by the main control chip, and the PSEL pin of the main charging chip is connected to the REGN pin of the main control chip so as to realize the control of the charging voltage by the main control chip.
Further, the BAT pin of the auxiliary charging chip is connected to the VBAT pin of the surrounding circuit so as to monitor the voltage of the external power supply in real time, and the SW pin of the main charging chip is connected to the VSYS pin of the main control chip so as to realize the switch control of the main control chip on the auxiliary charging chip.
Further, the PD protocol chip is integrated with a USBPD physical layer, and supports DFP, UFP and DRP modes.
The embodiment further discloses a mainboard, including foretell mainboard circuit, the mainboard includes the PCB board, mainboard circuit printing is in on the PCB board.
Further, a charging interface and a microphone are arranged on the PCB, the charging interface is connected with the charging module, and the microphone is connected with the audio module.
The beneficial effects of the utility model are as follows:
Through set up the module and the audio module that charge that the function is richer on mainboard circuit, can realize the quick charge to the dull and stereotyped and connect more external equipment, enlarge dull and stereotyped service scenario by a wide margin, audio module can realize stereophonic effect through two audio power amplifier that connect, can satisfy dull and stereotyped use in a plurality of fields.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model.
FIG. 1 is a schematic circuit diagram of a virtual processing portion of a main control chip according to the present embodiment;
FIG. 2 is a schematic diagram of a power supply of the main control chip according to the present embodiment;
FIG. 3 is a schematic circuit diagram of a data processing and communication part of the main control chip according to the present embodiment;
FIG. 4 is a schematic circuit diagram of a peripheral function portion of the main control chip according to the present embodiment;
FIG. 5 is a schematic circuit diagram of the main charging chip of the present embodiment;
FIG. 6 is a schematic circuit diagram of the secondary charging chip according to the present embodiment;
fig. 7 is a schematic circuit diagram of an audio power amplifier according to the present embodiment;
Fig. 8 is a schematic circuit diagram of another audio power amplifier according to the present embodiment;
Fig. 9 is a circuit schematic diagram of a PD protocol chip according to this embodiment.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the substances, and not restrictive of the utility model. It should be further noted that, for convenience of description, only the portions related to the present utility model are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, an intelligent flat panel main board circuit includes a main control chip, in this embodiment, an MT6789 chip is selected as the main control chip, referring to fig. 1, the main control chip is a U1001, which includes VGPU/VCORE/VPRO-B/VPRO-L/VMODEM/AVDDEMI modules, wherein VGPU is a virtual graphics processing unit, is connected to a peripheral circuit through an I2C bus, VPRO-B and VPRO-L are virtual processors, is connected to the peripheral circuit through an I2C bus, and is used for performing virtual data processing on received electrical signals and fitting output signals. VCORE is a virtual core, and is electrically connected with VPRO-B and VPRO-L, so that the core or the thread of the virtual processor can be abstracted into a logic processing unit of the virtual machine. VMODEM is a virtual modem for connection to external communications circuitry implementing a variety of communications protocols and networks. Referring to fig. 2, a circuit processing part structure of a main control chip includes an AVDD/PERI/PLLVDD module, where AVDD is an analog power supply, an analog power supply circuit connected to a peripheral circuit, PERI is a peripheral interface for connecting a peripheral device with the main control chip, and PLLVDD is a phase-locked loop power supply module for providing voltage to the main control chip.
Referring to fig. 5 and 6, the main control chip is connected with a charging module through a bus, the charging module comprises a main charging circuit and an auxiliary charging circuit, wherein the main charging circuit comprises a main charging chip U2403, the model is SGM41512, a pe+ charging protocol and a BC1.2 charging protocol are built in the main charging chip, a VBUS pin of the main charging chip is connected to a power supply circuit of the main board circuit, a PSEL pin of the main charging chip is connected to a voltage stabilizer of the power supply circuit through a resistor R2409, SDA and SCL pins of the main charging chip are connected to the main control chip U1001 through an I2C bus, and an INT pin of the main charging chip is connected to a peripheral circuit for connecting a charging device. In addition, the SW/BTST pin is connected to the VSYS pin of the main control chip through an inductor L2403, and the BAT pin is connected to the VBAT pin of the main control chip. In order to realize the complete control of the main control chip to precharge and constant voltage CV charge, simultaneously, in order to realize the high-power charge of constant current CC, the charging module adds the auxiliary charging chip U2402, selects model SGM41511, whose VBUS pin is connected to the power supply circuit of the main board circuit, whose SDA and SCL pins are connected to the main control chip U1001 through the I2C bus, and in addition, whose SW/BTST pin is connected to the VSYS pin of the main control chip through the inductor L2401, and the BAT pin is connected to the VBAT pin of the main control chip. The charging module works in an optimal state through the simultaneous working of the main charging chip and the auxiliary charging chip, and meanwhile heating is reduced.
