CN107993689A - A kind of voltage-dividing detection circuit for reducing power consumption - Google Patents
A kind of voltage-dividing detection circuit for reducing power consumption Download PDFInfo
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- CN107993689A CN107993689A CN201711330773.6A CN201711330773A CN107993689A CN 107993689 A CN107993689 A CN 107993689A CN 201711330773 A CN201711330773 A CN 201711330773A CN 107993689 A CN107993689 A CN 107993689A
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- circuit
- voltage
- partial pressure
- capacitance partial
- power consumption
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/06—Auxiliary circuits, e.g. for writing into memory
- G11C16/30—Power supply circuits
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- Semiconductor Integrated Circuits (AREA)
Abstract
The present invention proposes a kind of voltage-dividing detection circuit for reducing power consumption, including：Resistor voltage divider circuit and capacitance partial pressure circuit, resistor voltage divider circuit and the capacitance partial pressure circuit in parallel is connected to charge pump, wherein described resistor voltage divider circuit is connected with voltage control circuit, the capacitance partial pressure circuit is connected with switching signal circuit, the resistor voltage divider circuit exports the first branch pressure voltage, second branch pressure voltage of capacitance partial pressure circuit output, controlled by the switching signal circuit and be equal to first branch pressure voltage to capacitance charging second branch pressure voltage, and the second branch pressure voltage is maintained by the capacitance partial pressure circuit.The present invention maintains partial pressure by using capacitance partial pressure circuit, the power consumption of charge pump circuit when programming to reduce and is erasable.Charge pump circuit can be switched to low-power consumption mode by the voltage-dividing detection circuit according to programming control signal, which realizes and different partial pressures is produced when programming erasable operation, and then reduce area by multiplexing.
Description
Technical field
The present invention relates to semiconductor integrated circuit field, and more particularly to a kind of voltage-dividing detection circuit for reducing power consumption.
Background technology
Gate-division type flash memory programming or it is erasable when need 8V/12V voltages, which is produced high by internal charge pump circuit
Pressure, and charge pump in stabilization process since bleeder circuit power consumption is larger, and to ultimately result in the power consumption very big for charge pump transfer efficiency.
Flash memory IP power consumptions are unsuitable for low-power consumption application mainly by charge pump power consumption limit.
Please refer to Fig.1, the circuit for producing high voltage of prior art voltage-dividing detection circuit is mainly by charge pump circuit, bleeder circuit
Formed with comparator.Bleeder circuit produces several partial pressures (Vdet) of Vout, and compared with reference voltage；Work as Vref>Vdet
When, EN=1, charge pump.Work as Vref<During Vdet, EN=0, charge pump is closed.Finally produce a stable output voltage
Vout。
Wherein MOS bleeder circuits produce I1 electric currents all the time, since charge pump transfer efficiency is relatively low, the power supply electricity corresponding to it
Press power consumption larger.During low power dissipation design, the current loading proportion of the charge pump be can not ignore shared by I1.
The content of the invention
The present invention propose it is a kind of reduce power consumption voltage-dividing detection circuit, can effectively relatively low circuit power consumption, its multiplex circuit
The erasable partial pressure of programming can be produced respectively, and reduces bleeder circuit area
In order to achieve the above object, the present invention proposes a kind of voltage-dividing detection circuit for reducing power consumption, including：Electric resistance partial pressure electricity
Road and capacitance partial pressure circuit, resistor voltage divider circuit and the capacitance partial pressure circuit in parallel is connected to charge pump, wherein the resistance
Bleeder circuit is connected with voltage control circuit, and the capacitance partial pressure circuit is connected with switching signal circuit, the electric resistance partial pressure electricity
Road exports the first branch pressure voltage, and second branch pressure voltage of capacitance partial pressure circuit output, is controlled by the switching signal circuit
Charge to capacitance so that second branch pressure voltage is equal to first branch pressure voltage, and is kept by the capacitance partial pressure circuit
Firmly the second branch pressure voltage.
Further, when the voltage control circuit controls charge pump, the resistor voltage divider circuit gives the electricity
Hold bleeder circuit to charge.
