TPS54355PWPR

The TPS54355PWPR from Texas Instruments is a medium output current synchronous buck PWM converter. It features an integrated high-side MOSFET and a gate driver for an optional low-side external MOSFET. This device is designed for high efficiency at 3A continuous output current, with a peak MOSFET switch rating of 4.5A.

Key electrical specifications include a 4.5V to 20V input voltage range and a fixed 2.5V output voltage. The converter operates with a wide PWM frequency range, fixed at 250 kHz or 500 kHz, or adjustable from 250 kHz to 700 kHz. It is internally compensated for a low parts count and synchronizes to an external clock, with 180° out-of-phase synchronization capability.

The TPS54355PWPR is built for reliability, featuring internal slow start, peak current limit, and thermal shutdown protection. It also includes adjustable undervoltage lockout and a power good output to indicate valid output conditions. The device is housed in a 16-pin TSSOP PowerPAD package, suitable for surface mounting.

Applications for the TPS54355PWPR include industrial and commercial low power systems, LCD monitors and TVs, computer peripherals, and point-of-load regulation for high-performance DSPs, FPGAs, ASICs, and microprocessors.