CN103042969A - Fully integrated high-reliability vehicle flasher integrated circuit - Google Patents
Fully integrated high-reliability vehicle flasher integrated circuit Download PDFInfo
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- CN103042969A CN103042969A CN2012105546785A CN201210554678A CN103042969A CN 103042969 A CN103042969 A CN 103042969A CN 2012105546785 A CN2012105546785 A CN 2012105546785A CN 201210554678 A CN201210554678 A CN 201210554678A CN 103042969 A CN103042969 A CN 103042969A
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Abstract
The invention relates to an integrated circuit, in particular to a fully integrated high-reliability vehicle flasher integrated circuit, belonging to the technical field of vehicle flashers. According to the fully integrated high-reliability vehicle flasher integrated circuit provided by the invention, the integrated circuit comprises a pre-stage driving circuit and a post-stage driving circuit connected with the pre-stage driving circuit; the post-stage driving circuit comprises a third triode and a PMOS (Positive Channel Metal Oxide Semiconductor) tube; the third triode adopts a PNP tube; the base electrode end of the third triode is connected with the output end of a phase reverser inside the pre-stage driving circuit; the emitter electrode end of the third triode is connected with the power supply end of the integrated circuit; the collector electrode end of the third triode is connected with the grid electrode end of the PMOS tube; the source electrode end of the PMOS tube is connected with the power supply end; and the drain electrode end of the PMOS tube is connected with the output end of the integrated circuit. The integrated circuit is high in integration level, the volume is reduced, the reliability is strengthened, and the use cost is reduced.
Description
Technical field
The present invention relates to a kind of integrated circuit, especially a kind of fully integrated high reliability flasher for vehicle integrated circuit belongs to the technical field of flasher for vehicle.
Background technology
As shown in Figure 1; Structured flowchart for existing flasher for vehicle integrated circuit, wherein, existing flasher for vehicle integrated circuit all adopts bipolar technology, withstand voltage not high, the relay coil of its driving has very high peak inverse voltage when energising and outage, the rear class of relay coil drives must increase discrete component in the outside of integrated circuit, this discrete component adopts the NPN pipe of high pressure, causes the volume of system larger; Namely the rear class driving comprises the first aerotron Q1 among the figure, and described the first aerotron Q1 adopts the NPN pipe, is NPN1; Discrete component is the second aerotron Q2, and described the second aerotron Q2 also adopts the NPN pipe, is NPN2.The saturation voltage drop of NPN pipe is large simultaneously, power consumption is high, and operating temperature is high, and the parts of system are more, and this all makes the reliability decrease of system, and cost is higher.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of fully integrated high reliability flasher for vehicle integrated circuit is provided, its integrated level is high, reduces volume, strengthens reliability, reduces use cost.
According to technical scheme provided by the invention, described fully integrated high reliability flasher for vehicle integrated circuit, described integrated circuit comprise front stage drive circuit and the post-stage drive circuit that is connected with described front stage drive circuit; Described post-stage drive circuit comprises the 3rd aerotron and PMOS pipe, described the 3rd aerotron adopts the PNP pipe, the base terminal of the 3rd aerotron is connected with the mouth of phase inverter in the front stage drive circuit, the emitter terminal of the 3rd aerotron is connected with the power end of integrated circuit, the collector terminal of the 3rd aerotron is connected with the gate terminal of PMOS pipe, the source terminal of PMOS pipe is connected with power end, and the drain electrode end of PMOS pipe is connected with the mouth of integrated circuit.
Described front stage drive circuit comprises the first comparator, the second comparator and the 3rd comparator, the end of oppisite phase of described the first comparator is connected with the in-phase end of the second comparator, and the end of oppisite phase of the first comparator and the in-phase end of the second comparator are connected with the startup input end of integrated circuit after interconnecting; The in-phase end of the first comparator is connected with an end of the first resistance and an end of the second resistance, the other end of the second resistance is connected with the end of oppisite phase of the second comparator and an end of the 3rd resistance, the other end ground connection of the 3rd resistance, the other end of the first resistance is connected with the power end of integrated circuit;
The mouth of the mouth of the first comparator and the second comparator all is connected with the return difference circuit, the mouth of return difference circuit is connected with the end of oppisite phase of the 3rd comparator, the input end of return difference circuit is connected with the mouth of short-circuit detecting module and the mouth of short-circuit detecting switch respectively, the input end of short-circuit detecting module is connected with the short-circuit detecting input end of integrated circuit, the input end of short-circuit detecting switch is connected with the switch input terminal of integrated circuit, and the mouth of short-circuit detecting switch is connected with the mouth of the 3rd comparator and the input end of phase inverter; The in-phase end of the 3rd comparator is connected with the first vibration coupling end of integrated circuit, and the mouth of return difference circuit is connected with the second vibration coupling end of integrated circuit.
