MB V&V TECH Multifunctional Power Shield 6+6 T800 for Arduino : Data Sheet : Page 25

Multiplying PS outputs

[Fig. 24 – Example of two stacked PSs]

We recommend installing the board that will work with PWM signals on top because it will get

hotter. This way it will be easier to dissipate the heat. If both boards will work in PWM mode (for

example, using the Arduino MEGA microcontroller because it has 15 PWM channels) with the

maximum load applied, then use active cooling (i.e. a high-flow server fan). The best ventilation

direction is from right to left.

Merging PS outputs

If you want to control higher currents, you can easily do this by connecting outputs in parallel.

This way you will have 6 higher current outputs and the current will be about 1.8 times higher.

When connecting outputs in parallel, do not forget to set SW1 on both boards to the same

position. Also, to make sure that the currents between the merged outputs are completely the

same, use 50...100mΩ resistors.

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