CN211207117U - Hard switching circuit and mobile terminal - Google Patents
Hard switching circuit and mobile terminal Download PDFInfo
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- CN211207117U CN211207117U CN202020078579.4U CN202020078579U CN211207117U CN 211207117 U CN211207117 U CN 211207117U CN 202020078579 U CN202020078579 U CN 202020078579U CN 211207117 U CN211207117 U CN 211207117U
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Abstract
The utility model provides a hard switching circuit and a mobile terminal, relating to the technical field of electronic equipment, comprising a switching circuit, a control circuit and an auxiliary power supply terminal; the switch circuit is connected with the keys in series; when the control equipment is started, a user presses a key, the switch circuit is conducted, so that the control end of the control circuit inputs high level, the equipment main controller is powered on, and the equipment main controller controls the auxiliary power supply end to output high level; when the control equipment is shut down, a user presses the key to enable the switch circuit to be conducted, so that the control end of the control circuit maintains a high level, the main equipment controller controls the auxiliary power supply end to output a low level, and when the user releases the key, the control end of the control circuit inputs the low level, and the main equipment controller is powered off. The hard switching circuit can cut off the external power supply of the equipment battery when the equipment is shut down, so that no extra power consumption exists, and the technical problem of high power consumption in the shutdown state of the switching circuit in the prior art is effectively solved.
Description
Technical Field
The utility model belongs to the technical field of electronic equipment's technique and specifically relates to a hard on-off circuit and mobile terminal are related to.
Background
With the increasing popularization of emerging intelligent product applications, intelligent products are generally equipped with batteries to meet mobile applications, so that the standby time requirement of the products is high, but many products in the market are generally controlled by software switching circuits, so that the problem that the batteries are not charged after the devices are always put for a period of time even though the devices are shut down is caused.
In summary, the switching circuit in the prior art has a technical problem of large power consumption in the shutdown state.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hard on-off circuit and mobile terminal to the on-off circuit who has alleviated among the prior art has the big technical problem of power consumption under the power off state.
In a first aspect, an embodiment provides a hard switching circuit, including: the power supply circuit comprises a switching circuit, a control circuit and an auxiliary power supply end; the switch circuit is connected with a key in series;
the output end of the equipment battery is respectively connected with the input end of the switching circuit and the input end of the control circuit, and the control end of the control circuit is respectively connected with the output end of the switching circuit and the auxiliary power supply end; the output end of the control circuit is connected with the power supply end of the equipment main controller;
when the control equipment is started, a user presses the key, the switch circuit is conducted, so that the control end of the control circuit inputs high level, the equipment main controller is electrified, and the equipment main controller controls the auxiliary power supply end to output high level;
when the equipment is controlled to be powered off, a user presses the key to enable the switching circuit to be switched on, so that the control end of the control circuit maintains a high level, the main equipment controller controls the auxiliary power supply end to output a low level, when the user releases the key, the control end of the control circuit inputs the low level, and the main equipment controller is powered off.
In an alternative embodiment, the hard switching circuit further comprises: a first diode;
the anode of the first diode is connected with the auxiliary power supply end, and the cathode of the first diode is connected with the control end of the control circuit.
In an alternative embodiment, the switching circuit comprises: a key and a second diode;
the first end of the key is connected with the output end of the equipment battery, the second end of the key is connected with the anode of the second diode, and the cathode of the second diode is connected with the control end of the control circuit.
In an alternative embodiment, the control circuit comprises: a first sub-control circuit and a second sub-control circuit;
the first end of the first sub-control circuit is respectively connected with the cathode of the first diode and the cathode of the second diode, and the second end of the first sub-control circuit is connected with the first end of the second sub-control circuit; the third end of the first sub-control circuit is connected with a ground end GND;
and the second end of the second sub-control circuit is connected with the output end of the equipment battery, and the third end of the second sub-control circuit is connected with the power supply end of the equipment main controller.