The 3rd aerotron of post-stage drive circuit and PMOS pipe adopts BCD technique to prepare in the described integrated circuit.
The mouth of described integrated circuit is electrically connected with an end of relay coil, the other end ground connection of relay coil.
Advantage of the present invention: the effective BCD technique preparation of the 3rd aerotron and PMOS also is integrated in IC interior, realizes the post-stage drive circuit of integrated circuit, so that integrated circuit is simple, volume is little, and heating is few, and operating temperature is low, and reliability is high, and cost is low.
Description of drawings
Fig. 1 is the structured flowchart of existing flasher for vehicle integrated circuit.
Fig. 2 is the structured flowchart of flasher for vehicle integrated circuit of the present invention.
Description of reference numerals: 1-ground terminal, the 2-power end, the 3-mouth, 4-the first vibration coupling end, 5-the second vibration coupling end, the 6-switch input terminal, 7-short-circuit detecting input end, 8-starts input end, the 10-integrated circuit, 11-the first comparator, 12-the second comparator, 13-the 3rd comparator, 14-return difference circuit, 15-short-circuit detecting module, 16-short-circuit detecting switch, the 17-phase inverter, the 18-relay coil, Q1-the first aerotron, Q2-the second aerotron, Q3-the 3rd aerotron and Q4-PMOS pipe.
The specific embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in Figure 2: in order to improve reliability, reduce use cost, integrated circuit 10 of the present invention comprises front stage drive circuit and the post-stage drive circuit that is connected with described front stage drive circuit; Described post-stage drive circuit comprises the 3rd aerotron Q3 and PMOS pipe Q4, described the 3rd aerotron Q3 adopts the PNP pipe, the base terminal of the 3rd aerotron Q3 is connected with the mouth of phase inverter 17 in the front stage drive circuit, the emitter terminal of the 3rd aerotron Q3 is connected with the power end 2 of integrated circuit 10, the collector terminal of the 3rd aerotron Q3 is connected with the gate terminal of PMOS pipe Q4, the source terminal of PMOS pipe Q4 is connected with power end 2, and the drain electrode end of PMOS pipe Q4 is connected with the mouth of integrated circuit 10.
Particularly, the 3rd aerotron Q3 is the PNP1 among the figure, and PMOS pipe Q4 is the PMOS1 pipe, and during implementation of the present invention, the 3rd aerotron Q3 of post-stage drive circuit and PMOS pipe Q4 adopt BCD technique to prepare.
The package pins of described integrated circuit 10 and front stage drive circuit are all identical with existing structure, wherein, described front stage drive circuit comprises the first comparator 11, the second comparator 12 and the 3rd comparator 13, the end of oppisite phase of described the first comparator 11 is connected with the in-phase end of the second comparator 12, and the end of oppisite phase of the first comparator 11 and the in-phase end of the second comparator 12 are connected with the startup input end 8 of integrated circuit 10 after interconnecting; The in-phase end of the first comparator 11 is connected with an end of the first resistance R 1 and an end of the second resistance R 2, the other end of the second resistance R 2 is connected with the end of oppisite phase of the second comparator 12 and an end of the 3rd resistance R 3, the other end ground connection of the 3rd resistance R 3, the other end of the first resistance R 1 is connected with the power end 2 of integrated circuit 10;
The mouth of the mouth of the first comparator 11 and the second comparator 12 all is connected with return difference circuit 14, the mouth of return difference circuit 14 is connected with the end of oppisite phase of the 3rd comparator 13, the input end of return difference circuit 14 is connected with the mouth of short-circuit detecting module 15 and the mouth of short-circuit detecting switch 16 respectively, the input end of short-circuit detecting module 15 is connected with the short-circuit detecting input end 7 of integrated circuit 10, the input end of short-circuit detecting switch 16 is connected with the switch input terminal 6 of integrated circuit 10, and the mouth of short-circuit detecting switch 16 is connected with the mouth of the 3rd comparator 13 and the input end of phase inverter 17; The in-phase end of the 3rd comparator 14 is connected with the first vibration coupling end 4 of integrated circuit 10, and the mouth of return difference circuit 14 is connected with the second vibration coupling end 5 of integrated circuit 10.
