28
462
M o t o r P o w e r
Pins 13, 14 (+V), and 15, 16 (Ground) are used to connect motor DC power to
the IB462H. Two local capacitors are needed, connected between pins 13, 14
and 15, 16. These must be located as close to the IB462H’s motor power
input pins as possible to ensure stable operation.
R e q u i r e d C a p a c i t o r s
1) The first capacitor is a low impedance
aluminum electrolytic. The continuous
operating voltage of the capacitor should
exceed the maximum supply voltage as
well as any additional voltage caused by
the motor’s back EMF. The value of the
capacitor should be approximately 150µF for every amp of peak per phase
output current.
2) A 0.1 microfarad ceramic capacitor must be used to filter out high fre-
quency noise. It should be located between the IB462H’s motor power
input pins and the aluminum electrolytic capacitor. The continuous
operating voltage of the capacitor should exceed the maximum supply
voltage as well as any additional voltage caused by the motor’s back EMF.
For Power Supply Specifications and Recommendations see Section 1.5:
Power Supply Requirements.
EXAMPLE:
1.4A (Peak
Output Current)@
40VDC X 150µF =
220µF 60V
Figure 1.7.1: Power Interface
0 1µF
100V
.
Motor
Supply
+5VDC
Supply
+
_
+
_
Additional
Electrolytic
Capacitor
+
22µF
10V
Tantalum
SUPPL
Y GROUND
M
OTOR SUPPL
Y (
+
V)
+5VDC SUPPL
Y
5
6
7
8
9 10 11 12 13 14 15 16