CN113114188B - USB (Universal Serial bus) plug-in triggering starting circuit and electronic equipment - Google Patents
USB (Universal Serial bus) plug-in triggering starting circuit and electronic equipment Download PDFInfo
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- CN113114188B CN113114188B CN202110309482.9A CN202110309482A CN113114188B CN 113114188 B CN113114188 B CN 113114188B CN 202110309482 A CN202110309482 A CN 202110309482A CN 113114188 B CN113114188 B CN 113114188B
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- H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
Abstract
The embodiment of the application discloses USB inserts triggers circuit and electronic equipment that starts machine, wherein, USB inserts and triggers circuit that starts machine includes step-down circuit, USB and inserts indicating circuit, delay circuit, signal generation circuit, discharge circuit and switching on and shutting down identification circuit. When the voltage reduction circuit detects that the USB interface of the electronic equipment is in the insertion state, power is supplied to the USB insertion indicating circuit and the delay circuit. The time delay circuit generates a wake-up sequence and provides the wake-up sequence to the signal generating circuit, so that the signal generating circuit wakes up the main control module according to the wake-up signal and enables the electronic equipment to enter a boot program starting state. The startup and shutdown identification circuit triggers the signal generation circuit to be locked after the electronic equipment is started, and the discharge circuit discharges the delay circuit when the voltage reduction circuit stops supplying power. By adopting the scheme, the electronic equipment can quickly enter the boot program starting state through simple circuit combination, and the cost is low.
Description
Technical Field
The application relates to the technical field of electronic equipment, in particular to a USB plug-in trigger starting circuit and electronic equipment.
Background
Currently, most electronic devices, such as mobile phones and tablet computers, have Universal Serial Bus (USB) interfaces. Through the USB interface, the user can be convenient to carry out operations such as charging, data transmission and the like on the electronic equipment.
When the electronic equipment is in a starting state, if a user inserts the USB interface of the electronic equipment, the electronic equipment can be quickly charged and the like when the electronic equipment is connected with a power supply and other electronic equipment through the USB interface. When the electronic device is in the power-off state, if the USB interface of the electronic device is in the plugged state, the electronic device cannot respond. To solve this problem, it is common practice to configure the electronic device with a high-end plug-in wake-up module. Therefore, when the user inserts the electronic equipment in the power-off state, the electronic equipment can be quickly awakened and respond.
However, the above-mentioned plug-in wake-up module is costly and cannot be widely used in most electronic devices.
Disclosure of Invention
The embodiment of the application discloses USB inserts and triggers start-up circuit and electronic equipment, triggers the module through the start-up of low cost and detects the USB interface of the electronic equipment that is in the shutdown state for when the user operates the USB interface of electronic equipment, electronic equipment starts up fast.
In a first aspect, an embodiment of the present application provides a USB plug-in trigger boot circuit, including: the USB interface of step-down circuit and electronic equipment, USB inserts indicating circuit, delay circuit and signal generation circuit, the step-down circuit with electronic equipment insert indicating circuit, delay circuit is connected respectively, delay circuit with signal generation circuit connects, USB inserts indicating circuit with signal generation circuit respectively with electronic equipment's master control module is connected, wherein:
the voltage reduction circuit is used for supplying power to the USB insertion indicating circuit and the delay circuit when the USB interface of the electronic equipment is detected to be in an insertion state;
the USB insertion indicating circuit is used for sending indicating information to the main control module after being powered by the voltage reducing circuit so as to indicate that the USB interface of the main control module is in an insertion state;
the delay circuit is used for generating a wake-up sequence after being powered by the voltage reduction circuit and sending the wake-up sequence to the signal generation circuit;
the signal generating circuit is used for generating a wake-up signal according to the wake-up sequence and sending the wake-up signal to the main control module so as to wake up the main control module and start a boot program of the electronic equipment.
In one possible implementation, the voltage reduction circuit includes: the circuit comprises a first chip, a first resistor, a second resistor, a third resistor, a first capacitor and a second capacitor; wherein:
a voltage input pin of the first chip is connected with a voltage output end of the USB interface, an enable pin of the first chip is connected with a first end of the first resistor, an adjustment pin of the first chip is connected with a first end of the second resistor, a voltage output pin of the first chip is connected with the USB insertion indicating circuit and the delay circuit, and a grounding pin of the first chip is grounded;
the second end of the first resistor is connected with a voltage input pin of the first chip;
the second end of the second resistor is connected with a voltage output pin of the first chip;
the first end of the third resistor is connected with the adjusting pin of the first chip, and the second end of the third resistor is grounded;
the first end of the first capacitor is connected with a voltage output pin of the first chip, and the second end of the first capacitor is grounded;
and the first end of the second capacitor is connected with the second end of the first resistor, and the second end of the second capacitor is grounded.
In one possible implementation, the USB insertion indication circuit includes: fourth resistance and first triode, wherein:
the first end of the fourth resistor is connected with a low-voltage-drop voltage stabilizer in the USB insertion indicating circuit, and the second end of the fourth resistor is connected with the main control module;
the base electrode of the first triode is connected with the voltage output end of the voltage reduction circuit, the collector electrode of the first triode is connected with the main control module, and the emitting electrode of the first triode is grounded.
