TI Launches 30-A, 15-V Synchronous Buck Converter with 90% Efficiency
High-performance voltage regulators with integrated FETs are available in the new PowerStack™ package.
Provides the highest efficiency and fastest transient current protection
DALLAS, Sept. 22, 2011 – Texas Instruments (TI) ( NASDAQ: TXN ) today introduced a 30-A synchronous step-down regulator with integrated MOSFETs that delivers 90 percent efficiency and fast transient response in a small 5-mm x 6-mm PowerStack QFN package. The TPS53355 converter delivers high performance for low-output-voltage, high-current applications that require higher power density, such as notebook computers, embedded computers, servers, storage and communications systems. (For samples, SwitcherPro™ simulation models and evaluation modules, visit www.ti.com/tps53355-prkr .)

The TPS53355 30A regulator uses D-CAP™ mode control to achieve transient response of up to 2A/µs, which is 20% faster than other solutions using conventional current- or voltage-mode control. The D-CAP mode control feature not only minimizes the use of external components, but also eliminates the need for loop compensation.
TPS53355 Features and Benefits
• High efficiency and high performance: Provides 90% efficiency at 1.5Vout with input voltage range up to 15V and 30A, 12Vin, 500kHz
• Accurate power delivery: 1% voltage regulation accuracy
• Light-load efficiency: Eco-Mode™ auto-skip mode operation
• Smallest solution size: Selectable switching frequency range from 250kHz to 1MHz and a compact QFN package integrating high-side and low-side FETs provide a 20% smaller solution size than competitive products.
Price and availability
The TPS53355 is now in production through TI and its authorized distributors in a unique 22-pin, 5 mm x 6 mm QFN PowerStack package that delivers exceptional thermal performance, improved current capability, and efficiency while helping save board space. Pricing starts at US$4.65 in 1,000-unit quantities.
Learn more about TI's power management voltage regulators for high-current, low-voltage designs.
• Order the TPS53355EVM-743 evaluation module
• TPS56121 and TPS56221 15A, 25A converters with integrated FETs
• Create power designs in under 2 minutes with TI's free, online SwitcherPro design tool
• Chat with power management experts in the TI E2E™ Community















