CN219801931U - Mobile power supply output port control circuit - Google Patents
Mobile power supply output port control circuit Download PDFInfo
- Publication number
- CN219801931U CN219801931U CN202320922286.3U CN202320922286U CN219801931U CN 219801931 U CN219801931 U CN 219801931U CN 202320922286 U CN202320922286 U CN 202320922286U CN 219801931 U CN219801931 U CN 219801931U
- Authority
- CN
- China
- Prior art keywords
- control unit
- resistor
- output
- field effect
- mobile power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 230000005669 field effect Effects 0.000 claims description 58
- 230000001360 synchronised effect Effects 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims 1
- 230000005059 dormancy Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000007958 sleep Effects 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a mobile power supply output port control circuit which comprises an access detection unit, a main control unit, a voltage conversion unit and an output control unit, wherein when the access detection unit detects that equipment is accessed, the main control unit is informed of the main control unit through interruption, the main control unit outputs a conduction level to the output control unit, the main control unit inquires the connection state of an output port at regular time through a register in the voltage conversion unit, and when the equipment is disconnected, the main control unit outputs a disconnection level to the output control unit, so that the voltage conversion unit is disconnected. According to the utility model, when a user charges the mobile power supply, the user does not need to press a key when accessing and removing the charging equipment, so that the user experience is improved, and meanwhile, after the mobile power supply system detects that the equipment is removed, a part of integrated circuit chips are disconnected, so that the power consumption of the mobile power supply in dormancy is reduced, and the service life of a battery is prolonged.
Description
Technical Field
The utility model relates to the technical field of mobile power supplies, in particular to a mobile power supply output port control circuit.
Background
With the popularization of various consumer electronic products, mobile power supplies are becoming more and more popular as portable chargers in people's lives, and various manufacturers have also put forward mobile power supplies supporting fast charging. Some mobile power supplies still need to press a key to activate a charging function when charging equipment, and after the equipment is removed, the mobile power supplies are turned off by manually pressing the key, or the mobile power supplies automatically enter a standby mode, so that the user experience is poor.
The quiescent current of the mobile power supply is the current consumed by the mobile power supply product under the condition that no charging equipment is connected, and the smaller the value is, the better the cruising performance of the product is. After some mobile power supplies automatically enter a standby mode, an integrated circuit chip with larger hollow current in a circuit is not disconnected, so that the whole quiescent current of the mobile power supply is overlarge, and the service life of a battery is influenced.
Disclosure of Invention
In order to improve user experience of manual key pressing when a user charges and ensure low power consumption when a mobile power supply is in standby, the utility model provides the mobile power supply output port control circuit, when a charged device is connected to an output port of the mobile power supply for quick charging, the mobile power supply can be automatically opened and output to charge the device; when the charged equipment is removed from the output port of the mobile power supply, the mobile power supply can disconnect the integrated circuit chip with larger no-load current and automatically close the output.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a control circuit of a mobile power supply output port comprises an access detection unit, a main control unit, a voltage conversion unit and an output control unit; the output port of the mobile power supply comprises a voltage output pin and a grounding pin, and the voltage conversion unit is electrically connected with the output end of the battery module of the mobile power supply and the output port of the mobile power supply respectively through the output control unit; the input end of the access detection unit is electrically connected with the voltage output pin of the output port, the output end of the access detection unit is electrically connected with the main control unit, and the access detection unit outputs a wake-up level to the main control unit when the voltage of the voltage output pin of the output port is pulled down by the electric equipment connected between the voltage output pin and the grounding pin; the main control unit is electrically connected with the output control unit and outputs a conduction level for conducting the output control unit when receiving the wake-up level.
The output port of the mobile power supply comprises a channel configuration pin; the voltage conversion unit is electrically connected with the channel configuration pin, resets the state bit in the internal connection state register when the internal pin voltage electrically connected with the channel configuration pin is not pulled down, and sets the state bit in the internal connection state register when the internal pin voltage electrically connected with the channel configuration pin is pulled down; the voltage conversion unit is electrically connected with the main control unit through an I2C bus, and the main control unit reads the state value of the internal connection state register of the voltage conversion unit through the I2C bus at regular time and outputs a turn-off level to the output control unit when the connection state register of the voltage conversion unit is reset.
