The ISL6205 is a high-voltage, high-frequency, dual MOSFET driver specifically designed to drive two N-Channel power MOSFETs in a synchronous rectified buck converter topology in mobile computing applications. This driver combined with an ISL6223 or other Intersil Multi-Phase Buck PWM controllers forms a complete single-stage core-voltage regulator solution for advanced mobile microprocessors.

The ISL6205 allows users to select a gate voltage ranging from 5V to 12V for the lower MOSFET in the synchronous rectified buck converter. Using a 12V gate voltage reduces the RDS(ON) and the conduction loss in the MOSFET. The upper gate is required to run at 5V.

The ISL6205 features a three-state PWM input that, working together with any Intersil multiphase PWM controllers, will prevent a negative transient on the output voltage when the output is being shut down. This feature eliminates the schottky diode that is usually seen in a microprocessor power system for protecting the microprocessor from any reversed output voltage damage.

Features

• Drives Two N-Channel MOSFETs

• Adaptive Shoot-Through Protection

• 25V Operation voltage

• Supports High Switching Frequency

- Fast Output Rise Time

- Propagation Delay 30ns

• Small 8 Lead SOIC Package

• Dual Gate-Drive Voltages for the Lower MOSFET for Optimal Efficiency

• Three-State Input for Output Stage Shutdown

• Supply Under Voltage Protection

• 5V or 12V Drive for the Lower MOSFET

Applications

• Core Voltage Supplies for Intel Mobile Pentium® III, AMD® Mobile Athlon™ or Duron™ Microprocessors

• High Frequency Low Profile DC-DC Converters

• High Current Low Voltage DC-DC Converters

• High Input Voltage DC-DC Converters