The ISL89163, ISL89164, and ISL89165 are high-speed, 6A,

dual channel MOSFET drivers with enable inputs. These parts are

very similar to the ISL89160, ISL89161, ISL89162 drivers but

with an added enable input for each channel occupying NC pins 1

and 8 of the ISL89160, ISL89161, ISL89162.

Precision thresholds on all logic inputs allow the use of external

RC circuits to generate accurate and stable time delays on both

the main channel inputs, INA and INB, and the enable inputs,

ENA and ENB. The precision delays capable of these precise logic

thresholds makes these parts very useful for dead time control

and synchronous rectifiers. Note that the ENable and INput logic

inputs can be interchanged for alternate logic implementations.

Three input logic thresholds are available: 3.3V (CMOS), 5.0V

(CMOS or TTL compatible), and CMOS thresholds that are

proportional to VDD.

At high switching frequencies, these MOSFET drivers use very

little internal bias currents. Separate, non-overlapping drive

circuits are used to drive each CMOS output FET to prevent

shoot-thru currents in the output stage.

The start-up sequence is design to prevent unexpected glitches

when VDD is being turned on or turned off. When VDD < ~1V, an

internal 10kΩ resistor between the output and ground helps to

keep the output voltage low. When ~1V < VDD < UV, both outputs

are driven low with very low resistance and the logic inputs are

ignored. This insures that the driven FETs are off. When

VDD > UVLO, and after a short delay, the outputs now respond to

the logic inputs.

Features

• Dual output, 6A peak currents, can be paralleled

• Dual AND-ed input logic, (INput and ENable)

• Typical ON-resistance <1Ω

• Specified Miller plateau drive currents

• Very low thermal impedance (JC = 3°C/W)

• Hysteretic Input logic levels for 3.3V CMOS, 5V CMOS, TTL and

Logic levels proportional to VDD

• Precision threshold inputs for time delays with external RC

components

• 20ns rise and fall time driving a 10nF load.

Applications

• Synchronous Rectifier (SR) Driver

• Switch mode power supplies

• Motor Drives, Class D amplifiers, UPS, Inverters

• Pulse Transformer driver

• Clock/Line driver