CN202652057U - Supply circuit for quick start of integrated circuit - Google Patents
Supply circuit for quick start of integrated circuit Download PDFInfo
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- CN202652057U CN202652057U CN 201220329324 CN201220329324U CN202652057U CN 202652057 U CN202652057 U CN 202652057U CN 201220329324 CN201220329324 CN 201220329324 CN 201220329324 U CN201220329324 U CN 201220329324U CN 202652057 U CN202652057 U CN 202652057U
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- triode
- power supply
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Abstract
The utility model discloses a supply circuit for quick start of an integrated circuit. The disclosed supply circuit comprises a power supply terminal, an integrated circuit voltage input terminal, a first triode, a first diode, a first capacitor, a first voltage regulator diode, a first divider resistor and a second divider resistor. The base electrode of the first triode is connected with the power supply terminal by the first divider resistor; the collector electrode thereof is connected with the power supply terminal by the second divider resistor; and the emitting electrode thereof is connected with the anode of the first diode. The cathode of the first diode is connected with the integrated circuit voltage input terminal. The first capacitor is arranged between the integrated circuit voltage input terminal and the ground. And the anode of the first voltage regulator diode is grounded and the cathode thereof is connected with the base electrode of the first triode. According to the provided supply circuit, when the power supply terminal is electrified, enough currents can be provided for the integrated circuit voltage input terminal rapidly, so that the integrated circuit can be rapidly started. Besides, the supply circuit has characteristics of simple structure and stable performance and the like.
Description
Technical field
The utility model relates to the power supply circuits technical field, relates in particular to a kind of for the quick power supply circuits that start of integrated circuit.
Background technology
Integrated circuit (integrated circuit) is a kind of microelectronic device or parts.Adopt certain technique, the elements such as transistor, diode, resistance, electric capacity and inductance required in the circuit and wire interconnects together, be produced on a fritter or a few fritter semiconductor wafer or the dielectric substrate, then be encapsulated in the shell, become the microstructure with required circuit function; Wherein all elements structurally form a whole, make electronic component stride forward major step towards microminaturization, low-power consumption and high reliability aspect.It represents with letter " IC " in circuit.
The bus-powered mode of the general employing of the power supply circuits of existing integrated circuit, the resistance that is power supply by connecting (number of described resistance may for a plurality of) is connected to integrated circuit, yet, when the voltage of power supply hangs down, the electric current that is input to integrated circuit is also lower, can't start fast integrated circuit.
In view of this, prior art has yet to be improved and developed.
The utility model content
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of and is intended to solve when integrated circuit starts in the prior art for the quick power supply circuits that start of integrated circuit, because input current is lower, thereby causes starting slow problem.
The technical solution of the utility model is as follows:
A kind of for the quick power supply circuits that start of integrated circuit, wherein, comprising: feeder ear, integrated circuit voltage input end, the first triode, the first diode, the first electric capacity, the first voltage stabilizing didoe, the first divider resistance and the second divider resistance;
The base stage of described the first triode is connected to feeder ear by the first divider resistance, and collector electrode is connected to feeder ear by the second divider resistance, and emitter connects the positive pole of the first diode; The negative pole of the first diode is connected to the integrated circuit voltage input end; Described the first electric capacity is arranged between integrated circuit voltage input end and the ground; The plus earth of described the first voltage stabilizing didoe, negative pole are connected to the base stage of the first triode.
Described for the quick power supply circuits that start of integrated circuit, wherein, described the first triode is NPN type triode.
Described for the quick power supply circuits that start of integrated circuit, wherein, described the first divider resistance comprises the first resistance, the second resistance and the 3rd resistance of successively series connection.
Described wherein, described the second divider resistance comprises the 4th resistance and the 5th resistance of series connection for the quick power supply circuits that start of integrated circuit, and described the 4th resistance and the 5th resistance are metal oxidation resistance.
