Diode Power Dissipation V

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Diode Power Dissipation V

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The total IC power dissipation can be estimated from the

above plots by summing the gate drive losses with the

bootstrap diode losses for the intended application. Because

the diode losses can be significant, an external diode placed

in parallel with the internal bootstrap diode (refer to Figure 4)

and can be helpful in removing power from the IC. For this to

be effective, the external diode must be placed close to the

IC to minimize series inductance and have a significantly

lower forward voltage drop than the internal diode.

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