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Ah, I was assuming that Ig could move in the opposite direction of Iload and thus have a reducing effect on the total power dissipation equation. It's been a few years since I completed my EE work.
Can you tell me what's wrong with my efficiency equations? Efficiency isn't entirely dependent upon the Vin-Vout delta, is it? If so, does that mean that the efficiency of the regulator is closer to 50-60% at 5v/3A and 30-40% at 5v/5a, assuming a 14v input?
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