KR101043380B1 - ESD charging circuit, RFID device including the same, and mobile system including the same - Google Patents

Abstract

The present invention relates to an electrostatic discharge (ESD) charge charging circuit, an RFID device and a mobile system including the same. Disclosed is a technique to be used. The present invention provides an electrostatic discharge (ESD) element unit for transferring an electrostatic discharge (ESD) charge introduced through an electrostatic discharge (ESD) charge input terminal to a power supply terminal, and a voltage value of an electrostatic discharge (ESD) charge supplied to a power supply terminal. A voltage limiting unit for limiting the voltage, a charging capacity unit for charging an electrostatic discharge (ESD) charge applied from a power supply terminal, and a charging control unit for supplying a voltage charged in the charging capacity unit to the battery and controlling a charging operation of the battery. Include.

Description

Electrostatic discharge (ESD) charge charging circuit, RDF device and mobile system including the same {ESD charging circuit, RFID device including the same, and mobile system including the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electrostatic discharge (ESD) charge charging circuit, an RFID device and a mobile system including the same. It is a technology related to an authorized mobile system.

RFID (Radio Frequency IDentification Tag Chip) is a contactless automatic identification method that communicates with an RFID reader by attaching an RFID tag to an object to be identified and automatically transmitting and receiving it by using a wireless signal. To provide technology. As RFID is used, it is possible to compensate for the disadvantages of the conventional automatic identification technology, barcode and optical character recognition technology.

Recently, RFID tags have been used in various cases, such as logistics management systems, user authentication systems, electronic money systems, transportation systems.

For example, in the logistics management system, cargo classification or inventory management is performed using an integrated circuit (IC) tag in which data is recorded instead of a delivery slip or a tag. In the user authentication system, admission management and the like are performed using an IC card that records personal information and the like.

Meanwhile, a nonvolatile ferroelectric memory may be used as a memory used for an RFID tag.

In general, nonvolatile ferroelectric memory, or ferroelectric random access memory (FeRAM), has a data processing speed of about dynamic random access memory (DRAM) and is attracting attention as a next-generation memory device because of its characteristic that data is preserved even when the power is turned off. have.

The FeRAM is a device having a structure almost similar to that of a DRAM, and uses a ferroelectric capacitor as a memory device. Ferroelectrics have a high residual polarization characteristic, and as a result, the data is not erased even when the electric field is removed.

1 is an overall configuration diagram of a general RFID device.

The RFID device according to the related art includes an antenna unit 1, an analog unit 10, a digital unit 20, and a memory unit 30.

Here, the antenna unit 1 serves to receive a radio signal transmitted from an external RFID reader. The wireless signal received through the antenna unit 1 is input to the analog unit 10 through the antenna pads 11 and 12.

The analog unit 10 amplifies the input wireless signal to generate a power supply voltage VDD which is a driving voltage of the RFID tag. Then, the operation command signal is detected from the input wireless signal and the command signal CMD is output to the digital unit 20. In addition, the analog unit 10 senses the output voltage VDD and outputs a power-on reset signal POR and a clock CLK to the digital unit 20 for controlling the reset operation.

The digital unit 20 receives the power supply voltage VDD, the power-on reset signal POR, the clock CLK, and the command signal CMD from the analog unit 10, and outputs a response signal RP to the analog unit 10. The digital unit 20 also outputs the address ADD, input / output data I / O, control signal CTR, and clock CLK to the memory unit 30.

In addition, the memory unit 30 reads / writes data using a memory element and stores the data.

Here, the RFID device uses a frequency of several bands, the characteristics of which vary depending on the frequency band. In general, the lower the frequency band, the slower the recognition speed, the RFID device operates in a short distance, and is less affected by the environment. On the contrary, the higher the frequency band, the faster the recognition speed and the longer the distance is affected by the environment.

A conventional RFID device having such a configuration receives a radio signal through an antenna. Accordingly, electrostatic discharge (ESD) charges may flow into the RFID device through the antenna pads 11 and 12.

