CN210327098U

CN210327098U - Charging device and charging assembly adopting USB PD

Info

Publication number: CN210327098U
Application number: CN201921535673.1U
Authority: CN
Inventors: 陶红霞
Original assignee: Shanghai Yaohuo Microelectronics Co Ltd
Current assignee: Shanghai Yaohuo Microelectronics Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-04-14
Anticipated expiration: 2029-09-16

Abstract

The utility model provides a charging device and a charging component adopting USB PD, which comprises a Type A female seat for connecting a cable, wherein a USB PD transceiver module and a chip CC pin are arranged in a USB PD communication chip; the female socket CC foot can be directly or indirectly connected with the cable chip when the Type A male connector is connected into the Type A female socket; the chip CC foot is connected with the USB PD transceiver module and the female seat CC foot in the Type A female seat respectively. The utility model discloses a battery charging outfit can satisfy the demand based on USB PD's quick charge when adopting the female seat of Type A. In the alternative, the number of the chip CC pins can be limited to one, and the chip VBUS pin and the VCONN pin and the related circuits thereof can be prevented from being configured in the chip, so that the cost can be effectively reduced, and the occupied area of the circuit board can be reduced.

Description

Charging device and charging assembly adopting USB PD

Technical Field

The utility model relates to an electronic equipment's field of charging especially relates to an adopt USB PD's battery charging outfit and subassembly that charges.

Background

The USB PD is specifically as follows: USB Power Delivery, which may be understood as a Power transfer protocol. It is a fast charging specification established by the USB-IF organization, which can support fast charging with higher power. In the art, USB PD is often applied to fast charge a device to be charged having a Type C interface. Further, for example, a device to be charged that uses a Type C interface such as a Mac computer is generally charged using a cable having both ends using the Type C interface and a charging device equipped with a Type C female receptacle.

However, most of the charging devices in the prior art adopt a Type a female socket due to various considerations (such as cost and compatibility with old products), and furthermore, cables with different connectors can be used between the device of the Type C interface and the charging device, one end of the cable adopts a Type a male connector, and the other end of the cable adopts a Type C male connector, so that the cable can also be understood as an a-C cable.

Among the prior art, for the adaptation in the public head of ordinary Type A, the pin in the female seat of Type A has four pins usually, is respectively: a voltage pin (namely a VBUS pin), a data line positive electrode pin (namely a D + pin), a data line negative electrode pin (namely a D-pin) and a grounding pin (namely a GND pin).

It can be seen that, because the Type a female socket of the charging device is not usually configured with the relevant pins required to implement USB PD, this Type of charging device cannot implement fast charging based on USB PD, although the charging device can be connected to and charge the device to be charged through the corresponding cable.

SUMMERY OF THE UTILITY MODEL

The utility model provides an adopt USB PD's battery charging outfit and subassembly that charges to solve the unable problem that realizes quick charge based on USB PD.

According to the first aspect of the utility model, a charging device adopting USB PD is provided, which comprises a Type A female seat for connecting a cable, wherein the first end of the cable is connected with the Type A female seat through a Type A male head, the second end of the cable is connected with a device to be charged through a Type C male head, and a cable chip is arranged in the cable;

the charging equipment further comprises a USB PD communication chip, a female seat CC pin is arranged in the TypeA female seat, and a USB PD transceiving module and a chip CC pin are arranged in the USB PD communication chip;

the female seat CC foot can be directly or indirectly connected with a CC line or an ID line of the cable when the Type A male connector is connected into the Type A female seat, and can be connected to a related cable chip through the CC line or the ID line;

the chip CC foot is connected with the USB PD transceiver module and the female seat CC foot in the Type A female seat respectively.

Optionally, the number of the chip CC pins is one, a chip VBUS pin is not provided in the USB PD communication chip, and a VCONN pin capable of supplying power to the cable chip is not provided in the USB PD communication chip.

Optionally, be equipped with female seat VBUS foot in the female seat of Type A, female seat VBUS foot can be in the public head of Type A inserts directly or indirectly be connected to during the female seat of Type A the cable chip, for the power supply of cable chip.