In a further scheme, the output port of the mobile power supply is a Type-C interface, the voltage output pin is a VBUS pin of the Type-C interface, and the access detection unit comprises a first triode, a first resistor, a second resistor, a third resistor, a fourth resistor and a first diode; the base of the first triode is electrically connected with the VBUS pin of the Type-C interface through a fourth resistor and a first diode, the emitter of the first triode is connected with a power supply, the collector of the first triode is connected with the first IO port of the main control unit through the first resistor, the base of the first triode is also connected with the power supply through the second resistor, and one end of the first resistor connected with the IO port of the main control unit MCU is also grounded through a third resistor.
In a further scheme, the voltage conversion unit comprises a fast charge and synchronous buck chip and a peripheral auxiliary circuit thereof.
In a further scheme, the channel configuration pins are CC1 and CC2 pins of the Type-C interface, and the CC1 and CC2 pins of the fast charging and synchronous voltage reducing chip are respectively electrically connected with the CC1 and CC2 pins of the Type-C interface.
In a further aspect, the output control unit includes a first connection subunit, and the voltage input end of the voltage conversion unit is electrically connected to the output end of the battery module of the mobile power supply through the first connection subunit.
In a further scheme, the first connection subunit of the output control unit comprises a first field effect transistor, a fifth resistor, a first zener diode, a sixth resistor, a seventh resistor, an eighth resistor and a second field effect transistor; the cathode of the first voltage stabilizing diode, one end of the fifth resistor and the source electrode of the first field effect transistor are all electrically connected with the output end of the battery module, the anode of the first voltage stabilizing diode, the other end of the fifth resistor and the grid electrode of the first field effect transistor are all connected with the drain electrode of the second field effect transistor through the sixth resistor, the drain electrode of the first field effect transistor is electrically connected with the input end of the voltage conversion unit, the grid electrode of the second field effect transistor is electrically connected with the second IO port of the main control unit through the seventh resistor, the grid electrode of the second field effect transistor is grounded through the eighth resistor, and the source electrode of the second field effect transistor is grounded.
In a further scheme, the output control unit comprises a second connection subunit, and the voltage output end of the voltage conversion unit is electrically connected with the output port of the mobile power supply through the second connection subunit.
The second connection subunit of the output control unit further comprises a third field effect tube, a ninth resistor, a second zener diode, a tenth resistor, an eleventh resistor, a twelfth resistor and a fourth field effect tube, wherein the negative electrode of the second zener diode, one end of the ninth resistor and the source electrode of the third field effect tube are electrically connected with the voltage output pin of the output port of the mobile power supply, the positive electrode of the second zener diode, the other end of the ninth resistor and the grid electrode of the third field effect tube are electrically connected with the drain electrode of the fourth field effect tube through the tenth resistor, the drain electrode of the third field effect tube is electrically connected with the output end of the voltage conversion unit, the grid electrode of the fourth field effect tube is electrically connected with the second IO port of the main control unit through the eleventh resistor, the grid electrode of the fourth field effect tube is grounded through the twelfth resistor, and the source electrode of the fourth field effect tube is grounded.
In the mobile power port output control circuit provided by the utility model, the main control unit can automatically identify the access and removal of equipment through the wake-up level of the access detection unit and the internal register of the voltage conversion unit, and send the corresponding control level to the control circuit so as to achieve the purpose of switching on and off the voltage conversion unit, thereby realizing the automatic control of opening and closing the output port. Therefore, the user does not need to press a key when inserting the device into the device and removing the device to finish charging, so that the user experience is improved, and meanwhile, the voltage conversion unit where the integrated circuit chip with larger idle current is located is disconnected when the device is removed, so that the low power consumption of the system in dormancy is ensured, and the service life of the battery is prolonged.
Drawings
Fig. 1 is a schematic block diagram of a control circuit for an output port of a mobile power supply according to an embodiment of the present utility model.
Fig. 2 is a schematic circuit diagram of an access detection unit in a control circuit of a mobile power output port according to an embodiment of the present utility model.
Fig. 3 is a schematic circuit diagram of a voltage conversion unit in a control circuit of an output port of a mobile power supply according to an embodiment of the present utility model.
