CN201663546U - Multi-power-supply power-up sequence control device and system - Google Patents
Multi-power-supply power-up sequence control device and system Download PDFInfo
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- CN201663546U CN201663546U CN2010201724239U CN201020172423U CN201663546U CN 201663546 U CN201663546 U CN 201663546U CN 2010201724239 U CN2010201724239 U CN 2010201724239U CN 201020172423 U CN201020172423 U CN 201020172423U CN 201663546 U CN201663546 U CN 201663546U
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Abstract
The utility model discloses a multi-power-supply power-up sequence control device which comprises an MOS tube, a three-terminal adjustable-voltage reference chip and resistances, wherein the other end of the resistance R1 connected with the positive pole of a first power-up power supply is respectively connected with the resistance R2 and a reference end of the three-terminal adjustable-voltage reference chip; the other end of the resistance R2 is respectively connected with an anode end of the three-terminal adjustable-voltage reference chip and the negative pole of the first power-up power supply; the other end of the resistance 4, connected with a cathode end of the three-terminal adjustable-voltage reference chip, is respectively connected with a G end of the MOS tube and the resistance R3; the other end of the resistance R3 is connected with an S end of the MOS tube, and a power supply connected with the S end of the MOS tube is an input power supply; and the negative pole of the first power-up power supply and a D end of the MOS tube are respectively connected with a power supply chip. The device has simple and easily controlled structure as well as lower cost, saves a circuit, reduces the design difficulty, and is convenient and practical. The utility model is especially applied to places needing negative power supply power-up sequence control.
Description
Technical field
Utility model relates to power supply control field in the circuit, relates in particular to a kind of many power supply electrifyings order controller.
Background technology
Along with the progress of processing technology and the requirement of low-power consumption, integrated circuit (IC) chip requires low power supply power supply, and power supply is also by single power supply power supply becoming multiple feed simultaneously.And in order to guarantee the chip operate as normal, be unlikely to be burnt, have the electric sequence that meets chip design when requiring multiple feed, therefore need the controlled device of a kind of electric sequence of design, satisfy the chip power requirement.
At present, existing electric sequence controlling schemes is roughly as follows:
First kind of scheme, by control power conversion chip enable bring in control the power supply chip opening time, can be by controlling another power supply electrifying again behind the power supply electrifying, thus the different opening time control electric sequence of many power supplys promptly utilizes the control power source conversion to control the electric sequence of power supply;
Second kind of scheme is the improvement to first kind of scheme, for satisfying the electric sequence requirement through the voltage after the power conversion chip conversion by the RC delay circuit delays supply power voltage rise time;
The third scheme is controlled the power supply electrifying order by power source special control chip control electronic switch.
More than three kinds of schemes, all there is certain limitation, for first kind of scheme, the prerequisite of this scheme implementation is that the voltage of each power supply is converted by power conversion chip, be that first the converting to by different power conversion chips of main power source is powered the various voltages that chip needs, exist but work as each power supply, when not needing veneer to change in advance, this scheme is just powerless; Second kind of scheme, when each power supply is imported when uncertain, resistance and capacitance parameter choose very difficulty, simultaneously, variation of ambient temperature causes capacitance parameter to change, thereby influences the operate as normal of chip; The third scheme, the power source special control chip programmed control electronic switch, but just may there be the electric sequence problem in power source special control chip itself, and before program running, the control end of electronic switch is in indeterminate state, might cause the false triggering switch, moreover this device price is higher, circuit is complicated; And the power source special control chip all is commercial chip, is not suitable for the negative supply power supply, and applicable surface is narrow, and versatility is relatively poor.
The utility model content
Technical problem to be solved in the utility model is, proposes a kind of many power supply electrifyings order controller, the defective that exists when overcoming present many power supplys to same chip power supply.The utility model also proposes a kind of many power supply electrifyings sequence control system, with a plurality of control device cascades, and after a plurality of cascades, the control of the electric sequence of 3 above power supplys of may command.
