TPS54239

ACTIVE

4.5V to 23V Input, 2A Synchronous Step-Down Converter with D-CAP2 Mode

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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 23 Vout (Min) (V) 0.76 Vout (Max) (V) 7 Iout (Max) (A) 2 Iq (Typ) (uA) 600 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 600 Features Enable, Synchronous Rectification, Soft Start Adjustable Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

HSOIC (DDA) 8 19 mm² 4.9 x 3.9 open-in-new Find other Buck converters (integrated switch)

Features

  • D-CAP2 Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 23 V
  • Output Voltage Range: 0.76 V to 7.0 V
  • Highly Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    – 140 mΩ (High Side) and 70 mύ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 600-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
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Description

The TPS54239 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54239 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54239 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The TPS54239 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 23-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54239 is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C.

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Similar but not functionally equivalent to the compared device:
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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet 4.5 V to 23 V Input, 2-A Synchronous Step-Down SWIFTTM Converter datasheet Jan. 07, 2013
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
User guide TPS54239EVM-056, 2-A, Regulator Evaluation Module Jan. 09, 2013

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 Texas Instruments TPS54239EVM-056 evaluation module helps designers evaluate the performance of the TPS54239 4.5V to 23V input, 2-A synchronous step-down DC/DC converter.
Features
  • 23V maximum input voltage
  • Synchronous converter with integrated FETs
  • DCAP2 control
  • Fast Transient Response

Design tools & simulation

SIMULATION MODEL Download
SLVM844A.ZIP (280 KB) - PSpice Model
SIMULATION MODEL Download
SLVM848.TSC (188 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLVM849.ZIP (49 KB) - TINA-TI Spice 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
Ten Output QR Flyback and Buck Converter Reference Design
PMP10822 The PMP10822 reference design utilizes two QR flyback, and four buck converters. The efficiency for the 12V and 24V flyback approaches 87%, while the 16V buck converter has efficiency greater than 89%.
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SO PowerPAD (DDA) 8 View options

Ordering & quality

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  • Ongoing reliability monitoring

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