CN201345044Y - Power source control circuit - Google Patents
Power source control circuit Download PDFInfo
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- CN201345044Y CN201345044Y CNU2008202354674U CN200820235467U CN201345044Y CN 201345044 Y CN201345044 Y CN 201345044Y CN U2008202354674 U CNU2008202354674 U CN U2008202354674U CN 200820235467 U CN200820235467 U CN 200820235467U CN 201345044 Y CN201345044 Y CN 201345044Y
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Abstract
本实用新型提供的电源控制电路包括唤醒电路、保护电路、或门电路以及电源模块电路，所述唤醒电路的输入端接外部唤醒信号，其输出端连接至保护电路的输入端；所述保护电路的输出端连接至或门电路的输入端；所述或门电路的第一输出端连接至控制单元7的至少一个I/O接口，第二输出端连接至所述电源模块电路的第一输入端；所述电源模块电路的第一输出端连接至控制单元的电源输入端。本实用新型通过设置唤醒电路，利用外部唤醒信号唤醒电源模块电路以及控制单元，一定程度上降低了系统的功耗，并且，本实用新型包含的保护电路设置在唤醒电路与或门电路之间，从而可以保护所述控制单元和所述电源模块电路中的电源芯片，使得可靠性得到了保障。
The power supply control circuit provided by the utility model includes a wake-up circuit, a protection circuit, an OR gate circuit and a power supply module circuit, the input terminal of the wake-up circuit is connected to an external wake-up signal, and its output terminal is connected to the input terminal of the protection circuit; the protection circuit The output end of the OR gate circuit is connected to the input end of the OR gate circuit; the first output end of the OR gate circuit is connected to at least one I/O interface of the control unit 7, and the second output end is connected to the first input of the power module circuit end; the first output end of the power module circuit is connected to the power input end of the control unit. The utility model reduces the power consumption of the system to a certain extent by setting the wake-up circuit and using the external wake-up signal to wake up the power supply module circuit and the control unit, and the protection circuit included in the utility model is set between the wake-up circuit and the OR gate circuit, Therefore, the control unit and the power chip in the power module circuit can be protected, so that the reliability is guaranteed.
Description
Technical field
The utility model relates to power control circuit, relates in particular to a kind of automobile-used power control circuit.
Background technology
Along with power control circuit module science and technology is more and more ripe, for example be applied to the power control circuit on the automobile, present design for these circuit, no longer only be confined to the consideration on the circuit power consumption, also concentrate in the optimization of power control circuit simultaneously, therefore how to make power control circuit reach lowest power consumption and realize that the optimization configuration just becomes one and needs the problem that solves.In addition; the holding circuit of automobile power source control circuit has in the past only been protected a part of equipment, for example only protected control module, and other a part of circuit or equipment has perfect shelter not; attend to one thing and lose sight of another thus, can make the overall performance of this power control circuit can not get ensureing.
The utility model content
Given this, the utility model provides a kind of effectively power control circuit of each module of holding circuit.
A kind of power control circuit that the utility model provides is characterized in that, described power control circuit comprises: wake-up circuit, holding circuit, OR circuit and power module circuitry, wherein,
Wake-up circuit, the outside wake-up signal of its input termination, its output terminal is connected to the input end of holding circuit;
Holding circuit, its output terminal is connected to the input end of OR circuit;
OR circuit, its first output terminal are connected at least one I/O interface of control module, and second output terminal is connected to the first input end of described power module circuitry;
Power module circuitry, first output terminal of described power module circuitry is connected to the power input of control module.
The utility model is by being provided with wake-up circuit; utilize outside wake-up signal; for example ON shelves signal, charging signals etc.; when described outside wake-up signal has the time spent; wake power module circuitry and control module up; thereby to a certain extent; can reduce the power consumption of system; and; the holding circuit that the utility model comprises is arranged between wake-up circuit and the OR circuit; then described holding circuit has also been protected the chip in the described power module circuitry in the described control module of protection, make reliability of the present utility model further be improved.
For making the purpose of this utility model, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the electrical block diagram of a kind of embodiment of the utility model.