The present invention has been made to solve the above problems, and has the following object.

First, an object of the present invention is to provide a charging circuit using an electrostatic discharge (ESD) charge as a charging power source of a battery without supplying power in a circuit using a battery.

Secondly, an object of the present invention is to provide an RFID device using an electrostatic discharge (ESD) charge introduced during a device operation operation without supplying power in a battery using an RFID device as a battery charging power source.

Third, an object of the present invention is to provide a mobile system using an electrostatic discharge (ESD) charge, which is introduced during an operation of a device without supplying power in a mobile application system using a battery, as a battery charging power source.

An electrostatic discharge charge charging circuit of the present invention for achieving the above object, the electrostatic discharge (ESD) element unit for transferring the electrostatic discharge (ESD) charge introduced through the electrostatic discharge (ESD) charge input terminal to the power supply terminal; A voltage limiting unit for limiting a voltage value of the electrostatic discharge (ESD) charge supplied to the power supply terminal; A charge capacity unit for charging an electrostatic discharge (ESD) charge applied from a power supply terminal; And a charging control unit which supplies a voltage charged in the charging capacity unit to the battery and controls the charging operation of the battery.

In addition, an RFID device including an electrostatic discharge charge charging circuit may be configured to charge an electrostatic discharge (ESD) charge flowing from an antenna in an RFID device in which data read / write operation is performed according to a radio frequency signal applied from an antenna. It includes an electrostatic discharge (ESD) charge charging circuit for supplying a battery provided in the RFID device.

In addition, a mobile system including an electrostatic discharge charge charging circuit may be configured to charge an electrostatic discharge (ESD) charge flowing from an input pad in a mobile system in which an operation signal from a user is applied through an input pad to perform an application operation. And an electrostatic discharge (ESD) charge charging circuit for supplying a battery included in the mobile system.

The present invention uses an electrostatic discharge (ESD) charge introduced during the operation of the device in the absence of a power supply as a battery charging power, so that a separate charging power is unnecessary, it is easy to charge, and the use of the battery for a long time is easy. Provide the effect of enabling it.

In addition, the preferred embodiment of the present invention is for the purpose of illustration, those skilled in the art will be able to various modifications, changes, replacements and additions through the spirit and scope of the appended claims, such configuration changes, etc. It should be seen as belonging to a range.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an overall configuration diagram of a radio frequency identification (RFID) device according to the present invention.

The RFID device of the present invention largely includes an analog unit 100, a digital unit 200, and a memory unit 300.

Here, the analog unit 100 includes an electrostatic discharge (ESD) charge charging circuit 110, a voltage amplifier 120, a modulator 130, a demodulator 140, And a power on reset unit 150 and a clock generator 160.

And, the antenna ANT of the analog unit 100 is a configuration for transmitting and receiving data between the external reader or writer and RFID. Antenna ANT is connected through RFID tag and antenna pad PAD (+), PAD (-).

The electrostatic discharge charge charging circuit 110 uses electrostatic discharge (ESD) charges flowing from pads PAD (+) and PAD (-) of the antenna ANT as a charging power source of a battery used for RFID without supplying power. It is a structure for doing so.

The voltage amplifier 120 generates a power supply voltage VDD which is a driving voltage of the RFID by the radio frequency signal RF applied from the antenna ANT.

In addition, the modulator 130 modulates the response signal RP applied from the digital unit 200 and transmits the modulated response signal RP to the antenna ANT. The demodulator 140 detects an operation command signal from a radio frequency signal RF applied from the antenna ANT according to the output voltage of the voltage amplifier 120 and outputs the command signal CMD to the digital unit 200.

The power on reset unit 150 detects the output voltage VDD of the voltage amplifying unit 120 and outputs a power on reset signal POR for controlling the reset operation to the digital unit 200. The clock generator 160 supplies the clock CLK for controlling the operation of the digital unit 200 to the digital unit 200 according to the output voltage VDD of the voltage amplifier 120.

