CN220711308U - Charging control chip and charging control circuit - Google Patents
Charging control chip and charging control circuit Download PDFInfo
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- CN220711308U CN220711308U CN202321407080.3U CN202321407080U CN220711308U CN 220711308 U CN220711308 U CN 220711308U CN 202321407080 U CN202321407080 U CN 202321407080U CN 220711308 U CN220711308 U CN 220711308U
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Abstract
The utility model discloses a charging control chip and a charging control circuit, and relates to the technical field of charging circuits. The charging control chip comprises a communication pin and a control pin, wherein the communication pin is used for being electrically connected with the charging equipment, receives a charging starting instruction or a charging closing instruction sent by the charging equipment through the communication pin, and generates a corresponding charging starting signal or a corresponding charging closing signal according to the charging starting instruction or the charging closing instruction; the control pin is used for being connected with the charge control switch and the adapter electricity, and the charge control chip will open the charge signal or close the charge signal and send to the charge control switch through the control pin to and detect the voltage of adapter through the control pin and obtain the detected signal, and send the detected signal to charging equipment through communication pin. According to the charging control chip, the same control pins are multiplexed, so that the pin number of the charging control chip is reduced.
Description
Technical Field
The present disclosure relates to charging circuits, and particularly to a charging control chip and a charging control circuit.
Background
The existing charging control chip needs a special VCC port to detect the power supply voltage, as shown in fig. 1, the charging control chip 10 is provided with a first pin 11, a second pin 12 and a third pin 13, wherein the third pin 13 is used for controlling whether the charging control switch 20 (PMOS transistor) is turned on, the second pin 12 (i.e. the power supply pin) is used for detecting the voltage of the adapter 30, and the charging device 40 sends an instruction whether to energize or receives the voltage of the adapter 30 detected by the second pin 12 to the third pin 13 through the first pin 11. The charge control switch 20 and the detection adapter 30 voltage need to occupy one pin (i.e., the second pin 12 and the third pin 13) of the charge control chip 10, respectively.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide a charging control chip and a charging control circuit, which are used for multiplexing pins of the charging control chip and reducing the number of the pins of the charging control chip.
According to a first aspect of the present utility model, there is provided a charge control chip comprising:
the charging control chip receives an opening charging instruction or a closing charging instruction sent by the charging equipment through the communication pin, and generates a corresponding opening charging signal or closing charging signal according to the opening charging instruction or the closing charging instruction;
the charging control chip is used for sending the charging starting signal or the charging closing signal to the charging control switch through the control pin, detecting the voltage of the adapter through the control pin to obtain a detection signal, and sending the detection signal to the charging equipment through the communication pin.
According to the charging control chip, the same control pins are multiplexed, so that the pin number of the charging control chip is reduced.
In some embodiments, the charge control chip further comprises:
the first end of the control circuit is electrically connected with the control pin, and the control circuit is used for generating a corresponding starting charging signal according to the received starting charging instruction;
the first end of the detection circuit is electrically connected with the control pin, and the detection circuit is used for detecting the voltage of the adapter and obtaining the detection signal;
the first selection switch is respectively and electrically connected with the second end of the control circuit, the second end of the detection circuit and the communication pin, and the charging control chip controls the first selection switch to conduct the communication pin and the control circuit according to the opening charging instruction or controls the first selection switch to conduct the communication pin and the detection circuit according to the closing charging instruction.
In some embodiments, the charging control chip further includes a second selection switch, where the second selection switch is electrically connected between the first end of the control circuit, the first end of the detection circuit, and the control pin, and the charging control chip controls the second selection switch to turn on the control circuit and the control pin according to the on charging instruction, or controls the second selection switch to turn on the detection circuit and the control pin according to the off charging instruction. Thus, the detection circuit can be prevented from operating at the time of normal charging.
In some embodiments, the charge control chip further comprises:
the first end of the detection circuit is electrically connected with the control pin, and the detection circuit is used for detecting the voltage of the adapter and obtaining the detection signal;
the first selection switch is respectively and electrically connected with the second end of the detection circuit, the control pin and the communication pin, and the charging control chip controls the first selection switch to conduct the communication pin and the control pin according to the opening charging instruction or controls the first selection switch to conduct the communication pin and the detection circuit according to the closing charging instruction. Thus, the control circuit can be reduced, and the cost can be reduced.
