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
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
VQFN-HR (RJM) 33
  • 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
  • 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

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.

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. B) 20 Oct 2021
User guide TPS542A50 SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. A) 11 Oct 2021
Application note Point-of-Load Solutions for Network Interface Cards (NIC) 08 Sep 2021
Certificate TPS542A50EVM-059 EU Declaration of Conformity (DoC) 02 Sep 2020
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019

Design & development

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Evaluation board

TPS542A50EVM-059 — 4-V to 18-V, 15-A synchronous SWIFT™ step-down converter with I2C interface evaluation module

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.
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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 (...)
Simulation tool

TPS542A50 SIMPLIS Transient and Average Model

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