In an alternative embodiment, the first sub-control circuit comprises: the circuit comprises a first resistor, a second resistor and a first switching tube;
the first end of the first resistor is respectively connected with the cathode of the first diode and the cathode of the second diode, and the second end of the first resistor is respectively connected with the first end of the second resistor and the base of the first switch tube;
and the collector of the first switch tube is connected with the first end of the second sub-control circuit, and the emitter of the first switch tube and the second end of the second resistor are connected with a ground end GND.
In an alternative embodiment, the second sub-control circuit comprises: the third resistor, the fourth resistor and the second switch tube;
the output end of the equipment battery is respectively connected with the first end of the third resistor and the source electrode of the second switching tube, and the second end of the third resistor is respectively connected with the first end of the fourth resistor and the collector electrode of the first switching tube;
and the second end of the fourth resistor is connected with the grid electrode of the second switching tube, and the drain electrode of the second switching tube is connected with the power supply end of the equipment main controller.
In an optional embodiment, the second sub-control circuit further comprises: a third diode;
and the anode of the third diode is connected with the drain electrode of the second switching tube, and the cathode of the third diode is connected with the power supply end of the equipment main controller.
In an alternative embodiment, the hard switching circuit further comprises: a fifth resistor, a sixth resistor and a capacitor;
the first end of the fifth resistor is respectively connected with the second end of the key, the first end of the capacitor and the first end of the sixth resistor, and the second end of the fifth resistor and the second end of the capacitor are connected with a ground end GND;
and the second end of the sixth resistor is connected with an additional function control end SWK.
In an alternative embodiment, the third diode comprises: a schottky diode.
In a second aspect, embodiments provide a mobile terminal comprising a hard switch circuit as described in any of the preceding embodiments.
The utility model provides a hard switching circuit, which comprises a switching circuit, a control circuit and an auxiliary power supply end; the switch circuit is connected with the keys in series; the output end of the equipment battery is respectively connected with the input end of the switching circuit and the input end of the control circuit, and the control end of the control circuit is respectively connected with the output end of the switching circuit and the auxiliary power supply end; the output end of the control circuit is connected with the power supply end of the equipment main controller; when the control equipment is started, a user presses a key, the switch circuit is conducted, so that the control end of the control circuit inputs high level, the equipment main controller is powered on, and the equipment main controller controls the auxiliary power supply end to output high level; when the control equipment is shut down, a user presses the key to enable the switch circuit to be conducted, so that the control end of the control circuit maintains a high level, the main equipment controller controls the auxiliary power supply end to output a low level, and when the user releases the key, the control end of the control circuit inputs the low level, and the main equipment controller is powered off. The hard switching circuit can cut off the external power supply of the equipment battery when the equipment is shut down, so that no extra power consumption exists, and the technical problem of high power consumption in the shutdown state of the switching circuit in the prior art is effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a hard switching circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an alternative hard switching circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another alternative hard switching circuit provided in an embodiment of the present invention;
fig. 4 is a schematic circuit connection diagram of a hard switching circuit according to an embodiment of the present invention;
fig. 5 is a schematic circuit connection diagram of an alternative hard switching circuit according to an embodiment of the present invention;
fig. 6 is a schematic circuit connection diagram of another alternative hard switching circuit according to an embodiment of the present invention.
Icon: 10-a switching circuit; 20-a control circuit; 21-a first sub-control circuit; 22-second sub-control circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Example one
The embodiment of the utility model provides a hard on-off circuit, as shown in FIG. 1, this hard on-off circuit includes: a switch circuit 10, a control circuit 20 and an auxiliary power supply terminal Vcong; the switch circuit 10 is connected with the keys S in series (not shown in fig. 1, please refer to fig. 2).
The output end VBAT of the device battery is connected to the input end of the switching circuit 10 and the input end of the control circuit 20, respectively, and the control end of the control circuit 20 is connected to the output end of the switching circuit 10 and the auxiliary power supply end Vcong, respectively; the output of the control circuit 20 is connected to the supply terminal VCC of the device main controller.
When the control device is started, a user presses the key S, the switch circuit 10 is switched on, so that the control end of the control circuit 20 inputs a high level, the device main controller is powered on, and the device main controller controls the auxiliary power supply end Vcong to output the high level.
