TW202343200A - Mobile device - Google Patents

Abstract

A mobile device includes an input unit, a metal mechanism element, and a power supply device. The input unit detects a user input. If the user input satisfies a specific condition, the input unit will generate a notification signal. The power supply device includes a bridge rectifier, a transformer, a power switch element, an output stage circuit, a feedback circuit, a PWM (Pulse Width Modulation) IC (Integrated Circuit), a digital control IC, and a discharge circuit. If the digital control IC receives the notification voltage, the digital control IC will generate a control voltage, and therefore the discharge circuit will output a leakage current to the metal mechanism element.

Description

mobile device

The present invention relates to a mobile device, and in particular to a mobile device with a feedback function.

When a power supply is applied to a computer system, it often receives signals related to peripheral components of the computer system. However, traditional power supplies cannot perform corresponding operations based on the aforementioned signals. In view of this, it is necessary to propose a new solution to overcome the difficulties faced by previous technologies.

In a preferred embodiment, the present invention proposes a mobile device, including: an input unit that detects a user input, wherein if the user input meets a specific condition, the input unit will generate a notification potential; a metal Mechanical component; and a power supply, including: a bridge rectifier, which generates a rectified potential according to a first input potential and a second input potential; a transformer, including a main coil, a secondary coil, and an auxiliary coil, The transformer has a built-in exciting inductor, and the main coil is used to receive the rectified potential; a power switch selectively couples the main coil to a ground potential according to a pulse width modulation potential. ; An output stage circuit is coupled to the auxiliary coil and generates an output potential; a feedback circuit is coupled to the auxiliary coil and generates a feedback supply potential; a pulse width modulation integrated circuit is provided by The feedback supply potential is used to provide power and generate the pulse width modulation potential; a digital control integrated circuit is powered by the output potential and coupled to the input unit; and a discharge circuit, wherein if When the digital control integrated circuit receives the notification potential, the digital control integrated circuit will generate a control potential, so that the discharge circuit outputs a leakage current to the metal mechanical component.

In some embodiments, the input unit includes a touch panel module, a keyboard module, and a fingerprint recognition module, and the metal mechanism component is a keyboard frame.

In some embodiments, the bridge rectifier includes: a first diode having an anode and a cathode, wherein the anode of the first diode is coupled to a first input node to receive the first input potential, and the cathode of the first diode is coupled to a first node to output the rectified potential; a second diode has an anode and a cathode, wherein the second diode The anode is coupled to a second input node to receive the second input potential, and the cathode of the second diode is coupled to the first node; a third diode has an anode and a cathode , wherein the anode of the third diode is coupled to the ground potential, and the cathode of the third diode is coupled to the first input node; and a fourth diode having an anode and a cathode, wherein the anode of the fourth diode is coupled to the ground potential, and the cathode of the fourth diode is coupled to the second input node.

In some embodiments, the main coil has a first end and a second end, the first end of the main coil is coupled to the first node to receive the rectified potential, and the second end of the main coil is coupled to a second node, the exciting inductor has a first end and a second end, the first end of the exciting inductor is coupled to the first node, and the second end of the exciting inductor The terminal is coupled to the second node, the secondary coil has a first terminal and a second terminal, the first terminal of the secondary coil is coupled to a third node, and the second terminal of the secondary coil is Coupled to a fourth node, the auxiliary coil has a first end and a second end, the first end of the auxiliary coil is coupled to a fifth node, and the second end of the auxiliary coil is coupled connected to this ground potential.

In some embodiments, the power switch includes: a first transistor having a control terminal, a first terminal, and a second terminal, wherein the control terminal of the first transistor is used to receive the pulse The wave width modulates the potential, the first terminal of the first transistor is coupled to the ground potential, and the second terminal of the first transistor is coupled to the second node.

In some embodiments, the output stage circuit includes: a fifth diode having an anode and a cathode, wherein the anode of the fifth diode is coupled to the third node, and the fifth diode The cathode of the pole body is coupled to an output node to output the output potential; a first resistor has a first end and a second end, wherein the first end of the first resistor is coupled to the fourth node, and the second terminal of the first resistor is coupled to a common node; and a first capacitor having a first terminal and a second terminal, wherein the first terminal of the first capacitor A terminal is coupled to the output node, and the second terminal of the first capacitor is coupled to the common node.

In some embodiments, the feedback circuit includes: a sixth diode having an anode and a cathode, wherein the anode of the sixth diode is coupled to the fifth node, and the sixth second The cathode of the pole body is coupled to a supply node to output the feedback supply potential to the pulse width modulation integrated circuit; and a second capacitor has a first terminal and a second terminal, wherein the first terminal The first terminal of the two capacitors is coupled to the supply node, and the second terminal of the second capacitor is coupled to the ground potential.