Fig. 4 is a schematic circuit diagram of a first connection subunit of an output control unit in a mobile power output port control circuit according to an embodiment of the present utility model.
Fig. 5 is a schematic circuit diagram of a second connection subunit of the output control unit in the control circuit of the output port of the mobile power supply according to the embodiment of the present utility model.
Detailed Description
The technical scheme of the utility model is further described below with reference to the attached drawings in the specification:
referring to fig. 1, fig. 1 is a schematic block diagram of a mobile power output port control circuit according to an embodiment of the present utility model, where the mobile power output port control circuit can be applied to a mobile power source and output a charging current to an electric device. The mobile power supply output port control circuit of the present embodiment includes a main control unit 1, an output control unit, a voltage conversion unit 3, and an access detection unit 4, where the output control unit may specifically include a first connection subunit 20 and a second connection subunit 21. The voltage input end of the voltage conversion unit 3 is electrically connected with the output end of the battery module of the mobile power supply through the first connection subunit 20, and the voltage output end of the voltage conversion unit 3 is electrically connected with the output port through the second connection subunit 21; the access detection unit 4 is electrically connected with the output port; the first connection subunit 20, the second connection subunit 21, the voltage conversion unit 3, and the access detection unit 4 of the output control unit are respectively electrically connected with the main control unit 1.
The output port specifically comprises a voltage output pin and a grounding pin, and when the output port is connected with electric equipment (such as a mobile phone to be charged, etc.), the voltage output pin is pulled down by the electric equipment (namely, the voltage output pin, the electric equipment and the grounding pin are connected to form a loop). When the access detection unit 4 detects that the voltage of the voltage output pin of the output port is pulled down, a wake-up level is output to the main control unit 1, the main control unit 1 is woken up and then outputs a conduction level to the first connection subunit 20 and the second connection subunit 21 of the output control unit, the first connection subunit 20 and the second connection subunit 21 are conducted after receiving the conduction level, the output port is connected with the synchronous state information of the voltage conversion unit 3, the main control unit 1 reads the port connection state information from the voltage conversion unit 3, and meanwhile, the voltage conversion unit 3 converts the voltage output by the power supply module into corresponding charging voltage and outputs the corresponding charging voltage through the output port. When the main control unit 1 is not woken up (i.e. is in a sleep state), the on level is not output, the first connection subunit 20 and the second connection subunit 21 are turned off, and the output port does not output the charging voltage.
Through the wake-up level of the access detection unit 4 and the connection state information of the voltage conversion unit 3, the main control unit 1 can acquire the access and removal information of the equipment in real time, and output the on level and the off level to the first connection subunit 20 of the output control circuit and the second connection subunit 21 of the output control circuit to control the access and disconnection of the voltage conversion unit 3, so that the purpose of automatically opening and closing the output port is achieved.
In particular, the main control unit 1 includes an MCU and peripheral circuits, wherein the MCU can specifically use ES8P5066FJNK. The output port of the mobile power supply can be an USB Type-C interface.
Referring to fig. 2, in an embodiment of the present utility model, the access detection unit 4 of the mobile power output port control circuit includes a first triode Q18, a first resistor R128, a second resistor R129, a third resistor R130, a fourth resistor R131, and a first diode D1; the base of the first triode Q18 is electrically connected with a voltage output pin VBUS pin of an output port through a fourth resistor R131 and a first diode D1, the emitter of the first triode Q18 is connected with a power supply (for example, 3.3V), the collector of the first triode Q18 is connected with a first IO port INDET-A of the main control unit through a first resistor R128, the base of the first triode Q18 is also connected with the power supply through a second resistor R129, and one end of the first resistor R128 connected with the IO port of the main control unit MCU is also grounded through a third resistor R130. In particular, the first transistor Q18 employs a PNP transistor 2N3906, and the first diode D1 employs 1N4148.
