4-V to 18-V input, voltage mode, 15-A synchronous SWIFT™ step-down converter with I2C interface


Product details


Vin (Min) (V) 4 Vin (Max) (V) 18 Vout (Min) (V) 0.5 Vout (Max) (V) 5.5 Iout (Max) (A) 15 Iq (Typ) (uA) 1200 Switching frequency (Min) (kHz) 400 Switching frequency (Max) (kHz) 2200 Features Adaptive/Dynamic Voltage Scaling, Adjustable Current Limit, Differential Remote Sense, Enable, Forced PWM, Frequency Synchronization, I2C/PMBus, Power Good, Soft Start Adjustable, Synchronous Rectification Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

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  • Integrated 9.1-mΩ and 2.6-mΩ MOSFETs support up to 15-A output current
  • 0.5-V to 5.5-V output voltage range
  • Fixed-frequency voltage control mode with selectable internal compensation
  • Seven selectable frequency settings from 400 kHz to 2.2 MHz
  • Synchronizes to an external clock
  • Fully differential remote sense
  • Device configurable by analog pinstrap resistors or through I2C interface
  • VOUT adjustment with controlled slew rate through I2C from –20% to +10% in 0.25% steps
  • Six selectable overcurrent limits, four soft-start slew rates, and two I2C addresses
  • Monotonic start-up into pre-biased outputs
  • EN pin allowing for adjustable input UVLO
  • Power good indicator
  • 17-µA typical shutdown quiescent current draw
  • Selectable FCCM or PFM for light load efficiency
  • –40 to +150°C operating junction temperature
  • 4-mm × 4.5-mm VQFN package
  • Create a custom design using the TPS542A50 with the WEBENCH Power Designer

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The TPS542A50 is a high-efficiency synchronous buck converter with differential remote sense and I2C. This device features fixed-frequency, voltage-control mode with pinstrap selectable internal compensation for reduced system cost and complexity. The PWM can be synchronized to an external clock through the SYNC pin. Other key features include PFM for high light load efficiency, low shutdown quiescent current draw, adjustable UVLO through the EN pin and monotonic start up into pre-biased conditions. This device also features an I2C interface for device configuration and output voltage adjustment. The TPS542A50 is a lead-free device. It is fully RoHS compliant without exemption.

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Technical documentation

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Type Title Date
* Data sheet TPS542A50 4-V to 18-V Input, 15-A, Synchronous Buck Converter With Differential Remote Sense and I2C datasheet (Rev. A) Oct. 21, 2020
User guide Using the TPS542A50EVM-059 15-A Buck Converter Evaluation Module Sep. 29, 2020
Certificate TPS542A50EVM-059 EU Declaration of Conformity (DoC) Sep. 02, 2020
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019

Design & development

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Hardware development

document-generic User guide
The TPS542A50EVM-059 evaluation module (EVM) allows users to evaluate the TPS542A50. The TPS542A50 is a fixed frequency with non-compensation external synchronous buck converter with integrated MOSFETs. It provides a fixed 1-V output at up to 15 A from a 12-V input bus.
  • Differential remote sensing
  • I2C communication
  • No external compensation network design
  • Selectable switching frequency from 400 kHz to 2.2 MHz
  • Synchronization to an external clock

Design tools & simulation

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 (...)
  • 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
  • (...)
SNVMC18.ZIP (1440 KB)
SNVR490.ZIP (5421 KB)

CAD/CAE symbols

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Ordering & quality

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