Triggering startup circuit and integrated chip

Abstract

The utility model discloses a trigger start-up circuit and an integrated chip, the trigger start-up circuit comprises a trigger assembly, a switch circuit and a control circuit, the trigger assembly is used for outputting a trigger signal when being triggered; the input end of the switching circuit is electrically connected with the power supply end, and the output end of the switching circuit is used for being connected with the power supply end of a chip module; the control circuit is electrically connected with the trigger assembly, and the control circuit is connected with the controlled end of the switch circuit; and the control circuit is used for outputting a corresponding control signal according to the trigger signal so as to control the working state of the switching circuit. The utility model aims to improve the use convenience of a user and the working reliability of the integrated chip.

Description

Technical Field

[0001] The present application relates to the technical field of circuit design, and in particular to a trigger power-on circuit and an integrated chip. Background Art

[0002] In the prior art, some chip sets can only be triggered to start up by inserting a USB cable when the power supply is long. During normal use, when the condition of inserting a USB is not met, the device using the chip set cannot be started up without a USB, which brings great inconvenience to users and reduces the user experience. Utility Model Content

[0003] The main purpose of the utility model is to provide a trigger start circuit and an integrated chip, aiming to improve the user convenience and working reliability of the integrated chip.

[0004] To achieve the above object, the utility model provides a trigger start circuit, the trigger start circuit comprising:

[0005] A trigger component, wherein the trigger component is used to output a trigger signal when being triggered;

[0006] A switch circuit, wherein an input end of the switch circuit is electrically connected to a power supply end, and an output end of the switch circuit is used to be connected to a power supply end of a chip module;

[0007] A control circuit, the control circuit is electrically connected to the trigger component, and the control circuit is connected to a controlled end of the switch circuit;

[0008] The control circuit is used to output a corresponding control signal according to the trigger signal to control the working state of the switch circuit.

[0009] Optionally, the control circuit includes:

[0010] a trigger circuit, wherein an input end of the trigger circuit is electrically connected to the trigger component, and an output end of the trigger circuit is electrically connected to the switch circuit;

[0011] The trigger component is used to output a trigger signal to the trigger circuit when triggered, so as to flip the level of the input end of the trigger circuit;

[0012] The trigger circuit is used to output a first control signal to the switch circuit when the level of its own input terminal is flipped, so as to control the operation of the switch circuit.

[0013] Optionally, the trigger component includes a button, and the trigger circuit specifically includes:

[0014] A pull-up resistor, a first end of the pull-up resistor is electrically connected to the power supply end;

[0015] A D trigger, wherein the input end of the D trigger is electrically connected to the second end of the pull-up resistor and the button;

[0016] The button is used to output a trigger signal to the D flip-flop when triggered, so as to flip the level of the input terminal of the D flip-flop;

[0017] The D flip-flop is used to output a first control signal to the switch circuit when the level of its own input terminal is flipped, so as to control the operation of the switch circuit.

[0018] Optionally, the trigger power-on circuit includes:

[0019] a second control circuit, the second control circuit being connected in series between the control circuit and the switch circuit;

[0020] The second control circuit has a control terminal for receiving an external trigger signal and is used to control the working state of the switch circuit according to the control signal and / or the external control signal.

[0021] Optionally, the trigger circuit includes a pull-up resistor and a D trigger, the second control circuit includes an inverter and an AND gate circuit, the first end of the pull-up resistor is electrically connected to the power supply end, and the input end of the D trigger is electrically connected to the second end of the pull-up resistor and the trigger component, respectively; the input end of the inverter is used to access the external trigger signal; the AND gate circuit includes a first input end and a second input end, the first input end is electrically connected to the output end of the inverter, and the second input end is electrically connected to the output end of the control circuit.

[0022] Optionally, the control circuit further includes:

[0023] A delay circuit, wherein an input end of the delay circuit is electrically connected to the trigger component, and an output end of the delay circuit is connected to a controlled end of the switch circuit;

[0024] The delay circuit is used to start timing when the trigger signal is received, and output a corresponding control signal to control the working state of the switch circuit when the timing duration reaches a preset duration.