In some embodiments, the charging control chip further includes a second selection switch, where the second selection switch is electrically connected between the first end of the detection circuit, the first selection switch, and the control pin, and the charging control chip controls the second selection switch to cooperate with the first selection switch to switch on the communication pin and the control pin according to the on charging instruction, or controls the second selection switch to switch on the detection circuit and the control pin according to the off charging instruction. Thus, the detection circuit can be prevented from operating at the time of normal charging.
In some embodiments, the detection circuit is a window comparator.
In some embodiments, the detection circuit is a threshold comparison circuit.
In some embodiments, the on charge signal is a low level signal and the off charge signal is a high impedance signal.
In some embodiments, the charging device generates the on charging instruction or the off charging instruction according to the detection signal.
According to a second aspect of the present utility model, there is provided a charge control circuit comprising:
the charging control chip is electrically connected with the charging equipment through the communication pin, receives a charging starting instruction or a charging closing instruction sent by the charging equipment through the communication pin, and generates a corresponding charging starting signal or a corresponding charging closing signal according to the charging starting instruction or the charging closing instruction;
the control end of the charging control switch is electrically connected with the control pin, the first end of the charging control switch is used for being electrically connected with the adapter, the second end of the charging control switch is used for being electrically connected with the charging equipment, and the charging control switch conducts the adapter and the charging equipment to charge the charging equipment according to the opening charging signal or disconnects the adapter and the charging equipment to stop charging the charging equipment according to the closing charging signal;
the first end of the first resistor is electrically connected with the adapter, the second end of the first resistor is electrically connected with the control pin, and when the charging control switch disconnects the adapter and the charging equipment according to the charging closing signal, the charging control chip also detects the voltage of the adapter through the control pin to obtain a detection signal and sends the detection signal to the charging equipment through the communication pin;
and the second resistor is connected in parallel with the first end and the second end of the charging control switch, and provides electric energy for the charging equipment when the charging equipment is in a shutdown state or a low-power state and cannot be charged.
Compared with the prior art, the charging control chip and the charging control circuit reduce the pin number of the charging control chip by multiplexing the same control pins.
Drawings
Fig. 1 is a schematic diagram of circuit connection between a charging control chip and an adapter and a charging device in the prior art;
fig. 2 is a schematic diagram of a pin of a charge control chip according to a first embodiment of the present utility model;
fig. 3 is a circuit schematic of a charge control chip according to a first embodiment of the utility model;
fig. 4 is a circuit schematic diagram of a charge control chip according to a second embodiment of the utility model;
fig. 5 is a circuit schematic diagram of a charge control chip according to a third embodiment of the present utility model;
fig. 6 is a circuit schematic diagram of a charge control chip according to a fourth embodiment of the present utility model;
fig. 7 is a circuit diagram of a charge control circuit according to a fifth embodiment of the present utility model.
Reference numerals illustrate: the charging control chip 100, the communication pin 110, the control pin 120, the control circuit 130, the detection circuit 140, the first selection switch 150, the second selection switch 160, the charging control switch 200, the charging device 300 and the adapter 400.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
Embodiment one:
fig. 2-3 schematically illustrate a charge control chip according to one embodiment of the utility model. As shown in fig. 2, the charge control chip 100 includes a communication pin 110 (i.e., pin 1) and a control pin 120 (i.e., pin 2); the communication pin 110 is used for being electrically connected with the charging device, the charging control chip 100 receives an on-charging instruction or an off-charging instruction sent by the charging device through the communication pin 110, and when the on-charging instruction is received, the charging control chip 100 generates a corresponding on-charging signal according to the received on-charging instruction, or when the off-charging instruction is received, the charging control chip 100 generates a corresponding off-charging signal according to the received off-charging instruction. The charging equipment can be mobile phones, notebook computers, tablets and other equipment.
The control pin 120 is used for electrically connecting with the charging control switch, and the charging control chip 100 sends a charging signal to the charging control switch through the control pin 120; and the control pin 120 is further configured to be electrically connected to the adapter, and the charging control chip 100 is further configured to detect a voltage of the adapter through the control pin 120 to obtain a corresponding detection signal, and send the detected detection signal to the charging device through the communication pin 110.
As shown in fig. 3, the charge control chip 100 further includes a control circuit 130, a detection circuit 140, and a first selection switch 150; the first end of the control circuit 130 is electrically connected to the control pin 120, the control circuit 130 is configured to generate a corresponding start charging signal according to the received start charging instruction, the generated start charging signal is sent to the charging control switch through the control pin 120 electrically connected to the first end of the control circuit 130, and the charging control switch turns on the adapter and the charging device when receiving the start charging signal, so as to charge the charging device.
