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NJM3517D2 参数 Datasheet PDF下载

NJM3517D2图片预览
型号: NJM3517D2
PDF下载: 下载PDF文件 查看货源
内容描述: 步进电机控制器/驱动器 [STEPPER MOTOR CONTROLLER / DRIVER]
分类和应用: 驱动器电动机控制电机控制器
文件页数/大小: 12 页 / 191 K
品牌: NJRC [ NEW JAPAN RADIO ]
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NJM3517  
DIR  
H
L
DIR  
INT  
L
L
INH  
HSM  
STEP  
H
P
HSM  
STEP  
H
P
OB  
L
P
P
P
P
P
P
L
OB  
LB  
L
LB  
P
P
P
P
P
P
L
PB1  
PB2  
PA1  
PA2  
LA  
PB1  
PB2  
PA1  
PA2  
LA  
OA  
OA  
Figure 7. Full-step mode, forward. 4-step sequence. Gray-code  
Figure 8. Full-step mode, reverse. 4-step sequence. Gray-  
+90° phase shift.  
code -90° phase shift.  
DIR  
L
L
L
P
DIR  
H
L
INH  
INH  
HSM  
STEP  
HSM  
STEP  
L
P
C
C
OB  
P
P
P
P
P
P
P
P
OB  
P
P
P
P
P
P
P
P
LB  
LB  
PB1  
PB2  
PA1  
PA2  
LA  
PB1  
PB2  
PA1  
PA2  
LA  
OA  
OA  
Figure 9. Half-step mode, forward. 8-step sequence.  
Figure 10. Half-step mode, reverse. 8-step sequence.  
DIR  
L
H
L
INH  
HSM  
STEP  
P
C
OB  
P
P
H
H
H
H
P
P
LB  
PB1  
PB2  
PA1  
PA2  
LA  
OA  
Figure 11. Half-step mode, inhibit.  
APPLICATIONS INFORMATION  
Logic inputs  
If any of the logic inputs are left open, the circuit will treat it as a high-level input. Unused inputs should be con-  
nected to proper voltage levels in order to get the highest noise immunity.  
Phase outputs  
Phase outputs use a current-sinking method to drive the windings in a unipolar way. A common resistor in the  
center tap will limit the maximum motor current.  
Fast free-wheeling diodes must be used to protect output transistors from inductive spikes.  
Series diodes in V supply, prevent VSS voltage from shorting through the VMM power supply. However, these  
may be omitted if noMbMi-level is used. The VSS pin must not be connected to a lower voltage than VMM, but can be left  
unconnected.  
Zero outputs  
Ø and Ø , “zero A” and “zero B,” are open-collector outputs, which go high when the corresponding phase output  
isAinhibiteBd by the half-step-mode circuitry. A pull-up resistor should be used and connected to a suitable supply  
voltage (5 kohms for 5V logic). See “Bipolar phase logic output.”  
Interference  
To avoid interference problems, a good idea is to route separate ground leads to each power supply, where the  
only common point is at the NJM3517’s GND pin. Decoupling of VSS and VMM will improve performance. A 5 kohm  
pull-up resistor at logic inputs will improve level definitions, especially when driven by open-collector outputs.