![]() ![]() this IC takes HIGH/LOW signals from the Arduino and outputs the same boosted signal to drive the MOSFET gates, specifically its most important function is to increase the voltage to the high side fets above VCC (battery + input) allowing for the use of all N-MOSFETs some drivers also have special circuitry to prevent shoot through (when 2 fets create a direct short circuit to ground destroying the fets.) i eventually settled on the NXP MC33883 Full H-bridge driver IC chosen because - it includes 2 half bridges (so i only require 1 IC) - built-in high side charge-pump - requires only 7 additional components (including protection circuit) - operates with 5.5-60V input (with under and over volt lockout) -1amp peak drive current The H-bridge driver IC is the chip between the Arduino and the MOSFET outputs. ![]()
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