CN204659637U - Based on the car load CAN wake-up circuit of TJA1041AT interface chip - Google Patents
Based on the car load CAN wake-up circuit of TJA1041AT interface chip Download PDFInfo
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- CN204659637U CN204659637U CN201520346393.1U CN201520346393U CN204659637U CN 204659637 U CN204659637 U CN 204659637U CN 201520346393 U CN201520346393 U CN 201520346393U CN 204659637 U CN204659637 U CN 204659637U
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Abstract
The utility model relates to a kind of car load CAN wake-up circuit based on TJA1041AT interface chip, comprises TJA1041AT interface chip, and the 12V level signal of car load KL_30 meets TJA1041AT interface chip V as energizing signal
bATpin, ignition signal KL_15 connects TJA1041AT interface chip wakeup pin as energizing signal, and CAN provides message to connect TJA1041AT interface chip as energizing signal
with EN pin, what TJA1041AT interface chip INH pin exported wakes up or standby signal, connects that 12V electric power loop wakes end up, 12V turns 5V power supply chip and 12V turns 3.3V power supply chip Enable Pin respectively.By the reasonable disposition to CAN transceiving chip pin hardware circuit, the CAN awakening mode of electronlmobil is more optimized, finally makes different automobile types, the electronlmobil of different operating mode can both reach desirable quiescent current needs.
Description
Technical field
The utility model relates to electricity field, particularly relates to automotive control circuit, particularly a kind of car load CAN wake-up circuit based on TJA1041AT interface chip.
Background technology
New-energy automobile industry is more and more concerned in recent years, also increasingly strict to the requirement of its entire car controller systems technology.Wherein, in new-energy automobile system, also have a lot of application to need constant current source at present, even be also like this when parking, these apply most important requirement is exactly low quiescent current.By optimal control circuit, select the device that power consumption is lower, coordinate suitable car load CAN to sleep and arousal function, the object reducing entire car controller quiescent current can be reached.
Sleep and arousal function because existing many electronlmobils do not possess car load CAN, cause car load quiescent current in standby excessive, low tension battery power consumption is too fast, and the energy of battery cannot be made to be used more effectively.And the CAN arouse machine processed of some entire car controllers comprehensively cannot meet the working condition demand of all kinds of different automobile types at present.
Summary of the invention
The utility model is the problem for automobile control and optimize, propose a kind of car load CAN wake-up circuit based on TJA1041AT interface chip, make electric vehicle controller enter sleep pattern in the long-time out-of-run situation of car load, finally reach entire car controller in the power-offstate quiescent current be down to minimum requirement.And can, under car load is in different stand situation, provide multiple awakening mode to select, the car load CAN solving different automobile types wakes demand up comprehensively.
The technical solution of the utility model is: a kind of car load CAN wake-up circuit based on TJA1041AT interface chip, comprises TJA1041AT interface chip, and the 12V level signal of car load KL_30 meets TJA1041AT interface chip V as energizing signal
bATpin, ignition signal KL_15 connects TJA1041AT interface chip wakeup pin as energizing signal, and CAN provides message to connect TJA1041AT interface chip as energizing signal
with EN pin, what TJA1041AT interface chip INH pin exported wakes up or standby signal, connects that 12V electric power loop wakes end up, 12V turns 5V power supply chip and 12V turns 3.3V power supply chip Enable Pin respectively.
Described 12V turns 5V power supply chip and 12V and turns 3.3V power supply chip and select TPS5410QDRQ1, and TJA1041AT interface chip INH pin exports and connects Enable Pin ENA pin by divider resistance.
Described ignition signal KL_15 and the output of TJA1041AT interface chip INH pin all access 12V electric power loop and wake end up.
The beneficial effects of the utility model are: the utility model is based on the car load CAN wake-up circuit of TJA1041AT interface chip, by the reasonable disposition to CAN transceiving chip pin hardware circuit, in conjunction with the action of MCU to I/O mouth, the CAN awakening mode of electronlmobil is more optimized, finally make different automobile types, the electronlmobil of different operating mode can both reach desirable quiescent current needs.New technological means is provided for improving the researchs such as electric automobile energy utilization ratio.
Accompanying drawing explanation
Fig. 1 is the utility model CAN wake-up circuit figure;
Fig. 2 is the utility model power supply chip working circuit diagram;
Fig. 3 is that the utility model ignition signal KL_15 and INH pin determine 12V voltage circuit circuit diagram.