When the output port of the mobile power supply is empty, the voltage output pin VBUS of the output port is suspended, that is, the voltage of the VBUS pin is high, the first diode D1 is not conducted, the base current of the first triode Q18 is zero, the first triode Q18 is in an off state, the INDET-a is grounded through the third resistor R130, and the voltage is low. When electric equipment such as a mobile phone or a notebook computer is inserted into an output port of a mobile power supply, a voltage output pin VBUS pin, the electric equipment and a grounding pin GND form a loop, a first diode D1 is grounded through impedance of the accessed electric equipment, a first triode Q18 is grounded through a fourth resistor R131 and the first diode D1, base current is generated, the first triode Q18 is conducted, and a collector outputs a 3.3V high level to a first IO port INDET-A of a main control unit. By the mode, the access detection unit 4 can detect the access of the electric equipment in real time and inform the main control unit 1.
Referring to fig. 3, in an embodiment of the present utility model, the voltage conversion unit 3 of the mobile power output port control circuit includes a fast-charging and synchronous buck chip and peripheral auxiliary circuits thereof, wherein the fast-charging and synchronous buck chip adopts SW3526, and SW3526 has a built-in synchronous buck converter, output interface logic (e.g. USB Type-C interface logic), and an I2C interface, and supports multiple fast-charging protocols. The output port J3 of the mobile power supply includes channel configuration pins CC1 and CC2, and the CC1 and CC2 of the output port J3 of the mobile power supply are respectively connected with the CC1 and CC2 pins of the fast charge and synchronous buck chip SW3526, and the I2C clock and data pins SCK and SDA of the fast charge and synchronous buck chip SW3526 are respectively connected with the I2C clock and data pins of the main control unit 1. When the electric equipment is connected to an output port of the mobile power supply, pins CC1 and CC2 of the fast-charging and synchronous buck chip SW3526 can detect the pull-down from the electric equipment, the connection state position in the internal connection state register is set, and when the electric equipment is removed, pins CC1 and CC2 of the fast-charging and synchronous buck chip SW3526 are pulled up through the internal pull-up resistor, and the state position in the internal connection state register is reset; the main control unit 1 reads the state value of the internal connection state register of the fast charge and synchronous buck chip SW3526 through the I2C bus at regular time. In this way, the main control unit 1 can detect the removal of the electrical consumer immediately.
Referring to fig. 4, in an embodiment of the utility model, the first connection subunit 20 of the output control unit of the mobile power output port control circuit includes a first fet Q15, a fifth resistor R122, a first zener diode D15, a sixth resistor R124, a seventh resistor R125, an eighth resistor R126, and a second fet Q16; the cathode of the first zener diode D15, one end of the fifth resistor R122, and the source of the first field effect transistor Q15 are all electrically connected to the output end of the battery module, the anode of the first zener diode D15, the other end of the fifth resistor R122, and the gate of the first field effect transistor Q15 are all connected to the drain of the second field effect transistor Q16 via the sixth resistor R124, the drain of the first field effect transistor Q15 is electrically connected to the input end of the voltage conversion unit, the gate of the second field effect transistor Q16 is electrically connected to the second IO port usba_power_en1 of the main control unit via the seventh resistor R125, the gate of the second field effect transistor Q16 is grounded via the eighth resistor R126, and the source of the second field effect transistor Q16 is grounded. In particular, the first fet Q15 may be a P-channel fet KS4310MA, the first zener diode D15 may be MM3Z15SOD-323, and the second fet Q16 may be an N-channel fet 2N7002K.
When usba_power_en1 from the main control unit 1 is at a low level, the voltage between the gate and the source of the second fet Q16 is zero, the second fet Q16 is in an off state, the voltage between the gate and the source of the first fet Q15 is zero, and the first fet Q15 is in an off state; when usba_power_en1 from the main control unit 1 is at a high level, a positive voltage is generated between the gate and the source of the second fet Q16, the second fet Q16 is turned on, the fifth resistor R122 and the sixth resistor R124 divide the voltage, a negative voltage is generated between the gate and the source of the first fet Q15, and the first fet Q15 is turned on.