Further, when voltage control circuit control charge pump is closed, the electricity of the capacitance partial pressure circuit output
Pressure maintains the second branch pressure voltage.
Further, the capacitance partial pressure circuit includes the programming capacitance partial pressure circuit being connected in parallel and erasable capacitance partial pressure
Circuit, the switching signal circuit of the programming capacitance partial pressure circuit are connected to program voltage control circuit, the erasable capacitance point
The switching signal circuit of volt circuit is connected to erasable voltage control circuit.
Further, when the programming capacitance partial pressure circuit control programming capacitance partial pressure circuit work, it is exported
Program voltage be charge pump input voltage 1/8th.
Further, when the erasable capacitance partial pressure circuit control erasable capacitance partial pressure circuit works, it is exported
Erasable voltage be charge pump input voltage ten halfs.
Further, the resistor voltage divider circuit includes multiple PMOS tube being connected in series.
Further, the capacitance partial pressure circuit includes two capacitances being connected in series.
The voltage-dividing detection circuit proposed by the present invention for reducing power consumption, maintains partial pressure, to drop by using capacitance partial pressure circuit
It is low programming and it is erasable when charge pump circuit power consumption.The voltage-dividing detection circuit can cut charge pump circuit according to programming control signal
Shift to low-power consumption mode, the voltage-dividing detection circuit by multiplexing, realize program erasable operation when produce different partial pressures, and then
Reduce area.
Brief description of the drawings
Fig. 1 show the circuit for producing high voltage structure diagram of voltage-dividing detection circuit in the prior art.
Fig. 2 show the voltage-dividing detection circuit structure diagram of the reduction power consumption of present pre-ferred embodiments.
Fig. 3 show the erasable voltage-dividing detection circuit multiplexing structure schematic diagram of programming of present pre-ferred embodiments.
Embodiment
The embodiment of the present invention is provided below in conjunction with attached drawing, but the invention is not restricted to following embodiment.Root
According to following explanation and claims, advantages and features of the invention will become apparent from.It should be noted that attached drawing is using very simple
The form of change and non-accurate ratio is used, be only used for conveniently, lucidly aiding in illustrating the purpose of the embodiment of the present invention.
Please refer to Fig.2, Fig. 2 show the voltage-dividing detection circuit structural representation of the reduction power consumption of present pre-ferred embodiments
Figure.The present invention proposes a kind of voltage-dividing detection circuit for reducing power consumption, including：Resistor voltage divider circuit 100 and capacitance partial pressure circuit
200, the resistor voltage divider circuit 100 and capacitance partial pressure circuit 200 are connected in parallel in the output voltage HVE of charge pump, wherein institute
State resistor voltage divider circuit 100 and be connected with voltage control circuit 300, the capacitance partial pressure circuit 200 is connected with switching signal circuit
OUT, the output of resistor voltage divider circuit 100 first branch pressure voltage Vdet0, the capacitance partial pressure circuit 200 export the second partial pressure
Voltage Vdet, is controlled by the switching signal circuit OUT and is equal to institute to capacitance charging the second branch pressure voltage Vdet
The first branch pressure voltage Vdet0 is stated, and the second branch pressure voltage Vdet is maintained by the capacitance partial pressure circuit 200.Due to capacitance
The presence of bleeder circuit 200 can reduce to capacitor charging time, maintain Vdet voltages by capacitance so as to save electric resistance partial pressure electricity
The power consumption on road 100.
Preferred embodiment according to the present invention, when the voltage control circuit 300 controls charge pump, that is, works as PUMP_
During EN=1, the resistor voltage divider circuit 100 charges to the capacitance partial pressure circuit 200.
When the voltage control circuit 300 control charge pump is closed, i.e., as PUMP_EN=0, the capacitance partial pressure electricity
The voltage that road 200 exports maintains the second branch pressure voltage Vdet.
