MBC100 Anaheim, MBC100 Datasheet - Page 2

• Manufacturer Part Number: MBC100
• Description: Modular Bipolar Chopper Driver
• Manufacturer: Anaheim

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CONNECTOR DB1 (INPUT)
Pin
1
2
3
4
5
6
7
8
9
The logic inputs to the MBC100 are of the sourcing type, meaning that an input left open will automatically be
pulled up to a high level. To drive input low, tie it to ground directly or use a saturated transistor.
SPECIFICATIONS
#L010053
CLOCK
DIRECTION
ON/OFF
CURRENT
REDUCE
HS/FS
66% / 33%
V
5V
GROUND
Parameter
Continuous output current
Peak output current
33% standstill output current
66% standstill output current
Supply voltage
Clock frequency
Chopping frequency
Operating temperature
5V
IN
OUT
OUT
Name
current
Description
The CLOCK input is the stepping clock for the driver. When the clock input transitions from high to
low, the motor takes one step.
The DIRECTION input controls the direction in which the motor steps. If the DIRECTION input is
high the motor will step in the clockwise (CW) direction. If the DIRECTION input is low the motor will
step in the counterclockwise (CCW) direction. The directions are defined looking in to the shaft of the
motor. Note that the order of connection of the motor leads to the driver outputs affects the direction
in which the motor turns.
The ON/OFF input controls the motor. If the ON/OFF input is high, the motor will step with the clock
and will have a holding current at standstill. If the ON/OFF input is low the motor will be turned off
with no holding current and clock signals will be ignored. When the ON/ OFF input becomes high
again, the motor will hold at the step it was at when the ON/OFF input went low.
When the motor has been at standstill for two seconds, the driver will enter a reduced current mode if
the CURRENT_REDUCE input is high. The current level in the motor will automatically adjust to a
level determined by the 66%/33% input. If the CURRENT_REDUCE input is low, automatic current
reduction will be disabled. Note that if automatic current reduction is disabled and the motor is held at
standstill for long periods of time, the motor or driver may experience heating problems.
The HS/FS input controls the step mode of the driver. If the HS/FS input is high, the driver will be in
half-step mode. If the HS/FS input is low, the driver will be in full-step mode.
The 66% / 33% input controls the level of current in the motor in the automatic current reduction
mode. If the 66% / 33% input is high, the motor current will drop to 66% of the CURRENT SETTING
current. If the input is low, the motor current will drop to 33% of the CURRENT SETTING current.
Note that with some motors, the 33% level may cause audible noise while at standstill.
V
will give the best motor performance
The 5V
power applications (<100mA current)
This pin is the ground reference for V
IN
is the power supply for the driver. V
OUT
pin provides a regulated 5V DC output from the driver. This output is intended for limited-
MIN.
200
66
132
8
0
0
MAX.
1000
1
248
495
40
10k
22k
70
100
Unit
mA
A
mA
mA
V DC
Hz
Hz
°C
mA
IN
and 5V
IN
should be in the range of 8V - 40V DC. NOTE: Using 40Vdc
OUT
.
DIMENSION DRAWING