Referring to fig. 5, in an embodiment of the utility model, the second connection subunit 21 of the output control unit of the mobile power output port control circuit includes a third fet Q17, a ninth resistor R145, a second zener diode D19, a tenth resistor R146, an eleventh resistor R147, a twelfth resistor R148, and a fourth fet Q19; the negative electrode of the second zener diode D19, one end of the ninth resistor R145, and the source electrode of the third field effect transistor Q17 are electrically connected to the voltage output pin of the output port of the mobile POWER supply, the positive electrode of the second zener diode D19, the other end of the ninth resistor R145, and the gate electrode of the third field effect transistor Q17 are electrically connected to the drain electrode of the fourth field effect transistor Q19 through the tenth resistor R146, the drain electrode of the third field effect transistor Q17 is electrically connected to the output end of the voltage conversion unit, the gate electrode of the fourth field effect transistor Q19 is electrically connected to the second IO port usba_power_en1 of the master control unit through the eleventh resistor R147, the gate electrode of the fourth field effect transistor Q19 is also grounded through the twelfth resistor R148, and the source electrode of the fourth field effect transistor Q19 is grounded. The third FET Q17 adopts a P-channel FET KS4310MA, the second zener diode D19 adopts MM3Z15SOD-323, and the fourth FET Q19 adopts an N-channel FET 2N7002K.
When usba_power_en1 from the main control unit 1 is at a low level, the voltage between the gate and the source of the fourth fet Q19 is zero, the fourth fet Q19 is in an off state, the voltage between the gate and the source of the third fet Q17 is zero, and the third fet Q17 is in an off state; when usba_power_en1 from the main control unit 1 is at a high level, a positive voltage is generated between the gate and the source of the fourth fet Q19, the fourth fet Q19 is turned on, the ninth resistor R145 and the tenth resistor R146 divide the voltage, a negative voltage is generated between the gate and the source of the third fet Q17, and the third fet Q17 is turned on.
In one embodiment of the present utility model, the operation of the mobile power output port control circuit is as follows (the mobile power output port adopts Type-C interface):
1. when electric equipment such as a mobile phone or a notebook computer is inserted into a mobile POWER supply Type-C interface, the equipment and GND form a loop, a first diode D1 in an access detection unit 4 is grounded through the impedance of the accessed equipment, a first triode Q18 is grounded through a fourth resistor R131 and the first diode D1, base current is generated, the first triode Q18 is conducted, a collector outputs 3.3V high level to INDET-A, the level change of the INDET-A enables an MCU in the main control unit 1 to generate interruption, the MCU controls a first I/O port to output high level, namely a USBA_POWER_EN1 point is changed from low level to high level, a second field effect transistor Q16 in a first connection subunit 20 of the output control unit is conducted, a fifth resistor R122 and a sixth resistor R124 are divided to enable the first field effect transistor Q15 to be completely conducted, meanwhile, a fourth field effect transistor Q19 in a second connection subunit 21 of the output control unit is conducted, and a ninth resistor R145 and a tenth resistor R146 are divided to enable the third field effect transistor Q17 to be completely conducted. The voltage conversion unit 3 starts to work and charges the equipment according to a fast charging protocol supported by the external equipment. At this time, the VBUS pin voltage of the output port of the mobile power source Type-C is higher than 3.3V, the first diode D1 in the access detection unit 4 is turned off, the first triode Q18 is turned off, and INDET-A becomes low level.
2. When electric equipment such as a mobile phone or a notebook computer is removed from a mobile POWER supply Type-C interface, a quick charge and synchronous buck chip SW3526 detects voltage changes of pins CC1 and CC2, connection state information of the pins CC1 and CC2 in an internal CC connection state register REG 0x69 is updated, corresponding bits are reset, an MCU in a main control unit 1 serves as an I2C main device, values of the pins REG 0x69 in the SW3526 serving as an I2C slave device are actively read through an I2C protocol at regular time, when the values of the pins CC1 and CC2 are reset, an MCU controls an I/O port to output a low level, namely a USBA_POWER_EN1 point is changed from a high level to a low level, a second field effect transistor Q16 and a first field effect transistor Q15 in a first connection subunit 20 of an output control unit are sequentially disconnected, a fourth field effect transistor Q19 and a third field effect transistor Q17 in a second connection subunit 21 of the output control unit are sequentially disconnected, and a voltage conversion unit 3 is disconnected from a circuit. Since the maximum current of the fast-charging and synchronous buck chip SW3526 can reach 4mA when no load, the voltage converting unit 3 is turned off in order to control the quiescent current of the portable power source to be within a reasonable range, such as 200 uA.
