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TPS54622-EP

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Enhanced product 17-V, 6-A synchronous step-down switcher

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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 17 Vout (Min) (V) 0.6 Vout (Max) (V) 15 Iout (Max) (A) 6 Iq (Typ) (uA) 600 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 1600 Features Enable, Frequency Synchronization, Power Good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking Operating temperature range (C) -55 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN (RHL) 14 12 mm² 3.5 x 3.5 open-in-new Find other Buck converters (integrated switch)

Features

  • Integrated 26-mΩ and 19-mΩ MOSFETs
  • Split power rail: 1.6 V to 17 V on PVIN
  • 200-kHz to 1.6-MHz switching frequency
  • Synchronizes to external clock
  • 0.6V ±1% voltage reference overtemperature
  • Hiccup current limit
  • Monotonic start-up into prebiased outputs
  • Adjustable slow start and power sequencing
  • Power good output monitor for undervoltage and overvoltage
  • Adjustable input undervoltage lockout
  • Pin compatible with TPS54620

  • For SWIFT™ documentation, visit http://www.ti.com/swift
  • Create a custom design using the TPS54622-EP with the WEBENCH Power Designer

All trademarks are the property of their respective owners.

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Description

The TPS54622-EP device in thermally enhanced 3.5-mm × 3.5-mm VQFN package is a full-featured 17-V, 6-A synchronous step-down converter 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 that prevents current runaway. There is also a low-side sinking current limit that turns off the low-side MOSFET to prevent excessive reverse current. Hiccup protection is triggered if the overcurrent condition has persisted for longer than the preset time. Thermal hiccup protection disables the device when the die temperature exceeds the thermal shutdown temperature and enables the part again after the built-in thermal shutdown hiccup time.

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Technical documentation

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No results found. Please clear your search and try again. View all 2
Type Title Date
* Datasheet TPS54622-EP 17-V Input, 6-A Output Synchronous Step Down Switcher datasheet Dec. 14, 2020
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
25
Description
The TPS54622EVM-012 is a fully assembled and tested circuit for evaluating the TPS54622 Synchronous Step Down SWIFT™ Converter with Hiccup Overcurrent Protection. The TPS54622EVM-012 operates from a 8V to 17V input and provides a 3.3V output at 6A.
Features
  • Integrated Monolithic MOSFETs
  • 200KHz to 1.6MHz Adjustable Switching Frequency
  • 0.6V Reference
  • Forced CCM
  • Light Load Efficiency with Pulse Skipping
  • Synchronizes to External Clock
  • Integrated Tracking Function
  • Hiccup Current Limiting Reduces Power Consumption During Short-Circuit
  • Thermally Enhanced 14-Pin 3.5mm (...)

Design tools & simulation

SIMULATION MODEL Download
SLVMDH6.ZIP (82 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

Package Pins Download
VQFN (RHL) 14 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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