Please refer to Fig.3 again, the erasable voltage-dividing detection circuit multiplexing structure of programming that Fig. 3 show present pre-ferred embodiments shows
It is intended to, the capacitance partial pressure circuit 200 includes the programming capacitance partial pressure circuit 210 being connected in parallel and erasable capacitance partial pressure circuit
220, the switching signal circuit of the programming capacitance partial pressure circuit 210 is connected to program voltage control circuit 310, the erasable electricity
The switching signal circuit for holding bleeder circuit 220 is connected to erasable voltage control circuit 320.
Preferred embodiment according to the present invention, when the programming capacitance partial pressure circuit 310 controls the programming capacitance partial pressure electricity
When road 210 works, its program voltage exported is 1/8th of charge pump input voltage.I.e. when PROG is high, the partial pressure
Circuit produces Vdetp voltages, Vdetp=Vdetp0=V (HVE)/8.When PROG2 is high, i.e., in programming process, bleeder circuit
Capacitance partial pressure pattern is always worked in reduce power consumption.The voltage-dividing detection circuit power consumption analysis, power consumption in programming are in pure electricity
Hinder between bleeder circuit and purely capacitive bleeder circuit, power consumption can be effectively reduced compared with partial pressure before.
When the erasable capacitance partial pressure circuit 320 controls the erasable capacitance partial pressure circuit 220 to work, its wiping exported
Write ten halfs that voltage is charge pump input voltage.I.e. when Erase is high, which produces Vdete voltages.
Vdete=Vdete0=V (HVE)/12.The multiplex circuit can produce the erasable partial pressure of programming respectively, and reduce bleeder circuit area.
Preferred embodiment according to the present invention, the resistor voltage divider circuit include multiple PMOS tube being connected in series.Further
, the capacitance partial pressure circuit includes two capacitances being connected in series.
In conclusion the voltage-dividing detection circuit proposed by the present invention for reducing power consumption, maintains by using capacitance partial pressure circuit
Partial pressure, the power consumption of charge pump circuit when programming to reduce and is erasable.The voltage-dividing detection circuit can be according to programming control signal by electricity
Lotus pump circuit switches to low-power consumption mode, which realizes and difference is produced when programming erasable operation by multiplexing
Partial pressure, and then reduce area.
Although the present invention is disclosed above with preferred embodiment, so it is not limited to the present invention.Skill belonging to the present invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (8)
- A kind of 1. voltage-dividing detection circuit for reducing power consumption, it is characterised in that including：Resistor voltage divider circuit and capacitance partial pressure circuit, Resistor voltage divider circuit and the capacitance partial pressure circuit in parallel is connected to charge pump, wherein the resistor voltage divider circuit is connected with voltage Control circuit, the capacitance partial pressure circuit are connected with switching signal circuit, and the resistor voltage divider circuit exports the first branch pressure voltage, Second branch pressure voltage of capacitance partial pressure circuit output, is controlled by the switching signal circuit and charges described the to capacitance Two branch pressure voltages are equal to first branch pressure voltage, and maintain the second branch pressure voltage by the capacitance partial pressure circuit.
- 2. the voltage-dividing detection circuit according to claim 1 for reducing power consumption, it is characterised in that when the voltage control circuit When controlling charge pump, the resistor voltage divider circuit charges to the capacitance partial pressure circuit.
- 3. the voltage-dividing detection circuit according to claim 1 for reducing power consumption, it is characterised in that when the voltage control circuit When controlling charge pump closing, the voltage of the capacitance partial pressure circuit output maintains the second branch pressure voltage.
- 4. the voltage-dividing detection circuit according to claim 1 for reducing power consumption, it is characterised in that the capacitance partial pressure circuit bag Include the programming capacitance partial pressure circuit being connected in parallel and erasable capacitance partial pressure circuit, the switching signal of the programming capacitance partial pressure circuit Circuit is connected to program voltage control circuit, and the switching signal circuit of the erasable capacitance partial pressure circuit is connected to erasable voltage control Circuit processed.
- 5. the voltage-dividing detection circuit according to claim 4 for reducing power consumption, it is characterised in that when the programming capacitance partial pressure During the circuit control programming capacitance partial pressure circuit work, its program voltage exported for charge pump input voltage eight/ One.
