User manual
Board User Manual 4 Revision 1.1
2015-11-24
H-Bridge Kit 2Go
Evaluation Board for DC Motor Control with the IFX9201
Getting Started
2 Getting Started
2.1 Power Supply
For providing the power to drive a DC motor the H-Bridge Kit 2Go needs an external power supply connected to
VBAT. To protect the board from accidentialy reverted supply voltages the H-Bridge Kit 2Go is equipped with a
reverse polarity protection circuit
As with the XMC 2Go the microcontroller can be supplied by the PC via the Micro USB port. To enable
standalone operation without a connection to the PC the H-Bridge Kit 2Go also features an on board 5V
voltage regulator which acts a pre-regulator for the 3.3V regulator of the microcontroller.
Attention: The 5V regulator is a linear voltage regulator and can get very hot depending on the input voltage!
VBAT can range from 5V to to a maximum of 36V without damaging the board. However, since the power
dissipation of the 5V regulator strongly increases with the input voltage it is recommended to keep VBAT below
15V or to provide additional cooling by attaching a heat sink to the back side of the board.
Another option when applying a higher VBAT is to provide 5V externally at the V5V input of the board. This will
relieve the on board regulator and enable operation up to 36V, the maximum supply voltage of the IFX9201.
2.2 Selecting a DC motor
The IFX9201 can drive small DC motors with peak currents of up to 6A. The achievable continuous drive current
is lower and depends on supply voltage, switching frequency and the cooling conditions. Realistic continuous
drive currents for this kit are in the range of 1A to 2A. Many motors for toys, RC models or robotics fall in this
range.
2.3 Connecting the Kit
To get started with the Kit just connect a suitable DC Motor and the power supply as shown in Figure 3.
The power pads are spaced with a 2.54 mm pitch. Each power signal (except V5V) is occupying two pads.
Therefore it is possible to use either 2.54 mm or 5.08 mm spaced connectors or screw terminals.
Figure 3 Connecting Motor, Supply and USB Cable