The first end of the detection circuit 140 is also electrically connected to the control pin 120, the detection circuit 140 is electrically connected to the adapter through the control pin 120, and the detection circuit 140 is configured to detect the voltage of the adapter and obtain a corresponding detection signal. The detection circuit 140 may be a window comparator, which is configured to compare the detected voltage value of the adapter with a preset range value, and obtain a comparison result (i.e. a detection signal). In addition, the detection circuit 140 may also be a threshold comparison circuit, and the threshold comparison circuit correspondingly compares the detected voltage value of the adapter with a preset value and obtains a corresponding comparison result (i.e. a detection signal). Of course, the detection circuit 140 may be a circuit for directly detecting the voltage value, in addition to the window comparator and the threshold value comparison circuit described above, and may be a circuit for obtaining a corresponding detected voltage value (i.e., a detection signal).
The first selection switch 150 has a common end and at least two branch ends, wherein the two branch ends of the first selection switch 150 are respectively and electrically connected with the second end of the control circuit 130 and the second end of the detection circuit 140, the common end of the first selection switch 150 is electrically connected with the communication pin 110, the charging control chip 100 controls the first selection switch 150 to conduct the communication pin 110 and the control circuit 130 according to the received charging starting instruction, the control circuit 130 generates a corresponding charging starting signal and sends the charging starting signal to the charging control switch through the control pin 120, and the charging control switch conducts the adapter and the charging equipment when receiving the charging starting signal to charge the charging equipment; or the charging control chip 100 controls the first selection switch 150 to switch on the communication pin 110 and the detection circuit 140 according to the received charging closing instruction, the detection circuit 140 sends the detected detection signal to the charging device through the communication pin 110, the communication pin 110 is disconnected with the control circuit 140 at the moment, the control circuit 140 stops sending the charging opening signal to the control pin 120 (the control circuit 140 is regarded as sending the charging closing signal to the control pin 120 at the moment), and the charging control switch disconnects the adapter and the charging device when the charging opening signal is not received, and stops charging the charging device. In addition, when the communication pin 110 is disconnected from the control circuit 140, the control circuit 140 may also stop charging the charging device by sending a close charging signal and transmitting it to the charging control switch through the control pin 120 when the open charging instruction is not received, causing the charging control switch to disconnect the adapter from the charging device.
It should be noted that, the charging device also generates a charging start instruction or a charging stop instruction according to the detection signal; that is, when the first selection switch 150 turns on the communication pin 110 and the detection circuit 140, and the detection circuit 140 sends the detected detection signal to the charging device through the communication pin 110, if the voltage value of the adapter corresponding to the detection signal is a normal voltage value (that is, indicates that the adapter can charge the charging device), the charging device generates an on-charging instruction and sends the on-charging instruction to the charging control chip 100 through the communication pin 110, and the charging control chip 100 controls the first selection switch 150 to turn on the communication pin 110 and the control circuit 130 according to the on-charging instruction, so that the control circuit 130 generates and sends the corresponding on-charging signal to the charging control switch, thereby completing the charging control. In contrast, if the voltage value of the adapter corresponding to the detection signal is an abnormal voltage value (i.e., indicates that the adapter cannot charge the charging device), the charging device generates a charging closing instruction and sends the charging closing instruction to the charging control chip 100 through the communication pin 110, and the charging control chip 100 is kept in a state in which the first selection switch 150 turns on the communication pin 110 and the detection circuit 140. In addition, if the charging device has voltage fluctuation, overvoltage, undervoltage, and other conditions, the charging device generates and sends a charging closing instruction through the communication pin 110, and when the charging control chip 100 receives the charging closing instruction, the first selection switch 150 is controlled to switch on the communication pin 110 and the detection circuit, so that the charging device is prevented from being in a charging state and damage to the charging device is avoided. The charging instruction is turned on as a low-level signal, the charging instruction is turned off as a high-level signal, the charging signal is turned on as a low-level signal, and the charging signal is turned off as a high-resistance signal; in addition, the on-charge command may be a low-level signal or a high-impedance signal, and the off-charge command may be a high-level signal or a high-impedance signal, so long as it is ensured that the on-charge command and the off-charge command are not the same signal, and the charging control chip 100 generates a low-level signal (i.e., an on-charge signal) when receiving the on-charge command (i.e., the high-level signal or the low-level signal or the high-impedance signal), or generates a high-impedance signal (i.e., an off-charge signal) when receiving the off-charge command (i.e., the high-level signal or the low-level signal or the high-impedance signal).
