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參數(shù)資料
| 型號(hào)： | AMIS-30623AAGA |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 0.8 A, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁(yè)數(shù)： | 32/67頁(yè) |
| 文件大?。?/td> | 2400K |
| 代理商： | AMIS-30623AAGA |
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AMIS-30623 LIN Microstepping Motordriver
Data Sheet
15.3.8. Motor Shutdown Mode
A motor shutdown occurs when:
The chip temperature rises above the thermal shutdown threshold Ttsd (see Thermal Shutdown Mode)
The battery voltage goes below UV2 (see Battery voltage management)
Flag <ElDef> = ‘1’, meaning an electrical problem is detected on one or both coils, e.g. a short circuit.
Flag <CPFail> = ‘1’, meaning there is a charge pump failure
A motor shutdown leads to the following:
H-bridges in high impedance mode
The TagPos register is loaded with the ActPos (to avoid any motion after leaving the motor shutdown mode)
The LIN interface remains active, being able to receive orders or send status.
The conditions to get out of a motor shutdown mode are:
Reception of a GetStatus or GetFullStatus command AND
The four above causes are no more detected
Which leads to H-bridges in Ihold mode. Hence, the circuit is ready to execute any positioning command.
This can be illustrated in the following sequence given as an application tip. The master can check whether there is a problem or not
and decide which application strategy to adopt.
Tj
≥ Tsd or
Vbb
≤ UV2 or
<ElDef> = ‘1’ or
<CpFail> = ‘1’
↓
SetPosition
frame
↑
GetFullStatus
or
GetStatus
frame
↑
GetFullStatus
or
GetStatus
frame
↑…
- The application is
aware of a problem
- Possible confirmation
of the problem
- The circuit is driven in
motor shutdown
mode
- The application is not
aware of this
- The position set-point
is updated by the
LIN Master
- Motor shutdown
mode
no motion
- The application is still
unaware
- Reset <TW> or <TSD> or <UV2> or <StepLoss>
or <ElDef> or <CPFail> by the application
- Possible new detection of over temperature or
low voltage or electrical problem
Circuit
sets <TW> or <TSD> or <UV2> or
<StepLoss> or <ElDef> or <CPFail>
again at ‘1’
Figure 23:Example of Possible Sequence used to Detect and Determine Cause of Motor Shutdown
Important:
While in shutdown mode, since there is no hold current in the coils, the mechanical load can cause a step loss, which
indeed cannot be flagged by the AMIS-30623.
Warning:
The application should limit the number of consecutive GetStatus or GetFullStatus commands to try to get the AMIS-
30623 out of shutdown mode when this proves to be unsuccessful, e.g. there is a permanent defect. The reliability of the circuit could
be altered since Get(Full)Status attempts to disable the protection of the H-bridges.
Notes
(0) The Priority Encoder is describing the management of states and commands. The note below is to be considered illustrative.
(1) If the LIN communication is lost while in shutdown mode, the circuit enters the sleep mode immediately
38
AMI Semiconductor
– June 2006, Rev 3.0
www.amis.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AMIS-30623AANA | 制造商:AMI 制造商全稱(chēng):AMI 功能描述:LIN Microstepping Motordriver |
| AMIS-30623BAGA | 制造商:AMI 制造商全稱(chēng):AMI 功能描述:LIN Microstepping Motordriver |
| AMIS-30623BANA | 制造商:AMI 制造商全稱(chēng):AMI 功能描述:LIN Microstepping Motordriver |
| AMIS30623C6238G | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 LIN STEPPER DRIVER STALL RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| AMIS30623C6238RG | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 LIN STEPPER DRIVER STALL RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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