High-efficiency current-mode step-down DC-DC regulators

The Analog Devices ADP2165 and ADP2166 ranges of step-down DC-DC regulators are now available from Mouser stock. They are 5A and 6A high efficiency, current mode control devices with an integrated 19mohm high-side FET and a 15mohm synchronous rectified FET. The devices combine a small size, 4mm × 4mm LFCSP package with an accurate current limit, resulting in a smaller inductor size and a high power density, point of load solution. They feature power-good output, precision enable input, and voltage tracking input. The switching frequency can be programmed from 250kHz to 1.4MHz, or it can be fixed at 620kHz or 1.2MHz. The synchronization function allows the switching frequency to synchronize to an external clock, minimizing the electromagnetic interference (EMI) of the system. ADP2165 and ADP2166 are designed to be extremely flexible with the addition of a minimal amount of external components to program soft-start and control-loop compensation. Applications include Point of load (PoL) regulation, communications, networking, high-end consumer goods, industrial, instrumentation and healthcare products. Also available, the ADP2165-EVALZ is a full-featured development board that provides an easy way to evaluate the ADP2165.