Buck controller supports new levels of flexibility for high-current designs

Intersil Corporation (Milpitas, CA) announced the ISL78268 55V synchronous buck controller with 3A integrated high-side and low-side drivers. The most versatile high voltage buck solution available, the ISL78268 buck controller provides very high step-down efficiency for a wide 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. Other features include:

• Tolerance of 55V inputs, making it ideal for automotive applications.
• Support for the 12V clamped load-dump specifications and new 48V power system being adopted by European OEMs.
• Integrated 3A driver, allowing the ISL78268 buck controller to sharply switch small power FETs or parallel combinations of large FETs.
• Adjustable switching frequency from 50kHz to 1.1MHz.
• Low shutdown current of 3uA.

For more information on the ISL78268, visit www.intersil.com.

Intersil Corporation is a leader in the design and manufacture of high performance analog semiconductors. The company's products are targeted at some of the fastest growing segments of the industry: flat panel displays, mobile phones, other handheld systems and notebook computers. Intersil's product portfolio provides power management and analog signal processing. Intersil products include battery management ICs, hot-swap controllers, linear regulators, supervisory ICs, switching DC/DC regulators, power MOSFET drivers, optical storage laser diode drivers, DSL line drivers, video and high performance op amps , data converters, interface ICs, analog switches and multiplexers, crosspoint switches, IP voice devices, and ICs for military, space, and radiation-resistant applications.

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