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Features

? Transient withstand voltage 600 V

? dV/dt immunity ± 50 V/ns in full temperature

range

? Driver current capability:

– 2 A source typ. at 25 °C

– 2.5 A sink typ. at 25 °C

? Short propagation delay: 85 ns

? Switching times 25 ns rise/fall with 1 nF load

? Integrated bootstrap diode

? Single input and shutdown pin

? Adjustable deadtime

? 3.3 V, 5 V TTL/CMOS inputs with hysteresis

? UVLO on both high-side and low-side sections

? Compact and simplified layout

? Bill of material reduction

? Flexible, easy and fast design

Description

The L6494 is a high-voltage device manufactured

with the BCD6 “offline” technology. It is a single

chip half-bridge gate driver for N-channel power

MOSFETs or IGBTs.

The high-side (floating) section is designed to

stand a DC voltage rail up to 500 V, with 600 V

transient withstand voltage. The logic inputs are

CMOS/TTL compatible down to 3.3 V for easy

interfacing control units such as microcontrollers

or DSP.

The device is a single input gate driver with

programmable deadtime, and also features an

active-low shutdown pin.

Both device outputs can sink 2.5 A and source 2

A, making the L6494 particularly suited for

medium and high capacity power

MOSFETsIGBTs.

The independent UVLO protection circuits

present on both the lower and upper driving

sections prevent the power switches from being

operated in low efficiency or dangerous

conditions.

The integrated bootstrap diode as well as all of

the integrated features of this driver make the

application PCB design simpler and more

compact, and help reducing the overall bill of

material.

Applications

? Motor driver for home appliances, factory

automation, industrial drives and fans

? HID ballasts

? Induction heating

? Welding

? Industrial inverters

? UPS

? Power supply units

? DC-DC converters