Optionally, the charging device further includes a controller, and the USB PD transceiver module is connected to the controller through an I2C interface; wherein the I2C interface comprises an interrupt pin, and the interrupt pin is connected with the first GPIO of the controller.

Optionally, the chip CC pin is connected to the interrupt pin, so that: the controller can implement communication and identification of the cable chip when the first GPIO, the chip CC pin, the female seat CC pin and the cable chip are sequentially connected, and a low-voltage switch controlled by the controller is further arranged between the chip CC pin and the interrupt pin.

Optionally, a high-voltage switch is further disposed in the USB PD chip, the high-voltage switch is disposed between the CC pin of the chip and the low-voltage switch, and one end of the high-voltage switch connected to the low-voltage switch is further connected to the USB PD transceiver module.

Optionally, the second GPIO of the controller is connected to the female socket CC pin through a high voltage switch, so that: the controller can implement communication and identification of the cable chip when the second GPIO, the female socket CC pin and the cable chip are sequentially connected, and the high-voltage switch can be turned off when overvoltage occurs.

Optionally, an ID pin is further disposed in the Type a female socket, and the ID pin can be directly or indirectly connected to the cable chip when the cable is connected to the Type a female socket;

the second GPIO of the controller connects the ID pin such that: the controller can implement communication and identification of the cable chip when the second GPIO, the female socket CC pin and the cable chip are sequentially connected.

Optionally, the I2C interface further includes an I2C data pin and an I2C clock pin, the I2C data pin is connected to the controller data pin of the controller, and the I2C clock pin is connected to the controller clock pin of the controller.

According to a second aspect of the present invention, there is provided a charging assembly comprising a charging device employing a USB PD and the cable to which the first aspect and its alternative relate.

The utility model provides an adopt USB PD's battery charging outfit and charging assembly, configured female seat CC foot in battery charging outfit's Type A female seat to USB PD communication chip has been configured in battery charging outfit, the utility model discloses USB PD transceiver module accessible chip CC foot among the USB PD communication chip is connected to CC line or ID line and cable chip in the cable with female seat CC foot, and then, the utility model discloses can provide the hardware basis for USB PD's communication, make the utility model discloses a battery charging outfit can satisfy the demand based on USB PD's quick charge when adopting Type A female seat.

Further, in the alternative, still can be based on the utility model relates to a battery charging outfit's application scenario, improve USB PD communication chip, for example, can limit the quantity of chip CC foot to one, still can avoid disposing chip VBUS foot and VCONN foot in the chip to and relevant circuit thereof, and then, effectively reduce cost to reduce circuit board area occupied.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a first schematic structural diagram of a charging device and a cable according to an embodiment of the present invention, wherein the charging device and the cable are configured to employ a USB PD;

fig. 2 is a first schematic structural diagram of a charging device using a USB PD according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a charging device using a USB PD according to an embodiment of the present invention;

fig. 4 is a second schematic structural diagram of a charging device and a cable using a USB PD according to an embodiment of the present invention;

fig. 5 is a third schematic structural diagram of a charging device using a USB PD according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a charging device using a USB PD according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a charging device employing a USB PD according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a connection mode of the high voltage switch HV SW according to an embodiment of the present invention.

Description of reference numerals:

1-a charging device;

11-Type A female seat;

111-female CC pin;

12-a USB PD communication chip;

121-USB PD transceiver module;

122-chip CC pin;

123-I2C interface;

1231-broken foot;

1232-I2C clock pin;

1233-I2C data Pin;

124-low voltage switch;

13-a controller;

14-a high voltage switch;

2-a cable;

21-Type A male;

22-cable chip 22;

HW SW 1-first high voltage switch;

HW SW 2-second high voltage switch;

HV SW 3-third high voltage switch;

LV SW-low voltage switch;

HV SW-high voltage switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 1 is a first schematic structural diagram of a charging device and a cable using a USB PD according to an embodiment of the present invention.

Referring to fig. 1, the charging device using the USB PD provided in this embodiment can charge a device to be charged, wherein the charging device and the device to be charged can be connected through a cable.