[0025] Optionally, the trigger component includes a button, the trigger circuit includes a pull-up resistor and a D trigger, the delay circuit includes a delay chip, and the delay chip has an input terminal, an output terminal and an enable terminal;

[0026] Among them, the first end of the pull-up resistor is electrically connected to the power supply end; the input end of the D trigger is electrically connected to the second end of the pull-up resistor and the button respectively; the input end of the delay chip is electrically connected to the power supply end, the enable end is electrically connected to the button, and the output end of the delay chip is electrically connected to the controlled end of the switch circuit.

[0027] Optionally, the control circuit further includes:

[0028] A current limiting resistor, wherein a first end of the current limiting resistor is grounded, and a second end of the current limiting resistor is electrically connected to the button.

[0029] The utility model also proposes an integrated chip, which includes a chip module and any one of the trigger start-up circuits described above.

[0030] The utility model proposes a trigger power-on circuit, which includes a trigger component, a switch circuit and a control circuit. The trigger component is used to output a trigger signal when triggered; the input end of the switch circuit is electrically connected to the power supply end, and the output end of the switch circuit is used to connect to the power supply end of a chip module; the control circuit is electrically connected to the trigger component, and the control circuit is connected to the controlled end of the switch circuit; the control circuit is used to output a corresponding control signal according to the trigger signal to control the working state of the switch circuit.

[0031] In actual applications, for products using integrated chips, such as mobile phones, tablets and other mobile terminal devices, when the device needs to be turned on, the user only needs to trigger the trigger component, and then the control circuit outputs the corresponding control signal according to the trigger signal to control the switch circuit to conduct the path between the power supply end and the chip module power supply end. In this way, the main power supply system of the chip module is connected to the power supply voltage, and the device starts working. Compared with the solution of inserting a USB cable to trigger the power on in the prior art, the power on is controllable after power on, reducing power loss; in addition, for products that do not have the USB power on trigger conditions, the power on is triggered by the trigger component, which improves the reliability of the integrated chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 This is a schematic diagram of a circuit module of an embodiment of a trigger start circuit of the utility model;

[0034] Figure 2 A schematic diagram of a circuit module of another embodiment of the trigger start circuit of the utility model;

[0035] Figure 3 A schematic diagram of a circuit module of another embodiment of the trigger start circuit of the utility model;

[0036] Figure 4 This is a schematic diagram of a circuit module of another embodiment of the trigger start circuit of the utility model;

[0037] Figure 5 A schematic diagram of a circuit module of another embodiment of the trigger start circuit of the utility model;

[0038] Figure 6 A schematic diagram of a circuit module of another embodiment of the trigger start circuit of the utility model;

[0039] Figure 7 A specific circuit diagram of an embodiment of a trigger start circuit of the utility model;

[0040] Figure 8 This is a flowchart of an embodiment of the trigger power-on circuit of the utility model.

[0041] Description of Figure Numbers:

[0042] Label name Label name 10 Trigger Component 20 Switching Circuit 30 Control Circuit 31 Trigger Circuit 32 Delay Circuit 40 Second control circuit 41 AND Gate Circuit 42 Inverter

[0043] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0046] In the prior art, some chip sets can only be triggered to start up by inserting a USB cable when the power supply is long. During normal use, when the condition of inserting a USB is not met, the device using the chip set cannot be started up without a USB, which brings great inconvenience to users and reduces the user experience.

[0047] To this end, the utility model proposes a trigger start circuit, referring to Figure 1 , the trigger start circuit comprises:

[0048] A trigger component 10, wherein the trigger component 10 is used to output a trigger signal when triggered;

[0049] A switch circuit 20, wherein the input end of the switch circuit 20 is electrically connected to the power supply end, and the output end of the switch circuit 20 is used to connect to the power supply end of the chip module;

[0050] A control circuit 30, wherein the control circuit 30 is electrically connected to the trigger component 10, and the control circuit 30 is connected to a controlled end of the switch circuit 20;

[0051] The control circuit 30 is used to output a corresponding control signal according to the trigger signal to control the working state of the switch circuit 20.