Described for the quick power supply circuits that start of integrated circuit, wherein, also comprise reverse voltage input, the second diode, the 3rd diode, the second voltage stabilizing didoe, the 3rd divider resistance, the second electric capacity and the 6th resistance;
Described reverse voltage input is connected to the positive pole of the second diode successively by the 6th resistance and the second electric capacity, the negative pole of the second diode is connected to the integrated circuit voltage input end; The negative pole of the 3rd diode connects the positive pole of the second diode, the plus earth of the 3rd diode; The plus earth of described the second voltage stabilizing didoe, negative pole is connected to feeder ear by the 3rd divider resistance.
Described for the quick power supply circuits that start of integrated circuit, wherein, also comprise cut-off signals input, the second triode, the 7th resistance, the 8th resistance and the 9th resistance;
The base stage of described the second triode connects the cut-off signals input by the 8th resistance, grounded emitter, and collector electrode connects the base stage of the first triode by the 9th resistance; The 7th resistance is arranged between the base stage and ground of the second triode.
Beneficial effect: of the present utility model for the quick power supply circuits that start of integrated circuit, by being arranged on the first triode and the first diode between feeder ear and the integrated circuit voltage input end, so that feeder ear is when beginning to power on, but can supply enough electric currents to the integrated circuit voltage input end, so that integrated circuit can start fast by Quick; The characteristics such as that described power supply circuits also have is simple in structure, stable performance.
Description of drawings
Fig. 1 is the circuit diagram of the first embodiment of the power supply circuits that start fast for integrated circuit of the present utility model.
Fig. 2 is the circuit diagram of the second embodiment of the power supply circuits that start fast for integrated circuit of the present utility model.
Embodiment
The utility model provides a kind of power supply circuits that start fast for integrated circuit, and is clearer, clear and definite for making the purpose of this utility model, technical scheme and effect, below the utility model further described.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Embodiment one
See also Fig. 1, in the present embodiment, the described power supply circuits that start fast for integrated circuit comprise: feeder ear 10, integrated circuit voltage input end 20, the first triode Q1, the first diode D1, the first capacitor C 1, the first voltage stabilizing didoe ZD1, the first divider resistance and the second divider resistance; The base stage of described the first triode Q1 is connected to feeder ear 10 by the first divider resistance, and collector electrode is connected to feeder ear 10 by the second divider resistance, and emitter connects the positive pole of the first diode D1; The negative pole of the first diode D1 is connected to integrated circuit voltage input end 20; Described the first capacitor C 1 is arranged between integrated circuit voltage input end 20 and the ground; The plus earth of described the first voltage stabilizing didoe ZD1, negative pole are connected to the base stage of the first triode Q1.
In the present embodiment, described the first divider resistance comprises the first resistance R 1, the second resistance R 2 and the 3rd resistance R 3; The second divider resistance comprises the 4th resistance R 4 and the 5th resistance R 5.
When beginning to power on, feeder ear 10 be after the input voltage rectification voltage (in the present embodiment, the scope of described input voltage at AC90V between the AC260V), when input voltage is very low (for example AC90V), iff being by a series of divider resistance of connecting, the electric current that is input to integrated circuit then can be lower, and integrated circuit then can't start; And in the first embodiment of the application, initial voltage is input to the base stage of the first triode Q1 by the first resistance R 1, the second resistance R 2 and the 3rd resistance R 3, make the first triode conducting, then feeder ear 10, the 4th resistance R 4, the 5th resistance R 5 and the first triode Q1 form a current path, again through behind the first diode D1, be input to integrated circuit voltage input end 20, thereby provide enough electric current to integrated circuit, so that integrated circuit can start fast.In addition, by the first voltage stabilizing didoe ZD1, can be so that the base voltage of the first triode Q1 be stabilized under the fixed numbers: such as, when the first voltage stabilizing didoe ZD1 is the 15V voltage stabilizing didoe, guarantee that then the base voltage maximum of the first triode Q1 is no more than 15V.