Embodiment
Below, with reference to accompanying drawing and embodiment, scheme of the present utility model is done a detailed introduction.
With reference to Fig. 1, the power control circuit that the utility model provides comprises: wake-up circuit 2, holding circuit 3, OR circuit 4 and power module circuitry 5, wherein, the outside wake-up signal of the input termination of described wake-up circuit 2, its output terminal is connected to the input end of holding circuit 3; The output terminal of described holding circuit 3 is connected to the input end of OR circuit 4; First output terminal of described OR circuit 4 is connected at least one I/O interface of control module 7, and second output terminal is connected to the first input end of described power module circuitry 5; First output terminal of described power module circuitry 5 is connected to the power input of control module 7.
Among a kind of embodiment of the present utility model, described power control circuit also comprises direct supply 1, and the output terminal end of described direct supply 1 is connected to second input end of described power module circuitry 5, in order to provide direct current to it.Under the preferable case, the DC voltage of described direct supply 1 output 12V, described direct supply 1 can provide galvanic electric power storage or electric conversion equipment for any, for example is accumulator.
The direct current of described direct supply 1 output generally need be through the step of a voltage protection; therefore; in a kind of embodiment that the utility model provides, between second input end of the output terminal of described direct supply 1 and power module circuitry 5, also include a protection circuit 9.As Fig. 2, described protection circuit 9 comprises pull down resistor R1, and diode D1 and D2, the end of described pull down resistor R1 is connected to the output terminal of direct supply 1 and is connected with the anode of described diode D1 simultaneously, the other end ground connection of described pull down resistor R1, the negative electrode of described diode D1 are connected to the negative electrode of described diode D2 and finally are connected to second input end of described power module circuitry 5, the plus earth of described diode D2, thus, constituted a simple protection circuit 9.
In actual applications; for example when the power control circuit that the utility model is provided is applied on the automobile; described outside wake-up signal can be in ON shelves signal, charging signals or the crisis alerting signal at least a; described outside wake-up signal can also selectively increase and decrease as the case may be, and not only only is defined in above said several situations.As long as when there being one of them signal to do the time spent, this power control circuit can wake up for the control module 7 of dormant state and power module circuitry 5.
Referring to Fig. 2, among the embodiment of a kind of power control circuit that the utility model provides, described outside wake-up signal comprises 0N shelves signal and charging signals.When described ON shelves signal and one of them any signal of charging signals are effective, can both wake power supply chip and control module 7 (MCU) in the power module circuitry 5 up, and wake control module 7 (MCU) self check up.For this reason; the holding circuit 3 that the utility model provides is also protected respectively 0N shelves signal and the charging signals imported respectively; its described first resistance can be R4 or R8 respectively; described second resistance can be R5 or R9 respectively; described the 3rd resistance can be R6 or R10 respectively; described surge diode can be surge diode D3 or surge diode D6 respectively; described first electric capacity can be capacitor C 13 or capacitor C 16 respectively; for the holding circuit under the different situations 3, be described in detail as follows:
For ON shelves signal is inputed to the holding circuit 3 that this control circuit carries out voltage protection; comprise following components and parts; comprise resistance R 4; R5; R6; surge diode D3 and capacitor C 13; one end of described resistance R 4 and resistance R 5 is connected to the output terminal of described wake-up circuit 2 jointly; promptly accept the input signal of described OM signal; the negative electrode of the other end of described resistance R 4 and described surge diode D3; one end of described resistance R 6 and an end of described capacitor C 13 connect; the other end common ground of the other end of described resistance R 5 and resistance R 6; the plus earth of described surge diode D3, the other end ground connection of described capacitor C 13.
For charging signals being inputed to the holding circuit 3 that this control circuit carries out voltage protection; comprise following components and parts; comprise resistance R 8; R9; R10; surge diode D6 and capacitor C 16; one section output terminal that is connected to described wake-up circuit 2 jointly of described resistance R 8 and resistance R 9; promptly accept the input signal of described charging signals; the negative electrode of the other end of described resistance R 8 and described surge diode D6; one end of described resistance R 10 and an end of described capacitor C 16 connect; the other end common ground of the other end of described resistance R 9 and resistance R 10; the plus earth of described surge diode D6, the other end ground connection of described capacitor C 16.