In one possible implementation, the delay circuit includes: fifth resistance, sixth resistance, third electric capacity, fourth electric capacity and second triode, wherein:
the first end of the fifth resistor is connected with the voltage output end of the voltage reduction circuit, and the second end of the fifth resistor is connected with the base electrode of the second triode;
a first end of the sixth resistor is connected with a first end of the third capacitor, and a second end of the sixth resistor is connected with a base electrode of the second triode;
the second end of the third capacitor is grounded;
the first end of the fourth capacitor is connected with the first end of the sixth resistor, and the second end of the fourth capacitor is grounded;
and the collector of the second triode is connected with the voltage output end of the voltage reduction circuit, and the emitter of the second triode serving as the output end of the time delay circuit is connected with the input end of the signal generation circuit.
In one possible implementation, the signal generating circuit includes: seventh resistance, eighth resistance, fifth electric capacity and third triode, wherein:
the first end of the seventh resistor is connected with the output end of the delay circuit, and the second end of the seventh resistor is connected with the base electrode of the third triode;
the first end of the eighth resistor is connected with the collector of the third triode, and the second end of the eighth resistor is connected with the output end of the signal generating circuit;
the first end of the fifth capacitor is connected with the base electrode of the third triode, and the second end of the fifth capacitor is grounded;
and the emitter of the third triode is grounded.
In a possible implementation manner, the circuit further includes: and the discharging circuit is connected with the voltage reducing circuit and the time delay circuit and is used for discharging the time delay circuit when the voltage reducing circuit does not supply power any more.
In one possible implementation, the discharge circuit includes: the negative electrode of the first diode is connected with the voltage output end of the voltage reduction circuit, and the positive electrode of the first diode is connected with the non-connection end of the capacitor in the time delay circuit; and the first end of the ninth resistor is connected with the cathode of the first diode, and the second end of the ninth resistor is grounded.
In a possible implementation manner, the circuit further includes: and the power-on and power-off identification circuit is connected with the main control module and the signal generation circuit and is used for triggering the signal generation circuit to stop receiving the awakening sequence after the main control module is identified to be awakened.
In one possible implementation, the power on/off identification circuit includes: tenth resistance, eleventh resistance, twelfth resistance, fourth triode, sixth electric capacity and second diode, wherein:
a collector of the fourth triode is connected with the input end of the signal generating circuit, a base of the fourth triode is connected with the first end of the tenth resistor, and an emitter of the fourth triode is grounded;
a second end of the tenth resistor is connected with the anode of the second diode;
a first end of the eleventh resistor is connected with a base electrode of the fourth triode, and a second end of the eleventh resistor is grounded;
a first end of the twelfth resistor is connected with the anode of the second diode, and a second end of the twelfth resistor is connected with the main control module;
and the cathode of the second diode is connected with the output end of the signal generating circuit.
In a second aspect, an embodiment of the present application provides an electronic device, including: the USB interface, the host module, and the USB plug-in trigger power-on circuit as implemented in the first aspect or various possible implementations of the first aspect.
The USB inserts and triggers start circuit and electronic equipment that this application embodiment provided, USB inserts and triggers start circuit includes step-down circuit, USB and inserts indicating circuit, delay circuit and signal generation circuit, and step-down circuit is connected respectively with electronic equipment's USB interface, USB insert indicating circuit, delay circuit, and delay circuit is connected with signal generation circuit, and USB inserts indicating circuit and signal generation circuit and is connected with electronic equipment's host system respectively. When the voltage reduction circuit detects that the USB interface of the electronic equipment is in the insertion state, power is supplied to the USB insertion indicating circuit and the delay circuit, so that the USB insertion indicating circuit sends indicating information to the main control module of the electronic equipment, and the main control module is ready to execute boot of the boot program. The time delay circuit generates a wake-up sequence and provides the wake-up sequence to the signal generating circuit, so that the signal generating circuit wakes up the main control module according to the wake-up signal and enables the electronic equipment to enter a boot program starting state. By adopting the scheme, the electronic equipment can quickly enter the boot program starting state when the USB interface is in the insertion state through simple circuit combination, and the cost is low.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of an application scenario of a USB plug-in trigger boot circuit according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a USB plug-in trigger boot circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of another USB plug-in boot triggering circuit according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a voltage reduction circuit in a USB plug-in power-on triggering circuit according to an embodiment of the present disclosure;
FIG. 5 is a circuit diagram of a USB plug-in triggered power-on circuit according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is to be noted that the terms "comprises" and "comprising" and any variations thereof in the examples and figures of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.
Currently, USB interfaces have been widely used in various scenes and electronic devices. Different kinds of electronic devices have different requirements for USB interfaces. For example, when the electronic device is in a shutdown state, if a user performs a plug-in operation on a USB of the electronic device, the electronic device is connected to a power supply and other electronic devices through a USB interface. At this time, some electronic devices equipped with the high-end wake-up module can be woken up to perform charging and the like. However, an electronic device not equipped with a high-end wake-up module cannot wake up and thus cannot be charged.
Therefore, the embodiment of the application provides a USB plug-in trigger power-on circuit, which can wake up an electronic device for charging and the like quickly when a user performs a plug-in operation on a USB interface of the electronic device, and has a low cost and a simple structure.