[0052] In this embodiment, the control circuit 30 can be implemented by a main controller, such as MCU, DSP (Digital Signal Processing, digital signal processing chip), FPGA (Field Programmable Gate Array, programmable logic gate array chip), PLC, SOC (System On Chip), etc. The trigger component 10 can be implemented by a button, a touch screen, etc. The switch circuit 20 can be implemented by a switch device such as a relay, a contactor, or a switch tube such as a MOS tube, an IGBT tube, a thyristor, a triode, etc.

[0053] Specifically, the trigger component 10 can be implemented by a physical button. That is, a power button can be set on the device. When the user presses the power button, the trigger component 10 will output a trigger signal to the control circuit 30. The control circuit 30 outputs a corresponding control signal to the switch circuit 20 according to the trigger signal, so that the switch circuit 20 conducts the electrical connection path between the power supply end and the power supply end of the chip module, so as to power the chip module in the device, thereby triggering the device to start up.

[0054] In practical applications, for products using integrated chips, such as mobile phones, tablets and other mobile terminal devices, when the device needs to be turned on, the user only needs to trigger the trigger component 10 to connect the path between the power supply end and the chip module power supply end. In this way, the main power supply system of the chip module is connected to the power supply voltage, and the device is turned on and works. Compared with the solution of inserting a USB cable to trigger the power on in the prior art, the power on is controllable after power on, reducing power loss; in addition, for products that do not have the USB power on trigger conditions, the power on is triggered by the trigger component 10, which reduces the limitations of the integrated chip power on method and improves the reliability of the integrated chip operation.

[0055] In one embodiment of the present invention, reference Figure 2 , the control circuit 30 comprises:

[0056] A trigger circuit 31, wherein an input end of the trigger circuit 31 is electrically connected to the trigger component 10, and an output end of the trigger circuit 31 is electrically connected to the switch circuit 20;

[0057] The trigger component 10 is used to output a trigger signal to the trigger circuit 31 when triggered, so as to flip the level of the input end of the trigger circuit 31;

[0058] The trigger circuit 31 is used for outputting a first control signal to the switch circuit 20 when the level of its own input terminal is reversed, so as to control the switch circuit 20 to operate.

[0059] In combination with the above embodiments, the trigger circuit 31 can be implemented by the above main controller, and when the trigger component 10 is triggered, a corresponding trigger signal is output to the main controller, so that the main controller controls the working state of the switch circuit 20. In addition, the trigger circuit 31 can also be implemented by triggers such as D triggers, JK triggers, and peripheral circuits.

[0060] In this embodiment, the trigger component 10 includes a button, and the trigger circuit 31 specifically includes:

[0061] A pull-up resistor, a first end of the pull-up resistor is electrically connected to the power supply end;

[0062] A D trigger, wherein the input end of the D trigger is electrically connected to the second end of the pull-up resistor and the button;

[0063] The button is used to output a trigger signal to the D flip-flop when triggered, so as to flip the level of the input terminal of the D flip-flop;

[0064] The D flip-flop is used to output a first control signal to the switch circuit 20 when the level of its own input terminal is flipped, so as to control the operation of the switch circuit 20 .

[0065] Specifically, refer to Figure 3 , the key switch S is the trigger component 10, R1 is the pull-up resistor, and U1 is the D trigger. When the key is not pressed, that is, S is in the off state, the pull-up resistor R1 pulls up the voltage signal of the D trigger input terminal VIN pin, that is, it presents a high impedance state, and the pull-up resistor pulls up the voltage of the D trigger input pin VIN to a high level. When the user presses the power button, S is in the on state, and the voltage of the D trigger U1 input pin VIN is pulled down to a low level. In this way, when the device is not turned on, the input voltage of U1 will remain at a high level due to the pull-up resistor R1. When the trigger component 10 is triggered, the input voltage of the D trigger U1 will flip from a high level to a low level. When the level of its own input terminal flips, U1 outputs a first control signal to the switch circuit 20 to control the switch circuit 20 to conduct the path between the power terminal and the chip module power terminal to power the integrated chip and turn on the device. Among them, the control signal includes a first control signal.

