GENERAL DESCRIPTION

The ADP3182 is a highly efficient multiphase, synchronous, buck-switching regulator controller optimized for converting a 12 V main supply into a high current, low voltage supply for use in point-of-load (POL) applications. It uses a multimode PWM architecture to drive the logic-level outputs at a programmable switching frequency that can be optimized for VR size and efficiency. The phase relationship of the output signals can be programmed to provide 1-, 2-, or 3-phase operation, allowing for the construction of up to three complementary buckswitching stages. The ADP3182 also provides accurate and reliable short-circuit protection and adjustable current limiting.

FEATURES

Selectable 1-, 2-, or 3-phase operation at up to 1 MHz per

phase

±2 worst-case differential sensing error over temperature

Externally adjustable 0.8 V to >5 V output from a 12 V supply

Logic-level PWM outputs for interface to external high

power drivers

Active current balancing between all output phases

Built-in power good/crowbar functions

Programmable short-circuit protection with programmable

latch-off delay

APPLICATIONS

Auxiliary supplies

DDR memory supplies

Point-of-load modules