When the control device is turned off, a user presses the key S to turn on the switch circuit 10, so that the control terminal of the control circuit 20 maintains a high level, the device main controller controls the auxiliary power supply terminal Vcong to output a low level, and when the user releases the key S, the control terminal of the control circuit 20 inputs the low level, and the device main controller is powered off.
Specifically, in the embodiment of the utility model provides an in, control circuit 20's input is connected with the output VBAT of equipment battery, control circuit 20's control end is connected with switch circuit 10's output and supplementary power supply end Vcong respectively, control circuit 20's output is connected with equipment main control unit's feed end VCC, when control circuit 20's control end input high level, control circuit 20 just can switch on, so that equipment main control unit obtains supply voltage, and then equipment start, consequently, as long as guarantee switch circuit 10's output and the wherein one end output high level of supplementary power supply end Vcong, just can the controlgear start.
In the embodiment of the present invention, a key S is connected in series in the switch circuit 10, when the control device executes the power-on operation, the user presses the key S connected in series in the switch circuit 10, so that the switching circuit 10 is turned on, the output terminal of the switching circuit 10 (the input terminal of the control circuit 20) is at a high level, and the device is turned on, at this time, the device main controller controls the auxiliary power supply terminal Vcong to output a high level, that is, in the present state, both ends (the output end of the switching circuit 10 and the auxiliary power supply end Vcong) connected to the control end of the control circuit 20 are at the high level, at this time, even if the user releases the key S, the switch circuit 10 is turned off, the output terminal of the switch circuit 10 outputs a low level, however, since the auxiliary power supply terminal Vcong is output at a high level, the control circuit 20 can maintain the on state, the power supply of the device main controller is still normal, and the device maintains the on state.
When the control device executes a shutdown operation, a user needs to press a key S first to control the switching circuit 10 to be turned on, and at the same time, the device main controller controls the auxiliary power supply terminal Vcong to output a low level, that is, in the current state, of the two ends connected to the control terminal of the control circuit 20, the output terminal of the switching circuit 10 is a high level, the output terminal of the auxiliary power supply terminal Vcong is a low level, the control circuit 20 can maintain the on state, the power supply of the device main controller is still normal, next, when the user releases the key S, the switching circuit 10 is in the off state, the output terminal of the switching circuit 10 is a low level, at this time, the two ends connected to the control terminal of the control circuit 20 (the output terminal of the switching circuit 10 and the auxiliary power supply terminal Vcong) are both low levels, the control circuit 20 is in the off state, the device main controller loses the power supply, and.
The utility model provides a hard on-off circuit, including switch circuit 10, control circuit 20 and auxiliary power supply end Vcong; the switch circuit 10 is connected with a key S in series; the output end VBAT of the device battery is connected to the input end of the switching circuit 10 and the input end of the control circuit 20, respectively, and the control end of the control circuit 20 is connected to the output end of the switching circuit 10 and the auxiliary power supply end Vcong, respectively; the output end of the control circuit 20 is connected with a power supply end VCC of the equipment main controller; when the control equipment is started, a user presses a key S, the switch circuit 10 is conducted, so that the control end of the control circuit 20 inputs high level, the equipment main controller is powered on, and the equipment main controller controls the auxiliary power supply end Vcong to output high level; when the control device is turned off, a user presses the key S to turn on the switch circuit 10, so that the control terminal of the control circuit 20 maintains a high level, the device main controller controls the auxiliary power supply terminal Vcong to output a low level, and when the user releases the key S, the control terminal of the control circuit 20 inputs the low level, and the device main controller is powered off. The hard switching circuit can cut off the external power supply of the equipment battery when the equipment is shut down, so that no extra power consumption exists, and the technical problem of high power consumption in the shutdown state of the switching circuit in the prior art is effectively solved.
The structure of the hard switching circuit provided by the present invention has been briefly described above, and the specific structure thereof will be described in detail below.
In an alternative embodiment, as shown in fig. 2, the hard switching circuit further includes: the first diode D1.
The anode of the first diode D1 is connected to the auxiliary power terminal Vcong, and the cathode of the first diode D1 is connected to the control terminal of the control circuit 20.