[0066] It should be noted that the D flip-flop can also output a corresponding first control signal to the switch circuit 20 when its input terminal is flipped from a low-level signal to a high-level signal, thereby triggering the device to start up. It is only necessary to electrically connect the first end of the trigger component 10 to the power supply terminal and the first end of the pull-up resistor R1 to the ground.

[0067] Through the above settings, the pull-up resistor can make the input pin of the D trigger maintain a certain logic level even when no external components are connected, thereby avoiding voltage instability. The pull-up resistor, button and D trigger are used as the trigger circuit 31, and the circuit design is simple, occupies a small area and is low in cost.

[0068] In one embodiment, reference Figure 4 , the trigger start circuit comprises:

[0069] A second control circuit 40, the second control circuit 40 is connected in series between the control circuit 30 and the switch circuit 20;

[0070] The second control circuit 40 has a control terminal for receiving an external trigger signal and is used to control the working state of the switch circuit 20 according to the control signal and / or an external control signal.

[0071] In this embodiment, the second control circuit 40 may be implemented by the above-mentioned main controller, or may be implemented by a circuit composed of an inverter 42 and an AND gate circuit 41 or an OR gate circuit.

[0072] In this embodiment, referring to 5, the trigger circuit 31 includes a pull-up resistor and a D trigger, the second control circuit 40 includes an inverter 42 and an AND gate circuit 41, the first end of the pull-up resistor is electrically connected to the power supply end, the input end of the D trigger is electrically connected to the second end of the pull-up resistor and the trigger component 10 respectively; the input end of the inverter 42 is used to access the external trigger signal; the AND gate circuit 41 includes a first input end and a second input end, the first input end is electrically connected to the output end of the inverter 42, and the second input end is electrically connected to the output end of the control circuit 30.

[0073] In combination with the above embodiments, the initial state of the D trigger input terminal is a high level signal as an example for explanation. When the trigger component 10 is triggered, the D trigger will output a first control signal to the AND gate circuit 41 when the level of its own input pin VIN is reversed, that is, the D trigger will output a low level signal to the AND gate circuit 41 through its own output pin OUT. It can be understood that the external trigger signal is a trigger power-on signal when the USB is inserted into the device. When VBUS is in place, the input terminal of the inverter 42 will receive a high level signal, and output a low level signal to the AND gate circuit 41 through the output terminal of the inverter 42. In this way, no matter whether the user chooses to insert a USB power supply signal or trigger a button to trigger the power-on, as long as at least one of the first input terminal and the second input terminal of the AND gate circuit 41 receives a low level signal, the output terminal of the AND gate circuit 41 will output a corresponding control signal to the switch circuit 20 to control the switch circuit 20 to conduct the path between the power supply terminal and the power supply terminal of the chip module, thereby triggering the power-on.

[0074] It is understandable that the second control circuit 40 can also be implemented by an OR gate circuit. Specifically, the first input end of the OR gate circuit is used to access the external control signal, the second input end of the OR gate circuit is electrically connected to the output end of the D flip-flop, and then the D flip-flop is set to output the first control signal to the AND gate circuit 41 when the initial low level is flipped to a high level, so as to trigger the startup.

[0075] The setting of the second control circuit 40 can ensure that the user can turn on the device by pressing the power button or inserting the USB power supply, thereby improving the user's convenience. In addition, compared with using the main controller as the second control circuit 40, the inverter 42 and the AND gate circuit 41 are selected in this embodiment, which reduces the design cost to a certain extent.

