The ISL8117 is the first 60-V synchronous buck controller able to bypass the intermediate step-down conversion stage traditionally employed in industrial applications. The controller has 40-ns duty cycle that enables the direct step-down conversion from 48 to a 1-V point-of-load. It makes it possible for designers to reduce system complexity and solution cost in industrial, factory automation, medical and communications infrastructure applications.
The buck controller offers an alternative for applications where the Vout to Vin ratio is low. The device uses valley current mode modulation with adaptive slope compensation to enable stable operation for a wide range of Vin and Vout combinations, with no external compensation required. System designers can also use the adjustable frequency up to 2 MHz to optimize power supply cost, size and efficiency. Design engineers can design a complete dc/dc buck conversion solution with only 10 components, including MOSFETs and passives, and achieve up to 98% conversion efficiency with 1.5% output voltage accuracy.
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