- 6. the voltage-dividing detection circuit according to claim 4 for reducing power consumption, it is characterised in that when the erasable capacitance partial pressure During the circuit control erasable capacitance partial pressure circuit work, its erasable voltage exported for charge pump input voltage 12/ One.
- 7. the voltage-dividing detection circuit according to claim 1 for reducing power consumption, it is characterised in that the resistor voltage divider circuit bag Include multiple PMOS tube being connected in series.
- 8. the voltage-dividing detection circuit according to claim 1 for reducing power consumption, it is characterised in that the capacitance partial pressure circuit bag Include two capacitances being connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711330773.6A CN107993689A (en) | 2017-12-13 | 2017-12-13 | A kind of voltage-dividing detection circuit for reducing power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711330773.6A CN107993689A (en) | 2017-12-13 | 2017-12-13 | A kind of voltage-dividing detection circuit for reducing power consumption |
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| Publication Number | Publication Date |
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| CN107993689A true CN107993689A (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711330773.6A Pending CN107993689A (en) | 2017-12-13 | 2017-12-13 | A kind of voltage-dividing detection circuit for reducing power consumption |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111367341A (en) * | 2018-12-26 | 2020-07-03 | 北京兆易创新科技股份有限公司 | Reference voltage generating circuit and NAND chip |
| CN111865073A (en) * | 2019-04-30 | 2020-10-30 | 合肥格易集成电路有限公司 | Partial pressure feedback circuit of PUMP system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6259612B1 (en) * | 1999-09-20 | 2001-07-10 | Kabushiki Kaisha Toshiba | Semiconductor device |
| CN1956289A (en) * | 2005-10-27 | 2007-05-02 | 株式会社瑞萨科技 | Semiconductor integrated circuit and contactless electronic device using the same |
| CN103389771A (en) * | 2013-07-26 | 2013-11-13 | 上海宏力半导体制造有限公司 | Low power consumption voltage regulator circuit |
| CN104615183A (en) * | 2014-12-30 | 2015-05-13 | 上海华虹宏力半导体制造有限公司 | Operating voltage control circuit and method and memorizer |
| CN106787693A (en) * | 2017-02-14 | 2017-05-31 | 上海华虹宏力半导体制造有限公司 | A kind of charge pump circuit of belt switch |
| CN107294376A (en) * | 2016-03-30 | 2017-10-24 | 中芯国际集成电路制造(上海)有限公司 | Charge pump regulator and memory, internet of things equipment |
-
2017
- 2017-12-13 CN CN201711330773.6A patent/CN107993689A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6259612B1 (en) * | 1999-09-20 | 2001-07-10 | Kabushiki Kaisha Toshiba | Semiconductor device |
| CN1956289A (en) * | 2005-10-27 | 2007-05-02 | 株式会社瑞萨科技 | Semiconductor integrated circuit and contactless electronic device using the same |
| CN103389771A (en) * | 2013-07-26 | 2013-11-13 | 上海宏力半导体制造有限公司 | Low power consumption voltage regulator circuit |
| CN104615183A (en) * | 2014-12-30 | 2015-05-13 | 上海华虹宏力半导体制造有限公司 | Operating voltage control circuit and method and memorizer |
| CN107294376A (en) * | 2016-03-30 | 2017-10-24 | 中芯国际集成电路制造(上海)有限公司 | Charge pump regulator and memory, internet of things equipment |
| CN106787693A (en) * | 2017-02-14 | 2017-05-31 | 上海华虹宏力半导体制造有限公司 | A kind of charge pump circuit of belt switch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111367341A (en) * | 2018-12-26 | 2020-07-03 | 北京兆易创新科技股份有限公司 | Reference voltage generating circuit and NAND chip |
| CN111865073A (en) * | 2019-04-30 | 2020-10-30 | 合肥格易集成电路有限公司 | Partial pressure feedback circuit of PUMP system |
| CN111865073B (en) * | 2019-04-30 | 2021-10-19 | 合肥格易集成电路有限公司 | Partial pressure feedback circuit of PUMP system |
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Application publication date: 20180504 |