4-V to 18-V input, advanced current mode, 12-A, synchronous SWIFT™ step-down converter

The TPS543A22 is a

high-efficiency 18V, 12A synchronous buck converter employing an

internally compensated, fixed-frequency advanced current mode (ACM) control

architecture, which while always operating under FCCM, generates output voltages

from 0.5V to 7V. The device is capable of providing high efficiency while operating

at a switching frequency up to 2.2MHz, making the device an excellent choice for

designs requiring a small solution size. The fixed frequency controller can operate

from 500kHz to 2.2MHz and can be synchronized to an external clock using the SYNC

pin. Additional features include a high accuracy voltage reference, two-wire remote

sense, selectable soft-start times, monotonic start-up into prebiased outputs,

selectable current limits, adjustable UVLO through the EN pin, and a full suite of

fault protections.

The TPS543A22 is

available in a small 2.5mm × 4.5mm HotRod™ WQFN-FCRLF package.