In addition, the above-described digital unit 200 receives a power supply voltage VDD, a power-on reset signal POR, a clock CLK, and a command signal CMD from the analog unit 100 to interpret the command signal CMD, generate control signals, and process signals to generate analog signals. The response signal RP corresponding to the unit 200 is output. The digital unit 200 outputs an address ADD, input / output data I / O, and a control signal CTR to the memory unit 300.

In addition, the memory unit 300 includes a plurality of memory cells, each of which serves to write data to the storage device and to read data stored in the storage device.

Here, the memory unit 300 may be a nonvolatile ferroelectric memory (FeRAM). FeRAM has a data processing speed of about DRAM. In addition, FeRAM has a structure almost similar to DRAM, and has a high residual polarization characteristic of the ferroelectric by using a ferroelectric as the material of the capacitor. Due to this residual polarization characteristic, data is not erased even when the electric field is removed.

FIG. 3 is a detailed circuit diagram of the electrostatic discharge (ESD) charge charging circuit 110 of FIG. 2.

The electrostatic discharge (ESD) charge charging circuit 110 includes an electrostatic discharge (ESD) charge input terminal 111 and 112, an electrostatic discharge (ESD) element unit 113, a voltage limiting unit 114, and a charge capacitor unit 115. And a charging control unit 116, a battery 117, and battery output terminals 118 and 119.

Here, the electrostatic discharge (ESD) charge input terminals 111 and 112 receive an electrostatic discharge (ESD) charge applied from the antenna ANT of the RFID device.

The electrostatic discharge (ESD) device unit 113 includes diode devices D1 and D2. Here, the diode element D1 is connected in the forward direction between the electrostatic discharge (ESD) charge input terminal 111 and the power supply terminal (A). The diode element D2 is forwardly connected between the electrostatic discharge (ESD) charge input terminal 112 and the electrostatic discharge (ESD) charge input terminal 111.

In addition, the voltage limiting unit 114 includes a diode element. Here, it is preferable that the diode element is a Zener diode element ZD1. Zener diode element ZD1 is connected in a forward direction between ground terminal B and power supply terminal A. FIG.

The charge capacitor unit 115 includes the capacitor element C1. In the present invention, the case in which the capacitor element C1 of the charge capacitor unit 115 is a dielectric capacitor element has been described as an embodiment, but the present invention is not limited thereto and may be made of a ferroelectric capacitor element or another capacitor element having a charge capacity. have.

In addition, the charging control unit 116 is connected to the power supply terminal A to control the charging power supplied to the battery 117. The battery 117 is connected between the power source and the ground terminal B to supply power to the inside of the RFID device through the battery output terminals 118 and 119.

Referring to the operation of the electrostatic discharge (ESD) charge charging circuit 110 having such a configuration as follows.

First, the electrostatic discharge (ESD) charge applied from the antenna ANT through the electrostatic discharge (ESD) charge input terminals 111 and 112 is transferred to the electrostatic discharge (ESD) device unit 113. Then, the electrostatic discharge (ESD) element unit 113 supplies the electrostatic discharge (ESD) charges introduced through the electrostatic discharge (ESD) charge input terminals 111 and 112 to the charging capacitor unit 115 or to the ground (GND) voltage terminal. Discharge.

That is, the diode element D1 supplies the charges flowing from the electrostatic discharge (ESD) charge input terminal 111 to the charging capacitor unit 115 through the power supply terminal A. At this time, the charge supplied to the charge capacity unit 115 corresponds to a (+) voltage.

If a negative voltage is applied through the electrostatic discharge (ESD) charge input terminal 111, it is discharged through the transfer path of the ground (GND) voltage terminal, the diode element D2, and the electrostatic discharge (ESD) charge input terminal 111. . The diode element D2 serves to prevent a positive voltage applied through the electrostatic discharge (ESD) charge input terminal 111 from flowing to the ground terminal B. FIG.