In some embodiments, the discharge circuit includes: a third capacitor having a first terminal and a second terminal, wherein the first terminal of the third capacitor is coupled to the first input node, and the third capacitor has a first terminal and a second terminal. The second terminal of the three capacitors is coupled to a sixth node; a fourth capacitor has a first terminal and a second terminal, wherein the first terminal of the fourth capacitor is coupled to the second input node, and the second terminal of the fourth capacitor is coupled to the sixth node; a second resistor has a first terminal and a second terminal, wherein the first terminal of the second resistor is coupled to the sixth node, and the second terminal of the second resistor is coupled to ground; and a fifth capacitor having a first terminal and a second terminal, wherein the fifth capacitor has a first terminal and a second terminal. One terminal is coupled to the fourth node, and the second terminal of the fifth capacitor is coupled to the ground potential.

In some embodiments, the discharge circuit further includes: a third resistor having a first terminal and a second terminal, wherein the first terminal of the third resistor is coupled to a control node to selectively Ground receives the control potential from the digital control integrated circuit, and the second terminal of the third resistor is coupled to a seventh node; a fourth resistor has a first terminal and a second terminal , wherein the first terminal of the fourth resistor is coupled to the control node, and the second terminal of the fourth resistor is coupled to an eighth node; a fifth resistor having a first terminal and a second terminal, wherein the first terminal of the fifth resistor is coupled to the control node, and the second terminal of the fifth resistor is coupled to a ninth node; a second terminal A crystal having a control terminal, a first terminal, and a second terminal, wherein the control terminal of the second transistor is coupled to the seventh node, and the first terminal of the second transistor is coupled to to a tenth node, and the second terminal of the second transistor is coupled to the sixth node; a third transistor has a control terminal, a first terminal, and a second terminal, wherein the The control terminal of the third transistor is coupled to the eighth node, the first terminal of the third transistor is coupled to the tenth node, and the second terminal of the third transistor is coupled to to the sixth node; and a fourth transistor having a control terminal, a first terminal, and a second terminal, wherein the control terminal of the fourth transistor is coupled to the ninth node, the The first terminal of the fourth transistor is coupled to an eleventh node, and the second terminal of the fourth transistor is coupled to the fourth node.

In some embodiments, the discharge circuit further includes: a sixth resistor having a first terminal and a second terminal, wherein the first terminal of the sixth resistor is coupled to the tenth node, and The second terminal of the sixth resistor is coupled to a first connection point on the metal mechanical component; and a seventh resistor has a first terminal and a second terminal, wherein the seventh resistor The first terminal is coupled to the eleventh node, and the second terminal of the seventh resistor is coupled to a second connection point on the metal mechanism component; wherein the common node is coupled to A third connection point on the metal mechanism component; wherein the first connection point and the second connection point are used to selectively receive the leakage current from the discharge circuit.

In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are listed below and described in detail with reference to the accompanying drawings.

Certain words are used in the specification and patent claims to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and the patent application do not use differences in names as a way to distinguish components, but differences in functions of components as a criterion for distinction. The words "include" and "include" mentioned throughout the specification and the scope of the patent application are open-ended terms, and therefore should be interpreted as "include but not limited to." The term "approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem and achieve the basic technical effect within a certain error range. In addition, the word "coupling" in this specification includes any direct and indirect electrical connection means. Therefore, if a first device is coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device via other devices or connections. Two devices.

Figure 1 is a schematic diagram of a mobile device 100 according to an embodiment of the present invention. For example, the mobile device 100 may be a laptop computer. As shown in Figure 1, the mobile device 100 includes an input unit 101, a metal mechanical component 105, and a power supply 110. The power supply 110 includes: a bridge rectifier 120, a transformer 130, and a power switch 140. , an output stage circuit 150, a feedback circuit 160, a pulse width modulation integrated circuit (Pulse Width Modulation Integrated Circuit, PWM IC) 170, a digital control integrated circuit (Digital Control IC) 180, and a discharge Circuit 190. It should be noted that, although not shown in FIG. 1 , the power supply 110 may further include other components, such as a voltage regulator or/and a negative feedback circuit.

The input unit 101 can detect a user input UI. The form and type of the input unit 101 and the user input UI are not particularly limited in the present invention. For example, if the user's input UI meets a specific condition, the input unit 101 will generate a notification potential VN. On the contrary, if the user's input UI fails to meet the aforementioned specific conditions, the input unit 101 will not generate any notification potential VN. In some embodiments, the metal structure component 105 is a keyboard frame. For example, if the mobile device 100 is a notebook computer, the metal mechanism component 105 can be what is commonly known as a "C component" in the field of notebook computers, but is not limited thereto.

