Product details

Vin (Min) (V) 2.95 Vin (Max) (V) 6 Vout (Min) (V) 0.8 Vout (Max) (V) 4.5 Iout (Max) (A) 6 Iq (Typ) (uA) 515 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2000 Features Enable, Frequency Synchronization, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, UVLO Adjustable Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 2.95 Vin (Max) (V) 6 Vout (Min) (V) 0.8 Vout (Max) (V) 4.5 Iout (Max) (A) 6 Iq (Typ) (uA) 515 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2000 Features Enable, Frequency Synchronization, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, UVLO Adjustable Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1
WQFN (RTE) 16 9 mm² 3 x 3
  • Two 12-mΩ (typical) MOSFETs for high efficiency at 6-A loads
  • 300-kHz to 2-MHz switching frequency
  • 0.8-V ±1% Voltage reference over temperature (–40°C to +150°C)
  • Synchronizes to external clock
  • Adjustable slow start and sequencing
  • UV and OV power-good output
  • –40°C to 150°C Operating Junction Temperature Range
  • Thermally enhanced 3-mm × 3-mm, 16-pin WQFN package
  • Pin-Compatible to TPS54418
  • Create a custom design using the TPS54618 with the WEBENCH® Power Designer
  • Two 12-mΩ (typical) MOSFETs for high efficiency at 6-A loads
  • 300-kHz to 2-MHz switching frequency
  • 0.8-V ±1% Voltage reference over temperature (–40°C to +150°C)
  • Synchronizes to external clock
  • Adjustable slow start and sequencing
  • UV and OV power-good output
  • –40°C to 150°C Operating Junction Temperature Range
  • Thermally enhanced 3-mm × 3-mm, 16-pin WQFN package
  • Pin-Compatible to TPS54418
  • Create a custom design using the TPS54618 with the WEBENCH® Power Designer

The TPS54618 device is a full-featured 6-V, 6-A, synchronous step-down current-mode converter with two integrated MOSFETs.

The TPS54618 enables small designs by integrating the MOSFETs, implementing current-mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small, 3-mm × 3-mm, thermally-enhanced WQFN package.

The TPS54618 provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.

Efficiency is maximized through the integrated
12-mΩ MOSFETs and 515-µA typical supply current. Using the enable pin, shutdown supply current is reduced to 5.5-µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output-voltage start-up ramp is controlled by the slow-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage.

Frequency foldback and thermal shutdown protect the device during an overcurrent condition.

For more SWIFT™ documentation, see the TI website at www.ti.com/swift.

The TPS54618 device is a full-featured 6-V, 6-A, synchronous step-down current-mode converter with two integrated MOSFETs.

The TPS54618 enables small designs by integrating the MOSFETs, implementing current-mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small, 3-mm × 3-mm, thermally-enhanced WQFN package.

The TPS54618 provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.

Efficiency is maximized through the integrated
12-mΩ MOSFETs and 515-µA typical supply current. Using the enable pin, shutdown supply current is reduced to 5.5-µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output-voltage start-up ramp is controlled by the slow-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage.

Frequency foldback and thermal shutdown protect the device during an overcurrent condition.

For more SWIFT™ documentation, see the TI website at www.ti.com/swift.

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Technical documentation

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Type Title Date
* Data sheet TPS54618 2.95-V to 6-V, 6-A, Synchronous Step-Down SWIFT Converter datasheet (Rev. F) 24 May 2019
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) 26 Jul 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Application note Calculating Efficiency (Rev. A) 06 Mar 2020
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Application note Solve Point-of-Load Power Design Challenges: Single Board Computer Applications 24 Aug 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Semiconductor and IC Package Thermal Metrics (Rev. C) 19 Apr 2016
User guide TPS54618EVM-606, 6-A SWIFT Regulator Evaluation Module (Rev. A) 05 Mar 2012
Application note Understanding Thermal Dissipation and Design of a Heatsink 04 May 2011
Application note Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) 15 Sep 2010

Design & development

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

Evaluation board

TPS54618EVM-606 — Evaluation Module for TPS54618 Synchronous Step-Down SWIFT™ DC/DC Converter

The TPS54618EVM-606 is a fully assembled and tested curcuit for evaluating the TPS54618 6A, 2MHz Synchronous Step-Down SWIFT DC/DC Converter. The TPS54618EVM-606 operates from a 3V to 6V input and delivers a 1.8V output at 6A. The same board may be modified to provide different output voltages. (...)
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Simulation model

TPS54618 Unencrypted PSpice Transient Model Package (Rev. B)

SLVM349B.ZIP (50 KB) - PSpice Model
Simulation model

TPS54618 Unencrypted PSpice Average Model Package (Rev. A)

SLVM546A.ZIP (78 KB) - PSpice Model
Simulation model

TPS54618 TINA-TI Average Spice Model

SLVM550.ZIP (7 KB) - TINA-TI Spice Model
Simulation model

TPS54618 TINA-TI Average Reference Design

SLVM551.TSC (217 KB) - TINA-TI Reference Design
Simulation model

TPS54618 TINA-TI Transient Spice Model

SLVM675.ZIP (64 KB) - TINA-TI Spice Model
Simulation model

TPS54618 TINA-TI Transient Reference Design

SLVM676.TSC (895 KB) - TINA-TI Reference Design
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Calculation tool

TPS54620DESIGN-CALC — TPS54620 & TPS54XXX Current-Mode Step-Down Converter Design Calculator

The Design Calculator Plus Application Note (SLVA352A) Calculator Tool calculates the critical external component values for the TPS54620/TPS54622/TPS54521/TPS54320/TPS54618/TPS54418/TPS54318/TPS54218/TPS54319. The calculator includes power stage design, feature design and Type II and Type III (...)
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WQFN (RTE) 16 View options

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