4.5V to 17V Input, Current Mode, 4A Synchronous SWIFT™ Step-Down Converter


Product details


Vin (Min) (V) 4.5 Vin (Max) (V) 17 Vout (Min) (V) 0.6 Vout (Max) (V) 12 Iout (Max) (A) 4 Iq (Typ) (uA) 580 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 1600 Features Enable, Frequency Synchronization, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, Soft Start Adjustable Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN-HR (RNV) 18 12 mm² 3.5 x 3.5 open-in-new Find other Buck converters (integrated switch)


  • Small 3.5-mm × 3.5-mm HotRod™ QFN Package
  • Integrated 14.1-mΩ and 6.1-mΩ MOSFETs
  • Peak Current Mode Control With Fast Transient Response
  • 200-kHz to 1.6-MHz Fixed Switching Frequency
  • Synchronizes to External Clock
  • 0.6-V Voltage Reference ±0.85% Over Temperature
  • 0.6-V to 12-V Output Voltage Range
  • Hiccup Current Limit
  • Safe Start-Up into Pre-Biased Output Voltage
  • Adjustable Soft Start and Power Sequencing
  • Adjustable Input Undervoltage Lockout
  • 3-µA Shutdown Current
  • Power Good Output Monitor for Undervoltage and Overvoltage
  • Output Overvoltage Protection
  • Non-latch Thermal Shutdown Protection
  • –40°C to 150°C Operating Junction Temperature
  • Create a Custom Design Using the TPS54424 With the WEBENCH® Power Designer
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The TPS54424 is a full-featured 17-V (19-V maximum), 4-A synchronous step-down DC/DC converter in a 3.5 mm × 3.5 mm HotRod™ QFN package.

The device is optimized for small solution size through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through peak current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor footprint.

The peak current mode control simplifies the loop compensation and provides fast transient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcing current limit protects the device in overload situations. Hiccup limits MOSFET power dissipation if a short circuit or over loading fault persists.

A power good supervisor circuit monitors the regulator output. The PGOOD pin is an open-drain output and goes high impedance when the output voltage is in regulation. An internal deglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.

A dedicated EN pin can be used to control the regulator on/off and adjust the input undervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, which allows operation as either a standalone power supply or in tracking situations.

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Technical documentation

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Type Title Date
* Data sheet TPS54424 4.5-V to 17-V (19-V Maximum) Input, 4-A Synchronous SWIFT™ Step-Down Converter datasheet Jan. 23, 2018
Application note DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications (Rev. A) May 04, 2021
Application note Non-Isolated Point-of-Load Solutions for Tiger Lake in PC Applications (Rev. B) Apr. 29, 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) Apr. 08, 2021
Application note Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) Jan. 08, 2020
Application note Understanding Flip Chip QFN (HotRod) and Standard QFN Performance Differences Jul. 02, 2019
Application note Minimizing Output Ripple During Startup (Rev. A) May 20, 2019
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application note DC/DC Point-of-load Power Solutions for Wired Networking Switch Systems Dec. 11, 2018
Application note Optimizing Layout of the TPS54824 HotRod™ Package for Thermal Performance Nov. 16, 2018
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems Sep. 10, 2018
Application note Solve Point-of-Load Power Design Challenges: Single Board Computer Applications Aug. 24, 2018
Application note Create an Inverting Power Supply Using a Synchronous Step-Down Regulator (Rev. B) Jun. 25, 2018
White paper Measuring various types of low-frequency noise in DC/DC switching converters Feb. 01, 2018
Application note Reducing noise on the output of a switching regulator Jan. 04, 2018
User guide TPS54424EVM-779 4-A, SWIFT™ Regulator Evaluation Module Jul. 21, 2017
Application note Minimizing Output Ripple During Startup Jun. 22, 2017
Application note HotRod QFN Application Note Apr. 09, 2014
Application note Ultra Small 5A, Adjustable Output Reference design using TPS54620 May 21, 2010

Design & development

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

Hardware development


The AFE7700 evaluation module (EVM) is a board used to evaluate the AFE7700 integrated RF transceiver. AFE7700 supports up to four-transmit, four-receive, and two feedback channels (4T4R2F) and integrates phase-locked loops (PLLs) and voltage-controlled oscillators (VCOs) for generation of (...)

  • Evaluates AFE7700 integrated transceiver
  • Simplified digital interface with JESD204B/C; supports up to 29.5-Gbps lane rates
  • JESD subclass 1 for multiple-device synchronization
  • Onboard clocking solution with optional external feed
  • Onboard power-management scheme

The AFE7950 evaluation module (EVM) is an RF-sampling transceiver platform that can be configured to simultaneously support up to four-transmit and six-receive (4T6R) channels. The module evaluates the AFE7950, which is a quad-channel, RF-sampling, analog front end (AFE) with 14-bit (...)

  • Allows evaluation of 4T6R RF-sampling AFE7950 solutions
  • JESD204B/C data interface to simplify digital interface; compliant up to 29.5-Gbps lane rates
  • Supports JESD204B/C for synchronization and compatibility
  • Option for DC-DC-based LDO-less power-management solution
  • Onboard clocking solution supported (...)
document-generic User guide

The TPS54424EVM-779 is an 4-A synchronous converter evaluation module (EVM).  The TPS54424 is a synchronous buck converter, integrating both power MOSFETs to minimize solution size and provide high efficiency at full load. Fixed-frequency peak current-mode control is used to minimize period and (...)

  • Highly efficient with low RDSON MOSFETs
  • Set at 700-kHz switching frequency (Adjustable from 200 kHz ~ 1.6 MHz)
  • Synchronizable to external clock
  • High voltage reference accuracy (1% across temperature)
  • Supports low-voltage out with 0.6-V voltage reference

Design tools & simulation

SLVMC62.ZIP (93 KB) - PSpice Model
SLVMCN3.TSC (153 KB) - TINA-TI Reference Design
SLVMCN4.ZIP (9 KB) - TINA-TI Spice Model
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 (...)
  • 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
  • (...)

Reference designs

Two-Sided Layout Reference Design to Increase Power Density With DC/DC Converters
TIDA-01510 — This reference design demonstrates the correct way to design a two-sided DC/DC layout in an effort to achieve higher power-supply density. The design guide highlights common mistakes and how to avoid them, along with test results showing that proper implemenation of the TPS54824 device in a (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN-HR (RNV) 18 View options

Ordering & quality

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