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| 型号： | AMIS30623C6238G |
| 厂商： | ON Semiconductor |
| 文件页数： | 33/61页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRIVER/CTLR 20-SOIC |
| 标准包装： | 38 |
| 应用： | 步进电机驱动器 |
| 评估套件： | 可供 |
| 输出数： | 1 |
| 电流 - 输出： | 800mA |
| 电源电压： | 6.5 V ~ 29 V |
| 工作温度： | -40°C ~ 165°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC |
| 包装： | 管件 |
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AMIS ? 30623
This can be illustrated in the following sequence given as an application example. The master can check whether there is
a problem or not and decide which application strategy to adopt.
Table 25. Example of Possible Sequenc e used to Detect and Determine Cause of Motor Shutdown
Tj ≥ Tsd or
V BB ≤ UV2 (>15s) or
< ElDef > = ‘1’ or
< CPFail > = ‘1’ (>15s)
↓
? The circuit is driven in motor shutdown
mode
SetPosition
frame
↓
? The position set ? point is
updated by the LIN Master
GetFullStatus or
GetStatus frame
↓
? The application is aware
of a problem
GetFullStatus or
GetStatus frame
↓ ...
? Possible confirmation of
the problem
? The application is not aware of this
? 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’
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.
If the LIN communication is lost while in shutdown mode,
the circuit enters the sleep mode immediately.
Note: The Priority Encoder is describing the management of
states and commands.
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.
Motion Detection
Motion detection is based on the back emf generated
internally in the running motor. When the motor is blocked,
e.g. when it hits the end ? stop, the velocity and as a result also
the generated back emf, is disturbed. The AMIS ? 30623
Velocity
V max
senses the back emf, calculates a moving average and
compares the value with two independent threshold levels:
Absolute threshold ( AbsThr[3:0] ) and Delta threshold
( <DelThr[3:0]> ). Instructions for correct use of these
two levels in combination with three additional parameters
( <MinSamples> , <FS2StallEn> and <DC100StEn> )
are available in a dedicated Application Note “Robust
Motion Control with AMIS ? 3062x Stepper Motor Drivers”.
If the motor is accelerated by a pulling or propelling force
and the resulting back emf increases above the Delta
threshold (+ D THR), then <DelStallHi> is set. When the
motor is slowing down and the resulting back emf decreases
below the Delta threshold ( ? D THR), then <DelStallLo>
is set. When the motor is blocked and the velocity is zero
after the acceleration phase, the back emf is low or zero.
When this value is below the Absolute threshold,
<AbsStall> is set. The <Stall> flag is the OR function
of <DelStallLo> OR <DelStallHi> OR
<AbsStall> .
Vbemf
+ D THR
V min
Vbemf
Motor speed
t
V bemf
V bemf
? D THR
t
DeltaStallHi
VABSTH
Back emf
AbsStall
t
t
DeltaStallLo
t
t
Figure 20. Triggering of the Stall Flags in Function of Measured Backemf and the Set Threshold Levels
http://onsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AMIS30623C6238RG | 功能描述:马达/运动/点火控制器和驱动器 LIN STEPPER DRIVER STALL RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| AMIS30623C6239G | 功能描述:马达/运动/点火控制器和驱动器 LIN 800mA STEPPER DRIVER RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| AMIS30623C6239RG | 功能描述:马达/运动/点火控制器和驱动器 LIN 800mA STEPPER DRIVER RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| AMIS30623C623AG | 功能描述:马达/运动/点火控制器和驱动器 LIN 800mA STEPPER DRIVER RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| AMIS30623C623ARG | 功能描述:马达/运动/点火控制器和驱动器 800mA CNTRL LIN BUS MICRO STP/STALL DET RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
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