The device to be charged can be understood as any electronic device with a Type C interface, for example, a computer, a tablet computer, a mobile phone, an in-vehicle device or any other electronic device with a Type C interface.

The cable 2 can be understood as any cable configured with a Type a male connector 21 and a Type C male connector and a cable chip 22, and the material, structure and the like of the cable can be any. Specifically, the first end of the cable 2 is connected with the Type a female socket 11 in the charging device 1 through the Type a male connector 21, and the second end of the cable 2 is connected with the device to be charged (not shown) through the Type C male connector 21.

Therefore, the cable 2 related to the embodiment can be characterized as an A-C cable, and the opposite cable with two ends adopting a Type C male connector can be characterized as a C-C cable.

Dispose cable chip 22 in the cable 2, cable chip 22 can directly or indirectly connect the public head of Type A, simultaneously, the public head of Type C can directly or indirectly be connected to the public head of Type A, and cable chip 22 also can be connected to the public head of Type C to the public head of CC foot of the public head of Type A and the public head of Type C of Type A are taken as the example, accessible CC line connection between the public head of CC foot of Type A of cable and the public head of CC foot of Type C, and corresponding cable chip 22 can be connected to this CC line. The specific construction of the cable 2 can be understood with reference to prior art related cables.

Need discern the cable when heavy current is used, the identification mode of the cable of different equipment brands is different, and some are the built-in dedicated single-line communication chip of cable, and some then adopt the electronic tags chip of Type C standard. Thus, the cable chip may be, for example, an electronic tag chip or a single-wire communication chip. The single-wire communication chip can be understood as a data processing chip used in single-wire communication, and the single-wire communication can be understood as a communication mode which can be completed by using a single signal wire according to a communication rate, a signal specification, a master-slave mode and the like which are stipulated in advance when digital signal communication is performed between devices. The electronic tag chip can be characterized as an eMarker chip.

Any cable known or developed in the art that meets the above description does not depart from the description of the present embodiments.

The charging device may be any power supply device suitable for charging the USB PD, and may be a device dedicated for charging, such as a travel adapter, a mobile power supply, a power socket, a vehicle-mounted cigarette lighter, a charger, or the like, or an electronic device that is not dedicated for charging but is available for charging, such as a computer, a tablet computer, a mobile phone, a vehicle-mounted device, or any other electronic device that can charge other devices.

The travel adapter is understood to be an ac-to-dc converted power supply product, which may be a standard accessory in a cell phone case. The charger can be understood as various power supply products capable of supplying power to electronic equipment such as a mobile phone and the like.

In this embodiment, the charging device 1 includes a Type a female socket 11 and a USB PD communication chip 12 for accessing the cable 2; the USB PD communication chip 12 is provided with a USB PD transceiving module 121 and a chip CC pin 122; be equipped with female seat CC foot 111 in the female seat 11 of Type A.

Further, the USB PD communication chip 12 can be understood as any chip configured with the USB PD transceiver module 121 and the chip CC pin 122; USB PD transceiver module 121 may be understood as any integrated circuit module for receiving and transmitting digital signals in USB PD physical layer and link layer specifications.

Female seat CC foot 111 can be in the public first 21 of Type A inserts when the female seat 111 of Type A direct or indirect connection CC line or ID line in the cable, and can be through CC line or ID line connection to relevant cable chip 22 to the CC line is the example, and accessible Type A is public first 21 and is connected the CC foot in the Type A connects, and this CC foot can be through the CC line connection Type C is public first CC foot, but this CC line connection cable chip 22. Meanwhile, the chip CC pins 122 are respectively connected to the USB PD transceiver module 121 and the female CC pins 111 in the Type a female socket 11.

Female seat of Type A can understand for the public first (the public first of Type A) male structure of Type A that can compatible standard, promptly: the female seat of Type A can guarantee that VBUS foot, D-foot, D + foot and GND foot between public head and the female seat reliably connect respectively.

It can be seen that the USB PD transceiver module in the USB PD communication chip of this embodiment can be connected to the CC line or the ID line of cable and relevant chip through chip CC pin and female seat CC pin, and then, this embodiment can provide the hardware basis for the communication of USB PD for this embodiment can satisfy the demand based on the quick charge of USB PD when adopting Type a female seat.