The bridge rectifier 120 can generate the rectified potential VR according to a first input potential VIN1 and a second input potential VIN2. Both the first input potential VIN1 and the second input potential VIN2 can come from an external input power supply, wherein an AC voltage with any frequency and any amplitude can be formed between the first input potential VIN1 and the second input potential VIN2. For example, the frequency of the AC voltage can be about 50Hz or 60Hz, and the root mean square value of the AC voltage can be about 90V to 264V, but it is not limited thereto. The transformer 130 includes a primary coil 131, a secondary coil 132, and an auxiliary coil 133, wherein the transformer 130 may have a built-in magnetizing inductor LM. The primary coil 131 , the auxiliary coil 133 , and the exciting inductor LM may be located on the same side of the transformer 130 , while the secondary coil 132 may be located on the opposite side of the transformer 130 . The primary coil 131 can receive the rectified potential VR, and in response to the rectified potential VR, the secondary coil 132 and the auxiliary coil 133 can generate respective induced potentials. The power switch 140 can selectively couple the main coil 131 to a ground potential VSS according to a pulse width modulation potential VA. For example, if the pulse width modulation potential VA is a high logic level (ie, logic “1”), the power switch 140 may couple the main coil 131 to the ground potential VSS (ie, the power switch 140 can be approximated as a short-circuit path); on the contrary, if the pulse width modulation potential VA is a low logic level (that is, logic "0"), the power switch 140 will not couple the main coil 131 to the ground potential. VSS (ie, power switch 140 may approximate an open path). The output stage circuit 150 is coupled to the secondary coil 132 and can generate an output potential VOUT. For example, the output potential VOUT may be a DC potential, and its potential level may be from 18V to 22V, but is not limited thereto. The feedback circuit 160 is coupled to the auxiliary coil 133 and can generate a feedback supply potential VP. The pulse width modulation integrated circuit 170 can be powered by the feedback supply potential VP, and can generate the pulse width modulation potential VA. The digital control integrated circuit 180 can be powered by the output potential VOUT and can be coupled to the input unit 101 . For example, if the output potential VOUT is a high logic level, the digital control integrated circuit 180 will be enabled; conversely, if the output potential VOUT is a low logic level, the digital control integrated circuit 180 will be turned off. In addition, if the digital control integrated circuit 180 receives the notification potential VN from the input unit 101, the digital control integrated circuit 180 will generate a control potential VC, so that the discharge circuit 190 outputs a leakage current IK to the metal mechanism component 105. On the contrary, if the digital control integrated circuit 180 does not receive any notification potential VN, the discharge circuit 190 will not output any leakage current IK. Under this design, the user can obtain a feedback signal about the input unit 101 based on the leakage current IK. That is, when the user finds a slight touch sensation, he or she will be able to understand that the input unit 101 may have received user input IU that meets specific conditions.

The following embodiments will introduce the detailed structure and operation method of the mobile device 100. It must be understood that these drawings and descriptions are only examples and are not intended to limit the scope of the invention.

Figure 2 is a schematic diagram showing a mobile device 200 according to an embodiment of the present invention. In the embodiment of FIG. 2 , the mobile device 200 includes an input unit 201 , a metal mechanical component 205 , and a power supply 210 . Specifically, the power supply 210 has a first input node NIN1, a second input node NIN2, and an output node NOUT, and includes: a bridge rectifier 220, a transformer 230, a power switch 240, and an output stage. circuit 250, a feedback circuit 260, a pulse width modulation integrated circuit 270, a digital control integrated circuit 280, and a discharge circuit 290. The first input node NIN1 and the second input node NIN2 of the power supply 210 can respectively receive a first input potential VIN1 and a second input potential VIN2 from an external input power supply. The output node NOUT of the power supply 210 can output an output potential VOUT to an electronic device (not shown).

The input unit 201 includes a touchpad module (Touchpad Module) 202, a keyboard module (Keyboard Module) 203, and a fingerprint recognition module (Fingerprint Module) 204. For example, each of the touchpad module 202, the keyboard module 203, and the fingerprint recognition module 204 may each include a force sensor (not shown). These force sensors can detect a pressing force and a pressing time inputted by a user into the UI. For example, if the pressing force is greater than a critical value or the pressing time is longer than a predetermined time, the input unit 201 will generate a notification signal VN; otherwise, the input unit 201 will not generate any notification signal VN. In some embodiments, the metal structure component 205 is a keyboard frame, but it is not limited to this.