The charge control chip of the present utility model reduces the pin count of the charge control chip 100 by multiplexing the same control pins 120.
Embodiment two:
as shown in fig. 4, the first difference between the present embodiment and the present embodiment is that the charging control chip 100 further includes a second selection switch 160, where the second selection switch 160 is electrically connected between the first end of the control circuit 130, the first end of the detection circuit 140 and the control pin 120, and specifically, the second selection switch 160 has a common end and at least two branch ends, where two branch ends of the second selection switch 160 are electrically connected with the first end of the control circuit 130 and the first end of the detection circuit 140, respectively, the common end of the second selection switch 160 is electrically connected with the control pin 120, the charging control chip 100 controls the second selection switch 160 to turn on the control circuit 130 and the control pin 120 according to an on-charging command, or controls the second selection switch 160 to turn on the detection circuit 140 and the control pin 120 according to an off-charging command, i.e. the second selection switch 160 cooperates with the first selection switch 150, so that both ends of the control circuit 130 simultaneously turn on the communication pin 110 and the control pin 120, or both ends of the detection circuit 140 simultaneously turn on the communication pin 110 and the control pin 120, so that when both ends of the control circuit 130 simultaneously turn on the communication pin 110 and the control pin 120, the charging control pin 140 can be prevented from being in a normal operation between the detection circuit and the control circuit 140. When the second selection switch 160 cooperates with the first selection switch 150 to enable the two ends of the detection circuit 140 to simultaneously turn on the communication pin 110 and the control pin 120, the control circuit 130 and the control pin 120 are in an open state, so that the control pin 120 presents a high resistance state, and a signal generated by the control circuit 130 cannot be transmitted to the control pin 120, so that when the charging control chip 100 receives a charging closing instruction, the control circuit 130 can generate a high level signal, a low level signal, or a high resistance state signal.
Embodiment III:
as shown in fig. 5, the first embodiment is different from the first embodiment in that the present embodiment does not include the control circuit 130, that is, the control circuit 130 is absent based on the first embodiment, and correspondingly, the first end of the detection circuit 140 is electrically connected to the control pin 120, the first selection switch 150 is electrically connected to the second end of the detection circuit 140, the control pin 120 and the communication pin 110, specifically, the first selection switch 150 has a common end and at least two branch ends, two branch ends of the first selection switch 150 are electrically connected to the second end of the detection circuit 140 and the control pin 120, the common end of the first selection switch 150 is electrically connected to the communication pin 110, the charge control chip 100 controls the first selection switch 150 to turn on the communication pin 110 and the control pin 120 according to the on charge command, at this time, the on charge command sent by the charging device is a low level signal, the on charge signal transmitted to the charge control switch by the control pin 120 is also a low level signal, and the charge control switch turns on the adapter and the charging device when receiving the low level signal, so as to charge the charging device; or the charging control chip 100 controls the first selection switch 150 to switch on the communication pin 110 and the detection circuit 140 according to the charging closing instruction, at this time, the control pin 120 and the communication pin 110 are in an open state, so that the control pin 120 is in a high-resistance state, and the signal received by the communication pin 110 cannot be transmitted to the control pin 120, so when the charging control chip 100 receives the charging closing instruction (the charging closing instruction can be a high-level signal or a high-resistance state signal at this time), the first selection switch 150 is controlled to switch on the communication pin 110 and the detection circuit 140, the charging is closed, and the detection circuit 140 detects the voltage of the adapter through the control pin 120, thereby reducing the control circuit 130 and reducing the cost under the condition that multiplexing of the control pin 120 is completed.
