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Finishing the EVOIII Pulseboard from PCBWay

If you purchase the EVOIII Pulseboard from PCBWay's assembly service, you will need to finish it yourself.

Materials

1 x 100 x 100 x 25 mm Heatsink Fisher SK508-100SA
1 x TO-220 Heat Sink Kit
1 x 94 x 20 x 0.18mm silicone insulating thermal pad 1 x JST XH 2-pol double headed jumper
4 x M3 x 16mm socket head cap screw
4 x Isolation Bushing Fisher IB16
4 x M3 Washer

Instructions

  1. With a pair of diagonal cutters, snip off the excess leads from the THT components on the bottom of the board.

  2. Apply the thermal pad onto the MOSFETs, then poke through the screw holes.

  3. Prepare the screws by slipping on the M3 Washer, then the insulated bushing. Now insert the screw into the screw hole from the top of the board, gently pushing through the thermal pad.

  4. Line up the screws with the threaded holes in the heat sink, and tighten them with a 2.5mm hex key

  5. Prepare the TO-220 heat sink kit by sliding the included insulated bushing onto the screw, then passing it through the tab on the MOSFET driver IC. Place the insulation sheet over the screw on the opposite side, then fasten it into the heatsink.

Calibrating Vsense

Warning

This step is required, skipping it could damage your hardware, or make it not work at all.

  1. Apply a 60V input voltage to the pulseboard. The 12V input does not need to be connected for this calibration.

  2. With a Multimeter, measure the voltage across J17, and adjust the multi-turn potentiometer RV5 until the reading is 2.5V.

  3. Only now that the reading is correct, can you connect the JST XH 2-pol double headed jumper to connect J17 to J1.

Video