Buck controller offers high step down efficiency

The device provides high step down efficiency for a variety of load currents, from under 5 to over 25A, enabling it to support virtually every 12, 24, or 48 volt high current buck requirement for automotive and industrial applications. For heavy load applications, designers often have to balance power conversion efficiency against size and noise constraints. This usually means they have to make trade offs among component selection, switching frequency, and output ripple. The ISL78268 buck solution has been designed specifically so that it can be used regardless of the optimisation balance. The buck controller enables easy conversion from high primary rails (typically 12, 24 or 48V) to lower secondary rails (typically 3.3, 5.0 or 12V). It integrates both a peak current mode synchronous PWM controller and a dedicated constant current control loop as well as high side and low side FET drivers that have adaptive dead time control.