TPS54317

3V 至 6V 输入、3A 同步降压 SWIFT™ 转换器

As members 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.

The TPS54317 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.

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

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Adjustable Output Voltage Down to 0.9 V With 1% Accuracy

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Switching Frequency: Adjustable From 280 kHz to 1600 kHz

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Externally Compensated for Design Flexibility

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Fast Transient Response

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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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Spacing Saving 4mm x 5mm QFN Packaging

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

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APPLICATIONS

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