Further, in the present embodiment, described the first triode Q1 is a NPN type triode (can adopt the high-voltage three-pole pipe, such as 13003); Described the 4th resistance R 4 and the 5th resistance R 5 adopt metal oxidation resistance.
In order to guarantee the voltage input of integrated circuit after power supply is stable, can bring in by reverse voltage input and power.Please continue to consult Fig. 1, the described power supply circuits that start fast for integrated circuit can also comprise reverse voltage input 30, the second diode D2, the 3rd diode D3, the second voltage stabilizing didoe ZD2, the 3rd divider resistance, the second capacitor C 2 and the 6th resistance R 6;
Described reverse voltage input 30 is connected to the positive pole of the second diode D2 successively by the 6th resistance R 6 and the second capacitor C 2, the negative pole of the second diode D2 is connected to integrated circuit voltage input end 20; The negative pole of the 3rd diode D3 connects the positive pole of the second diode D2, the plus earth of the 3rd diode D3; The plus earth of described the second voltage stabilizing didoe ZD2, negative pole is connected to feeder ear by the 3rd divider resistance.
In the present embodiment, described the 3rd divider resistance comprises the tenth resistance R 10, the 11 resistance R 11 and the 12 resistance R 12 of successively series connection.
After the power supply of integrated circuit is stable, voltage by 30 inputs of reverse voltage input is powered to integrated circuit voltage input end 20 by the halfwave rectifier loop that the 6th resistance R 6, the second capacitor C 2, the second diode D2 and the 3rd diode D3 consist of successively, at this moment, the voltage of integrated circuit voltage input end 20 is determined (in the present embodiment by the second voltage stabilizing didoe ZD2, described the second voltage stabilizing didoe ZD2 is the 18V voltage stabilizing didoe), at this moment, the first diode D1 oppositely ends, the first not conducting of triode Q1 does not have electric current to pass through on the second divider resistance.
Embodiment two
For can adaptive circuit abnormal situation, can also control described power supply circuits by a cut-off signals.
See also Fig. 2, the described power supply circuits that start fast for integrated circuit also comprise cut-off signals input 40, the second triode Q2, the 7th resistance R 7, the 8th resistance R 8 and the 9th resistance R 9;
The base stage of described the second triode Q2 connects cut-off signals input 40 by the 8th resistance R 8, grounded emitter, and collector electrode connects the base stage of the first triode Q1 by the 9th resistance R 9; The 7th resistance R 7 is arranged between the base stage and ground of the second triode Q2.
When circuit abnormal, reverse voltage input 30 is not worked, cut-off signals input 40 inputs one cut-off signals (in the present embodiment, be a high level signal), so that the second triode Q2 conducting, at this moment, the base voltage of the first triode Q1 by the first divider resistance (in the present embodiment, i.e. the first resistance R 1, the second resistance R 2 and the 3rd resistance R 3) and 9 decisions of the 9th resistance R, can concern to come control integration circuit voltage input 20 input voltages by the resistance of regulating between it, make the input voltage of integrated circuit voltage input end 20 be lower than the normal working voltage of integrated circuit, make integrated circuit enter resting state, and keep power supply.
In sum, of the present utility model for the quick power supply circuits that start of integrated circuit, it comprises: feeder ear, integrated circuit voltage input end, the first triode, the first diode, the first electric capacity, the first voltage stabilizing didoe, the first divider resistance and the second divider resistance; The base stage of described the first triode is connected to feeder ear by the first divider resistance, and collector electrode is connected to feeder ear by the second divider resistance, and emitter connects the positive pole of the first diode; The negative pole of the first diode is connected to the integrated circuit voltage input end; Described the first electric capacity is arranged between integrated circuit voltage input end and the ground; The plus earth of described the first voltage stabilizing didoe, negative pole are connected to the base stage of the first triode.By being arranged on the first triode and the first diode between feeder ear and the integrated circuit voltage input end so that feeder ear is when beginning to power on, but can Quick for enough electric currents to the integrated circuit voltage input end, so that integrated circuit can start fast; The characteristics such as that described power supply circuits also have is simple in structure, stable performance.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or conversion, all these improvement and conversion all should belong to the protection range of the utility model claims.