The USB plug-in triggering startup circuit provided by the embodiment of the application can be arranged on electronic equipment with a USB interface, and the problem that the USB plug-in operation cannot be responded when the electronic equipment is in a shutdown state is solved. The electronic device provided by the embodiment of the present application includes, but is not limited to, a mobile phone, a tablet computer, a wearable device, a Personal Digital Assistant (PDA), and the like. The state of the USB interface of the electronic equipment comprises a plug-in state and a pull-out state. The plug-in state means that a USB interface of the electronic equipment is plugged into a USB data line, and connection is established with a power supply, a notebook computer and the like through the USB data line. The pull-out state indicates that the USB interface of the electronic equipment is not plugged into a USB data line; or, even if the USB interface of the electronic device is plugged into the USB data line, the other end of the USB data line is not connected to a power supply, a computer, or the like.
Fig. 1 is a schematic view of an application scenario of a USB plug-in startup triggering circuit according to an embodiment of the present disclosure. Referring to fig. 1, an electronic device 100 is, for example, a mobile phone with a USB interface, and the mobile phone has a USB plug-in triggering power-on circuit 11. When the mobile phone is in a power-off state, if a user inserts the USB interface of the mobile phone into the USB data line, the other end of the USB data line is connected with a notebook computer and the like in a working state. At this time, the USB plug-in triggering power-on circuit 11 detects that the USB interface of the mobile phone is in the plug-in state, and triggers the electronic device to wake up quickly.
In this embodiment, the starting of the electronic device may refer to starting a boot (boot) program of the electronic device, or may refer to starting the electronic device when the electronic device is normally powered on.
Fig. 2 is a schematic structural diagram of a USB plug-in boot triggering circuit according to an embodiment of the present disclosure. Referring to fig. 2, the USB plug-in trigger boot circuit 200 includes: the USB interface of electronic equipment, USB inserts indicating circuit 22, delay circuit 23 and signal generation circuit 24, step-down circuit 21 with electronic equipment, USB inserts indicating circuit 22, delay circuit 23 is connected respectively, delay circuit 23 with signal generation circuit 24 is connected, USB inserts indicating circuit 22 with signal generation circuit 24 respectively with electronic equipment's master control module is connected, wherein:
the voltage dropping circuit 21 is configured to supply power to the USB insertion indicating circuit 22 and the delay circuit 23 when the USB interface of the electronic device is detected to be in the insertion state.
The USB plug-in indication circuit 22 is configured to send indication information to the main control module after being powered by the voltage reduction circuit 21, so as to indicate that the USB interface of the main control module is in a plug-in state.
The delay circuit 23 is configured to generate a wake-up sequence after being powered by the voltage-reducing circuit 21, and send the wake-up sequence to the signal generating circuit 24.
The signal generating circuit 24 is configured to generate a wake-up signal according to the wake-up sequence, and send the wake-up signal to the main control module, so as to wake up the main control module and enable the electronic device to be started.
Based on the structure shown in fig. 2, the working principle of the USB plug-in trigger boot circuit provided by the embodiment of the present application is as follows:
when the USB interface of the electronic device is in the plugged-in state, the voltage-decreasing circuit 21 can recognize the plugged-in state. Then, the voltage reduction circuit gets power from a power pin of the USB interface and supplies power to a rear USB plug-in indicating circuit, a delay circuit and the like. Since the voltage supplied by the USB interface is usually relatively high, typically 5V. Under the fast charging protocol, the voltage provided by the USB interface is up to 20V. However, the voltage required by the logic circuit such as the USB plug-in indication circuit at the back end and the main control module is relatively low, such as 1.8 volts (V), 3.3V, and the like. Therefore, the voltage step-down circuit 21 performs a voltage step-down process on the voltage obtained from the power supply pin of the USB interface, and secures the operating voltage of the back-end circuit. Then, the voltage step-down circuit 21 supplies power to the USB insertion indication circuit 2, the delay circuit 23, and the like at the rear end.
After receiving the voltage provided by the voltage-reducing circuit 21, the USB insertion indicating circuit 22 sends an indication message, such as a low level, to the main control module of the electronic device. The USB insertion indication circuit 22 sends a low level to a designated pin of the host module of the electronic device. When the designated pin is at a low level, the main control module of the electronic device determines that the boot state of the boot stage is to be entered.
The boot state of the electronic device includes two types, one is a boot-stage boot state, and the other is a normal boot state. In the boot stage, the electronic device is only started up to a small extent, the application layer of the electronic device is not started, and the user cannot use various applications through the interface of the electronic device. When a subsequent user wants to use an application, the electronic device needs to enter a normal power-on state through operations such as long-press of a power-on key. In the normal startup state, the application layer of the electronic device is started, and a user can use various applications installed on the electronic device, so that the power consumption is high, but the user does not need to manually execute the normal startup.
When the delay circuit 23 receives the voltage provided by the voltage-reducing circuit, a wake-up sequence is output within a certain time according to parameters of a capacitor, an inductor, and the like included in the delay circuit 23, and the wake-up sequence is provided to the signal generating circuit 24. In general, different electronic devices have different requirements for wake-up sequences required for wake-up, and therefore, the capacitance of the capacitor in the delay circuit 23, the inductance of the inductor, and the like can be flexibly set according to the type of the electronic device, so that the delay circuit 23 can generate a correct wake-up sequence.
The signal generating circuit 24 receives the wake-up sequence from the delay circuit 23, generates a wake-up signal according to the wake-up sequence, and sends the wake-up signal to the power-on pin of the USB plug-in trigger power-on circuit 200. For example, the wake-up sequence is a high level, the signal generating circuit 24 outputs a low level according to the high level, and sends the low level to the boot pin of the USB plug-in trigger boot circuit 200, so as to wake up the main control module of the electronic device to enter the boot-up state. Thereafter, the power-on pin remains in a high state.