Detailed description of the invention
First by configuration TJA1041AT interface chip
with the arouse machine processed of EN pin level control CAN transceiver part, and utilize its V
bATthe adjustment of pin and wakeup pin and bus CAN message completes the control to its INH level translation, eventually through the Enable Pin of the level translation control circuit power supply chip of the INH pin of TJA1041AT chip, and control the standby of controller current supply circuit thus and restart, finally realize the CAN arouse machine processed of entire car controller.
CAN wake-up circuit figure as shown in Figure 1, by being high level by the INH pin configuration of TJA1041AT, and set high level by the Enable Pin ENA pin (INH1 the 5th pin) of power supply chip TPS5410QDRQ1 in the zone bit triggering graph 2 of this pin, make it be set up by current supply circuit of 5V and 3.3V within 10ms.This pin receives the anode of D3 diode simultaneously simultaneously with KL_15 car load ignition signal, the foundation for 12V voltage circuit provides two kinds to wake selection up, as shown in Figure 3.MCU will simultaneously
be configured to high level with EN, finally complete the process waken up by TJA1041AT.
By being low level by the INH pin configuration of TJA1041AT, TJA1041AT is made to enter sleep state, and move the Enable Pin ENA pin of power supply chip TPS5410QDRQ1 in Fig. 2 to low level by the zone bit of this pin, feed circuit are made to enter sleep pattern, because now system stops the power supply to MCU, then
now low level is moved to by hardware circuit, as shown in Figure 1 with EN pin.
Working process of the present utility model: the utility model provides three kinds of awakening modes, and the mode that its pattern is configured to high level by INH determines.
Mode one: V
bATconnect the 12V level of car load KL_30, trigger INH high level.
Mode two: wakeup pin provides rise/fall edge by outside.(when KL_15 access, rise to 12V from 0, produce positive rise; Time KL_15 breaks, drop to 0V from 12, produce falling edge)
Mode three: provide message to trigger INH high level by CAN.
(V
cCand V
i/Ocontrol enable power supply chip by INH pin respectively and provide 5V and 3.3V.)
The CAN sleep that the utility model provides under the different operating mode of electronlmobil and awakening mode as follows:
(1) OFF shelves hung by car load, trigger entire car controller sleep pattern.
When OFF shelves hung by car load time, ignition signal KL_15 is dragged down, the power-off of car load high pressure, and controller is by gathering the CAN arouse machine processed of KL_15 signal control car load, and when controller detects that KL_15 is low level, MCU will
be configured to low level with EN, INH level is dragged down, and the Enable Pin ENA of connected D3 and TPS5410QDRQ1 is dragged down, and system power supply loop enters sleep pattern.
(2) ON shelves hung by car load, trigger entire car controller awakening mode.
Now car load has high voltage supply, the WAKEUP pin of CAN chip obtains a positive rise by ignition signal simultaneously, the INH pin of CAN chip provides the level pulse of the 8ms of an about 12V, the Enable Pin ENA of D3 and the TPS5410QDRQ1 connected by this pulse conducting, reached the level pulse positive rise that the current supply circuit of 12V, 5V, 3.3V is provided at INH pin occur after 10ms within the object set up, with this, INH pin is remained on the state of high level.While 5V and 3.3V sets up, MCU obtains electric, will
be configured to high level with EN, and TOD pin is set high.System wake-up after above overall process also works.
(3) OFF shelves (car load is without KL_15 signal) hung by car load, triggers entire car controller sleep pattern.
This vehicle is without KL_15 ignition signal, complete machine needs the CAN arouse machine processed controlling car load by gathering high-voltage signal, when controller detects the power-off of bus high pressure, STB and EN is configured to low level by MCU, INH level is dragged down, the Enable Pin ENA of connected D3 and TPS5410QDRQ1 is dragged down, and system power supply loop enters sleep pattern.
(4) ON shelves (car load is without KL_15 signal) hung by car load, triggers entire car controller awakening mode.