Specifically, in order to guarantee that the output level of auxiliary power supply end Vcong does not receive the level influence of switch circuit 10's output, the utility model discloses add a one-way first diode D1 who switches on between auxiliary power supply end Vcong and control circuit 20's control end, guarantee that auxiliary power supply end Vcong can only one-way output, can not reverse phase input, and then prevent that reverse current from damaging the inner structure of auxiliary power supply end Vcong correlation circuit.
With the same design concept as the auxiliary power supply terminal Vcong, a second diode D2 for ensuring unidirectional output is also provided in the switch circuit 10, and it has been pointed out above that the switch circuit 10 is connected in series with the key S, so that, in an alternative embodiment, the switch circuit 10 of the present embodiment includes: a key S and a second diode D2.
The first end of the key S is connected to the output end VBAT of the device battery, the second end of the key S is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the control end of the control circuit 20.
As can be seen from the above circuit connection relationship, when the key S is pressed, the switch circuit 10 is in the on state, and the voltage is outputted to the control terminal of the control circuit 20 in one direction, and the output voltage is not affected by the output level of the auxiliary power supply terminal Vcong.
The circuits before the control end of the control circuit 20 are described in detail above, and the specific structure of the control circuit 20 is described below.
In an alternative embodiment, as shown in fig. 3, the control circuit 20 includes: a first sub-control circuit 21 and a second sub-control circuit 22.
A first end of the first sub-control circuit 21 is connected with a cathode of the first diode D1 and a cathode of the second diode D2, respectively, and a second end of the first sub-control circuit 21 is connected with a first end of the second sub-control circuit 22; the third terminal of the first sub-control circuit 21 is connected to the ground GND.
The second end of the second sub-control circuit 22 is connected to the output end VBAT of the device battery, and the third end of the second sub-control circuit 22 is connected to the power supply terminal VCC of the device main controller.
Specifically, in the embodiment of the present invention, the control circuit 20 specifically includes the first sub-control circuit 21 and the second sub-control circuit 22, and according to the above circuit connection relationship, only when the first sub-control circuit 21 and the second sub-control circuit 22 are both in the on state, the power supply terminal VCC of the device main controller can obtain the power supply voltage, when the negative electrode of the first diode D1, and/or, when the negative electrode output of the second diode D2 is the high level, the first terminal of the first sub-control circuit 21 is connected to the high level, the first sub-control circuit 21 is connected to the power supply terminal VCC, and then the second sub-control circuit 22 is controlled to be connected to the power supply terminal VCC of the main control device, so that the third terminal of the second sub-control circuit 22 outputs the high level, the power supply terminal VCC of the main control device obtains the power supply voltage, and the device.
When the negative output of the first diode D1 and the negative output of the second diode D2 are both low level, the first terminal of the first sub-control circuit 21 is connected to low level, the first sub-control circuit 21 is disconnected, and the second sub-control circuit 22 is also in a disconnected state, at this time, the third terminal of the second sub-control circuit 22 outputs low level, the power supply terminal VCC of the device main controller is not connected to the power supply voltage, and the device is in a shutdown state.
In an alternative embodiment, as shown in fig. 4, the first sub-control circuit 21 includes: a first resistor R1, a second resistor R2 and a first switch tube Q1.
A first end of the first resistor R1 is connected to a cathode of the first diode D1 and a cathode of the second diode D2, respectively, and a second end of the first resistor R1 is connected to a first end of the second resistor R2 and a base of the first switch Q1, respectively.
The collector of the first switch Q1 is connected to the first terminal of the second sub-control circuit 22, and the emitter of the first switch Q1 and the second terminal of the second resistor R2 are connected to the ground GND.
Specifically, in the embodiment of the present invention, the first sub-control circuit 21 includes a first resistor R1, a second resistor R2, and a first switch tube Q1, and it can be known from the above circuit connection relationship that the first resistor R1 and the second resistor R2 constitute a voltage divider circuit, so as to ensure that when the first end of the first resistor R1 is connected to a high level, the first switch tube Q1 is controlled to be in a conducting state, and when the first end of the first resistor R1 is connected to a low level, the first switch tube Q1 is controlled to be in a blocking state, preferably, the first switch tube Q1 adopts an NPN type triode.
