TPS54810

4.5 至 5.5V 输入、8A 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 enables maximum performance under transient conditions and flexibility in choosing the output filter L and C components; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 3.8 V; an internally or 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.

The TPS54810 is available in a thermally enhanced 28-pin TSSOP PWP PowerPAD™ package, which eliminates bulky heatsinks. provides evaluation modules and the SWIFT™ designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

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30-m MOSFET Switches for High Efficiency at 8-A Continuous Output

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0.9-V to 3.3-V Adjustable Output Voltage Range With 1% Accuracy

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Externally Compensated

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Fast Transient Response

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Wide PWM Frequency:

   Fixed 350 kHz, 550 kHz or

   Adjustable 280 kHz to 700 kHz

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Load Protected by Peak Current Limit and Thermal Shutdown

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Integrated Solution Reduces Board Area and Total Cost

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APPLICATIONS

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

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

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Broadband, Networking, and Optical Communications Infrastructure

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Portable Computing/Notebook PCs

PowerPAD and SWIFT are trademarks of Texas Instruments.