TPS542941

ACTIVE

4.5 V to 18 V input, 2 A / 3 A dual channel synchronous step-down converter, 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) (mA) 1.3 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 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 7V
  • Highly Efficient Integrated FETs
    Optimized for Low Duty Cycle
    Applications
    • 150 mΩ (High Side) and
      100 mΩ (Low Side)
  • High Initial Reference Accuracy
  • 2A CH1 / 3A CH2 Continuous Load Current
  • 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/UVLO/TSD Protections
  • Hiccup Timer for Overload
    Protection
  • Adaptive Gate Drivers with Integrated
    Boost PMOS Switch
  • OCP Constant Due To Thermally Compensated
    rDS(on) with 4000ppm/°C
  • 16-Pin HTSSOP, 16-Pin VQFN
  • Auto-Skip Eco-mode™ for High
    Efficiency at Light Load
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Description

The TPS542941 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS542941 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 TPS542941 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 TPS542941 to maintain high efficiency during lighter load conditions. The TPS542941 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 TPS542941 is available in a 4.4mm × 5.0mm 16 pin TSSOP (PWP) package, and 4mm × 4mm 16-pin VQFN (RSA) package specified for an ambient temperature range from –40°C to 85°C.

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Similar products you might be interested in
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Same functionality and pinout but is not an equivalent to the compared device:
TPS54294 ACTIVE 4.5 V to 18 V input, dual 2 A output, synchronous step-down converter, with 1 ms fixed soft start This is a dual-channel 2-A / 2-A output product.
TPS54394 ACTIVE 3A Dual Channel Synchronous Step-Down Switcher with Integrated FET This is a dual channel 3-A / 3-A output product.
Similar but not functionally equivalent to the compared device:
TPS542951 ACTIVE 4.5 V to 18 V input, 2 A / 3 A dual channel synchronous step-down converter, adjustable soft start This is a dual-channel 2-A / 3-A output product with adjustable soft start.
TPS54328 ACTIVE 4.5V to 18V Input, 3-A Synchronous Step-Down Converter with Eco-mode™ This is a single 3-A output product.

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 2A/3A Dual Channel Synchronous Step-Down Switcher With Integrated FET, TPS542941 datasheet (Rev. B) Oct. 08, 2013
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
User guide TPS542941 Dual Channel SWIFT Evaluation Module Aug. 10, 2012

Design & development

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

Hardware development

EVALUATION BOARD Download
TPS542941 Evaluation Module
TPS542941EVM-057
49
Description
The Texas Instruments TPS542941EVM-057 evaluation module (EVM) helps designers evaluate the performance of the TPS542941 2A/3A Output, 18V, Dual Synchronous Step-Down Converter.
Features
  • 2 outputs
  • DCAP2 control
  • Power Good
  • Non sinking pre-bias start up
  • Eco-mode

Design tools & simulation

SIMULATION MODEL Download
SLVM635B.ZIP (400 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
  • (...)

CAD/CAE symbols

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

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