A kind of many power supply electrifyings order controller that the utility model proposes, comprise metal-oxide-semiconductor, three end adjustable voltage fiducial chip and resistance, the other end of the resistance R 1 that is connected with the positive source that powers on earlier connects the reference edge of resistance R 2 and three end adjustable voltage fiducial chips respectively, the other end of described resistance R 2 is connected with the power cathode that powers on earlier with the anode tap of three end adjustable voltage fiducial chips respectively, the other end of the resistance R 4 that is connected with the cathode terminal of described three end adjustable voltage fiducial chips is connected with resistance R 3 with the G end of metal-oxide-semiconductor respectively, the other end of described resistance R 3 connects the S end of metal-oxide-semiconductor, the power supply that described metal-oxide-semiconductor S end connects is the input power supply, the negative pole of the described power supply that powers on earlier and described metal-oxide-semiconductor D end respectively be powered chip and be connected.
Preferable, in described control device: magnitude of voltage, the reference edge of three end adjustable voltage fiducial chips and the pressure reduction of anode tap according to the positive and negative electrode of the power supply that powers on earlier dispose the value of described resistance R 1 and resistance R 2, thereby make three end adjustable voltage fiducial chip conductings control metal-oxide-semiconductor enable;
The reference edge of described three end adjustable voltage fiducial chips and the pressure reduction of anode tap are not less than the reference voltage of three end adjustable voltage fiducial chips.
Preferable, in described control device, the reference edge of the positive and negative magnitude of voltage of the described power supply that powers on earlier, three end adjustable voltage fiducial chips and pressure reduction, resistance R 1 and the resistance R 2 of anode tap satisfy following relation:
Wherein, U
CRepresent to power on earlier positive source, U '
CRepresent to power on earlier power cathode, U
RARepresent the reference edge of three end adjustable voltage fiducial chips and the pressure reduction U of anode tap
RA
Preferable, in described control device: according to the input power source voltage, power on the magnitude of voltage configuration resistance R 3 and the resistance R 4 of power cathode earlier, make the voltage at metal-oxide-semiconductor G and S two ends satisfy the metal-oxide-semiconductor cut-in voltage, with after the power supply that powers on hold to by the chip power supply that powered on by metal-oxide-semiconductor D.
Preferable, in described control device: the voltage of the power cathode that powers in the ban arrives, the electric current that makes described metal-oxide-semiconductor S end is along resistance R 3, R4 flows through the A end of three end adjustable voltage fiducial chips, in the metal-oxide-semiconductor G utmost point and pressure drop of the extreme formation of S, because the voltage at described metal-oxide-semiconductor G and S two ends is not less than the MOS cut-in voltage, configuration resistance R 3 and R4 dividing potential drop, make the metal-oxide-semiconductor conducting, thereby power on power supply after the input power source voltage can become by MOS, voltage is outputed to by last electrical chip.
Preferable, in described control device, if the power supply that powers on earlier is the positive voltage power supply, the voltage value of described positive source is to go up piezoelectric voltage, power cathode place ground connection earlier;
Power supply is the negative voltage power supply if power on earlier, described positive source place ground connection, and the value of described power cathode is to go up piezoelectric voltage earlier.
The utility model also proposes a kind of many power supply electrifyings sequence control system, comprise plural control device, wherein said control device comprises: metal-oxide-semiconductor, three end adjustable voltage fiducial chip and resistance, the other end of the resistance R 1 that is connected with the positive source that powers on earlier connects the reference edge of resistance R 2 and three end adjustable voltage fiducial chips respectively, the other end of described resistance R 2 is connected with the power cathode that powers on earlier with the anode tap of three end adjustable voltage fiducial chips respectively, the other end of the resistance R 4 that is connected with the cathode terminal of described three end adjustable voltage fiducial chips is connected with resistance R 3 with the G end of metal-oxide-semiconductor respectively, the other end of described resistance R 3 connects the S end of metal-oxide-semiconductor, the power supply that described metal-oxide-semiconductor S end connects is the input power supply, the negative pole of the described power supply that powers on earlier and described metal-oxide-semiconductor D end respectively be powered chip and be connected;
The power cathode that powers on earlier of described control device all connects by last electrical chip, and the power supply that powers on behind the last control device links to each other with the positive source that powers on earlier of back one control device, and the power end that powers on behind last control device connects by last electrical chip.
