PD42-1070 Hardware Manual • Hardware Version V1.00 | Document Revision V1.10 • 2018-July-03
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6 Operational Ratings and Characteristics
6.1 Absolute Maximum Ratings
Parameter
Min Max Unit
Supply voltage
+9
+28
V
Working temperature
-30
+40
° C
Motor coil current / sine wave
peak
1.4
A
Continuous motor current (
RMS
)
1.0
A
NOTICE
Avoid exceeding the absolute maximum rating under all circumstances.
Stresses above those listed under "‘Absolute Maximum Ratings"’ may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at those or any other conditions above those indicated in
the operation listings of this specification is not implied. Exposure to maximum
rating conditions for extended periods may affect device reliability.
Keep the power supply voltage below the upper limit of +28V! Otherwise
the board electronics will seriously be damaged! Especially, when the selected
operating voltage is near the upper limit a regulated power supply is highly
recommended.
6.2 Electrical Characteristics (Ambient Temperature 25° C)
Parameter
Symbol
Min Typ
Max
Unit
Supply voltage
V DD
9
24
26
V
Motor coil current / sine wave
peak
(chopper regu-
lated, adjustable via TTL UART interface)
I
COILpeak
0
1.4
A
Continuous motor current (
RMS
)
I
COILRM S
0
1.0
A
Power supply current
I
DD
I
COIL
1.4
∗
I
COIL
A
Table 10: Electrical Characteristics
6.3 I/O Ratings (Ambient Temperature 25° C)
Parameter
Symbol
Min
Typ Max
Unit
COMM input voltage
V
COM M
3.3
5
+
V DD
V
Input frequency of optically isolated I/Os
f
in
45
kHz
TTL UART input voltage
V
T T L
_
IN
5
5.5
V
TTL UART low level voltage
V
T LL
L
0
1.75
V
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