According to the working process, when the electric equipment access and removal event occurs in the Type-C interface, the mobile power supply can automatically detect the electric equipment access and removal event and access or disconnect the voltage conversion unit according to the needs, so that the purpose of opening and closing the Type-C charging output is achieved, a user does not need to press a key when the user inserts the equipment to start charging and removes the equipment to finish charging, user experience is improved, meanwhile, the voltage conversion unit is disconnected when the equipment is removed, low power consumption when a system is in dormancy is guaranteed, and the service life of a battery is prolonged.
It should be noted that the above list is only one specific embodiment of the present utility model. It is obvious that the utility model is not limited to the above embodiments, but that many variations are possible, and that in any case all variations that can be directly derived or suggested by a person skilled in the art from the disclosure of the utility model shall be considered as the protective scope of the utility model.
Claims (7)
1. The utility model provides a portable power source output port control circuit, portable power source's output port includes voltage output pin and ground pin, its characterized in that: the control circuit comprises an access detection unit, a main control unit, a voltage conversion unit and an output control unit; the voltage conversion unit is electrically connected with the output end of the battery module of the mobile power supply and the output port of the mobile power supply respectively through the output control unit; the input end of the access detection unit is electrically connected with a voltage output pin of an output port, the output end of the access detection unit is electrically connected with the main control unit, and the access detection unit outputs a wake-up level to the main control unit when the voltage of the voltage output pin of the output port is pulled down by electric equipment connected between the voltage output pin and a grounding pin; the main control unit is electrically connected with the output control unit and outputs a conduction level for conducting the output control unit when receiving a wake-up level;
the output port of the mobile power supply comprises a channel configuration pin; the voltage conversion unit is electrically connected with the channel configuration pin, resets the state bit in the internal connection state register when the internal pin voltage electrically connected with the channel configuration pin is not pulled down, and resets the state bit in the internal connection state register when the internal pin voltage electrically connected with the channel configuration pin is pulled down; the voltage conversion unit is electrically connected with the main control unit through an I2C bus, and the main control unit reads the state value of the internal connection state register of the voltage conversion unit through the I2C bus at regular time and outputs a turn-off level to the output control unit when the connection state register of the voltage conversion unit is reset;
the output port of the mobile power supply is a Type-C interface, the voltage output pin is a VBUS pin of the Type-C interface, and the access detection unit comprises a first triode (Q18), a first resistor (R128), a second resistor (R129), a third resistor (R130), a fourth resistor (R131) and a first diode (D1);
the base of first triode (Q18) is connected with VBUS foot electricity of Type-C interface via fourth resistance (R131) and first diode (D1), the power supply is connected to the projecting pole of first triode (Q18), the collecting electrode of first triode (Q18) is connected via first resistance (R128) the first IO mouth of master control unit, the base of first triode (Q18) is still connected via second resistance (R129) power supply, the one end that is connected with the IO mouth of master control unit MCU on first resistance (R128) still is grounded via third resistance (R130).
2. The mobile power output port control circuit of claim 1, wherein: the voltage conversion unit comprises a fast charging and synchronous voltage reduction chip and a peripheral auxiliary circuit thereof.
3. The mobile power output port control circuit of claim 2, wherein: the channel configuration pins are CC1 and CC2 pins of the Type-C interface, and the CC1 and CC2 pins of the fast charging and synchronous voltage reduction chip are respectively electrically connected with the CC1 and CC2 pins of the Type-C interface.
4. A mobile power supply output port control circuit according to any one of claims 1-3, wherein: the output control unit comprises a first connection subunit, and a voltage input end of the voltage conversion unit is electrically connected with an output end of the battery module of the mobile power supply through the first connection subunit.
5. The mobile power output port control circuit of claim 4, wherein: the first connection subunit of the output control unit comprises a first field effect transistor (Q15), a fifth resistor (R122), a first zener diode (D15), a sixth resistor (R124), a seventh resistor (R125), an eighth resistor (R126) and a second field effect transistor (Q16);
the negative electrode of the first zener diode (D15), one end of the fifth resistor (R122) and the source electrode of the first field effect transistor (Q15) are electrically connected with the output end of the battery module, the positive electrode of the first zener diode (D15), the other end of the fifth resistor (R122) and the grid electrode of the first field effect transistor (Q15) are all connected with the drain electrode of the second field effect transistor (Q16) through a sixth resistor (R124), the drain electrode of the first field effect transistor (Q15) is electrically connected with the input end of the voltage conversion unit, the grid electrode of the second field effect transistor (Q16) is electrically connected with the second IO port of the main control unit through a seventh resistor (R125), the grid electrode of the second field effect transistor (Q16) is grounded through an eighth resistor (R126), and the source electrode of the second field effect transistor (Q16) is grounded.