Preferable, in described control system: in the described control device, magnitude of voltage, the reference edge of three end adjustable voltage fiducial chips and the pressure reduction of anode tap according to the positive and negative electrode of the power supply that powers on earlier dispose the value of described resistance R 1 and resistance R 2, thereby make three end adjustable voltage fiducial chip conductings control metal-oxide-semiconductor enable;
The reference edge of described three end adjustable voltage fiducial chips and the pressure reduction of anode tap are not less than the reference voltage of three end adjustable voltage fiducial chips.
Preferable, in described control system: in the described control device, according to the input power source voltage, power on the magnitude of voltage configuration resistance R 3 and the resistance R 4 of power cathode earlier, make the voltage at metal-oxide-semiconductor G and S two ends satisfy the metal-oxide-semiconductor cut-in voltage, with after the power supply that powers on hold to by the chip power supply that powered on by metal-oxide-semiconductor D.
Preferable, in described control system: in the described control device, if the power supply that powers on earlier is the positive voltage power supply, the voltage value of described positive source is to go up piezoelectric voltage, power cathode place ground connection earlier;
Power supply is the negative voltage power supply if power on earlier, described positive source place ground connection, and the value of described power cathode is to go up piezoelectric voltage earlier.
Adopt device described in the utility model, chip is to the requirement of electric sequence in the time of can effectively satisfying the output of many power supplys, and by configuration voltages, the switch that can satisfy different electrical power voltage is under controlled, and is convenient, flexible.After a plurality of cascades, may command is convenient to design and is used greater than the last electric control of 3 power supplys.Can need satisfy many power supply electrifyings sequence requirement by chip, this utility model selects for use chip simple, and cost is lower, need not do complicated control.Apparatus structure of the present utility model is simple and easy to control simultaneously, and cost is lower, saves circuit and design difficulty, and is convenient and practical.Can be applied to the place of negative supply electric sequence control especially.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with embodiment one of the present utility model, does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 be the utility model embodiment provide 2 power supplys are carried out the structural representation of the device of electric sequence control;
Fig. 2 be the utility model embodiment provide 3 above power supplys are carried out the structural representation of the device of electric sequence control.
Embodiment
As shown in Figure 1, device described in the utility model comprises control unit and metal-oxide-semiconductor onunit, input power supply U
InPower supply U powers on earlier
C-U '
CGo up piezoelectric voltage, the described power supply U that powers on earlier by device output described in the utility model back
C-U '
CWith after the power supply U that powers on
OUTBe connected respectively with by last electrical chip, give described by the chip power supply that powers on.
Described control unit comprises, three end adjustable voltage fiducial chips and attached resistance are with the positive source U that powers on earlier
CThe other end of the resistance R 1 that connects connects the reference edge (R of resistance R 2 and three end adjustable voltage fiducial chips respectively
RefEnd), the other end of resistance R 2 connects the anode tap (A end) of three end adjustable voltage fiducial chips, the cathode terminal of described three end adjustable voltage fiducial chips (K end) is connected with resistance R 4, the other end of resistance R 4 is connected with resistance R 3 with the G end of metal-oxide-semiconductor respectively, the other end of described resistance R 3 connects the S end of metal-oxide-semiconductor, wherein is connected power supply with the anode tap of described three end adjustable voltage fiducial chips and is designated as the power cathode U ' that powers on earlier
C, power supply U powers on after the power supply that is connected with described metal-oxide-semiconductor D end is designated as
Out, the power supply that is connected with described metal-oxide-semiconductor S end is designated as input power supply U
In
When power supply is the positive voltage power supply if power on earlier, described positive source U
CThe voltage value at place is to go up piezoelectric voltage, power cathode U ' earlier
CPlace's ground connection.When power supply is the negative voltage power supply if power on earlier, described positive source U
CPlace's ground connection, described power cathode U '
CValue be to go up earlier piezoelectric voltage (negative value of voltage value herein for powering on earlier at this moment).
