CN203289401U - Level shift circuit of tablet personal computer - Google Patents
Level shift circuit of tablet personal computer Download PDFInfo
- Publication number
- CN203289401U CN203289401U CN2013203652597U CN201320365259U CN203289401U CN 203289401 U CN203289401 U CN 203289401U CN 2013203652597 U CN2013203652597 U CN 2013203652597U CN 201320365259 U CN201320365259 U CN 201320365259U CN 203289401 U CN203289401 U CN 203289401U
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- triode
- connecting end
- panel computer
- triodes
- level displacement
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Abstract
The utility model discloses a level shift circuit of a tablet personal computer, comprising triodes T1, T3, T5, T6, T4 and T2 which are connected in sequence to form a closed loop. Both connecting end emitting electrodes of the triodes T1 and T2 are connected with a power supply, base electrodes of the triodes T1 and T2 are connected with each other and are connected with an input port; the triode T3 is also connected with common connecting ends of the triodes T4 and T6; the triode T4 is also connected with common connecting ends of the triodes T3 and T5; both of common connecting ends of the triodes T5 and T6 are grounded, the triode T5 is also connected with a negative electrode of a diode D1, and the triode T6 is connected with a positive electrode of the diode D1. Through the abovementioned circuit in the utility model, the problem of limitation of a supply voltage and an input signal by a threshold voltage is solved, thereby realizing a shift between higher voltages.
Description
Technical field
The utility model relates to level displacement circuit, is specifically related to the panel computer level displacement circuit.
Background technology
In existing a lot of driving chip or power electronic chip system, all have different voltage, magnitude of voltage can arrive tens volts from several volts.Owing to there being the relation of restriction mutually between chip and chip, also just inevitably there is the conversion between signal between them, namely use high pressure and convert low pressure or low pressure to and convert the level displacement circuit of high pressure to.Almost at all power electronic chips or in driving chip, all by low pressure being converted to high pressure, carry out the driving power pipe now, appearance along with energy-conservation low-power consumption requirement, and the continuous expansion of power electronic chip or driving chip application scope, require higher to high-pressure section.And can only realize change in displacement between low-voltage in present level displacement circuit, can not realize the more change in displacement between high voltage., for solving the limited problem of threshold voltage to supply voltage and input signal, a kind of level displacement circuit of practicality is proposed, for the input stage of amplifier provides good level shift.
The utility model content
The utility model has overcome the deficiencies in the prior art, and the panel computer level displacement circuit is provided, and solves the limited problem of threshold voltage to supply voltage and input signal, realizes the more change in displacement between high voltage.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: the panel computer level displacement circuit, comprise triode T1, the triode T3, triode T5, triode T6, triode T4 and the triode T2 that connect to form successively closed-loop path, the end emitter that interconnects of described triode T1 and triode T2 all connects power supply, and triode T1 is connected basis set and is interconnected and connect input port with triode T2; Described triode T3 is the public connecting end of connecting triode T4 and triode T6 also; Described triode T4 is the public connecting end of connecting triode T3 and triode T5 also; The equal ground connection of public connecting end of described triode T5 and triode T6, also connect the negative pole of diode D1 on triode T5, triode T6 connects the positive pole of diode D1.
The positive pole of described diode D1 also connects input port.
Described triode T3 is connected public connecting end and is connected output port with triode T5.
Described triode T4 is connected public connecting end and is connected output port with triode T6.
Described triode T3, triode T4, triode T5 and triode T6 are metal-oxide-semiconductor.
Described triode T1 and triode T2 are the positive-negative-positive triode.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model has increased by two triode T1 and triode T2 on the basis of original circuit, and the basis set of a pair of triode all connects a DC level, control the collector voltage of triode T1 and triode T2 lower than default withstand voltage, can realize the more change in displacement between high voltage.
2, be connected with diode D1 between triode T5 and input port and realize one-way flow between data.
Description of drawings
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further elaborated, embodiment of the present utility model is not limited to this.
Embodiment:
As shown in Figure 1, the utility model comprises triode T1, triode T3, triode T5, triode T6, triode T4 and the triode T2 that connects to form successively closed-loop path, triode T3, triode T4, triode T5 and triode T6 are metal-oxide-semiconductor, and triode T1 and triode T2 are the positive-negative-positive triode.The end emitter that interconnects of the triode T1 of the present embodiment and triode T2 all connects power supply, and triode T1 is connected basis set and is interconnected and connect input port with triode T2.The triode T3 of the present embodiment is the public connecting end of connecting triode T4 and triode T6 also.The triode T4 of the present embodiment is the public connecting end of connecting triode T3 and triode T5 also, the equal ground connection of the public connecting end of triode T5 and triode T6, also connect the negative pole of diode D1 on triode T5, triode T6 connects the positive pole of diode D1, and the positive pole of diode D1 also connects input port.The triode T3 of the present embodiment is connected public connecting end and is connected output port with triode T5, triode T4 is connected public connecting end and is connected output port with triode T6.
On the basis of original level displacement circuit, increased a pair of triode T1 and T2, triode T1 is connected basis set and is connected and to communicate with DC level with triode T2, control transistor collector voltage lower than the withstand voltage of presetting, and can realize more high-tension compatibility.
Just can realize this utility model as mentioned above.
Claims (6)
1. panel computer level displacement circuit, it is characterized in that: comprise triode T1, the triode T3, triode T5, triode T6, triode T4 and the triode T2 that connect to form successively closed-loop path, the end emitter that interconnects of described triode T1 and triode T2 all connects power supply, and triode T1 is connected basis set and is interconnected and connect input port with triode T2; Described triode T3 is the public connecting end of connecting triode T4 and triode T6 also; Described triode T4 is the public connecting end of connecting triode T3 and triode T5 also; The equal ground connection of public connecting end of described triode T5 and triode T6, also connect the negative pole of diode D1 on triode T5, triode T6 connects the positive pole of diode D1.
2. panel computer level displacement circuit according to claim 1, it is characterized in that: the positive pole of described diode D1 also connects input port.
3. panel computer level displacement circuit according to claim 1 is characterized in that: described triode T3 is connected public connecting end and is connected output port with triode T5.
4. panel computer level displacement circuit according to claim 1 is characterized in that: described triode T4 is connected public connecting end and is connected output port with triode T6.
5. panel computer level displacement circuit according to claim 1, it is characterized in that: described triode T3, triode T4, triode T5 and triode T6 are metal-oxide-semiconductor.
6. according to claim 1-5 described panel computer level displacement circuits of any one, it is characterized in that: described triode T1 and triode T2 are the positive-negative-positive triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203652597U CN203289401U (en) | 2013-06-25 | 2013-06-25 | Level shift circuit of tablet personal computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203652597U CN203289401U (en) | 2013-06-25 | 2013-06-25 | Level shift circuit of tablet personal computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203289401U true CN203289401U (en) | 2013-11-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203652597U Expired - Fee Related CN203289401U (en) | 2013-06-25 | 2013-06-25 | Level shift circuit of tablet personal computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203289401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346777A (en) * | 2013-06-25 | 2013-10-09 | 四川品杰科技有限公司 | Shift circuit applicable to flat computer |
-
2013
- 2013-06-25 CN CN2013203652597U patent/CN203289401U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346777A (en) * | 2013-06-25 | 2013-10-09 | 四川品杰科技有限公司 | Shift circuit applicable to flat computer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20140625 |
|
| EXPY | Termination of patent right or utility model |