In addition, the voltage limiting unit 114 restricts the high voltage to flow through the power supply terminal A, thereby limiting the upper limit voltage of the charging capacitor unit 115.

That is, the voltage limiter 114 transmits the voltage to the charge capacitor 115 and the charge controller 116 when a voltage below a predetermined voltage is applied from the electrostatic discharge (ESD) device unit 113. On the other hand, the voltage limiting unit 114 is discharged to the ground terminal (B) through the zener diode ZD1 when a voltage of a predetermined voltage or more is applied from the electrostatic discharge (ESD) element unit 113.

The charging capacitor unit 115 charges the capacitor element C1 with the electric charges applied from the electrostatic discharge (ESD) element unit 113 and the voltage limiting unit 114.

In addition, the charging control unit 116 controls the overall charging operation of the battery 117. That is, the charging control unit 116 adjusts the amount of current applied to the battery 117 to prevent the battery from being heated. In addition, the charging control unit 116 prevents the charging voltage applied to the battery 117 from flowing back to another place, and adjusts the rate at which the battery 117 is charged with voltage.

Accordingly, the charge stored in the charge capacitor 115 is stored in the battery 117 under the control of the charge controller 116. The voltage charged in the battery 117 is supplied to the inside of the RFID device through the battery output terminals 118 and 119.

On the other hand, Figure 4 is a block diagram of a mobile system according to the present invention.

The mobile system 400 of the present invention includes a display unit 401, a pad array unit 410, and an electrostatic discharge (ESD) charge charging circuit 420.

Here, the display unit 401 displays the response signal according to the user's device operation in the mobile application system so that the user can recognize it.

In addition, the pad array unit 410 includes a plurality of pads P1 to P12 to transmit an input signal desired by a user to an internal control circuit of the application system. When a user inputs a desired input signal by manipulating a plurality of pads P1 to P12, the internal control circuit of the application system controls the same and outputs a response signal corresponding to the result to the display unit 401.

In addition, the electrostatic discharge charge charging circuit 420 is configured to use electrostatic discharge (ESD) charge flowing from the pad array unit 410 without supplying power as a charging power source for a battery used in an application system. .

FIG. 5 is a detailed circuit diagram of an electrostatic discharge (ESD) charge charging circuit 420 of FIG. 4.

The electrostatic discharge (ESD) charge charging circuit 420 includes an electrostatic discharge (ESD) element unit 421, a voltage limiting unit 422, a charging capacitor unit 423, a charging control unit 424, and a battery 425. ) And battery output stages (426, 427).

Here, the electrostatic discharge (ESD) element unit 421 includes a plurality of diode elements D3 to D6. The diode element D3 is connected in a forward direction between the connection terminal of the pad P1 and the power supply terminal A. FIG. The diode element D4 is connected in the forward direction between the ground terminal B and the connection terminal of the pad P1.

The diode element D5 is connected in a forward direction between the connection terminal of the pad P12 and the power supply terminal A. FIG. The diode element D6 is connected in the forward direction between the ground terminal B and the connection terminal of the pad P12.

In the embodiment of FIG. 5, only the electrostatic discharge (ESD) device unit 421 connected to the pads P1 and P12 is illustrated. However, the present invention is not limited thereto, and the number of pads included in the pad array unit 410 is not limited thereto. Preferably, the electrostatic discharge (ESD) device unit 421 is provided.

In addition, the voltage limiting unit 422 includes a diode element. Here, it is preferable that the diode element is a Zener diode element ZD2. Zener diode element ZD2 is connected in a forward direction between ground terminal B and power supply terminal A. FIG.

The charging capacitor 423 includes a capacitor element C2. In the present invention, the case in which the capacitor element C2 of the charge capacitor 423 is a dielectric capacitor element has been described as an embodiment. However, the present invention is not limited thereto and is made of a ferroelectric capacitor element or another capacitor element having a charge capacity. It may be.

