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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 18 Vout (Min) (V) 0.76 Vout (Max) (V) 7 Iout (Max) (A) 4 Iq (Typ) (uA) 950 Switching frequency (Min) (kHz) 650 Switching frequency (Max) (kHz) 650 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 VSON (DRC) 10 9 mm² 3 x 3 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 18 V
  • Output Voltage Range: 0.76 V to 7.0 V
  • Highly Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    – 70 mΩ (High Side) and 53 mΩ (Low Side)
  • High Efficiency, Less Than 10 µA at Shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 650-kHz Switching Frequency (fSW)
  • Cycle by Cycle Over Current Limit
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Description

The TPS54427 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54427 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution.

The main control loop for the TPS54427 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components.

The TPS54427 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 18-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 TPS54427 is available in the 8-pin DDA package and 10-pin DRC, and is 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 5
Type Title Date
* Datasheet TPS54427 4.5-V to 18-V Input, 4-A Output Single Synchronous Step-Down Switcher With Integrated FET datasheet (Rev. C) Feb. 10, 2016
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application note Optimize Output Filter on D-CAP2 for Stability Improvement Jun. 13, 2017
Application note D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- Jan. 02, 2013
User guide TPS54427, 4-A, SWIFT™ Regulator Evaluation Module Nov. 30, 2011

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 TPS54427EVM-052 is a fully assembled and tested circuit for evaluating the TPS54427 synchronous step-down converter. The EVM operates from a 4.5-V to 18-V input and provides a 1.05-V output up to 4 A. The main control loop of TPS54427 uses D-CAP2™ mode control, which provides a very fast (...)

Features
  • Fast load transient response
  • Low output ripple and allows ceramic output capacitor
  • Highly efficient integrated FETs optimized for low duty cycle applications
  • Adjustable soft start
  • Pre-biased soft start
  • 650-kHz switching frequency operation

Design tools & simulation

SIMULATION MODEL Download
SLVM452.ZIP (274 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
High efficiency power supply architecture reference design for protection relay processor module
TIDA-010011 — This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SO PowerPAD (DDA) 8 View options
VSON (DRC) 10 View options

Ordering & quality

Information included:
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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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