CN104362935B - A kind of power driving circuit suppressing current impulse - Google Patents
A kind of power driving circuit suppressing current impulse Download PDFInfo
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- CN104362935B CN104362935B CN201410625691.4A CN201410625691A CN104362935B CN 104362935 B CN104362935 B CN 104362935B CN 201410625691 A CN201410625691 A CN 201410625691A CN 104362935 B CN104362935 B CN 104362935B
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Abstract
nullThe present invention relates to integrated circuit power drive circuit，It is specially a kind of power driving circuit suppressing current impulse，Its circuit structure is simple，Inhibit the current impulse on power supply，Improve reliability，It includes motor load，Motor load one end connects power supply，The other end connects driving pipe D1、Drive pipe D2，Drive the grid end connecting valve S5 of pipe D1、Switch S6，Drive the grid end connecting valve S7 of pipe D2、Switch S8，It also includes the first pull-up current source a1、Second pull-up current source a2，First a1 one end, pull-up current source connects power supply、Other end connecting valve S1 one end，The switch S1 other end connects the grid end driving pipe D1、Switch S2 one end，The switch S2 other end connects drain terminal and the grid end of the first NMOS tube N1，The source of the first NMOS tube N1 connects first b1 one end, pull-down current source，First pull-down current source b1 other end ground connection，Second a2 one end, pull-up current source is connected circuit structure with first a1 one end, pull-up current source and is arranged symmetrically with.
Description
Technical field
The present invention relates to integrated circuit power drive circuit, a kind of power driving circuit suppressing current impulse.
Background technology
Micro-machine has the most more and more been used for electronic equipment for consumption, and the heavy current pulse of moment not only can impact injury to power-supply system, it is also possible to miscellaneous part in equipment is interfered and injured.On the other hand, application wants cube more and more less, cost requirement is more and more lower, therefore low cost, performance meet the scheme of requirement and are more accepted, the complexity of size and design in order to reduce motor, and the most general scheme is to provide a single-chip integration motor-drive circuit, as shown in Figure 1, this drive circuit has been directly integrated 2 and has driven pipe D1, D2 and driving pipe control circuit, and in motor driven systems, complementary driving pipe configuration is basic structure；Use this structure, circuit structure is simple, it is easily achieved, management and control Current direct control 2 is driven to drive pipe D1, the on or off of D2, therefore the moment in switching can produce the biggest current impulse of moment on power supply, not only power supply can be impacted, the moment electromagnetic wave sent can also ambient electronics, although by inductance in motor and mutual inductance existence, this pulse there is certain inhibitory action, but in order to improve the efficiency of motor, reduce the power consumption of chip, the conduction impedance driving pipe must sufficiently small (< 1Ohm), therefore current impulse is inevitable.
Summary of the invention
In order to solve the problems referred to above, the invention provides a kind of power driving circuit suppressing current impulse, its circuit structure is simple, it is suppressed that the current impulse on power supply, improves reliability.
nullIts technical scheme is such that a kind of power driving circuit suppressing current impulse，It includes motor load，Described motor load one end connects the first power supply，The other end connects driving pipe D1、Drive the drain terminal of pipe D2，Described driving pipe D1、The drain terminal driving pipe D2 connects electric capacity respectively and is followed by respective grid end，Described driving pipe D1、The source driving pipe D2 connects electric capacity respectively and is followed by respective grid end，Described driving pipe D1、Drive the source ground connection of pipe D2，The grid end connecting valve S5 of described driving pipe D1、Switch S6 one end，The described switch S5 other end connects second source、Described switch S6 other end ground connection，The grid end connecting valve S7 of described driving pipe D2、Switch S8 one end，The described switch S8 other end connects described second source、Described switch S7 other end ground connection，It is characterized in that，It also includes the first pull-up current source a1、Second pull-up current source a2，Described first a1 one end, pull-up current source connects described second source、Other end connecting valve S1 one end，The described switch S1 other end connects the grid end driving pipe D1、Switch S2 one end，The described switch S2 other end connects drain terminal and the grid end of the first NMOS tube N1，The source of described first NMOS tube N1 connects first b1 one end, pull-down current source，Described first pull-down current source b1 other end ground connection，Described second a2 one end, pull-up current source connects described second source、Other end connecting valve S4 one end，The described switch S4 other end connects the grid end driving pipe D2、Switch S3 one end，The described switch S3 other end connects drain terminal and the grid end of the second NMOS tube N2，The source of described second NMOS tube N2 connects second b2 one end, pull-down current source，Described second pull-down current source b2 other end ground connection.
