The high-current output stage of the UCD7K device family is capable of supplying ±4-A peak current pulses and swings to both VDD and GND. The driver outputs follows the state of the IN pin provided that the VDD and 3V3 voltages are above their respective under-voltage lockout threshold.

The drive output utilizes Texas Instruments’ TrueDrive™ architecture, which delivers rated current into the gate of a MOSFET when it is most needed during the Miller plateau region of the switching transition providing efficiency gains.

TrueDrive™ consists of pullup/ pulldown circuits using bipolar and MOSFET transistors in parallel. The peak output current rating is the combined current from the bipolar and MOSFET transistors. The output resistance is the R_DS(on) of the MOSFET transistor when the voltage on the driver output is less than the saturation voltage of the bipolar transistor. This hybrid output stage also allows efficient current sourcing at low supply voltages.

Each output stage also provides a very low impedance to overshoot and undershoot due to the body diode of the external MOSFET. This means that in many cases, external-schottky-clamp diodes are not required.