1.5-V to 22-V, 8-A synchronous buck converter with eco-mode


Product details


Vin (Min) (V) 1.5 Vin (Max) (V) 22 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 8 Iq (Typ) (uA) 320 Switching frequency (Min) (kHz) 250 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Light Load Efficiency, Power Good, Pre-Bias Start-Up, Synchronous Rectification Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

LSON-CLIP (DQP) 22 30 mm² 6 x 5 open-in-new Find other Buck converters (integrated switch)


  • Conversion input voltage range: 1.5 V to 22 V
  • VDD input voltage range: 4.5 V to 25 V
  • 91% efficiency from 12 V to 1.5 V at 14 A
  • Output voltage range: 0.6 V to 5.5 V
  • 5-V LDO output
  • Supports single-rail input
  • Integrated power MOSFETs with 8 A (TPS53318) or 14 A (TPS53319) of continuous output current
  • Auto-skip Eco-mode™ for light-load efficiency
  • < 110 µA shut down current
  • D-CAP™ mode with fast transient response
  • Selectable switching frequency from 250 kHz to 1 MHz with external resistor
  • Selectable auto-skip or PWM-only operation
  • Built-in 1% 0.6-V reference
  • 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms selectable internal voltage servo soft-start
  • Integrated boost switch
  • Pre-charged start-up capability
  • Adjustable overcurrent limit with thermal compensation
  • Overvoltage, undervoltage, UVLO and over-temperature protection
  • Supports all ceramic output capacitors
  • Open-drain power good indication
  • Incorporates NexFET™ power block technology
  • 22-pin QFN (DQP) package with PowerPAD™
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The TPS53318 and TPS53319 devices are D-CAP mode, 8-A or 14-A synchronous switchers with integrated MOSFETs. They are designed for ease of use, low external component count, and space-conscious power systems.

These devices feature accurate 1%, 0.6-V reference, and integrated boost switch. A sample of competitive features include: 1.5-V to 22-V wide conversion input voltage range, very low external component count, D-CAP™ mode control for super fast transient, auto-skip mode operation, internal soft-start control, selectable frequency, and no need for compensation.

The conversion input voltage ranges from 1.5 V to 22 V, the supply voltage range is from 4.5 V to 25 V, and the output voltage range is from 0.6 V to 5.5 V.

These devices are available in 5 mm x 6 mm, 22-pin QFN package and is specified from –40°C to 85°C.

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TPS53319 ACTIVE 1.5-V to 22-V, 14-A synchronous buck converter with eco-mode This product is a pin-to-pin version with 14-A output current and available evaluation module.

Technical documentation

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Type Title Date
* Data sheet High-Efficiency 8-A or 14-A Synchronous Buck Converter with Eco-mode datasheet (Rev. F) Oct. 12, 2020
Application note Measuring the Bode Plot for D-CAPx DC/DC Converters May 25, 2021
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 Minimizing Switch Ringing on TPS53319 and TPS53318 Family of Devices (Rev. A) Nov. 13, 2018
Application note Solve Point-of-Load Power Design Challenges: Single Board Computer Applications Aug. 24, 2018
Application note Calculating Output Capacitance to Meet Transient and Ripple Requirements May 02, 2017
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev Jan. 25, 2017
Application note 2Q 2016 Analog Applications Journal Issue Apr. 26, 2016
Application note How to select input capacitors for a buck converter Apr. 26, 2016
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC Feb. 22, 2016
Technical article Power Tips: How to measure Bode plots with DCAP regulators May 05, 2015
Application note TPS53319 DCAP Mode with Ripple Injection Modeling Design Consideration Oct. 23, 2014
User guide TPS53319EVM-136 User's Guide May 02, 2012
Application note D-CAP(TM) Mode With All-Ceramic Output Capacitor Application Feb. 03, 2011

Design & development

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

Hardware development

TPS53319 Evaluation Module
document-generic User guide
The Texas Instruments TPS53319EVM-136 evaluation module (EVM) helps designers evaluate the performance of the TPS53319 synchronous switcher with integrated MOSFETs.
  • Input voltage: 8V-20V
  • Vout1: 1.5V/0A-14A
  • D-CAP mode with fast transient response
  • Integrated MOSFET
  • Autoskip/FCCM option

Design tools & simulation

SLUM314A.ZIP (75 KB) - PSpice Model
SLUM381.ZIP (57 KB) - TINA-TI Spice Model
SLUM382.TSC (186 KB) - TINA-TI Reference Design
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

USB Type-C HDD With USB Power Delivery Reference Design
TIDA-00882 This reference design uses Texas Instrument's SuperSpeed USB 3.0 to SATA bridge, USB Type-CTM and USB PD controller with integrated power switch and High-Speed USB mux, and SuperSpeed USB 3.1 mux to demonstrate the subsystems required to implement a Type-C external hard disk drive capable of (...)
document-generic Schematic document-generic User guide
USB Type-C™ and Power Delivery Minidock With Video and Charging Support Reference Design
TIDA-01243 — The USB Type-C® and power delivery (PD) minidock reference design provides a reference for a USB Type-C dock including audio, USB data, power and video.  This reference design has a small 2-inch by 4-inch form factor and supports both source and sink power capabilities over the primary (...)
document-generic Schematic
Non-Isolated Synchronous Buck (1.8V@8A)
PMP7828 The PMP7828 uitlizes the TPS53355, TPS53318, and TPS53319 buck converters using TI NexFET PowerStack technology to power Xilinx Virtex7 FPGA core and I/O, DDR memory core, and 3.3V System Rail with  high efficiency and excellent thermal performance in a small area.
document-generic Schematic
TI USB Type-C Dock Reference Design
TIDA-00630 The Type-C Dock Board is designed to help evaluate Type-C Dock implementations with video and charging support.  The Type-C Dock offers data and video port expansion and a charging capability for Type-C systems that support USB PD/Alternate mode protocol.  The dock comes with three (...)
document-generic Schematic
7 to 12Vin 1.2Vout 8A Step-down Conv for Powering Rails in Altera Arria V FPGA Reference Design
PMP8824 The PMP8824 uses the TPS53318 DCAP Mode 8A step-down converter to power the VCCR_GXB, VCCL_GXB, VCCT_GXB rails in Altera Arria® V FPGAs enabling tight load regulation, low total component count, high efficiency, high power density, and excellent thermal performance. The complete design fits in (...)
document-generic Schematic

CAD/CAE symbols

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