The bridge rectifier 210 includes a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4. The first diode D1 has an anode and a cathode, wherein the anode of the first diode D1 is coupled to the first input node NIN1, and the cathode of the first diode D1 is coupled to a first node N1 To output the rectified potential VR. The second diode D2 has an anode and a cathode, wherein the anode of the second diode D2 is coupled to the second input node NIN2, and the cathode of the second diode D2 is coupled to the first node N1. The third diode D3 has an anode and a cathode, wherein the anode of the third diode D3 is coupled to a ground potential VSS, and the cathode of the third diode D3 is coupled to the first input node NIN1. The fourth diode D4 has an anode and a cathode, wherein the anode of the fourth diode D4 is coupled to the ground potential VSS, and the cathode of the fourth diode D4 is coupled to the second input node NIN2.

The transformer 230 includes a main coil 231, a secondary coil 232, and an auxiliary coil 233. The transformer 230 may have a built-in magnetizing inductor LM. The exciting inductor LM may be an inherent component produced when the transformer 230 is manufactured, and is not an external independent component. The main coil 231, the auxiliary coil 233, and the exciting inductor LM can all be located on the same side of the transformer 230 (for example, the primary side), while the secondary coil 232 can be located on the opposite side of the transformer 230 (for example, the secondary side). can be isolated from the primary side). The main coil 231 has a first end and a second end, wherein the first end of the main coil 231 is coupled to the first node N1 to receive the rectified potential VR, and the second end of the main coil 231 is coupled to a first node N1. Two nodes N2. The exciting inductor LM has a first end and a second end, wherein the first end of the exciting inductor LM is coupled to the first node N1, and the second end of the exciting inductor LM is coupled to the second node N2 . The secondary coil 232 has a first end and a second end, wherein the first end of the secondary coil 232 is coupled to a third node N3, and the second end of the secondary coil 232 is coupled to a fourth node N4. The auxiliary coil 233 has a first end and a second end, wherein the first end of the auxiliary coil 233 is coupled to a fifth node N5, and the second end of the auxiliary coil 233 is coupled to the ground potential VSS.

The power switch 240 includes a first transistor M1. For example, the first transistor M1 may be an N-type MOSFET. The first transistor M1 has a control terminal (for example: a gate), a first terminal (for example: a source), and a second terminal (for example: a drain), wherein the control terminal of the first transistor M1 The terminal is used to receive a pulse width modulation potential VA, the first terminal of the first transistor M1 is coupled to the ground potential VSS, and the second terminal of the first transistor M1 is coupled to the second node N2.

The output stage circuit 250 includes a fifth diode D5, a first resistor R1, and a first capacitor C1. The fifth diode D5 has an anode and a cathode, wherein the anode of the fifth diode D5 is coupled to the third node N3, and the cathode of the fifth diode D5 is coupled to the output node NOUT. The first resistor R1 has a first terminal and a second terminal, wherein the first terminal of the first resistor R1 is coupled to the fourth node N4, and the second terminal of the first resistor R1 is coupled to a Common node NCM. For example, the common node NCM can be regarded as another ground potential, which can be the same as or different from the aforementioned ground potential VSS. The first capacitor C1 has a first terminal and a second terminal, wherein the first terminal of the first capacitor C1 is coupled to the output node NOUT, and the second terminal of the first capacitor C1 is coupled to the common node NCM.

The feedback circuit 260 includes a sixth diode D6 and a second capacitor C2. The sixth diode D6 has an anode and a cathode, wherein the anode of the sixth diode D6 is coupled to the fifth node N5, and the cathode of the sixth diode D6 is coupled to a supply node NS to output A feedback supplies potential VP to the pulse width modulation integrated circuit 270 . The second capacitor C2 has a first terminal and a second terminal, wherein the first terminal of the second capacitor C2 is coupled to the supply node NS, and the second terminal of the second capacitor C2 is coupled to the ground potential VSS.

The pulse width modulation integrated circuit 270 can generate the aforementioned pulse width modulation potential VA. The pulse width modulation integrated circuit 270 can be powered by the feedback supply potential VP at the supply node NS. Specifically, if the feedback supply potential VP is a high logic level, the pulse width modulation integrated circuit 270 will be activated and output the pulse width modulation potential VA; conversely, if the feedback supply potential VP is If the logic level is low, the PWM integrated circuit 270 will be turned off and stop outputting the PWM potential VA.

The digital control integrated circuit 280 can be powered by the output potential VOUT. For example, if the output potential VOUT is a high logic level, the digital control integrated circuit 280 will be enabled; conversely, if the output potential VOUT is a low logic level, the digital control integrated circuit 280 will be turned off. The digital control integrated circuit 280 is coupled to the input unit 201 and can confirm whether the notification potential VN from the input unit 201 is received. If the digital control integrated circuit 280 has received the notification potential VN, the digital control integrated circuit 280 will output a control potential VC with a high logic level to a control node NC. On the contrary, if the digital control integrated circuit 280 does not receive any notification potential VN, the potential at the control node NC will be maintained at a low logic level.