In addition, the charging control unit 424 is connected to the power supply terminal A to control the charging power supplied to the battery 425. The battery 425 is connected between the power source and the ground terminal B to supply power to the inside of the mobile system through the battery output terminals 426 and 427.

Referring to the operation of the electrostatic discharge (ESD) charge charging circuit 420 having such a configuration as follows.

First, an electrostatic discharge (ESD) charge applied from a user's device operation through the pads P1 to P12 is transferred to the electrostatic discharge (ESD) element unit 421. Then, the electrostatic discharge (ESD) device unit 421 supplies the electrostatic discharge (ESD) charges introduced through the pads P1 to P12 to the charge capacitor unit 423 or discharges to the ground (GND) voltage terminal.

That is, the diode elements D3 and D5 supply the charges introduced from the pads P1 to P12 to the charging capacitor 423 through the power supply terminal A. FIG. At this time, the charge supplied to the charging capacitor 423 corresponds to a positive voltage.

If a negative voltage is applied through the pads P1 to P12, the terminal discharges through the transfer paths of the ground (GND) voltage terminal, the diode element D4 (or the diode element D6), and the pads P1 to P12. In addition, the diode elements D4 and D6 play a role of preventing the positive voltage applied through the pads P1 to P12 from flowing to the ground terminal B. FIG.

In addition, the voltage limiting unit 422 restricts the voltage of the power supply terminal A from being too high, thereby limiting the upper limit voltage of the charging capacitor 423.

That is, the voltage limiting unit 422 transfers the voltage to the charging capacitor 423 and the charging controller 424 when a voltage below a predetermined voltage is applied from the electrostatic discharge (ESD) device unit 421. On the other hand, the voltage limiting unit 422 discharges the ground terminal B through the zener diode ZD2 when a voltage equal to or higher than a predetermined voltage is applied from the electrostatic discharge (ESD) element unit 421.

The charge capacitor 423 charges the capacitor element C2 with the electric charges applied from the electrostatic discharge (ESD) element unit 421 and the voltage limiting unit 422.

In addition, the charging control unit 424 controls the overall charging operation of the battery 425. That is, the charging control unit 424 adjusts the amount of current applied to the battery 425 to prevent the battery from being heated. In addition, the charging control unit 424 prevents the charging voltage applied to the battery 425 from flowing back to another place, and adjusts the rate at which the voltage is charged to the battery 425.

Accordingly, the charge stored in the charge capacitor 423 is stored in the battery 425 under the control of the charge controller 424. The voltage charged in the battery 425 is supplied to the internal circuit of the mobile system through the battery output terminals 426 and 427.

In general, an RFID device using a battery or a mobile application device requires a separate circuit configuration for charging a battery. However, the present invention does not include a separate power supply circuit for charging a battery, and uses an electrostatic discharge (ESD) charge applied from an antenna of an RFID device as charging power of the battery, or an electrostatic discharge applied from an input pad of a mobile system. (ESD) charge is used as a charging source for the battery.

That is, in the case of the RFID device, the size of each tag is small, but the size of the battery is relatively large. In addition, the RFID device transmits and receives a wireless signal with an external reader or lighter, and an antenna is required for this purpose.

However, when an RFID device transmits / receives a wireless signal to or from an external reader or lighter, static electricity is generated by electrostatic discharge (ESD) charge. In addition, when the user touches the antenna attached to the RFID device, static electricity is generated by the electrostatic discharge (ESD) charge.

In the case of a mobile system, a general cellular phone device may be described as an example. Such an application system receives a command signal by a keypad operation of a user in order to perform an operation desired by a user.

However, in the case of a mobile system, when a user performs a device operation through the pad array 410, an electrostatic discharge (ESD) charge is introduced through the pad array 610. In addition, when operating the mobile system outdoors, relatively high electrostatic discharge (ESD) charges may be introduced into the mobile system due to natural disasters such as thunder and lightning.