Regarding the CC pin, CC is specifically: the Configuration Channel, and thus the CC leg, may be specifically understood as: and configuring channel pins. Through the CC foot, conveniently support USB PD communication and realize functions such as cable discernment.

Fig. 2 is a first schematic structural diagram of a charging device using a USB PD according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of a charging device using a USB PD according to an embodiment of the present invention.

Referring to fig. 2 and fig. 3, in an embodiment, the charging device 1 may further include a controller 13, and the USBPD transceiver module 121 is connected to the controller 13 through an I2C interface 123.

I2C in I2C interface 123, which may also be characterized as IIC or I2C, may be understood to be the International Universal Integrated Circuit communication digital interface. I2C, more particularly, is understood to be a two-wire serial bus in which the signal transmission required by the I2C bus protocol can be generated by controlling the high and low level timing of the clock pin and the data pin.

Furthermore, if the USB PD transceiver module 121 is connected to the controller 13 through the I2C interface 123, then: USB PD transceiver module 121 may also be configured to enable logical control of communications over I2C interface 123.

In one embodiment, the I2C interface 123 includes an I2C data pin 1233 and an I2C clock pin 1232 and an interrupt pin 1231, the interrupt pin 1231 is connected to the first GPIO of the controller 13, the I2C data pin 1233 is connected to the controller data pin of the controller 13, and the I2C clock pin 1232 is connected to the controller clock pin of the controller 13.

The first GPIO may be characterized by a GPIO1 pin, the second GPIO may be characterized by a GPIO2 pin, the controller data pin may be characterized by an SDA pin in the controller 13, the controller clock pin may be characterized by a CLK pin in the controller 13, and the interrupt pin may be characterized by an INTB pin, where INTB is particularly an effective interrupt pin for low-level interrupts.

Referring to fig. 2 and 3, the second GPIO of the controller 13 is connected to the female socket CC pin 111 through the high voltage switch 14, so that: the communication and identification of the controller 13 to the cable chip 22 can be implemented when the second GPIO, the female CC pin 111 and the cable chip 22 are sequentially turned on, and the high-voltage switch 14 can be turned off at the time of overvoltage.

Meanwhile, since the GPIO2 pin of the controller 13 is generally not able to withstand high voltage, the high voltage switch 14 is also required to withstand high voltage and have a protection function of turning off the high voltage switch 14 by overvoltage. Furthermore, in order to allow for different cable identification modes, the female CC pin 111 may be connected to the controller 13 via a high voltage switch 14 with overvoltage protection, through which the single wire communication identification may be handled by the controller 13.

In the specific implementation process, VBUS foot, D-foot, D + foot and GND foot of the female seat 11 of Type A can be the pin that all adopts in the ordinary Type A interface, compare this, and the female seat of Type A has increased a CC foot in addition in this embodiment (its also can characterize as the ID foot), and then, the female seat of Type A of this embodiment has realized: the USB PD communication and the realization of cable identification are conveniently supported through the added CC foot by the USB Type A interface compatible with the standard.

The USB PD communication chip may be an existing chip that is applied to a C-C cable and used when the USB PD is implemented to be quickly charged, that is: the USB PD communication chip shown in fig. 3 can be implemented by using an existing chip.

In the embodiment of FIG. 3, the first high voltage switch may be characterized by HW SW1, the second high voltage switch may be characterized by HW SW2, and the third high voltage switch may be characterized by HV SW3, i.e., the high voltage switch 14 of FIG. 2. The first chip CC pin may also be characterized by pin CC1 and the second chip CC pin may also be characterized by pin CC2, both of which may be satisfied as described above with respect to chip CC pin 122.

Referring to fig. 3, the pin CC1 may be connected to the USB PD transceiver module 121 through a first high voltage switch HW 1, the pin CC2 may be connected to the USB PD transceiver module 121 through a second high voltage switch HW 2, and further, the first high voltage switch HWSW1 and the second high voltage switch HW SW2 may be respectively used to provide the high voltage protection functions of the pin CC1 and the pin CC 2. Furthermore, the physical layer and the link layer of the USB PD can be realized by the USB PD transceiver module, and the high-voltage protection function of the pin CC1 and the pin CC2 can be provided by two high-voltage switches, and at the same time, the complete USB PD function can be realized together with the controller 13 via the I2C interface 123.