The discharge circuit 290 includes a second transistor M2, a third transistor M3, a fourth transistor M4, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7. For example, the second transistor M2, the third transistor M3, and the fourth transistor M4 may each be an N-type MOSFET.

The third capacitor C3 has a first terminal and a second terminal, wherein the first terminal of the third capacitor C3 is coupled to the first input node NIN1, and the second terminal of the third capacitor C3 is coupled to a sixth input node NIN1. Node N6. The fourth capacitor C4 has a first terminal and a second terminal, wherein the first terminal of the fourth capacitor C4 is coupled to the second input node NIN2, and the second terminal of the fourth capacitor C4 is coupled to the sixth node. N6. The second resistor R2 has a first terminal and a second terminal, wherein the first terminal of the second resistor R2 is coupled to the sixth node N6, and the second terminal of the second resistor R2 is coupled to the ground. 299. The earth 299 may refer to the earth, or any ground path coupled to the earth, which is not an internal component of the mobile device 200 . The fifth capacitor C5 has a first terminal and a second terminal, wherein the first terminal of the fifth capacitor C5 is coupled to the fourth node N4, and the second terminal of the fifth capacitor C5 is coupled to the ground potential VSS.

The third resistor R3 has a first end and a second end, wherein the first end of the third resistor R3 is coupled to the control node NC to selectively receive the control potential VC from the digital control integrated circuit 280, The second terminal of the third resistor R3 is coupled to a seventh node N7. The fourth resistor R4 has a first terminal and a second terminal, wherein the first terminal of the fourth resistor R4 is coupled to the control node NC, and the second terminal of the fourth resistor R4 is coupled to a first terminal. Eight nodes N8. The fifth resistor R5 has a first terminal and a second terminal, wherein the first terminal of the fifth resistor R5 is coupled to the control node NC, and the second terminal of the fifth resistor R5 is coupled to a first terminal. Nine nodes N9.

The second transistor M2 has a control terminal (for example, a gate), a first terminal (for example, a source), and a second terminal (for example, a drain), wherein the control terminal of the second transistor M2 The terminal is coupled to the seventh node N7, the first terminal of the second transistor M2 is coupled to a tenth node N10, and the second terminal of the second transistor M2 is coupled to the sixth node N6. The third transistor M3 has a control terminal (for example: a gate), a first terminal (for example: a source), and a second terminal (for example: a drain), wherein the control terminal of the third transistor M3 The terminal is coupled to the eighth node N8, the first terminal of the third transistor M3 is coupled to the tenth node N10, and the second terminal of the third transistor M3 is coupled to the sixth node N6. The fourth transistor M4 has a control terminal (for example: a gate), a first terminal (for example: a source), and a second terminal (for example: a drain), wherein the control terminal of the fourth transistor M4 The terminal is coupled to the ninth node N9, the first terminal of the fourth transistor M4 is coupled to an eleventh node N11, and the second terminal of the fourth transistor M4 is coupled to the fourth node N4.

The sixth resistor R6 has a first terminal and a second terminal, wherein the first terminal of the sixth resistor R6 is coupled to the tenth node N10, and the second terminal of the sixth resistor R6 is coupled to the metal There is a first connection point CP1 on the mechanism member 205 . The seventh resistor R7 has a first terminal and a second terminal, wherein the first terminal of the seventh resistor R7 is coupled to the eleventh node N11, and the second terminal of the seventh resistor R7 is coupled to A second connection point CP2 on the metal mechanism component 205 . The common node NCM is coupled to a third connection point CP3 on the metal mechanism component 205 . For example, the first connection point CP1, the second connection point CP2, and the third connection point CP3 may be different from each other.

In some embodiments, the operating principle of the mobile device 200 may be as follows. If the user's input UI meets a specific condition, the input unit 201 will generate the notification potential VN. In response to the notification potential VN, the digital control integrated circuit 280 may output a control signal VC with a high logic level to simultaneously enable the second transistor M2, the third transistor M3, and the fourth transistor M4. At this time, the charges stored on the third capacitor C3 and the fourth capacitor C4 can form a first leakage current IK1, which can flow to the first connection point CP1 of the metal mechanism component 205 through the sixth resistor R6, and finally flow again. Toward the common node NCM (or the third connection point CP3). In addition, the charge stored on the fifth capacitor C5 can form a second leakage current IK2, which can flow to the first connection point CP2 of the metal mechanism component 205 through the seventh resistor R7, and finally flow to the common node NCM (or The third connection point CP3). That is, the first connection point CP1 can selectively receive the first leakage current IK1, and the second connection point CP2 can selectively receive the second leakage current IK2. Since the first leakage current IK1 and the second leakage current IK2 flow through the metal mechanical component 205, the user's palm (usually attached to the metal mechanical component 205) will have a slight touch inductance, which can be used as feedback for the input unit 201 signal. Therefore, the user can know that the input unit 201 has received the user input IU that satisfies the specific condition through the touch induction.

