AMIS-30621 LIN Micro-stepping Motor Driver
Data Sheet
11.0 Typical Application
VBAT
C8
C7
C6
220 nF
C5
C4
100 nF
C3
100 nF
100 μF
CPP VCP VBB
11 12
VBB
CPN
Connect
to VBAT
9
10
19
1 kΩ
VDD
3
20
1 μF
C9
SWI
or GND
C2
2,7 nF
HW0
1
2
MOTXP
18
16
HW1
HW2
MOTXN
AMIS-30621
1 kΩ
Connect
to VBAT
or GND
M
8
6
MOTYP
MOTYN
15
13
C1
2,7 nF
LIN
LIN bus
5
4
7
17
14
VDR 27V
TST
GND
Figure 7: Typical Application Diagram
Notes:
(1) All resistors are ± 5%, ¼ W.
(2) C1, C2 minimum value is 2.7nF, maximum value is 10nF.
(3) Depending on the application, the ESR value and working voltage of C7 must be carefully chosen.
(4) C3 and C4 must be close to pins VBB and GND.
(5) C5 and C6 must be as close as possible to pins CPN, CPP, VCP, and VBB to reduce EMC radiation.
(6) C9 must be a ceramic capacitor to assure low ESR.
12.0 Positioning Parameters
12.1 Stepping Modes
One of four possible stepping modes can be programmed:
• Half-stepping
• 1/4 micro-stepping
• 1/8 micro-stepping
• 1/16 micro-stepping
AMI Semiconductor – Sept. 2007, Rev 1.5
10
www.amis.com
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