The USB inserts and triggers start circuit that this application embodiment provided, including step-down circuit, USB insert indicating circuit, delay circuit and signal generation circuit, the step-down circuit is connected respectively with electronic equipment's USB interface, USB insert indicating circuit, delay circuit, and delay circuit is connected with signal generation circuit, and USB inserts indicating circuit and signal generation circuit and is connected with electronic equipment's host system respectively. When the voltage reduction circuit detects that the USB interface of the electronic equipment is in the insertion state, power is supplied to the USB insertion indicating circuit and the delay circuit, so that the USB insertion indicating circuit sends indicating information to a main control module of the electronic equipment, and the main control module is ready to execute boot program startup. The time delay circuit generates a wake-up sequence and provides the wake-up sequence to the signal generating circuit, so that the signal generating circuit wakes up the main control module according to the wake-up signal and enables the electronic equipment to enter a boot program starting state. By adopting the scheme, the electronic equipment can quickly enter the boot program starting state when the USB interface is in the inserting state through simple circuit combination, and the cost is low.
Fig. 3 is a schematic structural diagram of another USB plug-in boot triggering circuit according to an embodiment of the present disclosure. Referring to fig. 3, the USB plug-in triggered booting circuit 300 according to the embodiment of the present application further includes, on the basis of fig. 2: and the discharging circuit 35 is connected with the voltage reducing circuit 31 and the time delay circuit 33 and is used for discharging the time delay circuit 33 when the voltage reducing circuit 31 is not powered any more.
Illustratively, when the USB interface of the electronic device is in the unplugged state, the voltage-reducing circuit 31 no longer supplies power to the USB insertion indicating circuit 32 and the delay circuit 33. At this time, the discharging circuit 35 discharges the delay circuit 33, and after the electric quantity stored in the capacitor of the delay circuit 33 is discharged, since the voltage-reducing circuit 31 does not supply power to the USB insertion indicating circuit 32 and the delay circuit 33 any more, and the USB insertion indicating circuit 32 does not send a low level to the designated pin of the main control module any more, the main control module of the electronic device can detect that the USB interface is in the unplugged state.
By adopting the scheme, when the USB interface of the electronic equipment is in the pull-out state, the discharge circuit quickly discharges the capacitor in the delay circuit so as to ensure that the delay circuit can correctly respond when the USB interface of the electronic equipment is in the plug-in state next time.
Referring to fig. 3 again, in another embodiment, the USB plug-in triggering booting circuit 300 further includes: and the power-on and power-off identification circuit 36 is connected with the main control module and the signal generation circuit 34, and is used for triggering the signal generation circuit 35 to stop receiving the wake-up sequence after the main control module is identified to be woken up.
Illustratively, when the main control module enters the boot program power-on state, the designated pin of the main control module is at a high level, and the power-on/power-off identification circuit 36 reads the designated pin to identify that the main control module enters the boot program power-on state. The power-on/off identification circuit 36 then pulls the input of the signal generation circuit 34 low so that the signal generation circuit 34 no longer receives the wake-up sequence, e.g., high, from the delay circuit 33.
By adopting the scheme, when the electronic equipment enters the boot program boot state, the startup and shutdown identification circuit triggers the circuit to be locked, so that the signal generation circuit is ensured not to repeatedly send the startup signal to the main control module when the electronic equipment is in the boot state, and errors are avoided.
In addition, the voltage-reducing circuit 31, the USB insertion indication circuit 32, the delay circuit 33, and the signal generation circuit 34 in the USB insertion trigger power-on circuit shown in fig. 3 are respectively equivalent to the voltage-reducing circuit 21, the USB insertion indication circuit 22, the delay circuit 23, and the signal generation circuit 24 in the embodiment of fig. 2, and specific working principles can be referred to the embodiment of fig. 2, which is not described herein again.
Fig. 4 is a schematic structural diagram of a voltage step-down circuit in a USB plug-in trigger boot circuit according to an embodiment of the present disclosure. Referring to fig. 4, the voltage-reducing circuit includes: the circuit comprises a first chip U1, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1 and a second capacitor C2; wherein:
the voltage input pin of the first chip U1 is connected with the voltage output end of the USB interface, the enable pin of the first chip U1 is connected with the first end of the first resistor R1, the adjusting pin of the first chip U1 is connected with the first end of the second resistor R2, the voltage output pin of the first chip U1 is connected with the USB insertion indicating circuit and the time delay circuit, and the grounding pin of the first chip U1 is grounded.
The second end of the first resistor R1 is connected to a voltage input pin of the first chip U1.
The second end of the second resistor R2 is connected to a voltage output pin of the first chip U1.
A first end of the third resistor R3 is connected to the adjustment pin of the first chip U1, and a second end of the third resistor R3 is grounded.
The first end of the first capacitor C1 is connected to the voltage output pin of the first chip U1, and the second end of the first capacitor C1 is grounded.
A first end of the second capacitor C2 is connected to the second end of the first resistor R1, and a second end of the second capacitor C2 is grounded.