OR circuit 4 described in the utility model; comprise first diode; second diode and second electric capacity; the anode of described first diode and second diode is connected to the output terminal of described holding circuit 3; the negative electrode of described first diode is connected to the first input end of described power module circuitry 5; the negative electrode of described second diode is connected to an end of described second electric capacity and is connected to an I/O interface of control module 7, the other end ground connection of described second electric capacity.
Among a kind of embodiment of the present utility model, input for different wake-up signals, need respectively to be undertaken or logical process by the OR circuit 4 of correspondence, in the present embodiment, described outside wake-up signal is ON shelves signal and charging signals, therefore the OR circuit 4 of now respectively described two kinds of wake-up signals being carried out logical process is introduced, wherein, described first diode can be diode D4 or diode D7 respectively, described second diode can be respectively diode D5 or diode D9, described second electric capacity can be respectively capacitor C 15 or capacitor C 17, and it is described below:
That input to this control circuit for ON shelves signal or logical process; described OR circuit 4 comprises diode D4; diode D5 and capacitor C 15; the anode of described diode D4 and diode D5 is connected to the described output terminal of described ON shelves signal being protected the holding circuit 3 of processing; it is the negative electrode of described surge diode D3; the negative electrode of described diode D4 is connected to the first input end of described power module circuitry 5; the negative electrode of described diode D5 is connected to an end of described capacitor C 15 and is connected to an I/O interface of control module 7, the other end ground connection of described capacitor C 15.
That input to this control circuit for charging signals or logical process; described OR circuit 4 comprises diode D7; diode D7 and capacitor C 17; the anode of described diode D7 and diode D9 is connected to the described output terminal of described charging signals being protected the holding circuit 3 of processing; it is the negative electrode of described surge diode D6; the negative electrode of described diode D7 is connected to the first input end of described power module circuitry 5; the negative electrode of described diode D9 is connected to an end of described capacitor C 17 and is connected to an I/O interface of control module 7, the other end ground connection of described capacitor C 17.
Among a kind of embodiment of the present utility model, input for different wake-up signals, need respectively to handle by the power module circuitry 5 of correspondence, in the present embodiment, described outside wake-up signal is ON shelves signal and charging signals, and therefore the power module circuitry of now respectively described two kinds of wake-up signals being handled 5 is introduced.Wherein, described first filter capacitor can be distinguished filter capacitor C1 or filter capacitor C2, described second filter capacitor can be respectively filter capacitor C3 or filter capacitor C4, described the 3rd filter capacitor can be respectively filter capacitor C5 or filter capacitor C6, described the 4th filter capacitor can be respectively filter capacitor C11 or filter capacitor C12, described high-frequency filter capacitor can be respectively high-frequency filter capacitor C7 or high-frequency filter capacitor C8, described low frequency filtering electric capacity can be respectively low frequency filtering capacitor C 9 or low frequency filtering capacitor C 10, described resistance can be respectively resistance R 2 or resistance R 3, described power supply chip can be respectively power supply chip U1 or power supply chip U2, wherein, specifically be described below:
As shown in Figure 2; described power module circuitry 5 is corresponding to different outside wake-up signals; having independently, power module circuitry 5 adapts with it; but be to be understood that; present embodiment only is wherein a kind of embodiment of the present utility model, and those skilled in the art is not difficult to expect, for the processing of the outside wake-up signal of difference; the real-time mode that can be handled by same power module circuitry 5, it is also included within the utility model scope required for protection.
Get back to Fig. 2, for outside wake-up signal is the situation that ON shelves signal inputs to this control circuit, corresponding with it described power module circuitry 5 comprises filter capacitor C1, filter capacitor C3, filter capacitor C5, filter capacitor C11, high-frequency filter capacitor C7, low frequency filtering capacitor C 9, resistance R 2 and power supply chip U1, selection for power supply chip U1 has not limited, can independently select according to different situations during enforcement, in the present embodiment, described power supply chip U1 is preferably the TLE4276 power supply chip module of company of Infineon.