It is further characterized by, and described driving pipe D1, driving pipe D2 are NMOS tube；
Described first pull-up current source a1, the second pull-up current source a2 inflow current size are identical, and described first pull-down current source b1, the second pull-down current source b2 outflow size of current are identical.
After using the circuit structure of the present invention, by driving pipe D1 and D2 that motor load is driven, pipe D1 and D2 is driven to form complementary structure；Secondly, make driving pipe D1 and the switching of D2 state, first make the first pull-up current source a1, the second pull-up current source a2 respectively the grid driving pipe D1 and D2 be carried out slow discharge and recharge, after certain time delay, then the grid driving pipe D1 and D2 is directly drawn high or dragged down；Finally, the discharge channel at the first pull-down current source b1, the second pull-down current source b2 is each connected the first NMOS tube N1 of a diode-connected and the second NMOS tube N2, it is ensured that driving pipe D1 and D2 is a stable state within time delay；By the method for above 3, not only effective utilization drives pipe D1 and D2 to be driven motor load, the most also inhibits the current impulse on power supply in the moment driving pipe D1 and D2 switching.
Accompanying drawing explanation
Fig. 1 is prior art circuits structural representation；
Fig. 2 is electrical block diagram of the present invention；
Fig. 3 is sequencing contro schematic diagram of the present invention.
Detailed description of the invention
nullAs shown in Figure 2，A kind of power driving circuit suppressing current impulse，It includes motor load，Motor load one end connects the first power supply，The other end connects driving pipe D1、Drive the drain terminal of pipe D2，Drive pipe D1、The drain terminal driving pipe D2 connects electric capacity respectively and is followed by respective grid end，Drive pipe D1、The source driving pipe D2 connects electric capacity respectively and is followed by respective grid end，Drive pipe D1、Drive the source ground connection of pipe D2，Drive the grid end connecting valve S5 of pipe D1、Switch S6 one end，The switch S5 other end connects second source、Switch S6 other end ground connection，Drive the grid end connecting valve S7 of pipe D2、Switch S8 one end，The switch S8 other end connects second source、Switch S7 other end ground connection，It also includes the first pull-up current source a1、Second pull-up current source a2，First a1 one end, pull-up current source connects second source、Other end connecting valve S1 one end，The switch S1 other end connects the grid end driving pipe D1、Switch S2 one end，The switch S2 other end connects drain terminal and the grid end of the first NMOS tube N1，The source of the first NMOS tube N1 connects first b1 one end, pull-down current source，First pull-down current source b1 other end ground connection，Second a2 one end, pull-up current source connects second source、Other end connecting valve S4 one end，The switch S4 other end connects the grid end driving pipe D2、Switch S3 one end，The switch S3 other end connects drain terminal and the grid end of the first NMOS tube N2，The source of the second NMOS tube N2 connects second b2 one end, pull-down current source，Second pull-down current source b2 other end ground connection；Driving pipe D1, driving pipe D2 is NMOS tube, drives pipe D1, D2 to be typically a conducting state, a cut-off state, and motor load is 2 coupling coils；First pull-up current source a1, the second pull-up current source a2 inflow current size are identical, and the first pull-down current source b1, the second pull-down current source b2 outflow size of current are identical
As shown in Figure 3, switch S1 and switch S3, by PH1 sequencing contro, switchs S1 and switch S3 conducting, otherwise ends during PH1 height；Switch S2 and switch S4, by PH2 sequencing contro, switchs S2 and switch S4 conducting during PH2 height；Switch S5 and switch S7, by PH1 ' sequencing contro, switchs S5 and switch S7 conducting, otherwise ends when PH1 ' is high；Switch S6 and switch S8, by PH2 ' sequencing contro, switchs S6 and switch S8 conducting when PH2 ' is high.