Referring to fig. 4, the USB interface of the electronic device includes a plurality of pins, such as a USB V pin, a Data Positive (DP) pin, a data negative (DM) pin, a Ground (GND) pin, an M1 pin, and an M2 pin. The first chip U1 is, for example, a low dropout regulator LDO chip. When the USB interface is in a plug-in state, 5V voltage can be converted into 3.3V voltage and the like. The first resistor R1 is, for example, a resistor with a resistance of 24K ohms and an accuracy of 1%, the second resistor R2 is, for example, a resistor with a resistance of 100K ohms and an accuracy of 1%, and the third resistor is, for example, a resistor with a resistance of 33K ohms and an accuracy of 1%. The first capacitor C1 is, for example, a capacitor having a maximum withstand voltage of 16V at 1uF, and the second capacitor C2 is, for example, a capacitor having a maximum withstand voltage of 25V at 4.75 uF.
By adopting the scheme, the voltage reduction circuit comprises a simple capacitor, a resistor, an LDO chip and the like, the cost is low, and when the USB interface is in the insertion state, the electronic equipment can be triggered to enter the boot startup state.
Fig. 5 is a circuit diagram of a USB plug-in power-on triggering circuit according to an embodiment of the present disclosure. Referring to fig. 5, the usb insertion indicating circuit includes a fourth resistor R4 and a first transistor Q1, wherein: a first end of the fourth resistor R4 is connected with a low-voltage-drop voltage stabilizer in the USB plug-in indicating circuit, and a second end of the fourth resistor R4 is connected with the main control module; the base electrode of the first triode Q1 is connected with the voltage output end of the voltage reduction circuit, the collector electrode of the first triode Q1 is connected with the main control module, and the emitting electrode of the first triode Q1 is grounded.
Referring to fig. 5, the usb insertion indication circuit is powered by the voltage reduction circuit, and the fourth resistor is, for example, a resistor with a resistance of 1K ohm and a precision of 5%. The black filled triangle TP1 in the figure represents the connection point of the USB plug-in indication circuit and the main control module of the electronic device.
By adopting the scheme, the USB insertion indicating circuit comprises a simple capacitor, a simple resistor and the like, the cost is low, when the USB interface is in an insertion state, the USB insertion indicating circuit can send indicating information to the main control module of the electronic equipment to trigger the electronic equipment to enter a boot startup state, and the process is simple.
Referring to fig. 5 again, in an embodiment, the delay circuit includes: fifth resistance R5, sixth resistance R6, third electric capacity C3, fourth electric capacity C4 and second triode Q2, wherein: a first end of the fifth resistor R5 is connected to a voltage output end of the step-down circuit, and a second end of the fifth resistor R5 is connected to a base of the second triode Q2. A first end of the sixth resistor R6 is connected to a first end of the third capacitor C3, and a second end of the sixth resistor R6 is connected to a base of the second triode Q2. And the second end of the third capacitor C3 is grounded. A first end of the fourth capacitor C4 is connected to a first end of the sixth resistor R6, and a second end of the fourth capacitor C4 is grounded. And the collector of the second triode is connected with the voltage output end of the voltage reduction circuit, and the emitter of the second triode serving as the output end of the time delay circuit is connected with the input end of the signal generation circuit.
Illustratively, the resistance values of the fifth resistor R5 and the sixth resistor R6 are, for example, 200K ohms with an accuracy of, for example, 5%, the capacitance values of the third capacitor C3 and the fourth capacitor C4 are, for example, 10uF, and the maximum withstand voltage is, for example, 6.3V.
By adopting the scheme, the time delay circuit comprises the simple capacitor, the resistor, the triode and the like, the cost is low, when the power supply of the voltage reduction circuit is received, a high level signal of second level and above, namely a wake-up sequence, can be generated, the fluctuation of the high level signal in the whole period is small, and then the signal generation circuit generates a wake-up signal to trigger the electronic equipment to enter a boot starting state, the process is simple, and the power consumption is small.
Referring to fig. 5 again, in an embodiment, the signal generating circuit includes a seventh resistor R7, an eighth resistor R8, a fifth capacitor C5, and a third transistor Q3, wherein: a first end of the seventh resistor R7 is connected to the output end of the delay circuit, and a second end of the seventh resistor R7 is connected to the base of the third triode. A first end of the eighth resistor R8 is connected to a collector of the third triode, and a second end of the eighth resistor R8 is connected to an output end of the signal generating circuit. The first end of the fifth capacitor C5 is connected to the base of the third triode, and the second end of the fifth capacitor C5 is grounded. The emitter of the third triode Q3 is grounded.
Illustratively, the resistances of the seventh resistor R7 and the eighth resistor R8 are, for example, 1K ohm with an accuracy of, for example, 5%. The capacitance value of the fifth capacitor is, for example, 100nF, and the maximum withstand voltage is, for example, 50V. The black filled triangle TP2 in the figure represents the connection point of the signal generating circuit and the main control module of the electronic device.
By adopting the scheme, the signal generating circuit comprises simple devices such as a capacitor, a resistor and a triode, the cost is low, when the wake-up sequence of the delay circuit is received, the wake-up signal triggers the electronic equipment to enter the boot starting state, the process is simple, and the power consumption is low.
Referring to fig. 5 again, in an embodiment, the discharge circuit includes a first diode D1 and a ninth resistor R9, wherein a cathode of the first diode D1 is connected to the voltage output terminal of the voltage dropping circuit, and an anode of the first diode D1 is connected to a non-connection terminal of the capacitor in the delay circuit. A first end of the ninth resistor R9 is connected to the cathode of the first diode D1, and a second end of the ninth resistor R9 is grounded.
