ISL6571

® ISL6571 Data Sheet February 2003 FN9082.2 Complementary MOSFET Driver and Synchronous Half-Bridge Switch The Intersil ISL6571 provides a new approach for implementing a synchronous rectified buck switching regulator. The ISL6571 replaces two power MOSFETs, a Schottky diode, two gate drivers and synchronous control circuitry. Its main applications address high-density power conversion circuits including multiphase-topology computer microprocessor core power regulators, ASIC and memory array regulators, etc. Another useful feature of the ISL6571 is the compatibility with three-state input control: left open, the PWM input turns off both output drives. The ISL6571 operates in continuous conduction mode reducing EMI constraints and enabling high bandwidth operation. Features Improved Performance over Conventional Synchronous Buck Converter using Discrete Components Optimal Deadtime Provided by Adaptive Shoot-Through Switching Frequency up to 1MHz - High-Bandwidth, Fast Transient Response - Small, Low Profile Converters Reduced Connection Parasitics between Discrete Components - Low Electromagnetic Emissions Low Profile, Low Thermal Impedance Packaging - High Power Density Applications Ordering Information TEMP. PART NUMBER RANGE (oC) ISL6571CR ISL6571CR-T ISL6571EVAL1 0 to 70 0 to 70 PACKAGE 68 Ld MLFP 68 Ld MLFP PKG. NO. L68.10x10A L68.10x10A Applications Multiphase Power Regulators Low-Voltage Switchmode Power Conversion High-Density Power Converters Eva...