With by the supply power voltage of last electrical chip be one positive one negative be example, the operation principle of device described in the utility model is described.Described power supply U
CPlace's ground connection, described power supply U '
CValue be to go up earlier piezoelectric voltage (negative voltage), input power supply U
InValue be that piezoelectric voltage (positive voltage) is gone up in the back.
For guaranteeing at power supply U '
CBack three end adjustable voltage fiducial chip conductings, the therefore reference edge of three end adjustable voltage fiducial chips and the pressure reduction U of anode tap power on
RABe not less than the reference voltage of three end adjustable voltage fiducial chips.According to the power supply U that powers on earlier
C-U '
CAnd U
RAVoltage value reasonable disposition resistance R 1 and the value of R2, specifically determine according to following expression:
According to power supply U
In, U '
CMagnitude of voltage and the cut-in voltage reasonable disposition resistance R 3 of metal-oxide-semiconductor and the resistance of R4, in case the power supply U ' that powers on earlier
CVoltage arrive, the electric current that makes described metal-oxide-semiconductor S end is along resistance R 3, R4 flows through the A end of three end adjustable voltage fiducial chips, forms a pressure drop in that the metal-oxide-semiconductor G utmost point and S are extreme like this, according to the voltage U at G and S two ends
GSBe not less than the MOS cut-in voltage, configuration resistance R 3 and the reasonable dividing potential drop of R4 make the metal-oxide-semiconductor conducting, thus input power supply U
InThe voltage power supply U that powers on after can becoming by MOS
Out, voltage is outputed to by last electrical chip, so far finish the control of electric sequence.
U wherein
GSCan be expressed as: (I
KAExpression is by the electric current at K, A two ends)
U
GS＝I
KA*R3
Below in conjunction with concrete enforcement the enforcement of said apparatus is described, a certain chip power supply power supply be-5.2V and+5V, its electric sequence requirement is-5.2V is prior to+5V.Therefore general-5.2V voltage by each resistance of proportioning, is worked as voltage U as control end
GSBe not less than the MOS cut-in voltage, then metal-oxide-semiconductor conducting, thus general+5V is conducting to the chip place.U '
C=-5.2V, U
In=+5V makes U
C=GND (0V), R1=5.11K, R2=10K, R3=5K, R4=5.2K.When-when 5.2V occurred, by R1, two divider resistances of R2 made U
RAFor-1.76V, greater than three end adjustable voltage fiducial chip reference voltage-2.7V (+2.5-5.2=-2.7V, wherein+2.5V is three end adjustable voltage fiducial chip reference voltages), conducting three end adjustable voltage fiducial chips, because three end adjustable voltage fiducial chip A, K two terminal impedances are very little, therefore the pressure drop at two ends is also very little, electric current I
KAThe R3 that flows through forms pressure drop, metal-oxide-semiconductor U
GSVoltage greater than its cut-in voltage-0.6V, so also conducting of metal-oxide-semiconductor ,+5V voltage offers smoothly by last electrical chip, has finished the control of electric sequence; When-when 5.2V did not have, metal-oxide-semiconductor did not have conducting, then cut off+5V with by being connected of last electrical chip, protected the chip not to be damaged like this.
