1FEATURES
• Single Input (PWM and TTL Compatible)
• High-Current Power FET Driver, 1-A Source
and 2-A Sink
• Auxiliary Output FET Driver, 0.5-A Source and
1-A Sink
• Time Delays Between Power and Auxiliary
Outputs Independently Programmable from 50
to 500-ns
• Time Delay or True Zero-Voltage Operation
Independently Configurable for Each Output
• Switching Frequency to 1 MHz
• Typical 50-ns Propagation Delays
• ENBL Pin Activates 220-μA Sleep Mode
• Power Output is Active-Low in Sleep Mode
• Synchronous Rectifier Driver

DESCRIPTION
These two families of high speed drivers are
designed to provide drive waveforms for
complementary switches. Complementary switch
configurations are commonly used in synchronous
rectification circuits and active clamp/reset circuits,
which provide zero voltage switching. In order to
facilitate the soft switching transitions, independently
programmable delays between the two output
waveforms are provided on these drivers. The delay
pins also have true-zero voltage-sensing capability
which allows immediate activation of the
corresponding switch when zero voltage is applied.
These devices require a PWM-type input to operate
and interface with commonly available PWM
controllers.
In the UC1714 series, the AUX output is inverted to
allow driving a p-channel MOSFET. In the UC1715
series, the two outputs are configured in a true
complementary fashion.