[0076] It is understandable that for devices with trigger buttons, false triggering problems are prone to occur. For example, when a user is walking or running, the mobile phone placed in the pocket may be accidentally triggered to turn on, thereby causing power consumption.

[0077] To this end, in one embodiment, reference Figure 6, the control circuit 30 further includes:

[0078] A delay circuit 32, wherein an input end of the delay circuit 32 is electrically connected to the trigger component 10, and an output end of the delay circuit 32 is connected to a controlled end of the switch circuit 20;

[0079] The delay circuit 32 is used to start timing when receiving the trigger signal, and output a corresponding control signal to control the working state of the switch circuit 20 when the timing duration reaches a preset duration.

[0080] In this embodiment, the delay circuit 32 can be implemented by using the main controller or delay chip described in the above embodiment. This embodiment uses the delay chip as an example for explanation.

[0081] Wherein, the trigger component 10 includes a button, the trigger circuit 31 includes a pull-up resistor and a D trigger, the delay circuit 32 includes a delay chip, and the delay chip has an input terminal, an output terminal and an enable terminal;

[0082] Among them, the first end of the pull-up resistor is electrically connected to the power supply end; the input end of the D trigger is electrically connected to the second end of the pull-up resistor and the button respectively; the input end of the delay chip is electrically connected to the power supply end, the enable end is electrically connected to the button, and the output end of the delay chip is electrically connected to the controlled end of the switch circuit 20.

[0083] Specifically, refer to Figure 7 , U2 is a delay chip, U1 is a D flip-flop, U3 and U4 are inverter 42 and AND gate circuit 41 respectively. In this embodiment, PMOS tube Q is selected as the switch circuit 20. Figure 8 , when the trigger component 10 is triggered, it will output a corresponding trigger signal to the input end of the delay circuit 32, that is, when the user presses the power button, the switch S is turned on, and the enable pin EN of the delay chip U2 receives a low-level signal and starts timing. When the timing duration reaches the preset duration, a low-level signal is output to the input pin VIN of the D trigger U1, so that the signal of the input pin VIN of the D trigger is flipped from a high level to a low level, and the D trigger outputs a low-level signal to U4, so that U4 outputs a corresponding signal to the gate of the PMOS tube Q, Q is turned on, and the main system (Main System) of the chip module is powered, thereby triggering the startup. Among them, the preset duration is set in advance by the R&D personnel according to the actual needs of the user. In addition, when the user inserts a USB to power the power supply end of the chip module, that is, VBUS is in place, the PMOS tube will also be turned on to power the main system, thereby triggering the startup. When the USB is not inserted and the trigger component 10 is not triggered, that is, VBUS is not in place and the button is not pressed, the PMOS tube is in a cut-off state, the main system is not powered, and the system is shut down.

[0084] It should be noted that the control circuit further includes a current limiting resistor, a first end of the current limiting resistor is grounded, and a second end of the current limiting resistor is electrically connected to the button. Figure 7 , R2 is a current limiting resistor, which is used to avoid a short circuit caused by the power supply voltage VSYS directly reaching the ground after the switch S is closed, thereby protecting the circuit and electronic components.

[0085] The setting of the delay circuit 32 can ensure that the power switch circuit 20 will not be turned on immediately after the trigger component 10 is triggered, prolong the on-time of the switch circuit 20, avoid the phenomenon of power loss caused by false triggering, and improve the reliability and safety of the triggering and starting circuit of the utility model. The setting of the current limiting resistor further improves the reliability of the triggering and starting circuit. In addition, the delay time (preset duration) can be set according to the actual needs of the user to meet the needs of the user and improve the user experience.

[0086] The utility model also proposes an integrated chip, which includes a chip module and any one of the trigger start-up circuits described above.

[0087] It is worth noting that since the integrated chip of the utility model is based on the above-mentioned trigger power-on circuit, the embodiments of the integrated chip of the utility model include all technical solutions of all embodiments of the above-mentioned trigger power-on circuit, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0088] The above description is only an optional embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the inventive concept of the utility model, or directly / indirectly used in other related technical fields are included in the scope of the utility model.