6. The mobile power output port control circuit of claim 4, wherein: the output control unit comprises a second connection subunit, and the voltage output end of the voltage conversion unit is electrically connected with the output port of the mobile power supply through the second connection subunit.
7. The mobile power output port control circuit of claim 6, wherein: the second connection subunit of the output control unit comprises a third field effect transistor (Q17), a ninth resistor (R145), a second zener diode (D19), a tenth resistor (R146), an eleventh resistor (R147), a twelfth resistor (R148) and a fourth field effect transistor (Q19);
the negative electrode of the second zener diode (D19), one end of the ninth resistor (R145) and the source electrode of the third field effect transistor (Q17) are electrically connected with the voltage output pin of the output port of the mobile power supply, the positive electrode of the second zener diode (D19), the other end of the ninth resistor (R145) and the grid electrode of the third field effect transistor (Q17) are electrically connected with the drain electrode of the fourth field effect transistor (Q19) through a tenth resistor (R146), the drain electrode of the third field effect transistor (Q17) is electrically connected with the output end of the voltage conversion unit, the grid electrode of the fourth field effect transistor (Q19) is electrically connected with the second IO port of the main control unit through an eleventh resistor (R147), the grid electrode of the fourth field effect transistor (Q19) is grounded through a twelfth resistor (R148), and the source electrode of the fourth field effect transistor (Q19) is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320922286.3U CN219801931U (en) | 2023-04-21 | 2023-04-21 | Mobile power supply output port control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320922286.3U CN219801931U (en) | 2023-04-21 | 2023-04-21 | Mobile power supply output port control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219801931U true CN219801931U (en) | 2023-10-03 |
Family
ID=88176965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320922286.3U Active CN219801931U (en) | 2023-04-21 | 2023-04-21 | Mobile power supply output port control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219801931U (en) |
-
2023
- 2023-04-21 CN CN202320922286.3U patent/CN219801931U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202872406U (en) | Interface multiplexing circuit and mobile terminal | |
| TWI494863B (en) | Dual-interface card reader module | |
| CN110098652B (en) | Mobile phone, mobile phone main body device and mobile phone endurance device | |
| US20120194124A1 (en) | Wireless Battery Charging System | |
| EP4145669A1 (en) | Charging/discharging circuit and electronic device | |
| CN208174340U (en) | The power supply circuit and electronic product of portable electronic product with OTG function | |
| WO2014187415A1 (en) | Charging cable and charging system | |
| CN101788842A (en) | Power management device for computer system and related method thereof and computer system | |
| WO2009105113A1 (en) | External device charging while notebook is off | |
| CN2660763Y (en) | Intelligence charging seat of PDA or cell phone | |
| CN111884303B (en) | Charging control circuit, charging control method and electronic device | |
| CN219801931U (en) | Mobile power supply output port control circuit | |
| CN206180986U (en) | Trigger circuit and earphone restore to throne | |
| CN111478407A (en) | Notebook computer power supply circuit with charger function when shutdown and notebook computer | |
| CN112086830B (en) | Data line circuit communicating with iOS device | |
| CN212965358U (en) | Broken line detection circuit with load access automatic wake-up function and power bank | |
| CN115425716A (en) | Electronic device | |
| CN108808788B (en) | Miniaturized B-ultrasonic single-chip microcomputer control device and system thereof | |
| CN109066906B (en) | Charging circuit and integral type head-mounted apparatus | |
| CN107733025B (en) | USB and DC compatible double-charging circuit and operation method thereof | |
| CN219143420U (en) | Novel storage device | |
| CN220857661U (en) | Charging control circuit and device | |
| CN214674403U (en) | Charging and discharging circuit and electronic equipment | |
| CN215009602U (en) | Drive-by-wire ware and electrical equipment | |
| CN219800110U (en) | Circuit and device for supplying power from equipment to main equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |