CN103365222B - Power sequence control circuit and integrated circuit - Google Patents
Power sequence control circuit and integrated circuit Download PDFInfo
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- CN103365222B CN103365222B CN201210081932.4A CN201210081932A CN103365222B CN 103365222 B CN103365222 B CN 103365222B CN 201210081932 A CN201210081932 A CN 201210081932A CN 103365222 B CN103365222 B CN 103365222B
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Abstract
The invention discloses a power sequence control circuit and an integrated circuit. The power sequence control circuit comprises a power output loop which consists of an input terminal (VCC2) of a post-sequence power supply, a PMOS transistor (VT2), and an output terminal (VCC2-1) of the post-sequence power supply, wherein the post-sequence power supply, the PMOS transistor (VT2) and the output terminal (VCC2-1) of the post-sequence power supply are connected in series. The power sequence control circuit also comprises a power sequence control loop which consists of the input terminal (VCC2) of the post-sequence power supply, a first capacitor (C2), a first resistor (R3), the collector electrode of a first NPN triode (VT1), and the emitter electrode of the first NPN triode (VT1), wherein the input terminal (VCC2) of the post-sequence power supply, the first capacitor (C2), the first resistor (R3), the collector electrode of the first NPN triode (VT1) and the emitter electrode of the first NPN triode (VT1) are connected in series. The base electrode of the first NPN triode (VT1) is connected to the input terminal (VCC1) of a pro-sequence power supply and the gate electrode of the PMOS transistor (VT2) is connected between the first capacitor (C2) and the first resistor (R3). The invention achieves the power sequence control by utilizing a simple discrete device, and the circuits provided by the invention have simple structures and can avoid voltage flowing backwards. Moreover, the cost of the circuits is low.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of power supply sequencing control circuit and integrated circuit.
Background technology
With the development of semiconductor technology, large-scale exchange chip, central processing unit (Central Processing Unit,
Referred to as CPU) the complicated integrated circuit such as chip or system, all the power supply timing to power supply and monitoring propose it is very high will
Ask.At one by CPU, digital signal processor (Digital Signal Processor, referred to as DSP), field-programmable
Gate array (Field Programmable Gate Array, referred to as FPGA) and special IC (Application
Specific Integrated Circuit, referred to as ASIC) etc. in the canonical system of composition, need multiple power sources voltage, with
Just power consumption is reduced while performance is optimized.But, user must be added to these supply voltages on device, and by predetermined suitable
Electricity and power-off in sequence, with anti-tamper device.Above-mentioned power management is realized, many comparators, resistance, electric capacity, timing will be used
Device and logical device, and so just need to devote a tremendous amount of time in design, and the space of circuit board is taken, while also increasing
Circuit cost.
It is general by designing sequence circuit realizing the foundation successively of supply voltage, but can so cause that voltage is counter to be filled, i.e.,
After supply voltage at first is set up, an anti-filling can be produced in the energization pins set up afterwards by the home loop of chip
Voltage, although this voltage energy is less, can produce deleterious effect to the sequential of chip, in addition make original design when
Sequence circuit cannot be brought into normal play effect.
At present to the anti-process for filling voltage, the general method using sequential and conductive discharge is accelerated.Wherein, just accelerate sequential
It is to make the interval time between two voltages setting up one after another as far as possible short, thus can reduces the anti-voltage that fills to greatest extent and deposit
Time, but this method cannot be inherently eliminated and anti-fill voltage；Conductive discharge is exactly to be likely to occur anti-filling voltage
Pin be pre-placed resistance, consumed by resistance it is anti-fill voltage, although this method can reduce or eliminate anti-fills electric
Pressure, but due to the presence of resistance, the own loss of circuit is increased, the efficient and energy-conservation of circuit is all negatively affected.
The content of the invention
The invention provides a kind of power supply sequencing control circuit and integrated circuit, at least to solve in correlation technique, real
The circuit cost of existing chip power sequencing contro is high, and take up room big problem.
According to an aspect of the invention, there is provided a kind of power supply sequencing control circuit, including：By in rear sequential power supply
The power supply output loop that input, PMOS and the outfan in rear sequential power supply are composed in series, wherein, in rear sequential power supply
Input is connected to the source electrode of PMOS, is connected to the drain electrode of PMOS in the outfan of rear sequential power supply；By in rear sequential electricity
The emitter stage series connection of the input in source, the first electric capacity, first resistor, the colelctor electrode of the first NPN triode and the first NPN triode
The power supply sequencing contro loop of composition, wherein, the base stage of the first NPN triode is connected to the input of first sequential power supply,
The grid of PMOS is connected between the first electric capacity and first resistor.
Preferably, the input of first sequential power supply passes through the second capacity earth.
Preferably, the base stage of the first NPN triode is connected to the input of first sequential power supply and includes：First NPN, tri- poles
The base stage of pipe is connected to the input of first sequential power supply by second resistance.
Preferably, the outfan in rear sequential power supply passes through the 3rd capacity earth.
Preferably, above-mentioned power supply sequencing control circuit also includes：3rd resistor, is connected to the input in rear sequential power supply
And first NPN triode colelctor electrode between；NMOS tube, source ground, grid are connected to the colelctor electrode of the first NPN triode,
Drain electrode is connected to the outfan in rear sequential power supply.
Preferably, above-mentioned power supply sequencing control circuit also includes：3rd resistor, is connected to the input in rear sequential power supply
And first NPN triode colelctor electrode between；Second NPN triode, base stage are connected to the colelctor electrode of the first NPN triode, send out
Emitter grounding, colelctor electrode are connected to the outfan in rear sequential power supply.
Preferably, the colelctor electrode of the second NPN triode is connected to the outfan in rear sequential power supply by the 4th resistance.
According to an aspect of the present invention, a kind of power supply sequencing control circuit is additionally provided, including：By in rear sequential power supply
Input, the power supply output loop that is composed in series of the first NMOS tube and the outfan in rear sequential power supply, wherein, in rear sequential
The input of power supply is connected to the drain electrode of the first NMOS tube, is connected to the source of the first NMOS tube in the outfan of rear sequential power supply
Pole；The power supply sequencing contro loop being made up of the input of first sequential power supply, first resistor, the first capacitances in series, wherein, the
The grid of one NMOS tube is connected between first resistor and the first electric capacity.
Preferably, above-mentioned power supply sequencing control circuit also includes：Second NMOS tube, source ground, grid are connected to rear
The input of sequential power supply, drain electrode are connected to the outfan in rear sequential power supply.
Preferably, above-mentioned power supply sequencing control circuit also includes：NPN triode, base stage are connected to first sequential power supply
Input, colelctor electrode are connected to the input in rear sequential power supply, grounded emitter.
According to a further aspect in the invention, there is provided a kind of integrated circuit, including any of the above-described kind of power supply sequencing contro
Circuit.
The present invention realizes the sequencing contro of power supply, circuit shape by simple discrete device using the break-make of metal-oxide-semiconductor
Formula is simple, low cost, and eliminates anti-filling voltage.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structural representation one of power supply sequencing control circuit according to embodiments of the present invention；
Fig. 2 is the concrete structure schematic diagram one of power supply sequencing control circuit according to embodiments of the present invention；
Fig. 3 is the concrete structure schematic diagram two of power supply sequencing control circuit according to embodiments of the present invention；
Fig. 4 is the concrete structure schematic diagram three of power supply sequencing control circuit according to embodiments of the present invention；
Fig. 5 is the structural representation two of power supply sequencing control circuit according to embodiments of the present invention；
Fig. 6 is the concrete structure schematic diagram four of power supply sequencing control circuit according to embodiments of the present invention；
Fig. 7 is the concrete structure schematic diagram five of power supply sequencing control circuit according to embodiments of the present invention；
Fig. 8 is the structural representation of integrated circuit according to embodiments of the present invention；
Fig. 9 is the schematic diagram of power supply sequencing control circuit according to the preferred embodiment of the invention.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combine.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
A kind of power supply sequencing control circuit is embodiments provided, when Fig. 1 is power supply according to embodiments of the present invention
The structural representation one of sequence control circuit, as shown in figure 1, including：
Outfan VCC2-1 by the input VCC2 in rear sequential power supply, PMOS VT2 and in rear sequential power supply connects
The power supply output loop of composition, wherein, the source electrode of PMOS is connected in the input VCC2 of rear sequential power supply, in rear sequential electricity
The outfan VCC2-1 in source is connected to the drain electrode of PMOS；By the input VCC2 in rear sequential power supply, the first electric capacity C2, first
The power supply sequential control that the emitter stage of resistance R3, the colelctor electrode of the first NPN triode VT1 and the first NPN triode VT1 is composed in series
Loop processed, wherein, the base stage of the first NPN triode VT1 is connected to the input VCC1 of first sequential power supply, PMOS VT2
Grid is connected between the first electric capacity C2 and first resistor R3.
In above-described embodiment, when VCC1 does not set up, VT1 is off state；VCC2 is also not set up, and VT2 does not drive
Voltage is also at off state, and now VCC2_1 is without output.When VCC1 voltages are normally set up, VT1 conducting, VCC2 by C2,
R3 and VT1 loops are charged to C2, and after C2 voltages slowly rise to the cut-in voltage of VT2, VT2 conductings, VCC2_1 are normally exported, and are led to
The presence for crossing C2 plays a part of delay startup to VCC2_1, realizes the sequencing contro of VCC2_1 after first VCC1.The present invention passes through
Simple discrete device, using the break-make of metal-oxide-semiconductor, realizes the sequencing contro of power supply, and circuit form is simple, low cost.
In view of the problem of signal interference, in the embodiment of the present invention, the input VCC1 of first sequential power supply is electric by second
Hold C1 ground connection；It is grounded by the 3rd electric capacity C3 in the outfan VCC2-1 of rear sequential power supply, to reach jamming-proof purpose, referring to
Fig. 2.
The base stage of the first NPN triode VT1 can be connected to the input of first sequential power supply by second resistance R1
VCC1, here, R1 plays a part of current limliting, referring to Fig. 2.
Furthermore, it is contemplated that the power supply formerly set up can produce anti-filling voltage in the power pins set up afterwards, so this
The preferred implementation of inventive embodiments provides reed position circuit, for eliminating anti-filling voltage.Referring to Fig. 3, above-mentioned power supply sequential
Control circuit also includes 3rd resistor R2, is connected to the collection of the input VCC2 and the first NPN triode VT1 in rear sequential power supply
Between electrode；NMOS tube VT3, source ground, grid are connected to the colelctor electrode of the first NPN triode VT1, and drain electrode is connected to rear
The outfan VCC2-1 of sequential power supply.In this preferred implementation, pass through 3rd resistor in the input VCC2 of rear sequential power supply
R2 provides driving voltage for NMOS tube VT3, and VT3 conductings eliminate the anti-filling voltage of the outfan VCC2-1 in rear sequential power supply.
As shown in figure 4, eliminating anti-filling voltage, it would however also be possible to employ following manner：Above-mentioned NMOS tube VT3 is replaced with into second
NPN triode VT4, base stage are connected to the colelctor electrode of the first NPN triode VT1, and grounded emitter, colelctor electrode are connected to when rear
The outfan VCC2-1 of sequence power supply.The colelctor electrode of the second NPN triode VT4 can be connected in rear sequential by the 4th resistance R4
The outfan VCC2-1 of power supply, here, R4 plays a part of current limliting.