It must be noted that since the digital control integrated circuit 280 is powered by the output potential VOUT, the aforementioned feedback mechanism will only be used when the mobile device 200 is operating normally. In some embodiments, the user can selectively enable or disable the digital control integrated circuit 280 through software control. In other embodiments, the user can also adjust the current values of the first leakage current IK1 and the second leakage current IK2 by changing the resistance values of the sixth resistor R6 and the seventh resistor R7.

Figure 3 shows a signal waveform diagram of the mobile device 200 according to an embodiment of the present invention, in which the horizontal axis represents time and the vertical axis represents potential level or current value. According to the measurement results in Figure 3, if the control potential VC at the control node NC switches from a low logic level to a high logic level, then after a delay time TD, both the first leakage current IK1 and the second leakage current IK2 will gradually rise to provide feedback signals about the input unit 201.

Figure 4 shows a physical configuration diagram of the mobile device 200 according to an embodiment of the present invention. In the embodiment of FIG. 4 , the mobile device 200 is a notebook computer, and the touchpad module 202 , keyboard module 203 , and fingerprint recognition module 204 of the input unit 201 can all be embedded in the metal mechanism component 205 among them. It must be understood that the above configuration is only an example, and in other embodiments, the input unit 201 may also include more or fewer input modules.

In some embodiments, component parameters of the mobile device 200 may be as follows. The inductance value of the magnetizing inductor LM can be between 540μH and 660μH, preferably 600μH. The capacitance value of the first capacitor C1 may be between 544 μF and 816 μF, preferably 680 μF. The capacitance value of the second capacitor C2 may be between 37.6 μF and 56.4 μF, preferably 47 μF. The capacitance value of the third capacitor C3 can be between 376pF and 564pF, preferably 470pF. The capacitance value of the fourth capacitor C4 can be between 376pF and 564pF, preferably 470pF. The capacitance value of the fifth capacitor C5 can be between 120pF and 180pF, preferably 150pF. The resistance value of the first resistor R1 may be approximately 1 mΩ. The resistance value of the second resistor R2 can be between 0.8MΩ and 1.2MΩ, preferably 1MΩ. The resistance value of the third resistor R3 can be between 9.5Ω and 10.5Ω, preferably 10Ω. The resistance value of the fourth resistor R4 can be between 9.5Ω and 10.5Ω, preferably 10Ω. The resistance value of the fifth resistor R5 can be between 9.5Ω and 10.5Ω, preferably 10Ω. The resistance value of the sixth resistor R6 can be between 285Ω and 315Ω, preferably 300Ω. The resistance value of the seventh resistor R7 can be between 285Ω and 315Ω, preferably 300Ω. The turns ratio of the primary coil 231 to the secondary coil 232 can be between 1 and 100, preferably 20. The turns ratio of the main coil 231 to the auxiliary coil 233 can be between 1 and 100, preferably 10. The above parameter range is obtained based on the results of multiple experiments, which helps to optimize the conversion efficiency of the power supply 210 of the mobile device 200 .

The present invention proposes a novel mobile device, which includes a power supply. According to actual measurement results, mobile devices using the above design can provide feedback signals corresponding to the input units through leakage current, so they are very suitable for use in various types of devices.

It is worth noting that the above-mentioned potential, current, resistance value, inductance value, capacitance value, and other component parameters are not limiting conditions of the present invention. Designers can adjust these settings according to different needs. The mobile device of the present invention is not limited to the state illustrated in Figures 1-4. The present invention may only include any one or multiple features of any one or multiple embodiments of Figures 1-4. In other words, not all features shown in the figures need to be implemented in the mobile device of the present invention at the same time. Although the embodiment of the present invention uses a metal oxide semi-field effect transistor as an example, the present invention is not limited thereto. Those skilled in the art can use other types of transistors, such as junction field effect transistors or fins. type field effect transistor, etc., without affecting the effect of the present invention.

The ordinal numbers in this specification and the scope of the patent application, such as "first", "second", "third", etc., have no sequential relationship with each other. They are only used to distinguish two items with the same Different components with names.

