amis-30523 ON Semiconductor, amis-30523 Datasheet - Page 23
![no-image](/images/manufacturer_photos/0/4/495/on_semiconductor_sml.jpg)
amis-30523
Manufacturer Part Number
amis-30523
Description
Amis-30523 Product Preview Can Micro-stepping Motor Driver
Manufacturer
ON Semiconductor
Datasheet
1.AMIS-30523.pdf
(35 pages)
- Current page: 23 of 35
- Download datasheet (419Kb)
Speed and Load Angle Output
level of the Back−e.m.f. voltage of the motor. This
Back−e.m.f. voltage is sampled during every so−called ”coil
The SLA−pin provides an output voltage that indicates the
630 mA
325 mA
166 mA
1.48 A
V
I
COIL
COIL
V
BB
0
CUR[4:0] = 9 −> 15
CUR[4:0] = 0 −> 8
Current Range 1
Peak Current
Micro−Step
Previous
Figure 19. Programmable Peak−Current Overview
Range 0
Current
Figure 20. Principle of Bemf Measurement
8
I
COIL
Current Decay
CUR[4:0] = 16 −> 22
Coil Current Zero Crossing
Current Range 2
http://onsemi.com
15
ZOOM
Voltage Transient
CUR[4:0] = 23 −> 31
23
Zero Current
Current Range 3
current zero crossings”. Per coil, two zero−current positions
exist per electrical period, yielding in total four zero−current
observation points per electrical period.
V
22
BEMF
Micro−Step
|V
Next
BEMF
|
t
31
t
t
CUR[4:0]
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