Dual VNH2SP30 Motor Driver Carrier MD03A
£53.40
inc VAT
Original price
£44.50
-
Original price
£44.50
Original price
£44.50
£44.50
-
£44.50
Current price
£44.50
ex VAT
SKU VNH2SP30-MD03A
Pololu item #: 708
Real-world power dissipation considerations
The motor drivers have maximum current ratings of 30 A continuous. However, the chips by themselves will overheat at lower currents (see table above for typical values). The actual current you can deliver will depend on how well you can keep the motor drivers cool. The carrier printed circuit board is designed to draw heat out of the motor driver chips, but performance can be improved by adding a heat sink. In our tests, we were able to deliver short durations (on the order of milliseconds) of 30 A and several seconds of 20 A without overheating. At 6 A, the chip gets just barely noticeably warm to the touch. For high-current installations, the motor and power supply wires should also be soldered directly instead of going through the supplied terminal blocks, which are rated for up to 15 A.
This product can get hot enough to burn you long before the chip overheats. Take care when handling this product and other components connected to it.
Many motor controllers or speed controllers can have peak current ratings that are substantially higher than the continuous current rating; this is not the case with these motor drivers, which have a 30 A continuous rating and over-current protection that can kick in as low as 30 A (45 A typical). Therefore, the stall current of your motor should not be more than 30 A. (Even if you expect to run at a much lower average current, the motor can still draw high currents when it is starting or if you use low duty cycle PWM to keep the average current down.)
General specifications
- Motor driver : VNH2SP30
- Motor channels : 2
- Minimum operating voltage : 5.5 V
- Maximum operating voltage : 16 V
- Continuous output current per channel : 14 A
- Peak output current per channel : 30 A
- Continuous paralleled output current : 25 A
- Current sense : 0.13 V/A
- Maximum PWM frequency : 20 kHz