Although the present invention is disclosed above in terms of preferred embodiments, they are not intended to limit the scope of the present invention. Anyone skilled in the art can make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

100,200:Mobile device 101,201:Input unit 105,205:Metal mechanical components 110,210:Power supply 120,220: Bridge rectifier 130,230:Transformer 131,231: Main coil 132,232: Secondary coil 133,233: Auxiliary coil 140,240:Power switcher 150,250: Output stage circuit 160,260: Feedback circuit 170,270: Pulse width modulation integrated circuit 180,280:Digital control integrated circuit 190,290: Discharge circuit 202:Touchpad module 203:Keyboard module 204:Fingerprint identification module 299:Earth C1: first capacitor C2: Second capacitor C3: The third capacitor C4: The fourth capacitor C5: fifth capacitor CP1: first connection point CP2: Second connection point CP3: Third connection point D1: first diode D2: Second diode D3: The third diode D4: The fourth diode D5: The fifth diode D6: The sixth diode IK: leakage current IK1: first leakage current IK2: Second leakage current LM: Magnetizing inductor M1: the first transistor M2: Second transistor M3: The third transistor M4: The fourth transistor N1: first node N2: second node N3: The third node N4: fourth node N5: fifth node N6: The sixth node N7: The seventh node N8: The eighth node N9: Ninth node N10: tenth node N11: The eleventh node NC: control node NCM: common node NIN1: first input node NIN2: second input node NOUT: output node NS: supply node R1: first resistor R2: second resistor R3: The third resistor R4: The fourth resistor R5: fifth resistor R6: The sixth resistor R7: seventh resistor TD: delay time VA: pulse width modulation potential VC: control potential VIN1: first input potential VIN2: second input potential VN: Notification potential VOUT: output potential VP: feedback supply potential VR: rectifier potential VSS: ground potential

Figure 1 is a schematic diagram showing a mobile device according to an embodiment of the present invention. Figure 2 is a schematic diagram showing a mobile device according to an embodiment of the present invention. Figure 3 shows a signal waveform diagram of a mobile device according to an embodiment of the present invention. Figure 4 is a physical configuration diagram of a mobile device according to an embodiment of the present invention.

100:Mobile device

101:Input unit

105:Metal mechanical components

110:Power supply

120: Bridge rectifier

130:Transformer

131: Main coil

132: Secondary coil

133: Auxiliary coil

140:Power switcher

150: Output stage circuit

160:Feedback circuit

170: Pulse width modulation integrated circuit

180:Digital control integrated circuit

190: Discharge circuit

IK: leakage current

LM: Magnetizing inductor

UI: user input

VA: pulse width modulation potential

VC: control potential

VIN1: first input potential

VIN2: second input potential

VN: Notification potential

VOUT: output potential

VP: feedback supply potential

VR: rectifier potential

VSS: ground potential

Claims (10)