Described filter capacitor C1 is in parallel with filter capacitor C3, the one common ends is connected to 1 pin of power supply chip TLE4276, its another common ends ground connection, one end of described resistance R 2 with to described ON shelves wake-up signal being carried out or second output terminal of the OR circuit 4 of logical process is connected, the other end is connected to the INH end of power supply chip TLE4276 and is connected with the end of filter capacitor C5, the other end ground connection of described filter capacitor C5, the GND pin of described power supply chip TLE4276 is connected with ground, the N.C pin is unsettled, Q pin and the described high-frequency filter capacitor C7 that is connected in parallel, the end of low frequency filtering capacitor C 9 and filter capacitor C11 connects, the high-frequency filter capacitor C7 of described parallel connection, the other end ground connection of low frequency filtering capacitor C 9 and filter capacitor C11.
In like manner, for outside wake-up signal is the situation that charging signals inputs to this control circuit, corresponding with it described power module circuitry 5 comprises filter capacitor C2, filter capacitor C4, filter capacitor C6, filter capacitor C12, high-frequency filter capacitor C8, low frequency filtering capacitor C 10, resistance R 3 and power supply chip U2, in the present embodiment, described power supply chip U2 is preferably the TLE4276 power supply chip module of company of Infineon equally.
Described filter capacitor C2 is in parallel with filter capacitor C4, the one common ends is connected to 1 pin of power supply chip TLE4276, its another common ends ground connection, one end of described resistance R 3 with to described charging wake-up signal being carried out or the output terminal of the OR circuit 4 of logical process is connected, the other end is connected to the INH end of power supply chip TLE4276 and is connected with the end of filter capacitor C6, the other end ground connection of described filter capacitor C6, the GND pin of described power supply chip TLE4276 is connected with ground, the N.C pin is unsettled, Q pin and the described high-frequency filter capacitor C8 that is connected in parallel, the end of low frequency filtering capacitor C 10 and filter capacitor C12 connects, the high-frequency filter capacitor C8 of described parallel connection, the other end ground connection of low frequency filtering capacitor C 10 and filter capacitor C12.
Described power control circuit also comprises power supply latching circuit 8, and described power supply latching circuit 8 is used for providing and keeping the voltage that described power module circuitry 5 works on after described outside wake-up signal is finished described power control circuit effect.Described power supply latching circuit 8 comprises diode, and the anode of described diode is connected to the I/O mouth of control module 7, and negative electrode is connected to second output terminal of described OR circuit 4.Among the embodiment that the utility model provides, comprise diode D8, the anode of described diode D8 is connected to the I/O mouth of control module 7, and negative electrode is connected to second output terminal of described OR circuit 4.
Below, the principle of work of the power control circuit that provides with regard to the utility model is done simple an introduction, and is as follows:
When outside wake-up signal inputs to this control circuit; when for example automobile ON shelves signal is imported; described ON shelves signal is after holding circuit 3 is handled; need again to handle through described OR circuit 4, the diode D4 conducting in this moment described OR circuit 4, thus wake power supply chip in the described power module circuitry 5 up; and then control its operate as normal; simultaneously, and the conducting by the diode D5 in the OR circuit 4, wake control module 7 up and start working.The power supply of total system and other power apparatus all is controlled by the effect of wake-up signal like this.Behind the outside wake-up signal of input, ON shelves signal no longer continues to keep at this moment input, just be equivalent to no longer include the wake-up signal input, and at this moment control module 7 has been started working, and voltage output is arranged during control module 7 work, by the confucian orthodoxy effect of the diode D8 between the I/O interface of OR circuit 4 and control module 7, make the some specific I/O mouth of control module 7 can be connected to the I NH control end of power supply chip, power supply chip is worked on, realized the auto-lock function of power supply.