When the 3rd aerotron Q3 of post-stage drive circuit and PMOS pipe Q4 adopt BCD technique to prepare, the first resistance R 1 of front stage drive circuit, the second resistance R 2, the 3rd resistance R 3, the first comparator 11, the second comparator 12, the 3rd comparator 13, return difference circuit 14, short-circuit detecting module 15, short-circuit detecting switch 16 and phase inverter 17 also adopt BCD technique to prepare, and front stage drive circuit and post-stage drive circuit adopt the preparation of BCD technique on same substrate.
As shown in Figure 2: during use, one end of relay coil 18 is connected with the mouth of integrated circuit 10, the other end ground connection of relay coil 18, ground terminal 1 ground connection of integrated circuit 10, the first vibration coupling end 4 and the second vibration coupling end 5 are connected with external circuit and cooperate the rear oscillator that forms.Power end 2 is connected with external power supply.After starting input end 8 actuation signal is arranged, return difference circuit 14 is according to the output of the first comparator 11 and the second comparator 12, and cooperates the oscillator signal that produces the flicker of control steering indicating lights by the 3rd comparator 13.Whether short-circuit detecting module 15 short circuit occurs according to the input signal detection of short-circuit detecting input end 7, and when having short circuit, short-circuit detecting module 15 is closed the return difference circuit to return difference circuit 14 incoming signals.Whether short-circuit detecting switch 16 is opened according to the signal monitoring short-circuit detecting module 15 of switch input terminal 6 inputs.According to the oscillator signal that return difference circuit 14 produces, Q4 directly drives relay coil 18 by the PMOS pipe.
Because the 3rd aerotron Q3 and PMOS pipe Q4 adopt the preparation of BCD technique and be integrated in integrated circuit 10 inside, realize the post-stage drive circuit of integrated circuit, so that integrated circuit 10 is simple, volume is little, and heating is few, and operating temperature is low, and reliability is high, and cost is low.
Claims (4)
1. fully integrated high reliability flasher for vehicle integrated circuit, described integrated circuit (10) comprise front stage drive circuit and the post-stage drive circuit that is connected with described front stage drive circuit; It is characterized in that: described post-stage drive circuit comprises the 3rd aerotron (Q3) and PMOS pipe (Q4), described the 3rd aerotron (Q3) adopts the PNP pipe, the base terminal of the 3rd aerotron (Q3) is connected with the mouth of phase inverter (17) in the front stage drive circuit, the emitter terminal of the 3rd aerotron (Q3) is connected with the power end (2) of integrated circuit (10), the collector terminal of the 3rd aerotron (Q3) is connected with the gate terminal of PMOS pipe (Q4), the source terminal of PMOS pipe (Q4) is connected with power end (2), and the drain electrode end of PMOS pipe (Q4) is connected with the mouth of integrated circuit (10).
2. fully integrated high reliability flasher for vehicle integrated circuit according to claim 1, it is characterized in that: described front stage drive circuit comprises the first comparator (11), the second comparator (12) and the 3rd comparator (13), the end of oppisite phase of described the first comparator (11) is connected with the in-phase end of the second comparator (12), and the end of oppisite phase of the first comparator (11) and the in-phase end of the second comparator (12) are connected with the startup input end (8) of integrated circuit (10) after interconnecting; The in-phase end of the first comparator (11) is connected with an end of the first resistance (R1) and an end of the second resistance (R2), the other end of the second resistance (R2) is connected with the end of oppisite phase of the second comparator (12) and an end of the 3rd resistance (R3), the other end ground connection of the 3rd resistance (R3), the other end of the first resistance (R1) is connected with the power end (2) of integrated circuit (10);
The mouth of the mouth of the first comparator (11) and the second comparator (12) all is connected with return difference circuit (14), the mouth of return difference circuit (14) is connected with the end of oppisite phase of the 3rd comparator (13), the input end of return difference circuit (14) is connected with the mouth of short-circuit detecting module (15) and the mouth of short-circuit detecting switch (16) respectively, the input end of short-circuit detecting module (15) is connected with the short-circuit detecting input end (7) of integrated circuit (10), the input end of short-circuit detecting switch (16) is connected with the switch input terminal (6) of integrated circuit (10), and the mouth of short-circuit detecting switch (16) is connected with the mouth of the 3rd comparator (13) and the input end of phase inverter (17); The in-phase end of the 3rd comparator (14) is connected with the first vibration coupling end (4) of integrated circuit (10), and the mouth of return difference circuit (14) is connected with the second vibration coupling end (5) of integrated circuit (10).