Claims (3)
- null1. the power driving circuit suppressing current impulse，It includes motor load，Described motor load one end connects the first power supply，The other end connects driving pipe D1、Drive the drain terminal of pipe D2，Described driving pipe D1、The drain terminal driving pipe D2 connects electric capacity respectively and is followed by respective grid end，Described driving pipe D1、The source driving pipe D2 connects electric capacity respectively and is followed by respective grid end，Described driving pipe D1、Drive the source ground connection of pipe D2，The grid end connecting valve S5 of described driving pipe D1、Switch S6 one end，The described switch S5 other end connects second source、Described switch S6 other end ground connection，The grid end connecting valve S7 of described driving pipe D2、Switch S8 one end，The described switch S8 other end connects described second source、Described switch S7 other end ground connection，It is characterized in that，It also includes the first pull-up current source a1、Second pull-up current source a2，Described first a1 one end, pull-up current source connects described second source、Other end connecting valve S1 one end，The described switch S1 other end connects the grid end driving pipe D1、Switch S2 one end，The described switch S2 other end connects drain terminal and the grid end of the first NMOS tube N1，The source of described first NMOS tube N1 connects first b1 one end, pull-down current source，Described first pull-down current source b1 other end ground connection，Described second a2 one end, pull-up current source connects described second source、Other end connecting valve S4 one end，The described switch S4 other end connects the grid end driving pipe D2、Switch S3 one end，The described switch S3 other end connects drain terminal and the grid end of the second NMOS tube N2，The source of described second NMOS tube N2 connects second b2 one end, pull-down current source，Described second pull-down current source b2 other end ground connection.
- A kind of power driving circuit suppressing current impulse the most according to claim 1, it is characterised in that described driving pipe D1, driving pipe D2 are NMOS tube.
- A kind of power driving circuit suppressing current impulse the most according to claim 1, it is characterized in that, described first pull-up current source a1, the second pull-up current source a2 inflow current size are identical, and described first pull-down current source b1, the second pull-down current source b2 outflow size of current are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410625691.4A CN104362935B (en) | 2014-11-10 | 2014-11-10 | A kind of power driving circuit suppressing current impulse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410625691.4A CN104362935B (en) | 2014-11-10 | 2014-11-10 | A kind of power driving circuit suppressing current impulse |
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| Publication Number | Publication Date |
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| CN104362935A CN104362935A (en) | 2015-02-18 |
| CN104362935B true CN104362935B (en) | 2016-12-07 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335484A (en) * | 2007-06-27 | 2008-12-31 | 三菱电机株式会社 | Gate drive apparatus |
| CN101631411A (en) * | 2008-07-15 | 2010-01-20 | 英特赛尔美国股份有限公司 | Dynamic headroom control for LED driver |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130342041A1 (en) * | 2012-06-15 | 2013-12-26 | Black & Decker Inc. | Stator assembly for a brushless motor in a power tool |
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2014
- 2014-11-10 CN CN201410625691.4A patent/CN104362935B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335484A (en) * | 2007-06-27 | 2008-12-31 | 三菱电机株式会社 | Gate drive apparatus |
| CN101631411A (en) * | 2008-07-15 | 2010-01-20 | 英特赛尔美国股份有限公司 | Dynamic headroom control for LED driver |
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| CN104362935A (en) | 2015-02-18 |
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Effective date of registration: 20190114 Address after: Room 504, 560 Shengxia Road, Pudong New Area, Shanghai 200000 Patentee after: Pu ran semiconductor (Shanghai) Co., Ltd. Address before: 214101 Ruiyun 716, 99 Furong Zhongsan Road, Xishan District, Wuxi City, Jiangsu Province Patentee before: Wuxi Puya Semiconductor Co., Ltd. |
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Address after: Room 504, 560 Shengxia Road, Pudong New Area, Shanghai 200000 Patentee after: Praran semiconductor (Shanghai) Co., Ltd Address before: Room 504, 560 Shengxia Road, Pudong New Area, Shanghai 200000 Patentee before: PUYA SEMICONDUCTOR (SHANGHAI) Co.,Ltd. |
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