Claims

1. A trigger start circuit, characterized in that: The trigger start circuit comprises: A trigger component, wherein the trigger component is used to output a trigger signal when being triggered; A switch circuit, wherein an input end of the switch circuit is electrically connected to a power supply end, and an output end of the switch circuit is used to be connected to a power supply end of a chip module; A control circuit, the control circuit is electrically connected to the trigger component, and the control circuit is connected to a controlled end of the switch circuit; The control circuit is used to output a corresponding control signal according to the trigger signal to control the working state of the switch circuit.

2. The trigger start circuit as claimed in claim 1, characterized in that: The control circuit comprises: a trigger circuit, wherein an input end of the trigger circuit is electrically connected to the trigger component, and an output end of the trigger circuit is electrically connected to the switch circuit; The trigger component is used to output a trigger signal to the trigger circuit when triggered, so as to flip the level of the input end of the trigger circuit; The trigger circuit is used to output a first control signal to the switch circuit when the level of its own input terminal is flipped, so as to control the operation of the switch circuit.

3. The trigger start circuit as claimed in claim 2, characterized in that: The trigger component includes a button, and the trigger circuit specifically includes: A pull-up resistor, a first end of the pull-up resistor is electrically connected to the power supply end; A D trigger, wherein the input end of the D trigger is electrically connected to the second end of the pull-up resistor and the button; The button is used to output a trigger signal to the D flip-flop when triggered, so as to flip the level of the input terminal of the D flip-flop; The D flip-flop is used to output a first control signal to the switch circuit when the level of its own input terminal is flipped, so as to control the operation of the switch circuit.

4. The trigger start circuit according to any one of claims 2 to 3, characterized in that: The trigger start circuit comprises: a second control circuit, the second control circuit being connected in series between the control circuit and the switch circuit; The second control circuit has a control terminal for receiving an external trigger signal and is used to control the working state of the switch circuit according to the control signal and / or the external control signal.

5. The trigger start circuit as claimed in claim 4, characterized in that: The trigger circuit includes a pull-up resistor and a D trigger, the second control circuit includes an inverter and an AND gate circuit, the first end of the pull-up resistor is electrically connected to the power supply end, and the input end of the D trigger is electrically connected to the second end of the pull-up resistor and the trigger component respectively; the input end of the inverter is used to access the external trigger signal; the AND gate circuit includes a first input end and a second input end, the first input end is electrically connected to the output end of the inverter, and the second input end is electrically connected to the output end of the control circuit.

6. The trigger start circuit according to any one of claims 2 to 3, characterized in that: The control circuit further comprises: A delay circuit, wherein an input end of the delay circuit is electrically connected to the trigger component, and an output end of the delay circuit is connected to a controlled end of the switch circuit; The delay circuit is used to start timing when the trigger signal is received, and output a corresponding control signal to control the working state of the switch circuit when the timing duration reaches a preset duration.

7. The trigger start circuit as claimed in claim 6, characterized in that: The trigger component includes a button, the trigger circuit includes a pull-up resistor and a D trigger, the delay circuit includes a delay chip, and the delay chip has an input terminal, an output terminal and an enable terminal; Among them, the first end of the pull-up resistor is electrically connected to the power supply end; the input end of the D trigger is electrically connected to the second end of the pull-up resistor and the button respectively; the input end of the delay chip is electrically connected to the power supply end, the enable end is electrically connected to the button, and the output end of the delay chip is electrically connected to the controlled end of the switch circuit.

8. The trigger start circuit as claimed in claim 7, characterized in that: The control circuit further comprises: A current limiting resistor, wherein a first end of the current limiting resistor is grounded, and a second end of the current limiting resistor is electrically connected to the button.

9. An integrated chip, characterized in that: The integrated chip includes a chip module and a trigger power-on circuit as described in any one of claims 1-8.

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