Fig. 4 is a second schematic structural diagram of a charging device and a cable using a USB PD according to an embodiment of the present invention; fig. 5 is a third schematic structural diagram of a charging device using a USB PD according to an embodiment of the present invention.

The chip shown in fig. 3 may be existing, and furthermore, it is dedicated to implementing standard USB PD communication, and it may also be understood that the chip is adapted to Type C cables, or to Type C female sockets.

It can be seen that when the Type a female socket is used, there is one more CC (i.e. one corresponding to the CC2 pin shown in fig. 3), thereby increasing the cost pressure and the circuit area of the system.

Therefore, in the embodiments shown in fig. 4 and fig. 5, one path of CC may be omitted, and in one embodiment, the number of the chip CC pins 122 may be one.

Meanwhile, the VBUS pin for detecting the power pin state of the cable and the internal circuit in the USB PD communication chip 12 are also redundant, so in the embodiment shown in fig. 4 and 5, the VBUS pin can also be omitted in the USB PD communication chip 12, that is: and a chip VBUS pin is not arranged in the USB PD communication chip. Further, the omission of the VBUS pin may be understood as the omission of the VBUS pin itself, as well as its associated circuitry.

In one embodiment, considering that the VBUS pin of the Type a female socket can also directly supply power to a cable chip, such as an electronic tag chip, in the cable, the VCONN pin and the internal circuit for supplying power to the standard C-C cable with the electronic tag chip are also redundant in the embodiment shown in fig. 4. Therefore, in the embodiment shown in fig. 4 and 5, the USB PD communication chip 12 may also omit the VCONN pin, that is: the USB PD communication chip is not provided with a VCONN pin capable of supplying power to the cable chip. Further, the omission of the VCONN pin may be understood as the omission of the VCONN pin itself, and its associated circuitry.

In a specific implementation process, referring to fig. 4, a female VBUS pin 112 is disposed in the Type a female socket 11, and the female VBUS pin 112 can be directly or indirectly connected to the cable chip 22 when the Type a male connector 21 is connected to the Type a female socket 11, so as to supply power to the cable chip 22, which may specifically be a cable chip such as an electronic tag chip.

Therefore, the above embodiment may further improve the USB PD communication chip based on the application scenario of the charging device according to this embodiment, limit the number of CC pins of the chip to one, and further avoid configuring VBUS pins and VCONN pins of the chip in the chip, thereby effectively reducing the cost and reducing the occupied area of the circuit board.

Specifically, compared with the existing chip, in the embodiments shown in fig. 5 and fig. 6 and fig. 7, three pins of the chip can be reduced (i.e. the CC2 pin, the VBUS pin and the VCONN pin in the chip are omitted), for example, from 9 to 6 pins, which greatly reduces the area of the chip, and the fewer pins are also just convenient for matching the reduced area of the chip, wherein the area reduction effect of the two power channel switches with larger current capacity, which are required for omitting the VCONN pin and supporting the VCONN function, is particularly included.

In addition, less pins are more convenient to select other mature and large-output-quantity packaging forms in the market, so that the cost is further reduced.

In addition to the above omission of components, other matters in the embodiment shown in fig. 5 can be understood with reference to the description related to fig. 3.

Fig. 6 is a schematic structural diagram of a charging device using a USB PD according to an embodiment of the present invention; fig. 7 is a schematic structural diagram of a charging device employing a USB PD according to an embodiment of the present invention.

Referring to fig. 6 and 7, the chip CC pin 122 is connected to the interrupt pin 1231 such that: the communication and identification of the controller 13 to the cable chip 22 can be implemented when the first GPIO, the chip CC pin 122, the female CC pin 111 and the cable chip 22 are sequentially turned on, and a low-voltage switch 124 controlled by the controller 13 is further disposed between the chip CC pin 122 and the interrupt pin 1231.

