New Industry Products

Intersil Announces New Dual Synchronous Buck Regulator

November 21, 2006 by Jeff Shepard

Intersil Corp. announced a new dual synchronous buck regulator featuring integrated MOSFETs and high efficiency user-configurable power blocks. Intersil's ISL65426 provides two Logic-Programmable or Resistor-Adjustable output voltages and the added flexibility of user-programmable load currents for each output (with 6A total output current from both outputs).

The ISL65426 is a high efficiency dual output monolithic synchronous buck converter operating over an input voltage range of 2.375 to 5.5V. This single chip power solution provides two output voltages which are selectable or externally adjustable from 1V to 80% of the supply voltage while delivering up to 6A of total output current. The two PWMs are synchronized 180° out of phase reducing the RMS input current and ripple voltage.

The ISL65426 switches at a fixed frequency of 1MHz and utilizes current-mode control with integrated compensation to minimize the size and number of external components and provide excellent transient response. The internal synchronous power switches are optimized for good thermal performance, high efficiency, and eliminate the need for an external Schottky diode.