Illustratively, the ninth resistor R9 has a resistance of, for example, 1K ohm, an accuracy of, for example, 5%, and the like. The capacitors in the delay circuit include the third capacitor C3 and the fourth capacitor C4.
By adopting the scheme, the discharge circuit comprises simple devices such as a resistor and a diode, the cost is low, and based on the single-phase conduction characteristic of the diode, when the wide-range voltage reduction circuit supplies power, the diode is in a cut-off state; when the voltage reduction circuit stops supplying power, the diode is in a conducting state, the electric quantity stored by the capacitor in the delay circuit is quickly discharged, and through slow charging and quick discharging of the capacitor, when the USB interface of the electronic equipment is in a pulling-out state, the capacitor in the delay circuit is quickly discharged by the discharge circuit, so that the delay circuit can correctly respond when the USB interface of the electronic equipment is in a plug-in state next time.
Referring to fig. 5 again, in an embodiment, the power on/off identification circuit includes: a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a fourth transistor Q4, a sixth capacitor C6, and a second diode D2, wherein: a collector of the fourth triode Q4 is connected to the input terminal of the signal generating circuit, a base of the fourth triode Q4 is connected to the first end of the tenth resistor R10, and an emitter of the fourth triode Q4 is grounded. A second end of the tenth resistor R10 is connected to the anode of the second diode D2. A first end of the eleventh resistor R11 is connected to the base of the fourth triode Q4, and a second end of the eleventh resistor R11 is grounded. A first end of the twelfth resistor R12 is connected to the anode of the second diode D2, and a second end of the twelfth resistor R12 is connected to the main control module. And the cathode of the second diode D2 is connected with the output end of the signal generating circuit.
Illustratively, the tenth resistor R10 has a resistance of, for example, 10K ohms with an accuracy of, for example, 5%, the eleventh resistor R11 has a resistance of, for example, 47K ohms with an accuracy of, for example, 1%, and the twelfth resistor R12 has a resistance of, for example, 1K ohms with an accuracy of, for example, 5%. The capacitance value of the sixth capacitor C6 is, for example, 1uF, and the maximum withstand voltage is, for example, 16V. The black filled triangle TP3 in the figure represents the connection point of the on/off identification circuit and the main control module of the electronic device.
By adopting the scheme, the startup and shutdown identification circuit comprises simple resistors, capacitors, triodes, diodes and other devices, the cost is low, and when the electronic equipment enters a boot program startup state, the startup and shutdown identification circuit triggers the circuit to be locked, so that the signal generation circuit is ensured not to repeatedly send a startup signal to the main control module when the electronic equipment is in the startup state, and errors are avoided.
Based on the USB plug-in triggering power-on circuit, an embodiment of the present application further provides an electronic device, which includes a USB interface and a main control module. When the USB interface of the electronic equipment is in the inserting state, the USB interface of the electronic equipment in the shutdown state is detected through the startup trigger module with low cost, so that when a user operates the USB interface of the electronic equipment, the electronic equipment is in the boot startup state quickly.
Fig. 6 is a schematic structural diagram of an electronic device provided in an embodiment of the present application. Referring to fig. 6, the electronic device 600 includes: a processor 601 and a memory 602. Among other things, processor 601 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so on. The processor 601 may include an Application Processor (AP), a modem processor, a Graphic Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a memory, a video codec, a Digital Signal Processor (DSP), a baseband processor, a neural-Network Processing Unit (NPU), and the like. Wherein, the different processing units may be independent devices or may be integrated in one or more processors.
In some embodiments, the electronic device 600 may further optionally include: a peripheral interface 603 and at least one peripheral. The processor 601, memory 602, and peripheral interface 603 may be connected by buses or signal lines. Various peripheral devices may be connected to the peripheral interface 603 via a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of a radio frequency circuit 604, a display 605, a camera assembly 606, an audio circuit 607, a positioning assembly 608, and a power supply 609.
The peripheral interface 603 may be used to connect at least one Input/Output (I/O) related peripheral to the processor 601 and the memory 602. In some embodiments, the processor 601, memory 602, and peripheral interface 603 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 601, the memory 602, and the peripheral interface 603 may be implemented on separate chips or circuit boards, which is not limited in this embodiment.
The Radio Frequency circuit 604 is used for receiving and transmitting Radio Frequency (RF) signals, also called electromagnetic signals. The radio frequency circuitry 604 communicates with a communication network and other communication devices via electromagnetic signals. The rf circuit 604 converts an electrical signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 604 comprises: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuitry 604 may communicate with other electronic devices via at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: metropolitan area networks, various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or Wireless Fidelity (Wi-Fi) networks. In some embodiments, the radio frequency circuitry 604 may also include Near Field Communication (NFC) related circuitry, which is not limited by this disclosure.
The display 605 is used for displaying a display screen (UI). The UI may include graphics, text, icons, video, and any combination thereof. When the display screen 605 is a touch display screen, the display screen 605 also has the ability to capture touch signals on or above the surface of the display screen 605. The touch signal may be input to the processor 601 as a control signal for processing. At this point, the display 605 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the display 605 may be one, providing the front panel of the electronic device 600; the Display 605 may be made of Liquid Crystal Display (LCD), organic Light-Emitting Diode (OLED), or the like.