Referring to fig. 9, the charging module further includes a PD circuit to realize connection to an external charging device through an interface, so as to realize a charging design, and specifically, the PD circuit includes a PD protocol chip U2401, in this embodiment, model number SC2150A, and the PD protocol chip is integrated with a USBPD physical layer, and the PD protocol chip supports DFP, UFP, and DRP modes. The PD protocol chip is connected with a current detection circuit and a cable direction detection circuit through a CC pin, VDD and VCONM pins of U2401 are connected to a VSYS pin of a main control chip, SDA and SCL pins of the PD protocol chip are connected to a U1001 of the main control chip through an I2C bus, the PD protocol chip is connected with a port manager through an I2C, the port manager is connected to external interface equipment, the functions of charging and data transmission are realized, and an INT_N pin of the PD protocol chip is connected with an INT pin of a main charging chip and an auxiliary charging chip and is connected to a pin of a power management unit of a power circuit so as to provide stable power for each power utilization module.
Referring to fig. 7 and 8, the main control chip is connected with an audio module through an I2C bus, the audio module includes two audio power amplifiers, a power supply pin of each audio power amplifier is connected to the power supply circuit, an output voltage of each audio power amplifier is 10.25V, an output power of each audio power amplifier is 5.3W, specifically, the two audio power amplifiers are U301 and U302 respectively, in this embodiment, a specific model is AW88194, an integrated smart boost efficiency is up to 80%, a Low noise is as Low as 12uv, thd+n is up to 0.02%, an output voltage of each power amplifier is up to 10.25V, an output power of each audio power amplifier is guaranteed to be 5.3W, and the audio power amplifiers are connected to the main control chip through an I2C bus, and BCK/WCK/DI/DO pins of U301 and U302 are correspondingly connected, so that stereo output is achieved.
In order to enlarge the application range of the tablet, the main board circuit in the embodiment further comprises a communication module, the communication module comprises a WIFI6 module, the WIFI6 module is in communication connection with the main control chip through a main board SD signal, and compatible use with a main board WIFI/BT/FM/GPS four-in-one chip can be achieved.
The embodiment further discloses a mainboard, and the mainboard includes the PCB board, and above-mentioned mainboard circuit is printed on the PCB board, still is provided with interface and the microphone of charging on the PCB board, and the interface of charging is connected with the module that charges, and the microphone is connected with audio module.
It will be appreciated by persons skilled in the art that the above embodiments are provided for clarity of illustration only and are not intended to limit the scope of the utility model. Other variations or modifications of the above-described utility model will be apparent to those of skill in the art, and are still within the scope of the utility model.
Claims (10)
1. The intelligent panel main board circuit is characterized by comprising a main control chip and a surrounding circuit, wherein the main control chip is connected with a charging module and an audio module through bus communication;
The surrounding circuit comprises a power circuit and a safety circuit, and the charging module and the audio module are both connected to the power circuit;
The charging module comprises a main charging circuit and an auxiliary charging circuit, the main charging circuit comprises a main charging chip, a PE+ charging protocol and a BC1.2 charging protocol are arranged in the main charging chip, the auxiliary charging circuit comprises an auxiliary charging chip, and a constant-current CC charging protocol is arranged in the auxiliary charging chip;
The audio module comprises two audio power amplifiers connected through I2C.
2. The motherboard circuit of claim 1, wherein the charging module further comprises a PD circuit comprising a PD protocol chip connected with a current detection circuit and a cable direction detection circuit through CC pins.
3. The motherboard circuit according to claim 2, wherein the PD protocol chip is connected to a port manager through an I2C, the port manager being connected to an external interface device to implement charging and data transfer functions.
4. The motherboard circuit according to claim 1, wherein a power supply pin of the audio power amplifier is connected to the power supply circuit, and an output voltage of the audio power amplifier is 10.25V and an output power is 5.3W.
5. The main board circuit of claim 1, wherein the main control chip is further connected with a communication module through a bus in a communication manner, the communication module comprises a WIFI6 module, and the WIFI6 module is connected with the main control chip through an SD signal communication manner.
6. The motherboard circuit of claim 1, wherein the BAT pin of the main charging chip is connected to the VBAT pin of the peripheral circuit to monitor the voltage of the external power source in real time, the SW pin of the main charging chip is connected to the VSYS pin of the main control chip to realize the switching control of the main charging chip by the main control chip, and the PSEL pin of the main charging chip is connected to the REGN pin of the main control chip to realize the control of the charging voltage by the main control chip.
7. The motherboard circuit of claim 6, wherein the BAT pin of the secondary charging chip is connected to the VBAT pin of the peripheral circuit to monitor the voltage of the external power source in real time, and the SW pin of the primary charging chip is connected to the VSYS pin of the main control chip to realize the on-off control of the secondary charging chip by the main control chip.
8. The motherboard circuit of claim 2, wherein the PD protocol chip is integrated with a USBPD physical layer, the PD protocol chip supporting DFP, UFP and DRP modes.
9. A motherboard comprising a motherboard circuit as claimed in any one of claims 1 to 8, wherein the motherboard comprises a PCB on which the motherboard circuit is printed.
10. The motherboard of claim 9, wherein a charging interface and a microphone are disposed on the PCB, the charging interface being connected to the charging module, the microphone being connected to the audio module.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221352078U true CN221352078U (en) | 2024-07-16 |
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