Under the general applicable cases, when for example being applied to power control circuit of the present utility model on the automobile, this control circuit also comprises the CAN module, second output terminal of the described power module circuitry 5 of input termination of described CAN module.When described outside wake-up signal inputs to this control circuit, thereby wake up after the power supply chip and control module 7 in the described power module circuitry 5, second output terminal of described power module circuitry 5, the Q end that also is power supply chip is connected to the input end of described CAN module, thereby reaches the purpose of waking the work of CAN module up.
The utility model is by being provided with wake-up circuit 2; utilize outside wake-up signal; for example ON shelves signal, charging signals etc.; when described outside wake-up signal has the time spent; wake power module circuitry 5 and control module 7 up; thereby to a certain extent; can reduce the power consumption of system; and; the holding circuit 3 that the utility model comprises is arranged between wake-up circuit 2 and the OR circuit 4; then described holding circuit 3 has also been protected the chip in the described power module circuitry 5 in the described control module 7 of protection, make reliability of the present utility model further be improved.
Above act is preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle; any modification of being done, be equal to replacement, improvement etc.; all should be included within the protection domain of the present utility model; the interest field that the utility model is advocated should be as the criterion so that the utility model application scope is described, but not only limits to the foregoing description.
Claims (10)
1, a kind of power control circuit is characterized in that, described power control circuit comprises: wake-up circuit, holding circuit, OR circuit and power module circuitry, wherein,
Wake-up circuit, the outside wake-up signal of its input termination, its output terminal is connected to the input end of holding circuit;
Holding circuit, its output terminal is connected to the input end of OR circuit;
OR circuit, its first output terminal are connected at least one I/O interface of control module, and second output terminal is connected to the first input end of described power module circuitry;
Power module circuitry, first output terminal of described power module circuitry is connected to the power input of control module.
2, power control circuit according to claim 1 is characterized in that, also comprises direct supply, and the output terminal end of described direct supply is connected to second input end of described power module circuitry, in order to provide direct current to it.
3, power control circuit according to claim 1 is characterized in that, also comprises the CAN module, second output terminal of the described power module circuitry of input termination of described CAN module.
4, power control circuit according to claim 1 is characterized in that, described outside wake-up signal comprises at least a in ON shelves signal, charging signals or the crisis alerting signal.
5, power control circuit according to claim 1, it is characterized in that, described power control circuit also comprises the power supply latching circuit, described power supply latching circuit is used for providing and keeping the voltage that described power module circuitry works on after described outside wake-up signal is finished described power control circuit effect.
6, power control circuit according to claim 5 is characterized in that, described power supply latching circuit comprises diode D8, and the anode of described diode D8 is connected to the I/O mouth of control module, and negative electrode is connected to second output terminal of described OR circuit.
7, power control circuit according to claim 2, it is characterized in that, also comprise protection circuit, the input end of described protection circuit is connected to the output terminal of described direct supply, second input end of the output terminal of described protection circuit and described power module circuitry.
8; power control circuit according to claim 1; it is characterized in that; described holding circuit comprises: first resistance; second resistance; the 3rd resistance; the surge diode and first electric capacity; one end of described first resistance and an end of second resistance are connected to the input end of wake-up circuit jointly; the negative electrode of the other end of described first resistance and described surge diode; one end of described the 3rd resistance and an end of described first electric capacity are connected to the input end of OR circuit jointly; the other end common ground of described second resistance and the 3rd resistance; the plus earth of described surge diode, the other end of described first electric capacity is ground connection also.
9, power control circuit according to claim 1; it is characterized in that; described OR circuit comprises: first diode; second diode and second electric capacity; the anode of described first diode and second diode is connected to the output terminal of described holding circuit; the negative electrode of described first diode is connected to the first input end of described power module circuitry; the negative electrode of described second diode is connected to an end of described second electric capacity and is connected to an I/O interface of control module, the other end ground connection of described second electric capacity.