In fig. 7, the low voltage switch 124 may be characterized by LW SW in the chip, with CC in the chip characterizing the unique chip CC pin.

The I2C interface 123 can be understood as shown in fig. 2, that is, it may also include an I2C data pin 1233 and an IOC clock pin 1232, and further, the controller 13 may configure turning off and turning on of the low voltage switch 124 in the chip, and the low voltage switch 124 (i.e., T the low voltage switch LV SW in the chip shown in fig. 7) is in an off state by default, when the I2C interface 123 fully connects the controller and the USB PD transceiver module 121.

The chip CC pin 122 may be used for USB PD communication and interaction and identification of a Type C electronic tag chip of the cable, and under a certain condition, the controller 13 turns on the low voltage switch 124 (i.e., the low voltage switch LV SW in the chip); when the low-voltage switch 124 is turned on, the interrupt pin 1231 and the chip CC pin 122 may be connected, and at this time, the controller may communicate and identify with a cable chip, such as a single-wire communication chip, in the cable through the first GPIO, and in a specific example, may further execute an encryption/decryption algorithm and read and control logic level states of other input and output functional pins of the single-wire communication chip in the cable.

Compared with the means shown in fig. 2 to 5, the above embodiment can combine the functions of controlling and identifying the cable by the controller realized by the original third high-voltage switch HV SW3 and the related circuits through one low-voltage switch 124 and the related circuits, further saving the cost, and simultaneously, the above embodiment can occupy less GPIO pins of the controller 13, and further can reduce the number of external pins of the controller, thereby being convenient for reducing the cost and realizing the controller with lower selling price.

In a specific implementation process, please refer to fig. 7, a high voltage switch, i.e., the high voltage switch HV SW in the chip shown in fig. 7, is further disposed in the USB PD communication chip 12, the high voltage switch is disposed between the chip CC pin 122 and the low voltage switch 124, and one end of the high voltage switch connected to the low voltage switch 124 is further connected to the USB PD transceiver module 121. The functions of the high-voltage switch can be understood by referring to the functions of the first high-voltage switch HW SW1 and the second high-voltage switch HW SW2 in fig. 3, and also can be understood by referring to the functions and connection modes of the high-voltage switches in the same position in the existing USB PD transceiver module suitable for Type C to Type C cables. The connection and function of the high voltage switch HV SW with respect to the USB PD transceiver module will be described with reference to fig. 8 and the related description.

Only the parts related to the connection mode and the function of the high voltage switch HV SW are illustrated in fig. 8, and for the sake of targeted illustration, other circuit parts in the module are characterized by other circuits 1211, and the representation of other connection contents is omitted, and for the parts which are not illustrated and are illustrated, both the parts can be understood by referring to the related existing chip.

Taking fig. 8 as an example, the USB PD transceiver module 121 may be provided with two resistors and a switch, that is, the illustrated resistor R1, the resistor R2 and the switch N1, the resistor R2 is grounded through the switch N1, the gate of the switch N1 is connected between the high-voltage switch HV SW and the pin of the chip CC through the resistor R1, and is further connected to the other circuit 1211, and the second resistor is further connected between the high-voltage switch HV SW and the pin of the chip CC.

Through the above embodiments, it can be ensured that the USB PD communication chip can also support a dead battery mode when there is no power at all, wherein, for the end of the high voltage switch HV SW connected to the USB PD transceiver module, a signal can enter the low voltage-withstanding comparator & DAC circuit, the pull-up current source circuit or the BMC transceiver circuit (which may be part of the other circuits 1211 in fig. 8) of the USB PD transceiver module after being protected by the high voltage switch. For one end of the high-voltage switch HV SW connected to the pin CC of the chip, the signal is not protected and enters the USB PD transceiver module and then enters the UFP pull-down resistor control circuit (which may be, for example, the part shown by the resistor R1, the resistor R2, and the switch N1 in fig. 8), so that it is ensured that when the chip is not powered, the pull-down resistor can also be turned on to declare itself to be UFP, so as to receive the external host for charging.

In alternative implementations, the high voltage switch HVSW of fig. 7 may not be used in the implementation of fig. 6.

