AMC8500 Datasheet, PDF (15/27 Pages) List of Unclassifed Manufacturers – TWO PHASE VARIABLE SPEED FAN MOTOR CONTROLLER

Preliminary Specification
aMC8500
Figure 29- Driving Higher Current Motors
12 V
12
3
4
Under Voltage
Lockout
Hall Amplifier
Non-Overlap
Commutation
H
SN
M
NS
16
1
Motor
Drives
The Current Limit Comparator protects the Motor Drives by limiting the output sink current to 1100 mA. In applications that require driving
higher current motors, the drive current can be significantly increased with the addition of two external P-channel MOSFET. Current limit
protection is not maintained since the load is no longer in series with the internal MOSFETs.
Figure 30- Driving Higher Voltage Motors
12 V
48 V
H
SN
M
NS
12
3
4
Under Voltage
Lockout
Hall Amplifier
Non-Overlap
Commutation
16
1
Motor
Drives
The Motor Drives are limited to a maximum of 36 V. These outputs can be cascoded with two external N-channel MOSFETs for driving
higher voltage motors. The cascode configuration maintains current limit protection since the load is in series with the internal MOSFETs.
© Andigilog, Inc. 2006
- 15 -
www.andigilog.com
August 2006 - 70A04018