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TPS5430

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5.5V to 36V Input, 3A, 500kHz Step-Down Converter

Data sheet
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5.5V to 36V Input, 3A, 500kHz Step-Down Converter

TPS5430

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Product details

Parameters

Vin (Min) (V) 5.5 Vin (Max) (V) 36 Vout (Min) (V) 1.23 Vout (Max) (V) 31 Iout (Max) (A) 3 Iq (Typ) (uA) 3000 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 500 Features Enable, Over Current Protection Operating temperature range (C) -40 to 125 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

  • Wide Input Voltage Range:
    • TPS5430: 5.5 V to 36 V
    • TPS5431: 5.5 V to 23 V
  • Up to 3-A Continuous (4-A Peak) Output Current
  • High Efficiency up to 95% Enabled by 110-mΩ Integrated MOSFET Switch
  • Wide Output Voltage Range: Adjustable Down to 1.22 V with 1.5% Initial Accuracy
  • Internal Compensation Minimizes External Parts Count
  • Fixed 500 kHz Switching Frequency for Small Filter Size
  • Improved Line Regulation and Transient Response by Input Voltage Feed Forward
  • System Protected by Overcurrent Limiting, Overvoltage Protection and Thermal Shutdown
  • –40°C to 125°C Operating Junction Temperature Range
  • Available in Small Thermally Enhanced 8-Pin SO PowerPAD™ Package
  • Create a Custom Design Using the TPS5430 With the WEBENCH® Power Designer

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Description

The TPS543x is a high-output-current PWM converter that integrates a low-resistance, high-side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, over-voltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS543x feedback loop is internally compensated. The TPS5431 is intended to operate from power rails up to 23 V. The TPS5430 regulates a wide variety of power sources including 24 V bus.

The TPS543x device is available in a thermally enhanced, easy to use 8-pin SOIC PowerPAD™ package. TI provides evaluation modules and the Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
LMR33630 ACTIVE SIMPLE SWITCHER® 3.8V to 36V, 3A Synchronous Buck Converter With Ultra-Low EMI Next-generation 3.8-V to 36-V, 3-A synchronous buck converter with ultra-Low EMI.

Technical documentation

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Type Title Date
* Datasheet TPS543x 3-A, Wide Input Range, Step-Down Converter datasheet (Rev. I) Mar. 22, 2017
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Technical article Laying out an inverting buck-boost converter for success Sep. 28, 2016
User guide TSW3070EVM: Amplifier Interface to Current Sink DAC - (Rev. A) May 23, 2016
Application note Simplifying Stability Checks (Rev. B) Nov. 05, 2013
More literature Исходные проекты ll May 13, 2011
User guide Voltage-Controlled Amplifier Evaluation Kit Aug. 25, 2008
User guide TPS5430EVM-342 2.25-A, Inverting Buck-Boost Regulator Evaluation Module Jun. 13, 2008
More literature TPS5430DDA Test Report Feb. 19, 2008
Application note Using a buck converter in an inverting buck-boost topology Oct. 12, 2007
Application note Using the TPS5430 As An Inverting Buck Boost Converter (Rev. A) Aug. 15, 2007
Application note Using TPS5410/20/30/31/50 w/Aluminum/Ceramic Output Capacitors (Rev. C) Mar. 21, 2007
User guide TPS5430/31EVM-173 3-A Regulator EVM Mar. 06, 2006

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
10
Description

The TPS5430EVM-173 evaluation module allows the designer to evaluate the TPS5430 SWIFT DC/DC converter and is designed with external components to operate over a wide input voltage range. The input voltage range of this module is 9.0 V to 36 V and the output voltage is pre-set to 5 V (...)

Features
  • Internally compensated for lower parts count
  • 500 kHz switching frequency allows smaller filter components
  • Greater than 90% efficiency
  • 2% regulation accuracy
  • Supported by SWIFT Designer software tool for quick and easy design
View details
EVALUATION BOARD Download
document-generic User guide
10
Description
The TPS5430EVM-342 evaluation module features the TPS5430 converter IC in a 2.25 A, inverting buck-boost design. The TPS5430 dc/dc converter is designed to provide up to a 3.0 A output from an input voltage source of 5.5 V to 36 V. Table 1 of the User Guide provides the rated input voltage and (...)
View details
EVALUATION BOARD Download
document-generic User guide
10
Description

The TPS5431EVM-173 evaluation module allows the designer to evaluate the TPS5431 SWIFT DC/DC converter and is designed with very few external components. The input voltage range of this module is 9.0 V to 21 V and the output voltage is pre-set to 5 V. The output voltage can be easily (...)

Features
  • Internally compensated for lower parts count
  • 500 kHz switching frequency allows smaller filter components
  • Low Rds(on) for greater than 90% efficiency
  • 2% regulation accuracy
  • Supported by SWIFT Designer software tool for quick and easy design
View details

Design tools & simulation

SIMULATION MODEL Download
SLVM006A.TSC (696 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLVM008A.TSC (8869 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLVM095.TSM (12 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLVM096.TSC (2089 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLVMAC8.ZIP (359 KB) - PSpice Model
SIMULATION MODEL Download
SLVMCU8.ZIP (5 KB) - PSpice 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
  • (...)
View details
SCHEMATIC Download
SLUR020.PDF (32 KB)
BILL OF MATERIALS (BOM) Download
SLUR019.PDF (25 KB)

Reference designs

REFERENCE DESIGNS Download
Software Defined Radio (SDR) OMAPL-138-based Hardware/Software Reference Design
TIDEP0040 — Software Defined Radio (SDR) is a popular application within the wireless infrastructure market.  This hardware reference design, leveraging the real time signal processing of the TI DSP and its Universal Parallel Port (uPP), along with TI ADC and DAC, offers SDR algorithm developers a quick (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Vision Analytics OMAPL-138-based Hardware/Software Reference Design
TIDEP0038 — Vision analytics is a critical function for many industrial automated applications including machine vision, inspection automation, surveillance and image processing.  This hardware/software design kit is optimized for vision analytic based applications and provides the all of hardware design (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Wide-Bandwidth and High-Voltage Arbitrary Waveform Generator Front End
TIDA-00075 — This design shows how to use an active interface with the current sink output of the DAC5682Z - typical applications for this include front ends for arbitrary waveform generators. The EVM includes the DAC5682Z for digital-to-analog conversion, an OPA695 to demonstrate an active interface (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Buck-boost (-12V @ 0.5A) for the TPS5430
PMP2224 — PMP2224 uses the TPS5430 in an inverting buck boost configuration to generate a negative output from a positive input.  This type of circuit is useful in a number of applications including Audio, Communications, Military/Space etc.  This design uses a nominal 12V input to generate an (...)
REFERENCE DESIGNS Download
Buck for USB Hub (5V @ 3A)
PMP1692 — The PMP1692 reference design is a non-synchronous buck that uses the TPS5430 to generate 5V@3A. The input voltage range is 6V to 18V. This type of design would typically be used with a DC wall adapter to generate a 5V rail for USB. The design also incorporates an extra diode for reverse polarity (...)

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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