Catalog
4.5-V to 17-V, 6-A synchronous SWIFT™ buck converter
Key Features
• Integrated 26 mΩ and 19 mΩ MOSFETsSplit Power Rail: 1.6 V to 17 V on PVIN200-kHz to 1.6-MHz Switching FrequencySynchronizes to External Clock0.8 V ±1% Voltage Reference OvertemperatureLow 2-µA Shutdown Quiescent CurrentMonotonic Start-Up into Prebiased Outputs–40°C to 150°C Operating Junction Temperature RangeAdjustable Slow Start and Power SequencingPower Good Output Monitor for Undervoltage and OvervoltageAdjustable Input Undervoltage LockoutFor SWIFT™ Documentation, Visithttp://www.ti.com/swiftCreate a Custom Design Using the TPS54620 With theWEBENCH Power DesignerIntegrated 26 mΩ and 19 mΩ MOSFETsSplit Power Rail: 1.6 V to 17 V on PVIN200-kHz to 1.6-MHz Switching FrequencySynchronizes to External Clock0.8 V ±1% Voltage Reference OvertemperatureLow 2-µA Shutdown Quiescent CurrentMonotonic Start-Up into Prebiased Outputs–40°C to 150°C Operating Junction Temperature RangeAdjustable Slow Start and Power SequencingPower Good Output Monitor for Undervoltage and OvervoltageAdjustable Input Undervoltage LockoutFor SWIFT™ Documentation, Visithttp://www.ti.com/swiftCreate a Custom Design Using the TPS54620 With theWEBENCH Power Designer
Description
AI
The TPS54620 in thermally enhanced 3.50 mm × 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.
The TPS54620 in thermally enhanced 3.50 mm × 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.
