TWM635417U - High voltage switch integrated circuit - Google Patents

Abstract

The present invention provides a high voltage switch integrated circuit, comprising an energy storage circuit, a control circuit, a switch circuit and a signal common terminal. The energy storage circuit is connected to the control circuit, and the control circuit is connected to the energy storage circuit. The signal common terminal is connected to the energy storage circuit, the control circuit and the switch circuit, respectively. The energy storage circuit receives an optical signal, converts the optical signal into a switch control power signal and stores the switch control power signal. The control circuit receives outputs a control signal according to the optical signal, and outputs the switch control power signal according to the control signal. The switch circuit decides whether switching to on or off according to the switch control power signal. Thereby, it can be reducing a charging time to achieve the purpose of fast control to the switch circuit.

Description

High Voltage Switching ICs

The present invention relates to an integrated switch circuit, especially a high-voltage switch integrated circuit.

A high-voltage switch integrated circuit in the prior art mainly includes a switch circuit, a control circuit and a switch circuit, the switch circuit provides a switch control power supply signal to the control circuit, so that the control circuit can control the power supply signal according to the switch to generate a control signal, and then transmit the control signal to the switch circuit to control the switch circuit to output a high voltage signal.

However, in the above-mentioned prior art, the switch control power signal received by the control circuit must reach a threshold before the control circuit can generate the control signal, and if the switch control power signal reaches the threshold, it must Waiting for a charging time, in this way, if the control circuit controls the switch circuit to output the high voltage signal, it will take a lot of time, and the overall control rate is not good.

Therefore, the prior art really needs to further provide the necessity of a more improved solution.

In view of the deficiencies of the prior art above, the main purpose of the present invention is to provide a high-voltage switching integrated circuit, by setting an energy circuit, the charging time can be greatly reduced, so as to achieve the purpose of fast control.

The main technical means adopted to achieve the above objectives are the aforementioned high-voltage switch integrated circuits, including: An energy circuit that receives an optical signal, converts the optical signal into a switch control power signal, and stores the switch control power signal; A control circuit, which is connected to the energy circuit, and receives a second light signal, and controls the output of the switch to control the power supply signal according to the second light signal; A switch circuit, which is connected to the control circuit and receives the switch control power signal from the control circuit, and decides whether to turn on or off according to the switch control power signal; and A signal common point, which is connected with the energy circuit, the control circuit and the switch circuit.

Through the above structure, by setting the energy circuit, electric energy can be stored in the energy circuit in advance, and the charging time is shortened, so as to achieve the purpose of quickly controlling the switching circuit.

The following describes the implementation of the present invention through specific specific examples, and those skilled in the art can understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied by other different specific embodiments, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

Regarding the embodiment of the high-voltage switching integrated circuit of the present invention, as shown in Figure 1, it includes an energy circuit 10, a control circuit 11, a switch circuit 12 and a signal common point GND, the energy circuit 10 and the control circuit 11 is electrically connected, and then, the control circuit 11 is electrically connected with the switch circuit 12, and the signal common point GND is electrically connected with the energy circuit 10, the control circuit 11 and the switch circuit 12 respectively, and the signal common point GND Provide a total access signal. The energy circuit 10 and the control circuit 11 respectively receive a light signal, the energy circuit 10 converts the light signal into a switch control power signal, and stores the switch control power signal, the control circuit 11 receives the light signal, and The optical signal is converted into a control signal to determine whether to output the switch control power signal to the switch circuit 12 according to the control signal, and then, when the control circuit 11 determines to output the switch control power signal to the switch circuit 12 according to the control signal , the switch circuit 12 receives the switch control power signal through the control circuit 11, and determines whether to turn on or off according to the switch control power signal. In this embodiment, the switch control power supply signal can be a voltage signal or a current signal, and the control circuit 11 can be a push-pull output (Push-pull output) circuit.

In this embodiment, as shown in FIG. 2 , the high voltage switch integrated circuit further includes a light signal transmitter 13 , and the light signal transmitter 13 sends the light signal to the energy circuit 10 and the control circuit 11 . In this embodiment, the light signal transmitter 13 can be a light emitting diode.

In this embodiment, as shown in FIG. 3 , the high-voltage switching integrated circuit further includes an optical signal converter 14, which is arranged opposite to the optical signal transmitter 13 to receive the optical signal transmitter 13 the light signal sent. After receiving the light signal, the light signal converter 14 converts the light signal into the switch control power signal or the control signal. In this embodiment, the optical signal converter 14 may be a photoelectric converter including a photodiode.

