Dual MOSFET driver is well protected

Edited by the Electronicstalk editorial team Jul 12, 2004

The new Intersil Endura ISL6614 is an advanced two-channel synchronous-buck MOSFET driver IC designed for high-current DC/DC convertors.

The new Intersil Endura ISL6614 is an advanced two-channel synchronous-buck MOSFET driver IC designed for high-current DC/DC convertors used in a wide range of datacomms, telecomms, point-of-load and computing applications.

A power convertor using the ISL6614 and one of Intersil's ISL65XX PWM controllers results in a solution that delivers the industry's highest performance-to-cost value.

The ISL6614 can sink up to 3A of gate current for synchronous-buck configured N-channel MOSFETs and integrates a wide array of protection features, such as industry-leading pre-enable overvoltage protection.

The pre-enable overvoltage protection function becomes operational before the FET driver VCC exceeds its turn-on (rising) threshold.

The ISL6614 drives both upper and lower MOSFET gates over a range of 5 to 12V.

The three-state PWM input feature, working together with Intersil's multiphase PWM controllers, prevents a negative transient on the output voltage when the output is shut down.

This feature eliminates the Schottky diode that is used in some systems.

Advanced adaptive zero shoot-through protection is integrated to prevent both the upper and lower MOSFETs from conducting simultaneously and to minimise the dead time.

An overtemperature protection feature prevents failures resulting from excessive power dissipation by shutting off the outputs when its junction temperature exceeds 150C (typically).

The ISL6614 is available now in a choice of SOIC (ISL6614CB) or near-chip-scale QFN (ISL6614CR) packages.

The suggested resale price for 100- to 999-unit quantities is $1.53 for each ISL6614CB IC and $1.63 for each ISL6614CR IC.

ICs are available on tape and reel and in Pb-free versions (ISL6614CBZ and ISL6614CRZ).