The electrostatic discharge (ESD) charge affects the RFID device or the mobile system. In the present invention, the electrostatic discharge (ESD) charge is introduced to be used as a charging power source of the battery.

1 is a block diagram of a conventional RFID device.

2 is a block diagram of an RFID device according to a first embodiment of the present invention.

3 is a detailed circuit diagram of the ESD charge charging circuit of FIG.

4 is a block diagram of a mobile system according to a second embodiment of the present invention;

FIG. 5 is a detailed circuit diagram of the ESD charge charging circuit of FIG. 4. FIG.

Claims (31)

An electrostatic discharge (ESD) device unit configured to transfer an electrostatic discharge (ESD) charge introduced through an electrostatic discharge (ESD) charge input terminal to a power supply terminal; A voltage limiter configured to limit a voltage value of the electrostatic discharge (ESD) charge supplied to the power terminal; A charge capacitor unit for charging the electrostatic discharge (ESD) charge applied from the power supply terminal; And And a charging control unit for supplying a voltage charged in the charging capacity unit to the battery and controlling a charging operation of the battery. Claim 2 has been abandoned due to the setting registration fee. The electrostatic discharge (ESD) charge charging circuit according to claim 1, wherein the positive charge applied to the electrostatic discharge (ESD) element portion is supplied to the power supply terminal, and the negative charge is discharged. Claim 3 was abandoned when the setup registration fee was paid. The electrostatic discharge (ESD) charge charging circuit according to claim 1, wherein the electrostatic discharge (ESD) element portion includes a first diode element connected in a forward direction between the electrostatic discharge (ESD) charge input terminal and the power supply terminal. . Claim 4 was abandoned when the registration fee was paid. 4. The electrostatic discharge (ESD) charge charging circuit according to claim 3, wherein the electrostatic discharge (ESD) element portion further comprises a second diode element connected in a forward direction between a ground terminal and the electrostatic discharge (ESD) charge input terminal. Claim 5 was abandoned upon payment of a set-up fee. The electrostatic discharge (ESD) charge charging circuit according to claim 1, wherein the voltage limiting unit limits an upper limit value of the electrostatic discharge (ESD) charge supplied to the charging capacitor. Claim 6 was abandoned when the registration fee was paid. 6. The electrostatic discharge (ESD) charge charging circuit as claimed in claim 1 or 5, wherein the voltage limiting unit includes a Zener diode element connected in a forward direction between the ground terminal and the power supply terminal. Claim 7 was abandoned upon payment of a set-up fee. 2. An electrostatic discharge (ESD) charge charging circuit according to claim 1, wherein the charge capacitor comprises a capacitor element. Claim 8 was abandoned when the registration fee was paid. 8. The electrostatic discharge (ESD) charge charging circuit according to claim 7, wherein the capacitor element is made of any one of a dielectric and a ferroelectric. Claim 9 was abandoned upon payment of a set-up fee. The electrostatic discharge (ESD) charge charging circuit of claim 7, wherein the charging control unit adjusts an amount of current supplied to the battery. An RFID device in which a read / write operation of data is performed according to a radio frequency signal applied from an antenna, RFID device including an electrostatic discharge (ESD) charge charging circuit for charging the electrostatic discharge (ESD) charge flowing from the antenna and to supply to the battery provided in the RFID device. Claim 11 was abandoned upon payment of a setup registration fee. The method of claim 10, wherein the RFID device is An analog unit for generating a command signal according to the radio frequency signal and transmitting a response signal to the antenna; A digital unit outputting an internal control signal and data according to the command signal and outputting the response signal to the analog unit; And And a memory in which the read / write operation of the data is performed according to the internal control signal. Claim 12 was abandoned upon payment of a registration fee. The RFID device according to claim 11, wherein the electrostatic discharge (ESD) charge charging circuit is included in the analog unit. Claim 13 was abandoned upon payment of a registration fee. The method of claim 10, wherein the electrostatic discharge (ESD) charge charging circuit is An ESD device unit transferring an electrostatic discharge (ESD) charge introduced through the antenna to a power supply terminal; A voltage limiting unit limiting a voltage value of the ESD charge supplied to the power supply terminal; A charge capacitor unit for charging the ESD charge applied from the power supply terminal; And And a charging control unit for supplying a voltage charged in the charging capacity unit to the battery and controlling a charging operation of the battery. Claim 14 was abandoned when the registration fee was paid. The RFID device according to claim 13, wherein the positive charge applied to the ESD element portion is supplied to the power supply terminal, and the negative charge is discharged. Claim 15 was abandoned upon payment of a registration fee. The RFID device of claim 13, wherein the ESD device unit comprises a first diode device connected forward between the input terminal of the ESD charge and the power supply terminal. Claim 16 was abandoned upon payment of a setup registration fee. The RFID device of claim 15, wherein the ESD device unit further comprises a second diode device connected forwardly between a ground terminal and an input terminal of the ESD charge. Claim 17 has been abandoned due to the setting registration fee. The RFID device of claim 13, wherein the voltage limiter limits an upper limit of the ESD charge supplied to the charge capacitor. Claim 18 was abandoned upon payment of a set-up fee. 18. The RFID device according to claim 13 or 17, wherein the voltage limiting unit comprises a Zener diode element connected in a forward direction between a ground terminal and the power terminal. Claim 19 was abandoned upon payment of a registration fee. The RFID device according to claim 13, wherein the charging capacitor comprises a capacitor element. Claim 20 was abandoned upon payment of a registration fee. Claim 21 has been abandoned due to the setting registration fee. The RFID device of claim 13, wherein the charging controller adjusts an amount of current supplied to the battery. In the mobile system that the operation signal is applied from the user through the input pad to perform the application operation, And an ESD charge charging circuit for charging the ESD charge flowing from the input pad and supplying the ESD charge to the battery included in the mobile system. Claim 23 was abandoned upon payment of a set-up fee. 23. The method of claim 22, wherein the ESD charge charging circuit is An ESD element unit for transferring the ESD charge introduced through the input pad to a power supply terminal; A voltage limiting unit limiting a voltage value of the ESD charge supplied to the power supply terminal; A charge capacitor unit for charging the ESD charge applied from the power supply terminal; And And a charging control unit for supplying a voltage charged in the charging capacity unit to a battery and controlling a charging operation of the battery. Claim 24 is abandoned in setting registration fee. 24. The mobile system of claim 23, wherein the positive charge applied to said ESD element portion is supplied to said power stage and the negative charge is discharged. Claim 25 is abandoned in setting registration fee. The mobile system of claim 23, wherein the ESD device unit includes a first diode device connected forward between the input terminal of the ESD charge and the power supply terminal. Claim 26 is abandoned in setting registration fee. 26. The mobile system of claim 25, wherein the ESD device portion further comprises a second diode device connected forward between the ground terminal and the input terminal of the ESD charge. Claim 27 was abandoned upon payment of a registration fee. 24. The mobile system of claim 23, wherein the voltage limiter limits an upper limit of the ESD charge supplied to the charging capacitor. Claim 28 has been abandoned due to the set registration fee. 28. The mobile system of claim 23 or 27, wherein the voltage limiter comprises a Zener diode element connected forward between the ground terminal and the power terminal. Claim 29 has been abandoned due to the setting registration fee. The mobile system of claim 23, wherein the charging capacitor comprises a capacitor element. Claim 30 has been abandoned due to the set registration fee. 30. The mobile system of claim 29, wherein the capacitor element is made of any one of a dielectric and a ferroelectric. Claim 31 has been abandoned due to the setting registration fee. The mobile system of claim 23, wherein the charging controller adjusts an amount of current supplied to the battery.

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