A mobile device including: An input unit detects a user input, wherein if the user input meets a specific condition, the input unit will generate a notification potential; a metal structural component; and A power supply including: A bridge rectifier generates a rectified potential based on a first input potential and a second input potential; A transformer includes a main coil, a secondary coil, and an auxiliary coil, wherein the transformer has a built-in exciting inductor, and the main coil is used to receive the rectified potential; a power switch that selectively couples the main coil to a ground potential based on a pulse width modulated potential; An output stage circuit is coupled to the secondary coil and generates an output potential; a feedback circuit coupled to the auxiliary coil and generating a feedback supply potential; A pulse width modulation integrated circuit is powered by the feedback supply potential and generates the pulse width modulation potential; a digital control integrated circuit powered by the output potential and coupled to the input unit; and A discharge circuit, wherein if the digital control integrated circuit receives the notification potential, the digital control integrated circuit will generate a control potential, so that the discharge circuit outputs a leakage current to the metal mechanical component. The mobile device of claim 1, wherein the input unit includes a touch panel module, a keyboard module, and a fingerprint recognition module, and the metal mechanism component is a keyboard frame. The mobile device of claim 1, wherein the bridge rectifier includes: a first diode having an anode and a cathode, wherein the anode of the first diode is coupled to a first input node to receive the first input potential, and the first diode The cathode is coupled to a first node to output the rectified potential; a second diode having an anode and a cathode, wherein the anode of the second diode is coupled to a second input node to receive the second input potential, and the The cathode is coupled to the first node; a third diode having an anode and a cathode, wherein the anode of the third diode is coupled to the ground potential, and the cathode of the third diode is coupled to the first input node; and a fourth diode having an anode and a cathode, wherein the anode of the fourth diode is coupled to the ground potential, and the cathode of the fourth diode is coupled to the second input node. The mobile device of claim 3, wherein the main coil has a first end and a second end, the first end of the main coil is coupled to the first node to receive the rectified potential, and the main coil has a first end and a second end. The second end is coupled to a second node, the exciting inductor has a first end and a second end, the first end of the exciting inductor is coupled to the first node, and the exciting inductor has a first end and a second end. The second end is coupled to the second node, the secondary coil has a first end and a second end, the first end of the secondary coil is coupled to a third node, and the third end of the secondary coil Two ends are coupled to a fourth node, the auxiliary coil has a first end and a second end, the first end of the auxiliary coil is coupled to a fifth node, and the second end of the auxiliary coil The terminals are coupled to this ground potential. The mobile device of claim 4, wherein the power switch includes: A first transistor has a control terminal, a first terminal, and a second terminal, wherein the control terminal of the first transistor is used to receive the pulse width modulation potential, the first transistor The first terminal is coupled to the ground potential, and the second terminal of the first transistor is coupled to the second node. The mobile device of claim 4, wherein the output stage circuit includes: a fifth diode having an anode and a cathode, wherein the anode of the fifth diode is coupled to the third node, and the cathode of the fifth diode is coupled to an output node to output the output potential; A first resistor having a first terminal and a second terminal, wherein the first terminal of the first resistor is coupled to the fourth node, and the second terminal of the first resistor is coupled to connected to a common node; and a first capacitor having a first terminal and a second terminal, wherein the first terminal of the first capacitor is coupled to the output node, and the second terminal of the first capacitor is coupled to the common node. For example, the mobile device of claim 6, wherein the feedback circuit includes: a sixth diode having an anode and a cathode, wherein the anode of the sixth diode is coupled to the fifth node, and the cathode of the sixth diode is coupled to a supply node to output the feedback supply potential to the pulse width modulation integrated circuit; and a second capacitor having a first terminal and a second terminal, wherein the first terminal of the second capacitor is coupled to the supply node, and the second terminal of the second capacitor is coupled to the ground Potential. The mobile device of claim 6, wherein the discharge circuit includes: a third capacitor having a first terminal and a second terminal, wherein the first terminal of the third capacitor is coupled to the first input node, and the second terminal of the third capacitor is coupled to a sixth node; a fourth capacitor having a first terminal and a second terminal, wherein the first terminal of the fourth capacitor is coupled to the second input node, and the second terminal of the fourth capacitor is coupled to The sixth node; a second resistor having a first terminal and a second terminal, wherein the first terminal of the second resistor is coupled to the sixth node, and the second terminal of the second resistor is coupled to connected to the earth; and a fifth capacitor having a first terminal and a second terminal, wherein the first terminal of the fifth capacitor is coupled to the fourth node, and the second terminal of the fifth capacitor is coupled to the ground potential. For example, the mobile device of claim 8, wherein the discharge circuit further includes: a third resistor having a first end and a second end, wherein the first end of the third resistor is coupled to a control node to selectively receive the control from the digital control integrated circuit potential, and the second end of the third resistor is coupled to a seventh node; a fourth resistor having a first terminal and a second terminal, wherein the first terminal of the fourth resistor is coupled to the control node, and the second terminal of the fourth resistor is coupled to to an eighth node; a fifth resistor having a first terminal and a second terminal, wherein the first terminal of the fifth resistor is coupled to the control node, and the second terminal of the fifth resistor is coupled to to a ninth node; A second transistor has a control terminal, a first terminal, and a second terminal, wherein the control terminal of the second transistor is coupled to the seventh node, and the first terminal of the second transistor The terminal is coupled to a tenth node, and the second terminal of the second transistor is coupled to the sixth node; A third transistor has a control terminal, a first terminal, and a second terminal, wherein the control terminal of the third transistor is coupled to the eighth node, and the first terminal of the third transistor A terminal is coupled to the tenth node, and the second terminal of the third transistor is coupled to the sixth node; and A fourth transistor has a control terminal, a first terminal, and a second terminal, wherein the control terminal of the fourth transistor is coupled to the ninth node, and the first terminal of the fourth transistor The terminal is coupled to an eleventh node, and the second terminal of the fourth transistor is coupled to the fourth node. For example, the mobile device of claim 9, wherein the discharge circuit further includes: a sixth resistor having a first terminal and a second terminal, wherein the first terminal of the sixth resistor is coupled to the tenth node, and the second terminal of the sixth resistor is coupled to to a first connection point on the metal structural component; and A seventh resistor having a first terminal and a second terminal, wherein the first terminal of the seventh resistor is coupled to the eleventh node, and the second terminal of the seventh resistor is coupled to a second connection point on the metal mechanical component; wherein the common node is coupled to a third connection point on the metal mechanism component; The first connection point and the second connection point are used to selectively receive the leakage current from the discharge circuit.

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