Claims (6)
1. one kind is used for the power supply circuits that integrated circuit starts fast, it is characterized in that, comprising: feeder ear, integrated circuit voltage input end, the first triode, the first diode, the first electric capacity, the first voltage stabilizing didoe, the first divider resistance and the second divider resistance;
The base stage of described the first triode is connected to feeder ear by the first divider resistance, and collector electrode is connected to feeder ear by the second divider resistance, and emitter connects the positive pole of the first diode; The negative pole of the first diode is connected to the integrated circuit voltage input end; Described the first electric capacity is arranged between integrated circuit voltage input end and the ground; The plus earth of described the first voltage stabilizing didoe, negative pole are connected to the base stage of the first triode.
2. according to claim 1 for the quick power supply circuits that start of integrated circuit, it is characterized in that described the first triode is NPN type triode.
3. according to claim 1 for the quick power supply circuits that start of integrated circuit, it is characterized in that described the first divider resistance comprises the first resistance, the second resistance and the 3rd resistance of successively series connection.
4. the power supply circuits for the quick startup of integrated circuit according to claim 1 is characterized in that described the second divider resistance comprises the 4th resistance and the 5th resistance of series connection, and described the 4th resistance and the 5th resistance are metal oxidation resistance.
5. the power supply circuits for the quick startup of integrated circuit according to claim 1 is characterized in that, also comprise reverse voltage input, the second diode, the 3rd diode, the second voltage stabilizing didoe, the 3rd divider resistance, the second electric capacity and the 6th resistance;
Described reverse voltage input is connected to the positive pole of the second diode successively by the 6th resistance and the second electric capacity, the negative pole of the second diode is connected to the integrated circuit voltage input end; The negative pole of the 3rd diode connects the positive pole of the second diode, the plus earth of the 3rd diode; The plus earth of described the second voltage stabilizing didoe, negative pole is connected to feeder ear by the 3rd divider resistance.
6. the power supply circuits for the quick startup of integrated circuit according to claim 1 is characterized in that, also comprise cut-off signals input, the second triode, the 7th resistance, the 8th resistance and the 9th resistance;
The base stage of described the second triode connects the cut-off signals input by the 8th resistance, grounded emitter, and collector electrode connects the base stage of the first triode by the 9th resistance; The 7th resistance is arranged between the base stage and ground of the second triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329324 CN202652057U (en) | 2012-07-09 | 2012-07-09 | Supply circuit for quick start of integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329324 CN202652057U (en) | 2012-07-09 | 2012-07-09 | Supply circuit for quick start of integrated circuit |
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| Publication Number | Publication Date |
|---|---|
| CN202652057U true CN202652057U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220329324 Expired - Fee Related CN202652057U (en) | 2012-07-09 | 2012-07-09 | Supply circuit for quick start of integrated circuit |
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| Country | Link |
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| CN (1) | CN202652057U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508458A (en) * | 2017-09-28 | 2017-12-22 | 广州中逸光电子科技有限公司 | A kind of start-up circuit of super wide voltage accessory power supply PWM chip |
| CN109995018A (en) * | 2017-12-29 | 2019-07-09 | 上海亿盟电气自动化技术有限公司 | A kind of low pressure controller High-reliability power source circuit |
-
2012
- 2012-07-09 CN CN 201220329324 patent/CN202652057U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508458A (en) * | 2017-09-28 | 2017-12-22 | 广州中逸光电子科技有限公司 | A kind of start-up circuit of super wide voltage accessory power supply PWM chip |
| CN109995018A (en) * | 2017-12-29 | 2019-07-09 | 上海亿盟电气自动化技术有限公司 | A kind of low pressure controller High-reliability power source circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20200709 |