10, power control circuit according to claim 1, it is characterized in that, described power module circuitry comprises: first filter capacitor, second filter capacitor, the 3rd filter capacitor, the 4th filter capacitor, high-frequency filter capacitor, low frequency filtering electric capacity, resistance and power supply chip, described first filter capacitor is in parallel with second filter capacitor, the one common ends is connected to 1 pin of power supply chip, another common ends ground connection, one end of described resistance is connected with second output terminal of described OR circuit, the other end is connected to the INH end of power supply chip and is connected with an end of the 3rd filter capacitor, the other end ground connection of described the 3rd filter capacitor, the GND pin of described power supply chip is connected with ground, the N.C pin is unsettled, Q pin and the described high-frequency filter capacitor that is connected in parallel, one end of low frequency filtering electric capacity and the 4th filter capacitor connects, the high-frequency filter capacitor of described parallel connection, the other end ground connection of low frequency filtering electric capacity and the 3rd filter capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202354674U CN201345044Y (en) | 2008-12-19 | 2008-12-19 | Power source control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202354674U CN201345044Y (en) | 2008-12-19 | 2008-12-19 | Power source control circuit |
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| CN201345044Y true CN201345044Y (en) | 2009-11-11 |
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| CNU2008202354674U Expired - Lifetime CN201345044Y (en) | 2008-12-19 | 2008-12-19 | Power source control circuit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751750A (en) * | 2011-04-21 | 2012-10-24 | 李尔公司 | Proximity detection circuit for on-board vehicle charger |
| CN102981489A (en) * | 2012-12-04 | 2013-03-20 | 北京汽车股份有限公司 | Device and method for waking up automobile CAN (Controller Area Network) bus as well as vehicle |
| CN103107567A (en) * | 2011-11-10 | 2013-05-15 | 李尔公司 | Control pilot detection circuit |
| CN103475072A (en) * | 2012-05-31 | 2013-12-25 | 李尔公司 | Wake-by-control pilot circuit for onboard battery charger |
| US9211798B2 (en) | 2011-07-28 | 2015-12-15 | Lear Corporation | Multistage power supply system and method for providing uninterrupted power to vehicle circuitry |
| US9233611B2 (en) | 2011-11-10 | 2016-01-12 | Lear Corporation | Proximity detection circuit having short protection |
| US9440538B2 (en) | 2011-11-11 | 2016-09-13 | Lear Corporation | Housekeeping circuit having trickle charge capabilities |
-
2008
- 2008-12-19 CN CNU2008202354674U patent/CN201345044Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751750A (en) * | 2011-04-21 | 2012-10-24 | 李尔公司 | Proximity detection circuit for on-board vehicle charger |
| US9399402B2 (en) | 2011-04-21 | 2016-07-26 | Lear Corporation | Proximity detection circuit for on-board vehicle charger |
| US9211798B2 (en) | 2011-07-28 | 2015-12-15 | Lear Corporation | Multistage power supply system and method for providing uninterrupted power to vehicle circuitry |
| CN103107567A (en) * | 2011-11-10 | 2013-05-15 | 李尔公司 | Control pilot detection circuit |
| CN103107567B (en) * | 2011-11-10 | 2015-06-03 | 李尔公司 | Control pilot detection circuit |
| US9233611B2 (en) | 2011-11-10 | 2016-01-12 | Lear Corporation | Proximity detection circuit having short protection |
| US9440538B2 (en) | 2011-11-11 | 2016-09-13 | Lear Corporation | Housekeeping circuit having trickle charge capabilities |
| CN103475072A (en) * | 2012-05-31 | 2013-12-25 | 李尔公司 | Wake-by-control pilot circuit for onboard battery charger |
| US9333864B2 (en) | 2012-05-31 | 2016-05-10 | Lear Corporation | Wake-by-control pilot circuit for onboard battery charger |
| CN103475072B (en) * | 2012-05-31 | 2017-04-26 | 李尔公司 | Wake-by-control pilot circuit for onboard battery charger |
| CN102981489A (en) * | 2012-12-04 | 2013-03-20 | 北京汽车股份有限公司 | Device and method for waking up automobile CAN (Controller Area Network) bus as well as vehicle |
| CN102981489B (en) * | 2012-12-04 | 2014-09-17 | 北京汽车股份有限公司 | Device and method for waking up automobile CAN (Controller Area Network) bus as well as vehicle |
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