In an alternative embodiment, as shown in fig. 4, the second sub-control circuit 22 includes: a third resistor R3, a fourth resistor R4 and a second switch tube Q2.
The output end VBAT of the device battery is respectively connected to the first end of the third resistor R3 and the source of the second switch transistor Q2, and the second end of the third resistor R3 is respectively connected to the first end of the fourth resistor R4 and the collector of the first switch transistor Q1.
The second terminal of the fourth resistor R4 is connected to the gate of the second switch Q2, and the drain of the second switch Q2 is connected to the power supply terminal VCC of the device main controller.
In the embodiment of the present invention, the second sub-control circuit 22 includes: according to the circuit connection relationship, the third resistor R3, the fourth resistor R4 and the second switch tube Q2, the output end VBAT of the device battery, the third resistor R3 and the fourth resistor R4 form a static pull-up circuit, so that when the first switch tube Q1 is not conducted, the second switch tube Q2 outputs a stable low level, when the first switch tube Q1 is conducted, the second switch tube Q2 is conducted therewith, and the power supply end VCC of the device main controller obtains a power supply voltage, preferably, the second switch tube Q2 may adopt a P-channel MOS Field Effect Transistor or a P-channel-enhanced MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor).
In an alternative embodiment, as shown in fig. 5, the second sub-control circuit 22 further includes: and a third diode D3.
The anode of the third diode D3 is connected to the drain of the second switch Q2, and the cathode of the third diode D3 is connected to the power supply terminal VCC of the device main controller.
In order to prevent the reverse current from damaging the device battery, a third diode D3 is additionally arranged between the drain of the second switching tube Q2 and the power supply terminal VCC of the device main controller, preferably, the third diode D3 is a schottky diode, and the schottky diode has the characteristic of small conduction voltage drop, so that the loss of the device battery can be reduced.
The operation flow of the hard switching circuit when performing the device switching operation is described in detail above, and the additional functional circuit part designed based on the above circuit composition structure is specifically described below.
Generally, the switch button S can only be used as a switch, and has no other use, and the button S of the present invention can be used as a normal button S to perform a general operation, so as to realize a multi-purpose function, specifically, in an alternative embodiment, as shown in fig. 6, the hard switching circuit further includes: a fifth resistor R5, a sixth resistor R6 and a capacitor C.
The first end of the fifth resistor R5 is connected to the second end of the key S, the first end of the capacitor C, and the first end of the sixth resistor R6, respectively, and the second end of the fifth resistor R5 and the second end of the capacitor C are connected to the ground GND.
A second terminal of the sixth resistor R6 is connected to the additional function control terminal SWK.
According to the functional description of the hard switch circuit, when the device is in the on state, no matter whether the key S in the switch circuit 10 is pressed or not, no influence is generated on the operation of the device, so that the function of the key S in the on state can be expanded, and according to the circuit connection relationship, the fifth resistor R5 is used as a pull-down resistor, so that the state of the additional function control terminal SWK is ensured to be stable when the key S is not pressed; the capacitor C is arranged before the grounding end GND is connected, and the capacitor C needs a certain charging time, so that misoperation caused by shaking of the key S can be prevented; the sixth resistor R6 is connected in series before the additional function control terminal SWK is connected, so that the effect of limiting the magnitude of the loop current can be achieved, and the circuit structure connected with the additional function control terminal SWK is prevented from being damaged.
To sum up, the embodiment of the utility model provides a hard on-off circuit can let equipment directly cut off the external power supply of equipment battery when shutting down, just get into the dormant mode (still power consumptive) unlike original software shutdown, therefore, equipment does not have extra consumption to produce when shutting down basically, the user is after equipment of stopping use for a period, need not charge in advance when using again, the convenience has also improved user experience, and is further, button in this circuit except can be used for the on-off operation to use, can also use as ordinary button when equipment starts, the multi-purpose effect of a thing has been reached.