The camera assembly 606 is used to capture images or video. Optionally, camera assembly 606 includes a front camera and a rear camera. Generally, a front camera is disposed on a front panel of an electronic apparatus, and a rear camera is disposed on a rear surface of the electronic apparatus. The audio circuitry 607 may include a microphone and a speaker. The microphone is used for collecting sound waves of a user and the environment, converting the sound waves into electric signals, and inputting the electric signals to the processor 601 for processing or inputting the electric signals to the radio frequency circuit 604 to realize voice communication. For stereo capture or noise reduction purposes, the microphones may be multiple and disposed at different locations of the electronic device 600. The microphone may also be an array microphone or an omni-directional pick-up microphone. The speaker is used to convert the electrical signals from the processor 601 or the radio frequency circuit 604 into sound waves. The loudspeaker can be a traditional film loudspeaker or a piezoelectric ceramic loudspeaker. When the speaker is a piezoelectric ceramic speaker, the speaker can be used for purposes such as converting an electric signal into a sound wave audible to a human being, or converting an electric signal into a sound wave inaudible to a human being to measure a distance. In some embodiments, audio circuitry 607 may also include a headphone jack.
The positioning component 608 is used to locate a current geographic Location of the electronic device 600 to implement navigation or Location Based Service (LBS). The Positioning component 608 can be a Global Positioning System (GPS), a beidou System, a graves System, or a galileo System based Positioning component.
The USB interface 609 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 609 may be used to connect a charger to charge the electronic device, may also be used to transmit data between the electronic device and a peripheral device, and may also be used to connect an earphone to play audio through the earphone. A USB plug-in triggering boot circuit 611 is disposed between the USB interface 609 and the processor 601, and is used for triggering the electronic device 600 to enter a boot program starting state when the USB interface 609 is in a plug-in state.
In some embodiments, the electronic device 600 also includes one or more sensors 610. The one or more sensors 610 include, but are not limited to: acceleration sensors, gyroscope sensors, pressure sensors, fingerprint sensors, optical sensors, and proximity sensors.
The acceleration sensor may detect the magnitude of acceleration in three coordinate axes of a coordinate system established with the electronic device 600. The gyroscope sensor can detect the body direction and the rotation angle of the electronic device 600, and the gyroscope sensor and the acceleration sensor can cooperatively acquire the 3D action of the user on the electronic device 600. The pressure sensors may be disposed on a side bezel of the electronic device 600 and/or underlying layers of the touch screen display 605. When the pressure sensor is disposed on the side frame of the electronic device 600, a user's holding signal to the electronic device 600 can be detected. The fingerprint sensor is used for collecting fingerprints of users. The optical sensor is used for collecting the intensity of ambient light. Proximity sensors, also known as distance sensors, are typically provided on the front panel of the electronic device 600. The proximity sensor is used to capture the distance between the user and the front of the electronic device 600.
The electronic device 600 may be a mobile phone, a tablet computer, a laptop computer, a desktop computer, a laptop computer, a smart watch, a smart television, a palmtop computer, a game console, a vehicle-mounted electronic device, a commercial electronic device, and the like.
Those skilled in the art will appreciate that the configuration shown in fig. 6 does not constitute a limitation of the electronic device 600, and may include more or fewer components than those shown, or combine certain components, or employ a different arrangement of components.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element.
Claims (10)
1. A USB plug-in triggered power-on circuit, comprising: the USB interface of electronic equipment, USB inserts indicating circuit, delay circuit and signal generation circuit, the step-down circuit with electronic equipment the USB inserts indicating circuit, the delay circuit is connected respectively, the delay circuit with the signal generation circuit is connected, USB insert indicating circuit with the signal generation circuit respectively with electronic equipment's master control module is connected, wherein:
the voltage reduction circuit is used for supplying power to the USB insertion indicating circuit and the delay circuit when the USB interface of the electronic equipment is detected to be in an insertion state;
the USB insertion indicating circuit is used for sending indicating information to the main control module after being powered by the voltage reducing circuit so as to indicate that the USB interface of the main control module is in an insertion state;
the delay circuit is used for generating a wake-up sequence after being powered by the voltage reduction circuit and sending the wake-up sequence to the signal generation circuit;
the signal generating circuit is used for generating a wake-up signal according to the wake-up sequence and sending the wake-up signal to the main control module so as to wake up the main control module and start a boot program of the electronic equipment.
2. The circuit of claim 1, wherein the voltage-reduction circuit comprises: the circuit comprises a first chip, a first resistor, a second resistor, a third resistor, a first capacitor and a second capacitor; wherein:
a voltage input pin of the first chip is connected with a voltage output end of the USB interface, an enable pin of the first chip is connected with a first end of the first resistor, an adjusting pin of the first chip is connected with a first end of the second resistor, a voltage output pin of the first chip is connected with the USB insertion indicating circuit and the time delay circuit, and a grounding pin of the first chip is grounded;
the second end of the first resistor is connected with a voltage input pin of the first chip;
the second end of the second resistor is connected with a voltage output pin of the first chip;
the first end of the third resistor is connected with the adjusting pin of the first chip, and the second end of the third resistor is grounded;
the first end of the first capacitor is connected with a voltage output pin of the first chip, and the second end of the first capacitor is grounded;
and the first end of the second capacitor is connected with the second end of the first resistor, and the second end of the second capacitor is grounded.
