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 2007 Semtech Corp.

www.semtech.com

SC1301A/B

PRELIMINARY

POWER MANAGEMENT

Thermal Information

The lifetime and performance of a driver is basically de-

termined by the drive power requirements of the load,

the thermal characteristics of the driver package and its

cooling method. The driver’s junction temperature must

be kept within the rated limit at all times. The application

system has to effectively remove the heat generated in

the driver in order for proper functions and performance.

protection circuit will be triggered to shut down the gate

driver.

As shown in the power derating table, the SC1301A/B

has a power limit of 385mW when the ambient tempera-

for the driver will be 154mW. When the ambient tem-

power dissipation for the driver should be derated ac-

cording to the table. For each degree increasing of the

ambient temperature, 3.85mW decreasing should be

applied to the driver power dissipation. Possible cooling

methods may include using big pads, natural air-cooling

by a careful layout and forced air-cooling if necessary.

Applications Information (Cont.)

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