In this embodiment, please refer to FIG. 4 and FIG. 5 together, the optical signal transmitter 13 further includes a first optical signal transmitter 130 and a second optical signal transmitter 131, and the first optical signal transmitter The other end of 130 and the other end of the second optical signal transmitter are connected to each other, and the optical signal converter 14 further includes a first optical signal converter 140 and a second optical signal converter 141, the first optical signal The signal transmitter 130 is arranged opposite to the first optical signal converter 140, and the second optical signal transmitter 131 is arranged opposite to the second optical signal converter 141, and the first optical signal converter 140 is configured from the first optical signal converter The signal transmitter 130 receives a first optical signal, the second optical signal converter 141 receives the second optical signal from the second optical signal transmitter, and the energy circuit 10 further includes an energy storage device 100, the energy storage device 100 is electrically connected to the first optical signal converter 140 . When the first optical signal converter 140 receives the first optical signal from the first optical signal transmitter 130, converts the first optical signal into the switch control power signal, and transmits the switch control power signal to the The energy store 100 stores. The control circuit 11 further includes a diode 110 and a pair of control switches 111, 112, the diode 110 is electrically connected to the second optical signal converter 141, and the pair of control switches 111, 112 are respectively connected to the The second optical signal converter 141 is electrically connected, the pair of control switches 111, 112 are respectively connected to the energy storage device 100, the pair of control switches 111, 112 are connected in series to form a control switch common terminal 113, when the control circuit After receiving the second optical signal, the second optical signal converter 141 of 11 converts the second optical signal into the control signal, and transmits the control signal to the pair of control switches 111, 112, and the pair of control switches After receiving the control signal, 111 and 112 will be turned on or off respectively according to the control signal, so as to output the switch control power supply signal or the common connection signal through the control switch common terminal 113 . In this embodiment, the pair of control switches 111 and 112 are inversely controlled, that is, the control switch 111 is turned on, and the control switch 112 is turned off. The pair of control switches 111 and 112 can be a MOSFET Transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET), so the pair of control switches 111, 112 each include a control side and a signal transmission side, the second optical signal converter 141 is connected to the pair of control switches The control sides of 111 and 112 are electrically connected to receive the control signal to determine whether the pair of control switches 111 and 112 are turned on or off. One end is connected in series with one end of the control switch to form the control switch common terminal 113 , and the other end of the control switch 112 on the signal conducting side is electrically connected to the signal common point GND. In this embodiment, the first optical signal converter 140 is set in the energy circuit 10, and the second optical signal converter 141 is set in the control circuit 11, for example, the control switch 111 can be a P-channel MOSFET, the The control switch 112 can be an N-channel MOSFET, and the gate terminals (Gate, G) of the pair of control switches 111 and 112 are electrically connected to the second optical signal converter 141, and the source terminal (Source, S ) and the energy storage 100, the source end (Source, S) of the control switch 112 is electrically connected to the signal common point GND, and the drain ends (Drain, D) of the pair of control switches 111, 112 are connected in series to form the The common terminal 113 of the control switch.

Next, the switch circuit 12 includes a switch control terminal 120, a switch common terminal 121, a first signal terminal 122 and a second signal terminal 123, the switch control terminal 120 is connected to the control switch common terminal 113, the The switch common terminal 121 is connected to the signal common point GND, and then, when one of the pair of control switches 111 and 112 is turned on due to receiving the control signal, the energy storage device 100 passes the switch control power supply signal through the turn-on The control switch 111 or the control switch 112 outputs the switch control power signal to the control switch common terminal 113, and transmits the switch control power signal to the switch control terminal 120 to control the first signal terminal 122 and the Whether the second signal terminal 123 is on or off, in detail, when the control switch 111 is on and the control switch 112 is off, the switch control power supply signal is sent to the switch control through the control switch common terminal 113 Terminal 120, to control the conduction between the first signal terminal 122 and the second signal terminal 123, when the control switch 111 is turned off and the control switch 112 is turned on, the signal of the signal common point GND is sent to the switch The control terminal 120 is used to control the cut-off between the first signal terminal 122 and the second signal terminal 123 . In this embodiment, the switch circuit 12 may further include a first switch M ₁ and a second switch M ₂ , the first switch M ₁ and the second switch M ₂ respectively receive the switch control power signal and the signal The signal at the common point GND is turned on or off according to the switch control power supply signal and the signal at the common point GND of the signal, so that the first signal end 122 and the second signal end 123 are turned on or off, the The first switch M ₁ and the second switch M ₂ are the same control switches, which can be a metal-oxide-semiconductor field-effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET), for example, the first switch M ₁ And the second switch _M2 can be the same N-channel MOSFET, and the gate terminals (Gate, G) of the _first switch M1 and the second switch _M2 are respectively electrically connected to the switch control terminal 120, the The source terminals (Source, S) of the first switch M ₁ and the second switch M ₂ are electrically connected to each other and to the common terminal 121 of the switch, and the drain terminal (Drain, D) of the first switch M ₁ It is electrically connected to the first signal terminal 122 , and the drain terminal (Drain, D) of the second switch M ₂ is electrically connected to the second signal terminal 123 .