In addition, the GPIO pin in the controller 13 may be used to characterize the first GPIO in fig. 6 and 7, the SDA pin in the controller 13 to characterize the controller data pin, the CLK pin in the controller 13 to characterize the controller clock pin, and the INTB pin to characterize the interrupt pin, wherein INTB is specifically an effective interrupt pin for low-level interrupts.

In another non-illustrated embodiment, an ID pin may be further disposed in the Type a female socket, and the ID pin may be directly or indirectly connected to the cable chip when the cable is connected to the Type a female socket; the second GPIO of the controller connects the ID pin such that: the controller can implement communication and identification of the cable chip when the second GPIO, the female socket CC pin and the cable chip are sequentially connected.

The present embodiment also provides a charging assembly including the charging device employing the USB PD according to the first aspect and the alternatives thereof, and the cable.

To sum up, the utility model provides an adopt USB PD's battery charging outfit and charging assembly has configured female seat CC foot in battery charging outfit's Type A female seat to USB PD communication chip has been configured in battery charging outfit, the utility model discloses USB PD transceiver module accessible chip CC foot among the USB PD communication chip is connected to the CC line or the ID line and the relevant cable chip of cable with female seat CC foot, and then, the utility model discloses can provide the hardware basis for USB PD's communication, make the utility model discloses a battery charging outfit can satisfy the demand based on USB PD's quick charge when adopting Type A female seat.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A charging device adopting a USB PD comprises a Type A female seat for connecting a cable, wherein a first end of the cable is connected with the Type A female seat through a Type A male head, a second end of the cable is connected with a device to be charged through a Type C male head, and a cable chip is configured in the cable; the charging equipment is characterized by further comprising a USB PD communication chip, wherein a female seat CC pin is arranged in the Type A female seat, and a USB PD transceiving module and a chip CC pin are arranged in the USB PD communication chip;

the female seat CC foot can be directly or indirectly connected with a CC line or an ID line in the cable when the Type A male connector is connected into the Type A female seat, and can be connected to a related cable chip through the CC line or the ID line;

2. The charging apparatus as claimed in claim 1, wherein the number of the chip CC pins is one, and the USB PD communication chip has no chip VBUS pin, and the USB PD communication chip has no VCONN pin capable of supplying power to the cable chip.

3. The charging apparatus according to claim 2, characterized in that; be equipped with female seat VBUS foot in the female seat of Type A, female seat VBUS foot can the public head of Type A inserts direct or indirect connection to during the female seat of Type A cable chip, for the cable chip power supply.

4. The charging device of claim 1, further comprising a controller, wherein the USB PD transceiver module is connected to the controller via an I2C interface; wherein the I2C interface comprises an interrupt pin, and the interrupt pin is connected with the first GPIO of the controller.

5. The charging device of claim 4, wherein the chip CC pin is connected to the interrupt pin such that: the controller can implement communication and identification of the cable chip when the first GPIO, the chip CC pin, the female seat CC pin and the cable chip are sequentially connected, and a low-voltage switch controlled by the controller is further arranged between the chip CC pin and the interrupt pin.

6. The charging device according to claim 5, wherein a high voltage switch is further disposed in the USB PD chip, the high voltage switch is disposed between the CC pin of the chip and the low voltage switch, and one end of the high voltage switch connected to the low voltage switch is further connected to the USB PD transceiver module.

7. The charging device of claim 4, wherein the second GPIO of the controller is connected to the female socket CC pin through a high voltage switch such that: the controller can implement communication and identification of the cable chip when the second GPIO, the female socket CC pin and the cable chip are sequentially connected, and the high-voltage switch can be turned off when overvoltage occurs.

8. The charging device according to claim 4, wherein an ID pin is further arranged in the Type A female socket and can be directly or indirectly connected to the cable chip when the cable is connected into the Type A female socket;

9. The charging device of any one of claims 4 to 8, wherein the I2C interface further comprises an I2C data pin and an I2C clock pin, the I2C data pin is connected to a controller data pin of the controller, and the I2C clock pin is connected to a controller clock pin of the controller.

10. A charging assembly comprising the charging device employing a USB PD according to any one of claims 1 to 9 and the cable.