It should be noted that when VCC1 voltages are normally set up, VT1 conductings, VT3 are turned off, reed due to no drive signal
Position circuit no longer works.I.e. reed position circuit only works when there is anti-filling voltage, and the working time is short, does not increase the extra work(of circuit
Consumption.
Present invention also offers a kind of power supply sequencing control circuit, Fig. 5 is power supply sequential control according to embodiments of the present invention
The structural representation two of circuit processed, as shown in figure 5, including：By the input in rear sequential power supply, the first NMOS tube VT2 and
The power supply output loop that the outfan of sequential power supply is composed in series afterwards, wherein, first is connected in the input of rear sequential power supply
The drain electrode of NMOS tube, is connected to the source electrode of the first NMOS tube in the outfan of rear sequential power supply；By the input of first sequential power supply
End, first resistor, the power supply sequencing contro loop of the first capacitances in series composition, wherein, the grid of the first NMOS tube is connected to the
Between one resistance and the first electric capacity.
In above-described embodiment, when VT2 is NMOSFET, when VCC1 does not set up, VT2 shut-offs.After VCC1 sets up, VCC1
C2 is charged, when cut-in voltage of the C2 both end voltages more than VT2, VT2 conductings, VCC2_1 start output.
Furthermore, it is contemplated that the power supply formerly set up can produce anti-filling voltage in the power pins set up afterwards, so this
The preferred implementation of inventive embodiments provides reed position circuit, for eliminating anti-filling voltage.Referring to Fig. 6, above-mentioned power supply sequential
Control circuit also includes：Second NMOS tube, source ground, grid are connected to the input in rear sequential power supply, and drain electrode is connected to
In the outfan of rear sequential power supply.In this preferred implementation, when VCC1 does not set up, VT2 shut-offs, VT3 conductings eliminate VCC2_1
Anti- filling voltage.
Fig. 7 is the concrete structure schematic diagram five of power supply sequencing control circuit according to embodiments of the present invention, as shown in fig. 7,
Above-mentioned power supply sequencing control circuit also includes：NPN triode, base stage are connected to the input of first sequential power supply, and colelctor electrode connects
It is connected to the input in rear sequential power supply, grounded emitter.
The embodiment of the present invention additionally provides a kind of integrated circuit, including any of the above-described kind of power supply sequencing control circuit, such as
Shown in Fig. 8.Before the power supply sequencing control circuit is described in detail, here is omitted.
From the foregoing, the power supply sequencing control circuit of the present invention mainly opens circuit, anti-filling voltage reed position including power supply
Circuit two parts.Wherein, power supply opens the break-make for mainly passing through controlling switch metal-oxide-semiconductor of circuit, realizes some power supply
Power-on time.The anti-mainly realization for filling voltage reed position circuit is falling behind in the power pins set up to the preferential power supply set up
The reed position of the anti-filling voltage for producing.As shown in figure 9, after VCC1 sets up, opening circuit by power supply makes VCC2 normally export, this
Sample it is ensured that after elder generation VCC1 VCC2 sequential, while the effect of reed position circuit is：In the case that VCC2 is not exported, make
VCC2_1 remains low level, so as to avoid the anti-presence for filling voltage.
In sum, according to the abovementioned embodiments of the present invention, there is provided a kind of power supply sequencing control circuit and integrated electricity
Road.The present invention realizes simple power supply timing management, low cost by little device, it is easy to accomplish；Can be as needed
Adjustment needs to meet the power supply of certain sequential, and motility is good.In addition, realize reed position to the anti-filling voltage of power pins, prevent by
The abnormal even damage chip of chip functions that voltage is caused is filled in anti-；And anti-filling voltage reed position circuit work only when there is anti-filling voltage
Make, the working time is short, does not increase the extra power consumption of circuit.
Obviously, those skilled in the art should be understood that each module or each step of the above-mentioned present invention can be with general
Computing device realizing, they can be concentrated on single computing device, or are distributed in multiple computing devices and are constituted
Network on, alternatively, they can be realized with the executable program code of computing device, it is thus possible to they are stored
In the storage device by computing device performing, or they are fabricated to each integrated circuit modules respectively, or by they
In multiple modules or step be fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific
Hardware and software is combined.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of power supply sequencing control circuit, it is characterised in that include：
By the input (VCC2) in rear sequential power supply, PMOS (VT2) and the outfan (VCC2- in rear sequential power supply
1) the power supply output loop being composed in series, wherein, the input (VCC2) in rear sequential power supply is connected to the PMOS
(VT2) source electrode, the outfan (VCC2-1) in rear sequential power supply are connected to the drain electrode of the PMOS；
By the input (VCC2) in rear sequential power supply, the first electric capacity (C2), first resistor (R3), the first NPN triode
(VT1) the power supply sequencing contro loop that colelctor electrode and the emitter stage of first NPN triode (VT1) is composed in series, wherein,
The base stage of first NPN triode (VT1) is connected to the input (VCC1) of first sequential power supply, the PMOS (VT2)
Grid be connected between first electric capacity (C2) and the first resistor (R3), wherein, the first sequential power supply it is defeated
Enter end (VCC1) to be grounded by the second electric capacity (C1).
2. power supply sequencing control circuit according to claim 1, it is characterised in that first NPN triode (VT1)
Base stage is connected to the input (VCC1) of first sequential power supply to be included：The base stage of first NPN triode (VT1) passes through second
Resistance (R1) is connected to the input (VCC1) of first sequential power supply.
3. power supply sequencing control circuit according to claim 1, it is characterised in that the outfan in rear sequential power supply
(VCC2-1) it is grounded by the 3rd electric capacity (C3).
4. power supply sequencing control circuit according to any one of claim 1 to 3, it is characterised in that also include：
3rd resistor (R2), is connected to the input (VCC2) and first NPN triode (VT1) in rear sequential power supply
Colelctor electrode between；
NMOS tube (VT3), source ground, grid are connected to the colelctor electrode of first NPN triode (VT1), and drain electrode is connected to
The outfan (VCC2-1) in rear sequential power supply.
5. power supply sequencing control circuit according to any one of claim 1 to 3, it is characterised in that the power supply sequential
Control circuit also includes：
3rd resistor (R2), is connected to the input (VCC2) and first NPN triode (VT1) in rear sequential power supply
Colelctor electrode between；
Second NPN triode (VT4), base stage are connected to the colelctor electrode of first NPN triode (VT1), grounded emitter, collection
Electrode is connected to the outfan (VCC2-1) in rear sequential power supply.
6. power supply sequencing control circuit according to claim 5, it is characterised in that second NPN triode (VT4)
Colelctor electrode is connected to the outfan (VCC2-1) in rear sequential power supply by the 4th resistance (R4).
7. a kind of power supply sequencing control circuit, it is characterised in that include：
By the input (VCC2) in rear sequential power supply, the first NMOS tube (VT2) and the outfan in rear sequential power supply
(VCC2-1) the power supply output loop being composed in series, wherein, the input (VCC2) in rear sequential power supply is connected to described
The drain electrode of the first NMOS tube (VT2), the outfan (VCC2-1) in rear sequential power supply are connected to first NMOS tube
(VT2) source electrode；
The power supply sequential being composed in series by the input (VCC1) of first sequential power supply, first resistor (R1), the first electric capacity (C2)
Control loop, wherein, the grid of first NMOS tube (VT2) is connected to the first resistor (R1) and first electric capacity
(C2) between, wherein, the input (VCC1) of the first sequential power supply is grounded by the second electric capacity (C1).
8. power supply sequencing control circuit according to claim 7, it is characterised in that also include：Second NMOS tube (VT3),
Source ground, grid are connected to the input (VCC2) in rear sequential power supply, and drain electrode is connected to described in rear sequential power supply
Outfan (VCC2-1).