More than be explanation, after above-mentioned control device cascade, satisfy last electric control more than 3 power supplys to 2 power supply electrifying sequential controls, as shown in Figure 2, U
C1U
Cn, n 〉=3 (value of following n together) are the positive sources that powers on earlier of control device 1...n, U '
C1U '
CnBe the power cathode that powers on earlier of control device 1...n, U
In1U
InnBe the input power supply of input control device 1...n, U
Out1U
OutnPower supply powers on behind the control device 1...n, the power cathode that powers on earlier of all control device all connects by last electrical chip, the power supply that powers on behind the last control device links to each other with the positive source that powers on earlier of back one control device, and power end one end that powers on behind last control device connects by last electrical chip.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (10)
1. power supply electrifying order controller more than a kind, it is characterized in that, comprise metal-oxide-semiconductor, three end adjustable voltage fiducial chip and resistance, the other end of the resistance R 1 that is connected with the positive source that powers on earlier connects the reference edge of resistance R 2 and three end adjustable voltage fiducial chips respectively, the other end of described resistance R 2 is connected with the power cathode that powers on earlier with the anode tap of three end adjustable voltage fiducial chips respectively, the other end of the resistance R 4 that is connected with the cathode terminal of described three end adjustable voltage fiducial chips is connected with resistance R 3 with the G end of metal-oxide-semiconductor respectively, the other end of described resistance R 3 connects the S end of metal-oxide-semiconductor, the power supply that described metal-oxide-semiconductor S end connects is the input power supply, the negative pole of the described power supply that powers on earlier and described metal-oxide-semiconductor D end respectively be powered chip and be connected.
2. control device as claimed in claim 1 is characterized in that:
Magnitude of voltage, the reference edge of three end adjustable voltage fiducial chips and the pressure reduction of anode tap according to the positive and negative electrode of the power supply that powers on earlier dispose the value of described resistance R 1 and resistance R 2, thereby make three end adjustable voltage fiducial chip conductings control metal-oxide-semiconductor enable;
The reference edge of described three end adjustable voltage fiducial chips and the pressure reduction of anode tap are not less than the reference voltage of three end adjustable voltage fiducial chips.
3. control device as claimed in claim 2 is characterized in that:
The reference edge of the positive and negative magnitude of voltage of the described power supply that powers on earlier, three end adjustable voltage fiducial chips and the pressure reduction of anode tap, resistance R 1 and resistance R 2 satisfy following relation:
Wherein, U
CRepresent to power on earlier positive source, U '
CRepresent to power on earlier power cathode, U
RARepresent the reference edge of three end adjustable voltage fiducial chips and the pressure reduction U of anode tap
RA
4. as the described control device of each claim of claim 1-3, it is characterized in that: according to the input power source voltage, power on the magnitude of voltage configuration resistance R 3 and the resistance R 4 of power cathode earlier, make the voltage at metal-oxide-semiconductor G and S two ends satisfy the metal-oxide-semiconductor cut-in voltage, with after the power supply that powers on hold to by the chip power supply that powered on by metal-oxide-semiconductor D.
5. control device as claimed in claim 4, it is characterized in that: the voltage of the power cathode that powers in the ban arrives, the electric current that makes described metal-oxide-semiconductor S end is along resistance R 3, R4 flows through the A end of three end adjustable voltage fiducial chips, in the metal-oxide-semiconductor G utmost point and pressure drop of the extreme formation of S, because the voltage at described metal-oxide-semiconductor G and S two ends is not less than the MOS cut-in voltage, configuration resistance R 3 and R4 dividing potential drop, make the metal-oxide-semiconductor conducting, power on power supply after thereby the input power source voltage can become by MOS, voltage is outputed to by last electrical chip.
6. as control device as described in the claim 4, it is characterized in that:
Power supply is the positive voltage power supply if power on earlier, and the pressure value of described positive source is to go up piezoelectric voltage, power cathode place ground connection earlier;
Power supply is the negative voltage power supply if power on earlier, described positive source place ground connection, and the value of described power cathode is to go up piezoelectric voltage earlier.
7. power supply electrifying sequence control system more than a kind, it is characterized in that, comprise plural control device, wherein said control device comprises: metal-oxide-semiconductor, three end adjustable voltage fiducial chip and resistance, the other end of the resistance R 1 that is connected with the positive source that powers on earlier connects the reference edge of resistance R 2 and three end adjustable voltage fiducial chips respectively, the other end of described resistance R 2 is connected with the power cathode that powers on earlier with the anode tap of three end adjustable voltage fiducial chips respectively, the other end of the resistance R 4 that is connected with the cathode terminal of described three end adjustable voltage fiducial chips is connected with resistance R 3 with the G end of metal-oxide-semiconductor respectively, the other end of described resistance R 3 connects the S end of metal-oxide-semiconductor, the power supply that described metal-oxide-semiconductor S end connects is the input power supply, the negative pole of the described power supply that powers on earlier and described metal-oxide-semiconductor D end respectively be powered chip and be connected;
The power cathode that powers on earlier of described control device all connects by last electrical chip, and the power supply that powers on behind the last control device links to each other with the positive source that powers on earlier of back one control device, and the power end that powers on behind last control device connects by last electrical chip.
