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| 型号： | AMIS30623C6238G |
| 厂商： | ON Semiconductor |
| 文件页数： | 34/61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
Table 26. TRUTH TABLE
Condition
Vbemf < Average ? DelThr
Vbemf > Average + DelThr
Vbemf < AbsThr
<DelStallLo>
1
0
0
<DelStallHi>
0
1
0
<AbsStall>
0
0
1
<Stall>
1
1
1
By design, the motion will only be detected when the
motor is running at the maximum velocity, not during
acceleration or deceleration.
If the motor is positioning when Stall is detected, an
(internal) hardstop of the motor is generated and the
<StepLoss> and <Stall> flags are set. These flags can
only be reset by sending a GetFullStatus command.
If Stall appears during DualPosition then the first phase is
Table 27.
ABSOLUTE AND DELTA THRESHOLD SETTINGS
AbsThr AbsThr DelThr DelThr
Index Level (V) (*) Index Level (V) (*)
0 Disable 0 Disable
1 0.5 1 0.25
2 1.0 2 0.50
cancelled (via internal hardstop) and after timeout Tstab (see
AC table) the second phase at Vmin starts.
When the <Stall> flag is set the position controller will
generate an internal HardStop. As a consequence also the
<Steploss> flag will be set. The position in the internal
counter will be copied to the <ActPos> register. All flags
can be read out with the GetStatus or GetFullStatus
command.
Important Remark (limited to motion detection flags /
parameters):
3
4
5
6
7
8
9
A
B
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
3
4
5
6
7
8
9
A
B
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
Using GetFullStatus will read AND clear the following
flags: <Steploss> , <Stall> , <AbsStall> ,
<DelStallLo> and <DelStallHi> . New positioning is
possible and the <ActPos> register will be further updated.
Using GetStatus will read AND clear ONLY the
<Steploss> flag. The <Stall> , <AbsStall> ,
C 6.0 C
D 6.5 D
E 7.0 E
F 7.5 F
(*) Not tested in production. Values are approximations.
3.00
3.25
3.50
3.75
<DelStallLo> and <DelStallHi> flags are NOT
cleared. New positioning is possible and the <ActPos>
register will be further updated.
Motion detection is disabled when the RAM registers
<AbsThr[3:0]> and <DelThr[3:0]> are zero. Both
levels can be programmed using the LIN command
SetStallParam in the registers <AbsThr[3:0]> and
<DelThr[3:0]> . Also the OTP register
<AbsThr[3:0]> and <DelThr[3:0]> can be set
using the LIN command SetOTPParam . These values are
copied in the RAM registers during power on reset.
MinSamples
<MinSamples[2:0]> is a programmable delay timer.
After the zero crossing is detected, the delay counter is
started. After the delay time ? out (t delay ) the back ? emf
sample is taken. For more information please refer to the
Application Note “Robust Motion Control with
AMIS ? 3062x Stepper Motor Drivers”.
Table 28. BACK EMF SAMPLE DELAY TIME
Index MinSamples[2:0] t DELAY ( m s)
0 000 87
1
2
3
4
5
6
7
http://onsemi.com
34
001
010
011
100
101
110
111
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