Embodiment four:
as shown in fig. 6, the third difference between the present embodiment and the third embodiment is that the charging control chip 100 further includes a second selection switch 160, where the second selection switch is electrically connected between the first end of the detection circuit 140, the first selection switch 150 and the control pin 120, specifically, the second selection switch 160 has a common end and at least two branch ends, where two branch ends of the second selection switch 160 are respectively electrically connected with the first end of the detection circuit 140 and one branch end of the at least two branch ends of the first selection switch 150 except the branch end electrically connected with the second end of the detection circuit 140 (i.e., one branch end of the second selection switch 160 and the second end of the detection circuit 140 are respectively electrically connected with different branch ends of the first selection switch 150), and the common end of the second selection switch 160 is electrically connected with the control pin 120, and the charging control chip 100 controls the second selection switch 160 to cooperate with the first selection switch 150 to turn on the communication pin 110 and the control pin 120 according to an on charging command, or controls the second selection switch 160 to cooperate with the second selection switch 140 and the control pin 120 according to an off charging command, that the second selection switch 160 cooperates with the second selection switch 140 and the control pin 120 to turn on the second selection switch 140 and the control pin 110 and the communication pin 120 to turn on the two branch ends of the second selection switch 140 and the control pin 110 and the control pin 120 to be in communication with the communication between the two control pin and the detection pin 110 and the control pin 120 and the communication circuit 110.
Fifth embodiment:
fig. 7 schematically shows a charge control circuit according to an embodiment of the present utility model. As shown in fig. 7, the charge control circuit includes a charge control chip 100, a charge control switch 200, a first resistor R1, and a second resistor R2.
The charging control chip 100 is the charging control chip 100 according to any one of the first to fourth embodiments, the communication pin 110 of the charging control chip 100 is electrically connected to the charging device 300, and the charging control chip 100 receives the charging start instruction or the charging stop instruction sent by the charging device 300 through the communication pin 110 and generates a corresponding charging start signal or a charging stop signal according to the charging start instruction or the charging stop instruction; the control end of the charging control switch 200 is electrically connected with the control pin 120, the first end of the charging control switch 200 is used for being electrically connected with the adapter 400, the second end of the charging control switch 200 is used for being electrically connected with the charging device 300, and the charging control switch 200 turns on the adapter 400 and the charging device 300 to charge the charging device 300 according to a charging signal on, or turns off the adapter 400 and the charging device 300 to stop charging the charging device 300 according to a charging signal off; the first end of the first resistor R1 is electrically connected with the adapter 400 (also electrically connected with the first end of the charging control switch 200), the second end of the first resistor R1 is electrically connected with the control pin 120 (also electrically connected with the control end of the charging control switch 200), when the charging control switch 200 disconnects the adapter 400 from the charging device 300 according to the off charging signal, the charging control chip 100 also detects the voltage of the adapter 400 through the control pin 120 to obtain a detection signal, and sends the detection signal to the charging device 300 through the communication pin 110; the second resistor R2 is connected in parallel to the first end and the second end of the charging control switch 200, and the second resistor R2 provides the electric energy for the charging device 300 when the charging device 300 is in a shutdown state or a low-power state and cannot be charged, i.e. provides a small amount of electric energy for the charging device 300 through the second resistor R2 when the charging device 300 is in a shutdown state or other states incapable of being charged due to too low electric energy. The charge control switch 200 is a transistor, and more specifically, may be a MOS transistor.
The control process for the charge control circuit includes the steps of:
1. if it is detected that the voltage value of the adapter 400 meets the charging condition, the charging device 300 sends a charging start instruction through the communication pin 110 of the charging control chip 100, and when the charging control chip 100 receives the charging start instruction, the control pin 120 outputs a low-level signal, so that the transistor (i.e. the charging control switch 200) is turned on, and the charging device 300 is charged.
2. If the charging device 300 detects an abnormal condition (such as unstable voltage/under voltage), the charging device 300 sends a charging closing instruction through the communication pin 110 of the charging control chip 100, and when the charging control chip 100 receives the charging closing instruction, the communication pin 110 is conducted with the detection circuit 140, at this time, the control pin 120 is electrically connected with the detection circuit 140, the control pin 120 is in a high-resistance state outside the charging IC, the gate of the transistor (i.e., the control end of the charging control switch 200) is pulled up through the voltage of the first resistor R1, so that the transistor is not conducted, and the charging of the charging device 300 is stopped.
3. The charging IC control pin 120 detects a transistor gate voltage, that is, the adapter 400 voltage when it is in a high resistance state, and outputs the detected value or the detected result to the charging device 300 through the communication pin 110.
4. If the voltage value of the adapter 400 is detected to meet the charging condition, the charging device repeats step 1, and resumes charging.
In the charge control circuit of the present utility model, in the off-charge reset, the effect that one control pin 120 can not only control the charge but also detect the voltage is achieved.
What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.