In this embodiment, as shown in FIG. 5 , the optical signal transmitter 13 further includes an optical signal modulator 132, the first optical signal transmitter 130 and the second optical signal transmitter 131 are respectively connected to the optical signal The modulator 132 is electrically connected, the optical signal modulator 132 is electrically connected to a _first power input terminal V1 and a _second power input terminal V2, and the optical signal modulator 132 responds to the first optical signal Modulation is performed to generate a modulation signal to the second optical signal transmitter 131, and the second optical signal transmitter 131 generates the second optical signal according to the modulation signal. In this embodiment, the optical signal modulator 132 adjusts the signal output period of the first optical signal to generate the modulation signal, and the second optical signal transmitter 131 generates the second optical signal according to the modulation signal. signal. In this embodiment, the first light signal can be a fixed light source, and the second light signal can be a square wave light source. When the second light signal converter 141 receives the light from the second light signal transmitter 131 After the second light signal, the second light signal will be decoded to confirm the control signal. Specifically, it can be decoded according to different intensities of the light signal, the duty ratio of the light signal, or the frequency of the light signal, so as to confirm a turn-on signal or a cut-off signal of the control signal.

To sum up, with the arrangement of the energy circuit 10 , electric energy can be stored in the energy circuit 10 first, so that the charging time can be shortened to achieve the purpose of quickly controlling the switching circuit 12 .

The above-mentioned embodiments are only illustrative examples of the present invention, and are not intended to limit the present invention. Anyone skilled in the art can modify and change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the rights of the present invention should be set forth in the scope of patent application described later.

10: energy circuit 100: energy storage device 11: control circuit 110: diode 111: control switch 112: control switch 113: control switch common terminal 12: switch circuit 120: switch control terminal 121: switch common terminal 122: First signal terminal 123: second signal terminal 13: optical signal transmitter 130: first optical signal transmitter 131: second optical signal transmitter 132: optical signal modulator 14: optical signal converter 140: first light Signal converter 141: second optical signal converter M ₁ : first switch M ₂ : second switch V ₁ : first power input terminal V ₂ : second power input terminal GND: signal common point

Fig. 1 is the block diagram of the embodiment of the present invention; Fig. 2 is another block diagram of the embodiment of the present invention; Fig. 3 is the block diagram of the optical signal transmitter and the optical signal converter of the present invention; Fig. 4 is the block diagram of the specific embodiment of the present invention; And Fig. 5 is a block diagram of the optical signal transmitter of the present invention.

10:Energy circuit

11: Control circuit

12: switch circuit

GND: Signal common point

Claims (9)

A high-voltage switching integrated circuit, which includes: an energy circuit that receives an optical signal, converts the optical signal into a switch control power signal, and stores the switch control power signal; A control circuit, which is connected to the energy circuit, and receives the light signal, and converts it into a control signal according to the light signal; A switch circuit, which is connected to the control circuit, receives the switch control power signal from the control circuit, and decides to turn on or off according to the switch control power signal; and A signal common point, which is connected with the energy circuit, the control circuit and the switch circuit. The high-voltage switch integrated circuit as described in claim 1, wherein the high-voltage switch integrated circuit further includes: An optical signal transmitter sends the optical signal. The high-voltage switch integrated circuit as described in claim 2, wherein the high-voltage switch integrated circuit further includes: An optical signal converter, which is arranged opposite to the optical signal transmitter, receives the optical signal, and converts the optical signal into the switch control power signal and the control signal. The high-voltage switch integrated circuit as described in claim 3, wherein the energy circuit includes: An energy storage device is connected with the optical signal converter and receives the switch control power signal to store the switch control power signal. The high-voltage switch integrated circuit as claimed in claim 3, wherein the control circuit includes: a diode connected to the optical signal converter; and A pair of control switches, which are connected with the optical signal converter, receive the control signal, and are turned on or off correspondingly according to the control signal. The high-voltage switch integrated circuit as described in Claim 5, wherein the optical signal transmitter further includes: a first optical signal transmitter, which is arranged opposite to the optical signal converter and sends a first optical signal; and A second optical signal transmitter is arranged opposite to the optical signal converter and sends a second optical signal. The high-voltage switch integrated circuit as described in Claim 5, wherein the optical signal converter further includes: A first optical signal converter, which is arranged opposite to the optical signal transmitter and receives the optical signal, and converts the optical signal into the switch control power supply signal; and A second optical signal converter, which is arranged opposite to the optical signal transmitter, receives the optical signal, and converts the optical signal into the control signal. The high-voltage switch integrated circuit according to any one of claim 6 or 7, wherein the switch circuit includes: a switch control terminal, which is connected to the control circuit and receives the switch control power supply signal; a switch common terminal connected to the signal common point; a first signal terminal; a second signal terminal; and Wherein, when the switch control terminal receives the switch control power supply signal, it will conduct the first signal terminal and the second signal terminal, and when the switch control terminal does not receive the switch control power supply signal, the second signal terminal will be turned on Cutoff is performed between the first signal end and the second signal end. The high-voltage switch integrated circuit as described in Claim 6, wherein the optical signal transmitter includes: an optical signal modulator, which is connected to the first optical signal transmitter and the second optical signal transmitter, and modulates the first optical signal to generate a modulated signal; and Wherein, the second optical signal transmitter generates the second optical signal according to the modulation signal.

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