lm5100amx National Semiconductor Corporation, lm5100amx Datasheet - Page 12

• Manufacturer Part Number: lm5100amx
• Description: 3a, 2a And 1a High Voltage High-side And Low-side Gate Drivers
• Manufacturer: National Semiconductor Corporation

Power Dissipation Considerations
Diode Power Dissipation V
= 50V
IN
(Continued)
Larger capacitive loads require more energy to recharge the
bootstrap capacitor resulting in more losses. Higher input
voltages (V
) to the half bridge result in higher reverse
IN
recovery losses. The following plot was generated based on
calculations and lab measurements of the diode recovery
time and current under several operating conditions. This
can be useful for approximating the diode power dissipation.
The total IC power dissipation can be estimated from the
previous plots by summing the gate drive losses with the
bootstrap diode losses for the intended application.
20203106
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