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TPS568230

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4.5-V to 18-V input, 8-A synchronous step-down voltage regulator

Data sheet
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TPS568230

ACTIVE
Data sheet Order now

Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 18 Vout (Min) (V) 0.6 Vout (Max) (V) 7 Iout (Max) (A) 8 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 1000 Features Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power Good, Soft Start Adjustable Control mode D-CAP3 Duty cycle (Max) (%) 85 Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN-HR (RJE) 20 9 mm² 3 x 3 open-in-new Find other Buck converters (integrated switch)

Features

  • Input voltage range: 4.5 V to 18 V
  • D-CAP3™ architecture control for fast transient response
  • Output voltage range: 0.6 V to 7 V
  • 0.6-V±1% reference voltage (25°C)
  • Supports 8-A continuous output current
  • Integrated 19.5-mΩ and 9.5-mΩ RDS(on) internal power MOSFET
  • ULQ™(Ultra Low Quiescent current) feature to enable long battery life
  • Selectable operation modes:
    • Forced continuous conduction mode (FCCM)
    • Out-of-Audio™(OOA) Mode
    • Advanced Eco-Mode™
  • Selectable 600-kHz, 800-kHz and 1-MHz switching frequency
  • Supports up to 90% duty operation
  • Adjustable soft start time by SS pin
  • Power good output
  • Built-in output discharge function
  • Cycle-by-cycle over current protection
  • Non-latched for fault protection
  • Small 3.0-mm × 3.0-mm HotRod™ QFN package

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Description

The TPS568230 is a cost effective, high-voltage input, high efficiency synchronous buck converter with integrated MOSFETs.

The TPS568230 has the ULQ™ (Ultra Low Quiescent current) feature to enable low-bias current. It operates with supply input voltage from 4.5 V to 18 V. It uses DCAP3™ control mode to provide fast transient response, good line, load regulation, no requirement for external compensation, and support low equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors.

The TPS568230 provides complete Over-voltage, Under-voltage, Over-current, Over-temperature and Under-voltage lock-out protections. It is combined power good signal , output discharge function and large duty operation feature.

TPS568230 is equipped with a MODE pin to select the desirable mode of operation. To attain high efficiency at light load, OOA mode and Advanced Eco-mode™ could be selected. OOA mode will not allow the part to go below audible frequency ( below 25kHz switching frequency ). FCCM is also available to support tight output voltage ripple requirement.

The TPS568230 supports both internal and external soft-start time option. The internal fixed soft-start time is 1.3 ms. Longer soft-start time can be get by connecting the external capacitor on SS pin.

The TPS568230 is available in a 20-pin 3.0-mm x 3.0-mm HotRod™ package and the junction temperature is specified from -40oC to 125oC.

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Technical documentation

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Type Title Date
* Datasheet TPS568230 4.5-V to 18-V Input, 8-A Synchronous Step-Down Voltage Regulator datasheet (Rev. C) Aug. 08, 2019
Selection guides Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
Application notes Large Duty Cycle Operation With the TPS568230 Mar. 31, 2020
Application notes How the Switching Frequency Affects the Performance of a Buck Convertor Jun. 24, 2019
Technical articles How to choose a DC/DC converter for a storage application May 08, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Understanding OOA Operation Mode Feb. 15, 2019
User guides Using the TPS568230EVM-BSR070 Dec. 05, 2018

Design & development

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

Hardware development

EVALUATION BOARDS Download
$109.00
Description
The TI Robotics System Lab kit MAX (TI-RSLK MAX) accelerates the learning and building of robotics systems, leading students to explore real-world applications. The TI-RSLK MAX is the fast track to getting students up and running with their own solderless robotic kit, providing hardware and (...)
Features
  • Powered by SimpleLink™ MSP432P401R MCU LaunchPad™ development kit
  • Versatile TI-RSLK chassis board with integrated 5V DC-DC regulator, 3.3V linear regulator, built-in dual motor drivers and sensor interface connectors
  • Easy to assemble black robot chassis with red wheels, two gear motors and encoder (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The TPS568230 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS568230 step-down converters. The TPS568230EVM operates from 4.5-V to 18-V input (12-V nominal) and provides a 1.05-V, 8-A output. Several jumpers and switches allow user to evaluate different control (...)
Features
  • ULQ (ultra low quiescent)
  • Integrated 20-mΩ/10-mΩ RDSON FET Converter
  • FCCM/eco-mode/OOA mode selectable for light load
  • Can support 8-A output current
View details

Design tools & simulation

SIMULATION MODELS Download
SLVMCZ2.ZIP (100 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
VQFN-HR (RJE) 20 View options

Ordering & quality

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Training series

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Videos

Power Tips: Layout for a Buck Power Stage

This video shows a simplified schematic and PCB layout for a buck converter

Posted: 21-Jan-2016
Duration: 04:44

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