Example two
The embodiment of the utility model provides a still provide a mobile terminal, this mobile terminal includes the hard on-off circuit of any kind in the above-mentioned embodiment one.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A hard switching circuit, comprising: the power supply circuit comprises a switching circuit, a control circuit and an auxiliary power supply end; the switch circuit is connected with a key in series;
the output end of the equipment battery is respectively connected with the input end of the switching circuit and the input end of the control circuit, and the control end of the control circuit is respectively connected with the output end of the switching circuit and the auxiliary power supply end; the output end of the control circuit is connected with the power supply end of the equipment main controller;
when the control equipment is started, a user presses the key, the switch circuit is conducted, so that the control end of the control circuit inputs high level, the equipment main controller is electrified, and the equipment main controller controls the auxiliary power supply end to output high level;
when the equipment is controlled to be powered off, a user presses the key to enable the switching circuit to be switched on, so that the control end of the control circuit maintains a high level, the main equipment controller controls the auxiliary power supply end to output a low level, when the user releases the key, the control end of the control circuit inputs the low level, and the main equipment controller is powered off.
2. The hard switch circuit of claim 1, further comprising: a first diode;
the anode of the first diode is connected with the auxiliary power supply end, and the cathode of the first diode is connected with the control end of the control circuit.
3. The hard switch circuit of claim 2, wherein the switching circuit comprises: a key and a second diode;
the first end of the key is connected with the output end of the equipment battery, the second end of the key is connected with the anode of the second diode, and the cathode of the second diode is connected with the control end of the control circuit.
4. The hard switch circuit of claim 3, wherein the control circuit comprises: a first sub-control circuit and a second sub-control circuit;
the first end of the first sub-control circuit is respectively connected with the cathode of the first diode and the cathode of the second diode, and the second end of the first sub-control circuit is connected with the first end of the second sub-control circuit; the third end of the first sub-control circuit is connected with a ground end GND;
and the second end of the second sub-control circuit is connected with the output end of the equipment battery, and the third end of the second sub-control circuit is connected with the power supply end of the equipment main controller.
5. The hard switch circuit of claim 4, wherein the first sub-control circuit comprises: the circuit comprises a first resistor, a second resistor and a first switching tube;
the first end of the first resistor is respectively connected with the cathode of the first diode and the cathode of the second diode, and the second end of the first resistor is respectively connected with the first end of the second resistor and the base of the first switch tube;
and the collector of the first switch tube is connected with the first end of the second sub-control circuit, and the emitter of the first switch tube and the second end of the second resistor are connected with a ground end GND.
6. The hard switch circuit of claim 5, wherein the second sub-control circuit comprises: the third resistor, the fourth resistor and the second switch tube;
the output end of the equipment battery is respectively connected with the first end of the third resistor and the source electrode of the second switching tube, and the second end of the third resistor is respectively connected with the first end of the fourth resistor and the collector electrode of the first switching tube;
and the second end of the fourth resistor is connected with the grid electrode of the second switching tube, and the drain electrode of the second switching tube is connected with the power supply end of the equipment main controller.
7. The hard switch circuit of claim 6, wherein the second sub-control circuit further comprises: a third diode;
and the anode of the third diode is connected with the drain electrode of the second switching tube, and the cathode of the third diode is connected with the power supply end of the equipment main controller.
8. The hard switch circuit of claim 3, further comprising: a fifth resistor, a sixth resistor and a capacitor;
the first end of the fifth resistor is respectively connected with the second end of the key, the first end of the capacitor and the first end of the sixth resistor, and the second end of the fifth resistor and the second end of the capacitor are connected with a ground end GND;
and the second end of the sixth resistor is connected with an additional function control end SWK.
9. The hard switch circuit of claim 7, wherein the third diode comprises: a schottky diode.
10. A mobile terminal, characterized in that it comprises a hard switching circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020078579.4U CN211207117U (en) | 2020-01-14 | 2020-01-14 | Hard switching circuit and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020078579.4U CN211207117U (en) | 2020-01-14 | 2020-01-14 | Hard switching circuit and mobile terminal |
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| CN211207117U true CN211207117U (en) | 2020-08-07 |
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| CN202020078579.4U Active CN211207117U (en) | 2020-01-14 | 2020-01-14 | Hard switching circuit and mobile terminal |
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| CN (1) | CN211207117U (en) |
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2020
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