TPS54620RGYR 6A High-Efficiency Step-Down Converter with 4.5-17V Input Adjustable Output 1.5% Accuracy 1.2MHz Switching Thermal Protection and Power Good Signal

TPS54620RGYR 6A High-Efficiency Step-Down Converter with 4.5-17V Input Adjustable Output 1.5% Accuracy 1.2MHz Switching Thermal Protection andamp; Power Good Signal

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Features

andbull; Integrated 26 mΩ and 19 mΩ MOSFETs

andbull; Split Power Rail: 1.6 V to 17 V on PVIN

andbull; 200-kHz to 1.6-MHz Switching Frequency

andbull; Synchronizes to External Clock

andbull; 0.8 Vandplusmn;1%Voltage Reference Overtemperature

andbull; Low2-andmicro;A Shutdown Quiescent Current

andbull; Monotonic Start-Up into Prebiased Outputs

andbull;andndash;40anddeg;C to 150anddeg;C Operating Junction Temperature Range

andbull; Adjustable Slow Start and Power Sequencing

andbull; Power Good Output Monitor for Undervoltage and Overvoltage

andbull; Adjustable Input Undervoltage Lockout

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Applications

andbull; High Density Distributed Power Systems

andbull; High Performance Point of Load Regulation

andbull; Broadband, Networking and Optical Communications Infrastructure

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Description

The TPS54620 in thermally enhanced 3.50 mm andtimes; 3.50 mm QFN package is a full featured 17-V, 6-A, synchronous, step-down converter which is optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count, and by selecting a high switching frequency, reducing the footprint of the inductor.

The output voltage start-up ramp is controlled by the SS/TR pin which allows operation as either a stand alone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open-drain power good pins.

Cycle-by-cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. There is also a low-side sinking current limit that turns off the low-side MOSFET to prevent excessive reverse current. Thermal shutdown disables the part when die temperature exceeds thermal shutdown temperature.

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INFORMATION

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Drawing

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• High quality products --- our offers are 100% new and original, ROHS
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• Fast delivery --- we will ship the goods within 1-3 working days after the payment confirmed.

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