3. fully integrated high reliability flasher for vehicle integrated circuit according to claim 2 is characterized in that: the 3rd aerotron (Q3) of the interior post-stage drive circuit of described integrated circuit (10) and PMOS pipe (Q4) adopt BCD technique to prepare.
4. fully integrated high reliability flasher for vehicle integrated circuit according to claim 1, it is characterized in that: the mouth (3) of described integrated circuit (10) is electrically connected the other end ground connection of relay coil (18) with an end of relay coil (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210554678.5A CN103042969B (en) | 2012-12-19 | 2012-12-19 | Fully integrated high reliability flasher for vehicle integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210554678.5A CN103042969B (en) | 2012-12-19 | 2012-12-19 | Fully integrated high reliability flasher for vehicle integrated circuit |
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| Publication Number | Publication Date |
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| CN103042969A true CN103042969A (en) | 2013-04-17 |
| CN103042969B CN103042969B (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210554678.5A Expired - Fee Related CN103042969B (en) | 2012-12-19 | 2012-12-19 | Fully integrated high reliability flasher for vehicle integrated circuit |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5192930A (en) * | 1991-12-26 | 1993-03-09 | Brueggemann Douglas C | F.E.T. flasher |
| US5247280A (en) * | 1991-08-01 | 1993-09-21 | Cooper Industries, Inc. | Combination vehicle flasher having first and second flash rates and duty rates |
| US5389823A (en) * | 1990-09-06 | 1995-02-14 | Hopkins Manufacturing Corporation | Brake and turn signal adaptor for trailers |
| CN2866247Y (en) * | 2005-07-04 | 2007-02-07 | 瑞立集团有限公司 | Non-contact steering alarming flashing device for vehicle |
| CN101964648A (en) * | 2010-04-12 | 2011-02-02 | 湖北大学 | High-threshold value voltage comparison circuit consisting of high-precision low-voltage comparator |
| CN202050391U (en) * | 2011-02-24 | 2011-11-23 | 广州视源电子科技有限公司 | Delayed starting circuit for MOS transistor |
| CN203005210U (en) * | 2012-12-19 | 2013-06-19 | 无锡创立达科技有限公司 | Full-integrated high-reliability integrated circuit for automotive flasher |
-
2012
- 2012-12-19 CN CN201210554678.5A patent/CN103042969B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5389823A (en) * | 1990-09-06 | 1995-02-14 | Hopkins Manufacturing Corporation | Brake and turn signal adaptor for trailers |
| US5247280A (en) * | 1991-08-01 | 1993-09-21 | Cooper Industries, Inc. | Combination vehicle flasher having first and second flash rates and duty rates |
| US5192930A (en) * | 1991-12-26 | 1993-03-09 | Brueggemann Douglas C | F.E.T. flasher |
| CN2866247Y (en) * | 2005-07-04 | 2007-02-07 | 瑞立集团有限公司 | Non-contact steering alarming flashing device for vehicle |
| CN101964648A (en) * | 2010-04-12 | 2011-02-02 | 湖北大学 | High-threshold value voltage comparison circuit consisting of high-precision low-voltage comparator |
| CN202050391U (en) * | 2011-02-24 | 2011-11-23 | 广州视源电子科技有限公司 | Delayed starting circuit for MOS transistor |
| CN203005210U (en) * | 2012-12-19 | 2013-06-19 | 无锡创立达科技有限公司 | Full-integrated high-reliability integrated circuit for automotive flasher |
Non-Patent Citations (2)
| Title |
|---|
| 娄云等: "RTD-SG-A型闪光继电器的研制", 《汽车电器》, no. 7, 31 July 2008 (2008-07-31) * |
| 钱少雅: "基于BCD工艺的白光LED驱动器设计", 《中国优秀硕士学位论文全文数据库》, no. 12, 15 December 2010 (2010-12-15), pages 27 - 35 * |
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