Now car load has high voltage supply, CAN chip provides the level pulse of the 8ms of an about 12V by bus message control INH pin simultaneously, the Enable Pin ENA of D3 and the TPS5410QDRQ1 connected by this pulse conducting, reached the level pulse positive rise that the current supply circuit of 12V, 5V, 3.3V is provided at INH pin occur after 10ms within the object set up, with this, INH pin is remained on the state of high level.While 5V and 3.3V sets up, MCU obtains electric, will
be configured to high level with EN, and TOD pin is set high.System wake-up after above overall process also works.
Claims (3)
1. based on a car load CAN wake-up circuit for TJA1041AT interface chip, it is characterized in that, comprise TJA1041AT interface chip, the 12V level signal of car load KL_30 meets TJA1041AT interface chip V as energizing signal
bATpin, ignition signal KL_15 connects TJA1041AT interface chip wakeup pin as energizing signal, and CAN provides message to connect TJA1041AT interface chip as energizing signal
with EN pin, what TJA1041AT interface chip INH pin exported wakes up or standby signal, connects that 12V electric power loop wakes end up, 12V turns 5V power supply chip and 12V turns 3.3V power supply chip Enable Pin respectively.
2. according to claim 1 based on the car load CAN wake-up circuit of TJA1041AT interface chip, it is characterized in that, described 12V turns 5V power supply chip and 12V and turns 3.3V power supply chip and select TPS5410QDRQ1, and TJA1041AT interface chip INH pin exports and connects Enable Pin ENA pin by divider resistance.
3. according to claim 1 based on the car load CAN wake-up circuit of TJA1041AT interface chip, it is characterized in that, described ignition signal KL_15 and the output of TJA1041AT interface chip INH pin all access 12V electric power loop and wake end up.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520346393.1U CN204659637U (en) | 2015-05-26 | 2015-05-26 | Based on the car load CAN wake-up circuit of TJA1041AT interface chip |
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| CN201520346393.1U CN204659637U (en) | 2015-05-26 | 2015-05-26 | Based on the car load CAN wake-up circuit of TJA1041AT interface chip |
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| CN105553803A (en) * | 2015-12-10 | 2016-05-04 | 北京新能源汽车股份有限公司 | Method and system for electric vehicle network management |
| CN108241361A (en) * | 2017-12-29 | 2018-07-03 | 江苏车和家汽车有限公司 | A kind of vehicle power supply control method, controller and vehicle |
| CN108352993A (en) * | 2015-11-10 | 2018-07-31 | 大众汽车有限公司 | The method of industry ethernet, control device and the control device for waking up industry ethernet |
| CN110154937A (en) * | 2018-02-10 | 2019-08-23 | 深圳市北航电子有限公司 | A kind of standby processing circuit of vehicle mounted guidance |
| CN110208591A (en) * | 2019-04-30 | 2019-09-06 | 惠州市德赛西威汽车电子股份有限公司 | A kind of voltage detecting circuit and automobile of low quiescent current |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108352993A (en) * | 2015-11-10 | 2018-07-31 | 大众汽车有限公司 | The method of industry ethernet, control device and the control device for waking up industry ethernet |
| US10700887B2 (en) | 2015-11-10 | 2020-06-30 | Volkswagen Aktiengesellschaft | Ethernet bus, controller and method for waking a controller of an ethernet bus |
| CN108352993B (en) * | 2015-11-10 | 2020-11-24 | 大众汽车有限公司 | Ethernet bus, control device and method for waking up control device of Ethernet bus |
| CN105553803A (en) * | 2015-12-10 | 2016-05-04 | 北京新能源汽车股份有限公司 | Method and system for electric vehicle network management |
| CN105553803B (en) * | 2015-12-10 | 2019-04-09 | 北京新能源汽车股份有限公司 | Electrical vehicle network management method and system |
| CN108241361A (en) * | 2017-12-29 | 2018-07-03 | 江苏车和家汽车有限公司 | A kind of vehicle power supply control method, controller and vehicle |
| CN110154937A (en) * | 2018-02-10 | 2019-08-23 | 深圳市北航电子有限公司 | A kind of standby processing circuit of vehicle mounted guidance |
| CN110208591A (en) * | 2019-04-30 | 2019-09-06 | 惠州市德赛西威汽车电子股份有限公司 | A kind of voltage detecting circuit and automobile of low quiescent current |
| CN110208591B (en) * | 2019-04-30 | 2021-07-30 | 惠州市德赛西威汽车电子股份有限公司 | Voltage detection circuit with low quiescent current and automobile |
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