Claims (10)
1. A charge control chip, comprising:
the charging control chip receives an opening charging instruction or a closing charging instruction sent by the charging equipment through the communication pin, and generates a corresponding opening charging signal or closing charging signal according to the opening charging instruction or the closing charging instruction;
the charging control chip is used for sending the charging starting signal or the charging closing signal to the charging control switch through the control pin, detecting the voltage of the adapter through the control pin to obtain a detection signal, and sending the detection signal to the charging equipment through the communication pin;
the first end of the control circuit is electrically connected with the control pin, and the control circuit is used for generating a corresponding starting charging signal according to the received starting charging instruction;
the first end of the detection circuit is electrically connected with the control pin, and the detection circuit is used for detecting the voltage of the adapter and obtaining the detection signal;
the control pin is connected with the control circuit or the detection circuit through the switch selection.
2. The charge control chip of claim 1, wherein the charge control chip further comprises:
the first selection switch is respectively and electrically connected with the second end of the control circuit, the second end of the detection circuit and the communication pin, and the charging control chip controls the first selection switch to conduct the communication pin and the control circuit according to the opening charging instruction or controls the first selection switch to conduct the communication pin and the detection circuit according to the closing charging instruction.
3. The charge control chip of claim 2, further comprising a second selection switch electrically connected between the first end of the control circuit, the first end of the detection circuit, and the control pin, wherein the charge control chip controls the second selection switch to turn on the control circuit and the control pin according to the charge on command, or controls the second selection switch to turn on the detection circuit and the control pin according to the charge off command.
4. The charge control chip of claim 1, wherein the charge control chip further comprises:
the first end of the detection circuit is electrically connected with the control pin, and the detection circuit is used for detecting the voltage of the adapter and obtaining the detection signal;
the first selection switch is respectively and electrically connected with the second end of the detection circuit, the control pin and the communication pin, and the charging control chip controls the first selection switch to conduct the communication pin and the control pin according to the opening charging instruction or controls the first selection switch to conduct the communication pin and the detection circuit according to the closing charging instruction.
5. The charge control chip of claim 4, further comprising a second selection switch electrically connected between the first end of the detection circuit, the first selection switch, and the control pin, wherein the charge control chip controls the second selection switch to cooperate with the first selection switch to turn on the communication pin and the control pin according to the on-charge instruction, or controls the second selection switch to turn on the detection circuit and the control pin according to the off-charge instruction.
6. The charge control chip of any one of claims 2-5, wherein the detection circuit is a window comparator.
7. The charge control chip of any one of claims 2-5, wherein the detection circuit is a threshold comparison circuit.
8. The charge control chip of any one of claims 1-5, wherein the on charge signal is a low level signal and the off charge signal is a high impedance signal.
9. The charge control chip of any one of claims 1-5, wherein the charging device generates the on charge command or the off charge command based on the detection signal.
10. A charge control circuit, characterized by comprising:
the charging control chip of any one of claims 1-9, wherein the communication pin is electrically connected with a charging device, and the charging control chip receives an on charging instruction or an off charging instruction sent by the charging device through the communication pin and generates a corresponding on charging signal or off charging signal according to the on charging instruction or the off charging instruction;
the control end of the charging control switch is electrically connected with the control pin, the first end of the charging control switch is used for being electrically connected with the adapter, the second end of the charging control switch is used for being electrically connected with the charging equipment, and the charging control switch conducts the adapter and the charging equipment to charge the charging equipment according to the opening charging signal or disconnects the adapter and the charging equipment to stop charging the charging equipment according to the closing charging signal;
the first end of the first resistor is electrically connected with the adapter, the second end of the first resistor is electrically connected with the control pin, and when the charging control switch disconnects the adapter and the charging equipment according to the charging closing signal, the charging control chip also detects the voltage of the adapter through the control pin to obtain a detection signal and sends the detection signal to the charging equipment through the communication pin;
and the second resistor is connected in parallel with the first end and the second end of the charging control switch, and provides electric energy for the charging equipment when the charging equipment is in a shutdown state or a low-power state and cannot be charged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321407080.3U CN220711308U (en) | 2023-06-02 | 2023-06-02 | Charging control chip and charging control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321407080.3U CN220711308U (en) | 2023-06-02 | 2023-06-02 | Charging control chip and charging control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN220711308U true CN220711308U (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321407080.3U Active CN220711308U (en) | 2023-06-02 | 2023-06-02 | Charging control chip and charging control circuit |
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| CN (1) | CN220711308U (en) |
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- 2023-06-02 CN CN202321407080.3U patent/CN220711308U/en active Active
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