Date: 19/09/2011

30-A step-down regulator with integrated MOSFETs

Texas Instruments Incorporated has introduced a synchronous 30-A step-down regulator with integrated MOSFETs with 90-percent power efficiency and fast transient response in a small 5-mm x 6-mm PowerStack QFN package. The TPS53355 converter targets low-output voltage, high-current applications that demand increased power density, such as notebook computers, embedded computers, servers, storage and telecommunication systems.

TI says the TPS53355 30-A regulator uses a D-CAP mode control feature to achieve a transient response of up to 2 A/µs, which is 20-percent faster than other solutions that use current or voltage mode control.

Key specifications of TPS53355:
Input voltage range up to 15 V; 90-percent efficiency at 30-A, 12 Vin, 1.5 Vout at 500 kHz.
1 percent voltage regulation accuracy.
Eco-Mode auto-skip mode operation.
Selectable switching frequency range of 250 kHz to 1 MHz.


Availability and pricing: The TPS53355 is available in volume now. Suggested resale pricing is $4.65 in 1,000-unit quantities.