ISL89165: High Speed, Dual Channel, 6A, Power MOSFET Driver with Enable Inputs

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-through currents in the output stage.

The start-up sequence is designed 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.

Key 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 (θJC = 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
Typical Diagram
Application Notes
TitleTypeUpdatedSizeOther Languages
AN1116: Elantec CMOS applicationsPDF13 Nov 2014231 KB
Datasheets
TitleTypeUpdatedSizeOther Languages
ISL89163, ISL89164, ISL89165 DatasheetPDF13 Oct 2016442 KB
White Papers
TitleTypeUpdatedSizeOther Languages
Five Easy Steps to Create a Multi-Load Power SolutionPDF30 Jan 2017502 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
ISL89165FBEAZ8 Ld SOIC0.07581260RoHS
ISL89165FBEAZ-T8 Ld SOIC T+R0.07581260RoHS
ISL89165FBEBZ8 Ld SOIC0.07581260RoHS
ISL89165FBEBZ-T8 Ld SOIC T+R0.07581260RoHS
ISL89165FBECZ8 Ld SOIC0.0758260RoHS
ISL89165FBECZ-T8 Ld SOIC T+R0.0758260RoHS
ISL89165FRTAZ8 Ld DFN0.02283260RoHS
ISL89165FRTAZ-T8 Ld DFN T+R0.02283260RoHS
ISL89165FRTBZ8 Ld DFN0.02283260RoHS
ISL89165FRTBZ-T8 Ld DFN T+R0.02283260RoHS
ISL89165FRTCZ8 Ld DFN0.02283260RoHS
ISL89165FRTCZ-T8 Ld DFN T+R0.02283260RoHS
ISL89163, ISL89164, ISL89165 Datasheet 13 Oct 2016
8 Ld SOIC T+R ISL89168
8 Ld DFN T+R ISL12024IRTC
AN1116: Elantec CMOS applications 13 Nov 2014
Five Easy Steps to Create a Multi-Load Power Solution 30 Jan 2017