TPS54377

用于预偏置输出的 3V 至 6V 输入、3A 同步降压 SWIFT™ 转换器

As a member of the SWIFT™ family of dc/dc regulators, the low-input-voltage high-output-current synchronous-buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that provides high performance under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally and externally set slow-start circuit to limit in-rush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing.

For reliable power up in output precharge applications, the TPS54377 is designed to only source current during start-up.

The TPS54377 device is available in a thermally enhanced 24-pin QFN RHF PowerPAD package, which eliminates bulky heatsinks. provides evaluation modules and the SWIFT designer software tool to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.

.

60-m MOSFET Switches for High Efficiency at 3-A Continuous Output Current

.

Adjustable Output Voltage Down to 0.9 V With 1% Accuracy

.

Switching Frequency: Adjustable From

280 kHz to 1600 kHz

.

Disabled Current Sinking During Start-Up

.

Fast Transient Response

.

Load Protected by Peak Current Limit and Thermal Shutdown

.

Integrated Solution Reduces Board Area and Total Cost

.

Spacing Saving 4mm x 5mm QFN Packaging

.

For SWIFT Documentation, Application Notes, and Design Software, see the TI website at www.ti.com/swift

.

APPLICATIONS

.

Low-Voltage, High-Density Systems With Power Distributed at 5 V or 3.3 V

.

Point of Load Regulation for High Performance DSPs, FPGAs, ASICs, and Microprocessors

.

Broadband, Networking and Optical Communications Infrastructure

SWIFT, PowerPAD are trademarks of Texas Instruments.