AN606
Vishay Siliconix
Current-Sensing Power
MOSFETs
Kandarp Pandya
INTRODUCTION
Vishay Siliconix current-sensing power
MOSFETs offer a simple means of incorporating a protection feature into an electronic control circuit and avoiding catastrophic failures resulting from overcurrent (overload) and/or short-circuit conditions.
The device package is a modified D2PAK with five pins.
The
MOSFET termination retains the standard D2PAK footprint for a three-pin device.
The additional two pins provide termination for a current-sense output and an internal Kelvin connection to the source.
For current sensing, the
MOSFET design employs a small number of the total number of
MOSFET cells in a known ra...