VRM10.1 XPhaseTM/DirectFETTM High Efficiency Demo Board ...
VRM10.1 XPhaseTM/DirectFETTM High Efficiency Demo Board ...
VRM10.1 XPhaseTM/DirectFETTM High Efficiency Demo Board ...
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<strong>VRM10.1</strong> XPhase TM /DirectFET TM<br />
<strong>High</strong> <strong>Efficiency</strong> <strong>Demo</strong> <strong>Board</strong><br />
(DB3C)<br />
Effect of Gate Driver Voltage on Power Loss<br />
The following chart shows that the power loss at full load (120A) is affected by the gate driver<br />
voltage.<br />
(The standard 6-phase, 400KHz demo board has its gate voltage set at 7.5V)<br />
W<br />
36.0<br />
35.0<br />
34.0<br />
33.0<br />
Total Power Loss vs. Gate Driver Voltage<br />
(Load=120A)<br />
407B (6-phase, 830KHz)<br />
415A (5-phase, 1.02MHz)<br />
415A (5-phase, 810KHz)<br />
32.0<br />
31.0<br />
30.0<br />
29.0<br />
28.0<br />
27.0<br />
V<br />
4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0<br />
Page 13 1/16/2004
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