TPS54294

ACTIVE

4.5 V to 18 V input, dual 2 A output, synchronous step-down converter, with 1 ms fixed soft start

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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) 2 Iq (Typ) (uA) 1300 Switching frequency (Min) (kHz) 700 Switching frequency (Max) (kHz) 700 Features Enable, Light Load Efficiency, Power Good, Synchronous Rectification, Soft Start Fixed, Power Good Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 2 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

HTSSOP (PWP) 16 32 mm² 5 x 6.4 VQFN (RSA) 16 16 mm² 4 x 4 open-in-new Find other Buck converters (integrated switch)

Features

  • D-CAP2 Control Mode
    • Fast Transient Response
    • No External Parts Required For Loop
      Compensation
    • Compatible with Ceramic Output
      Capacitors
  • Wide Input Voltage Range : 4.5 V to 18 V
  • Output Voltage Range : 0.76V to 7.0V
  • Highly Efficient Integrated FETs Optimized
    for Low Duty Cycle Applications
    • 150 mΩ (High Side) and 100 mΩ
      (Low Side)
  • High Initial Reference Accuracy
  • Low-Side rDS(on) Loss-Less Current
    Sensing
  • Fixed Soft Start : 1.0ms
  • Non-Sinking Pre-Biased Soft Start
  • Powergood
  • 700 kHz Switching Frequency
  • Cycle-by-Cycle Over-Current Limit Control
  • OCL/OVP/UVP/UVLO/TSD Protections
  • Adaptive Gate Drivers with Integrated Boost PMOS Switch
  • OCP Constant Due To Thermally Compensated rDS(on)
    with 4000ppm/℃
  • 16-Pin HTSSOP, 16-Pin VQFN
  • Auto-Skip Eco-mode — for High Efficiency at Light Load
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Description

The TPS54294 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54294 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS54294 use the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54294 to maintain high efficiency during lighter load conditions. The TPS54294 is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5V to 18V.

The TPS54294 is available in a 4.4mm × 5.0mm 16-pin TSSOP (PWP) package, and 4mm x 4mm 16-pin VQFN (RSA) package specified for an ambient temperature range from –40°C to 85°C.

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Same functionality and pinout but is not an equivalent to the compared device:
TPS542941 ACTIVE 4.5 V to 18 V input, 2 A / 3 A dual channel synchronous step-down converter, 1 ms fixed soft start This is a dual-channel 2-A / 3-A output product.
Similar but not functionally equivalent to the compared device:
TPS54228 ACTIVE 4.5V to 18V Input, 2-A Synchronous Step-Down Converter with Eco-mode™ This is a single 2-A output product.
TPS54295 ACTIVE 4.5 V to 18 V input, dual 2 A output, synchronous step-down converter, with adjustable soft start This is a dual-channel 2-A / 2-A output product with adjustable soft start.

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 2A Dual Channel Synchronous Step-Down Switcher With Integrated FETs datasheet (Rev. D) Sep. 03, 2013
Technical articles 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
Application note D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- Jan. 02, 2013
User guide TPS54294, Dual Channel SWIFT(TM) Evaluation Module Nov. 04, 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
49
Description
The TPS54294EVM-057 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS54294 Dual 2A Output, Synchronous Step-Down SWIFT Converter. The EVM operates from a 4.5V to 18V input and generates output voltages of 1.5V and 3.3V with a switch current limit of 2A minimum.
Features
  • D-CAP2 Mode Control
  • Synchronous Buck Converter
  • Fixed SW Frequency: 700kHz
  • Integrated High-Side and Low-Side FET
  • Wide Vin1 Input Range: 4.5V - 18V (CH1)
  • Wide Vin2 Input Range: 2.0V - 18V (CH2)
  • Fixed Soft Start
  • 2A / 2A Output Current

Design tools & simulation

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
  • (...)

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 16 View options
QFN (RSA) 16 View options

Ordering & quality

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  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

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