Hardware description
and configuration
UM1925
8/17
DocID028121 Rev 1
Maximum current is 2.8 A rms and the output R
DS(on)
is equal to 0.3 W (T
J
= 25 °C).
The maximum overcurrent detection threshold is set to 5.6 A.
The total rms current flowing in A+ and A- DC motor must be below the 2.8 A
rms limit. The OCD threshold is also triggered when the sum of the two output
currents exceeds the programmed threshold.
The same for the B+ and B- outputs.
Motor A connected between A+ (CN1 pin1) and GND
Motor B connected between A- (CN1 pin2) and GND
Motor C connected between B+ (CN1 pin4) and GND
Motor D connected between B- (CN1 pin3) and GND
Table 5: Jumper selection
J1
J2
J3
J4
Disconnected
Disconnected
Disconnected
Disconnected
Figure 5: Four unidirectional DC motors
2.2.3
Mode no. 3: parallel connection for higher current - one DC motor
bidirectional
This mode, with output power in parallel, increases the output current capability.
The motor supply voltage is connected to J1 pin 5 and 6 with a maximum voltage of 50 V
DC.
Maximum current is 5.6 A rms and the output R
DS(on)
is equal to 0.15 W (T
J
= 25 °C).
The maximum overcurrent detection threshold is set to 11.2 A.
Motor A connected between
