Power Supply

60V sync buck controller suggested as better option than DC/DC module for PoL

Intersil launched ISL8117 synchronous step-down PWM controller with low duty cycle of 40ns minimum on time supporting direct step-down conversion from 48V to a 1V PoL. ISL8117 targets multiple applications such as industrial, factory automation, medical and communications infrastructure applications. ISL8117 designed to take lesser space, cost effective and reliable than DC/DC modules in high voltage applications where a lower output voltage is required. The ISL8117 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. ISL8117 offers adjustable frequency up to 2MHz. Intersil says with ISL8117, power supply 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. The ISL8117's low pin count and layout friendly pin architecture also minimizes the number of overlapping traces, further improving power supply performance, adds Intersil. "The ISL8117 buck controller addresses a growing need for direct POL conversion from very high input voltage such as 48V to 1V output," said Mark Downing, senior vice president of Infrastructure and Industrial Power Products at Intersil. "The unique ability to support light...
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