The D100-B25's control truth table
is 100% compatible with the popular L293D motor driver
Lines Truth Table:
||Fast Motor Stop
||Fast Motor Stop
||Free Running Motor Stop
If needed, the enable line can be
tied to the 5 volts B+, the motor can still be controlled
with the 2 direction input lines.
For motor speed control, Pulse Width Modulation (PWM) is
fully possible with the D100-B25. The PWM signal is usually applied at the EN line.
PLEASE NOTE: The only drawback for
the D100-B25 is its PWM frequency response of only 1Khz.
But at $28.00 each, we believe that you're still getting
your money's worth.
About the Voltage Requirements:
DC motor driver boards are advertised as 12, 24 or even
48 volts. That means that if you buy a board rated for 24
volts, it won't work on 12 volts and if you try to run it
on 48 volts, it might be destroyed.
Not the D100-B25, the D100-B25 can be used on
applications where the motor B+ can be of ANY voltage
between 0 and 55 volts. The user will then use a motor
rated just right for the applied voltage. If a motor of a
lower rating than the motor B+ is to be used, the voltage
to the motor can be brought down by pulse width
Besides the Motor B+, the D100-B25 requires a regulated 5
Volt supply for 2 reasons:
1) For the on board digital
We figured this should pose no problem, since all digital
and microcontroller circuits, which we believe, will be
used in conjunction with the D100-B25, are powered by a
regulated 5 Volt supply.
2) The on board DC-DC converter. This circuitry generates 3
independent 10 volt supplies for the purpose of supplying
the MOSFET's gates with 10 volts no matter what the motor
B+ is at in the range of 0 to 55 volts.
you can, just by example: Safely power a 6 volt DC motor
at 10 amps, without worrying about biasing the MOSFETs at
10 volts, since that is taken care of by the on board
circuitry, powered by the 5 volt supply that you have to
have anyways to power your other digital or
Upon purchasing the D100-B25 or any of our 8051 based boards,
request from us an example to control speed and direction
using the P500, F100, T1 or the S100.
RDs = 0.008ohm
ID = 110A
Operating Temperature: 347� F (175 �C)