9. power supply sequencing control circuit according to claim 8, it is characterised in that also include：First NPN triode
(VT1), base stage is connected to the input (VCC1) of the first sequential power supply, and colelctor electrode is connected to described in rear sequential power supply
Input (VCC2), grounded emitter.
10. a kind of integrated circuit, it is characterised in that including the power supply sequencing control circuit any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210081932.4A CN103365222B (en) | 2012-03-26 | 2012-03-26 | Power sequence control circuit and integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210081932.4A CN103365222B (en) | 2012-03-26 | 2012-03-26 | Power sequence control circuit and integrated circuit |
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| CN103365222A CN103365222A (en) | 2013-10-23 |
| CN103365222B true CN103365222B (en) | 2017-04-12 |
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| CN201210081932.4A Active CN103365222B (en) | 2012-03-26 | 2012-03-26 | Power sequence control circuit and integrated circuit |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443146A (en) * | 2016-09-12 | 2017-02-22 | 浙江中控技术股份有限公司 | Master-slave system fault detection and processing system |
| CN109215562A (en) * | 2018-11-23 | 2019-01-15 | 京东方科技集团股份有限公司 | A kind of display driver circuit and display driving method |
| CN111400985B (en) * | 2020-03-06 | 2022-06-03 | 苏州浪潮智能科技有限公司 | Time sequence control circuit applied to integrated circuit and server board card |
| CN115314451B (en) * | 2022-08-23 | 2023-06-06 | 中国电子科技集团公司第十研究所 | Method for treating insufficient power-down caused by current backflow of domestic SRIO exchange chip |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2565203Y (en) * | 2002-03-12 | 2003-08-06 | 华为技术有限公司 | Circuir for controlling electric sequence on multi-channel power |
| CN201222720Y (en) * | 2008-07-08 | 2009-04-15 | 深圳市同洲电子股份有限公司 | Control circuit for electrification sequence |
| CN101414210A (en) * | 2007-10-19 | 2009-04-22 | 鸿富锦精密工业（深圳）有限公司 | Power supply adapter circuit |
| CN101963792A (en) * | 2010-10-29 | 2011-02-02 | 珠海市鑫和电器有限公司 | Time sequence control circuit and control method thereof |
| CN201918946U (en) * | 2010-12-27 | 2011-08-03 | 东南大学 | Capacitor bootstrapping type drive circuit of switched reluctance motor |
| CN202076999U (en) * | 2011-04-28 | 2011-12-14 | 惠州Tcl移动通信有限公司 | Power control management circuit |
-
2012
- 2012-03-26 CN CN201210081932.4A patent/CN103365222B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2565203Y (en) * | 2002-03-12 | 2003-08-06 | 华为技术有限公司 | Circuir for controlling electric sequence on multi-channel power |
| CN101414210A (en) * | 2007-10-19 | 2009-04-22 | 鸿富锦精密工业（深圳）有限公司 | Power supply adapter circuit |
| CN201222720Y (en) * | 2008-07-08 | 2009-04-15 | 深圳市同洲电子股份有限公司 | Control circuit for electrification sequence |
| CN101963792A (en) * | 2010-10-29 | 2011-02-02 | 珠海市鑫和电器有限公司 | Time sequence control circuit and control method thereof |
| CN201918946U (en) * | 2010-12-27 | 2011-08-03 | 东南大学 | Capacitor bootstrapping type drive circuit of switched reluctance motor |
| CN202076999U (en) * | 2011-04-28 | 2011-12-14 | 惠州Tcl移动通信有限公司 | Power control management circuit |
Non-Patent Citations (3)
| Title |
|---|
| 电源时序管理和电源电压监控管理芯片;洪琳;《今日电子》;20050930;第9卷;46-48 * |
| 衬底防反灌电路的设计;王智鹏等;《电子工程师》;20081231;第34卷(第12期);14-16 * |
| 通信系统电路单板电源缓启动的设计;王浩;《应用科技》;20110331;第38卷(第3期);38-41 * |
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