3. The circuit of claim 1, wherein the USB insertion indication circuit comprises: fourth resistance and first triode, wherein:
the first end of the fourth resistor is connected with a low-voltage-drop voltage stabilizer in the USB insertion indicating circuit, and the second end of the fourth resistor is connected with the main control module;
the base electrode of the first triode is connected with the voltage output end of the voltage reduction circuit, the collector electrode of the first triode is connected with the main control module, and the emitting electrode of the first triode is grounded.
4. The circuit of claim 1, wherein the delay circuit comprises: fifth resistance, sixth resistance, third electric capacity, fourth electric capacity and second triode, wherein:
the first end of the fifth resistor is connected with the voltage output end of the voltage reduction circuit, and the second end of the fifth resistor is connected with the base electrode of the second triode;
a first end of the sixth resistor is connected with a first end of the third capacitor, and a second end of the sixth resistor is connected with a base electrode of the second triode;
the second end of the third capacitor is grounded;
the first end of the fourth capacitor is connected with the first end of the sixth resistor, and the second end of the fourth capacitor is grounded;
and the collector of the second triode is connected with the voltage output end of the voltage reduction circuit, and the emitter of the second triode serving as the output end of the time delay circuit is connected with the input end of the signal generation circuit.
5. The circuit of claim 1, wherein the signal generation circuit comprises: seventh resistance, eighth resistance, fifth electric capacity and third triode, wherein:
the first end of the seventh resistor is connected with the output end of the delay circuit, and the second end of the seventh resistor is connected with the base electrode of the third triode;
the first end of the eighth resistor is connected with the collector of the third triode, and the second end of the eighth resistor is connected with the output end of the signal generating circuit;
the first end of the fifth capacitor is connected with the base electrode of the third triode, and the second end of the fifth capacitor is grounded;
and the emitter of the third triode is grounded.
6. The circuit of any one of claims 1-5, further comprising:
and the discharging circuit is connected with the voltage reduction circuit and the time delay circuit and used for discharging the time delay circuit when the voltage reduction circuit does not supply power any more.
7. The circuit of claim 6, wherein the discharge circuit comprises: a first diode and a ninth resistor, wherein,
the negative electrode of the first diode is connected with the voltage output end of the voltage reduction circuit, and the positive electrode of the first diode is connected with the non-connection end of the capacitor in the time delay circuit;
the first end of the ninth resistor is connected with the negative electrode of the first diode, and the second end of the ninth resistor is grounded.
8. The circuit of any one of claims 1-5, further comprising:
and the power-on and power-off identification circuit is connected with the main control module and the signal generation circuit and is used for triggering the signal generation circuit to stop receiving the awakening sequence after the main control module is identified to be awakened.
9. The circuit of claim 8, wherein the power on/off identification circuit comprises: tenth resistance, eleventh resistance, twelfth resistance, fourth triode, sixth electric capacity and second diode, wherein:
a collector of the fourth triode is connected with the input end of the signal generating circuit, a base of the fourth triode is connected with the first end of the tenth resistor, and an emitter of the fourth triode is grounded;
a second end of the tenth resistor is connected with the anode of the second diode;
a first end of the eleventh resistor is connected with a base electrode of the fourth triode, and a second end of the eleventh resistor is grounded;
a first end of the twelfth resistor is connected with the anode of the second diode, and a second end of the twelfth resistor is connected with the main control module;
and the cathode of the second diode is connected with the output end of the signal generating circuit.
10. An electronic device, comprising: USB interface, host module and USB plug-in trigger power-on circuit according to any of claims 1-9.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69332571D1 (en) * | 1992-09-29 | 2003-01-23 | Eizo Nanao Corp | Cathode ray tube display device and method for controlling its power supply |
| CN103973287A (en) * | 2014-05-21 | 2014-08-06 | 华为技术有限公司 | Startup and shutdown machine circuit |
| CN104038038A (en) * | 2014-06-03 | 2014-09-10 | 青岛海信电器股份有限公司 | Startup circuit and electronic equipment |
| CN104536428A (en) * | 2015-01-21 | 2015-04-22 | 广州七喜电子科技有限公司 | Multimedia remote controller |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102202117B (en) * | 2011-04-22 | 2015-01-28 | 中兴通讯股份有限公司 | Electronic device with USB (universal serial bus) interface and USB communication starting method thereof |
| CN105128694A (en) * | 2014-06-03 | 2015-12-09 | 北京现代汽车有限公司 | Method and apparatus for controlling entire vehicle controller power system of electric car |
-
2021
- 2021-03-23 CN CN202110309482.9A patent/CN113114188B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69332571D1 (en) * | 1992-09-29 | 2003-01-23 | Eizo Nanao Corp | Cathode ray tube display device and method for controlling its power supply |
| CN103973287A (en) * | 2014-05-21 | 2014-08-06 | 华为技术有限公司 | Startup and shutdown machine circuit |
| CN104038038A (en) * | 2014-06-03 | 2014-09-10 | 青岛海信电器股份有限公司 | Startup circuit and electronic equipment |
| CN104536428A (en) * | 2015-01-21 | 2015-04-22 | 广州七喜电子科技有限公司 | Multimedia remote controller |
Non-Patent Citations (1)
| Title |
|---|
| "一款USB电源管理系统芯片的设计与实现";王博;《中国优秀硕士学位论文全文数据库》;20110815;正文第1-51页 * |
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