8. control system as claimed in claim 7, it is characterized in that: in the described control device, magnitude of voltage, the reference edge of three end adjustable voltage fiducial chips and the pressure reduction of anode tap according to the positive and negative electrode of the power supply that powers on earlier dispose the value of described resistance R 1 and resistance R 2, thereby make three end adjustable voltage fiducial chip conductings control metal-oxide-semiconductor enable;
The reference edge of described three end adjustable voltage fiducial chips and the pressure reduction of anode tap are not less than the reference voltage of three end adjustable voltage fiducial chips.
9. as control system as described in claim 7 or 8, it is characterized in that: in the described control device, according to the input power source voltage, power on the magnitude of voltage configuration resistance R 3 and the resistance R 4 of power cathode earlier, make the voltage at metal-oxide-semiconductor G and S two ends satisfy the metal-oxide-semiconductor cut-in voltage, with after the power supply that powers on hold to by the chip power supply that powered on by metal-oxide-semiconductor D.
10. as control system as described in the claim 9, it is characterized in that: in the described control device, if the power supply that powers on earlier is the positive voltage power supply, the voltage value of described positive source be earlier on piezoelectric voltage, power cathode place ground connection;
Power supply is the negative voltage power supply if power on earlier, described positive source place ground connection, and the value of described power cathode is to go up piezoelectric voltage earlier.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201724239U CN201663546U (en) | 2010-04-23 | 2010-04-23 | Multi-power-supply power-up sequence control device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201724239U CN201663546U (en) | 2010-04-23 | 2010-04-23 | Multi-power-supply power-up sequence control device and system |
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| CN201663546U true CN201663546U (en) | 2010-12-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102880087A (en) * | 2012-10-24 | 2013-01-16 | 杭州华三通信技术有限公司 | Method for controlling power supply and power supply controller |
| WO2013060137A1 (en) * | 2011-10-24 | 2013-05-02 | 中兴通讯股份有限公司 | Apparatus for controlling power-on sequence of multiple power supplies |
| CN103869856A (en) * | 2012-12-11 | 2014-06-18 | 中兴通讯股份有限公司 | Multi-voltage time sequence control circuit |
| CN109901430A (en) * | 2019-03-21 | 2019-06-18 | 青岛海信电子设备股份有限公司 | A kind of control system automatically configuring host function |
-
2010
- 2010-04-23 CN CN2010201724239U patent/CN201663546U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013060137A1 (en) * | 2011-10-24 | 2013-05-02 | 中兴通讯股份有限公司 | Apparatus for controlling power-on sequence of multiple power supplies |
| CN102880087A (en) * | 2012-10-24 | 2013-01-16 | 杭州华三通信技术有限公司 | Method for controlling power supply and power supply controller |
| CN102880087B (en) * | 2012-10-24 | 2017-10-03 | 新华三技术有限公司 | Control the method and power control of power supply |
| CN103869856A (en) * | 2012-12-11 | 2014-06-18 | 中兴通讯股份有限公司 | Multi-voltage time sequence control circuit |
| CN103869856B (en) * | 2012-12-11 | 2015-12-23 | 中兴通讯股份有限公司 | A kind of multivoltage sequential control circuit |
| CN109901430A (en) * | 2019-03-21 | 2019-06-18 | 青岛海信电子设备股份有限公司 | A kind of control system automatically configuring host function |
| CN109901430B (en) * | 2019-03-21 | 2022-03-04 | 青岛海信电子设备股份有限公司 | Control system capable of automatically configuring host functions |
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