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TPS54240-Q1

ACTIVE

Automotive 3.5V to 42V, 2.5A Buck Converter with Eco-Mode™

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Data sheet

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NEW LM65625-Q1 ACTIVE Automotive, 2.5A, 3V to 65V buck converter optimized for power density and low EMI Better efficiency and smaller solution size

TPS54240-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 42 Vin (min) (V) 3.5 Vout (max) (V) 39 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Adjustable, Tracking, UVLO adjustable Control mode current mode Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 138 Duty cycle (max) (%) 100 Type Converter
Rating Automotive Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 42 Vin (min) (V) 3.5 Vout (max) (V) 39 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Adjustable, Tracking, UVLO adjustable Control mode current mode Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 138 Duty cycle (max) (%) 100 Type Converter
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9 VSON (DRC) 10 9 mm² 3 x 3
  • Qualified for Automotive Applications
  • AEC Q100 Qualified With the Following Results:
    • Device Temperature Grade 1:
      –40°C to 125°C Ambient Operating
      Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C6
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads With a
    Pulse-Skipping Eco-mode Control Scheme
  • 138-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start/Sequencing
  • UV and OV Power-Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • MSOP10 PowerPAD Package
  • Supported by SwitcherPro Software Tool
    (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
  • For SWIFT Documentation, See the TI Web site at http://www.ti.com/swift
  • Qualified for Automotive Applications
  • AEC Q100 Qualified With the Following Results:
    • Device Temperature Grade 1:
      –40°C to 125°C Ambient Operating
      Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C6
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads With a
    Pulse-Skipping Eco-mode Control Scheme
  • 138-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start/Sequencing
  • UV and OV Power-Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • MSOP10 PowerPAD Package
  • Supported by SwitcherPro Software Tool
    (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
  • For SWIFT Documentation, See the TI Web site at http://www.ti.com/swift

The TPS54240-Q1 device is a 42-V, 2.5-A, step-down regulator with an integrated high-side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no-load, regulated-output supply current to 138 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA when the enable pin is low.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage start-up ramp is controlled by the slow-start pin that can also be configured for sequencing/tracking. An open-drain power-good signal indicates the output is within 94% to 107% of its nominal voltage.

A wide switching-frequency range allows efficiency and external component size to be optimized. Frequency foldback and thermal shutdown protects the part during an overload condition.

The TPS54240-Q1 is available in a 10-pin thermally enhanced MSOP PowerPAD package.

The TPS54240-Q1 device is a 42-V, 2.5-A, step-down regulator with an integrated high-side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no-load, regulated-output supply current to 138 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA when the enable pin is low.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage start-up ramp is controlled by the slow-start pin that can also be configured for sequencing/tracking. An open-drain power-good signal indicates the output is within 94% to 107% of its nominal voltage.

A wide switching-frequency range allows efficiency and external component size to be optimized. Frequency foldback and thermal shutdown protects the part during an overload condition.

The TPS54240-Q1 is available in a 10-pin thermally enhanced MSOP PowerPAD package.
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Technical documentation

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Type Title Date
* Data sheet 3.5 V to 42 V STEP DOWN SWIFT DC/DC CONVERTER WITH ECO-MODE datasheet (Rev. B) 05 Sep 2013
Application note Passing CISPR25 Radiated Emissions Using the TPS54160-Q1 (Rev. A) 23 May 2019
Application note Understanding Eco-mode(TM) Operation 05 Dec 2016
Application note Interfacing TPS57xxx-Q1 and TPS65320-Q1 Family Devices With Low Impendence Exter 08 Dec 2015
Application note TPS54xx0-Q1 and TPS57xx0-Q1 Pin Open and Short Test Results (Rev. B) 03 Nov 2015
Application note Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications 05 Mar 2015

Design & development

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

Evaluation board

TPS54240EVM-605 — 2.5A SWIFT™ Converter Evaluation Module

The TPS54240 dc/dc converter is designed to provide up to a 2.5-A output from an input voltage source of 3.5V to 40V. Rated input voltage and output current range for the evaluation module are given in Table 1 of the User Guide. This evaluation module is designed to demonstrate the small, (...)
User guide: PDF
Not available on TI.com
Simulation model

TPS54240 PSpice Transient Model (Rev. A)

SLIM265A.ZIP (53 KB) - PSpice Model
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Simulation model

TPS54240 TINA-TI Transient Reference Design

SLVM271.TSC (160 KB) - TINA-TI Reference Design
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Simulation model

TPS54240 TINA-TI Transient Spice Model

SLVM272.ZIP (51 KB) - TINA-TI Spice Model
Download
Calculation tool

TPS54-57XX0-CALC — TPS54xx0-Q1 and TPS57xx0-Q1 Design Calculation Tool

This worksheet is designed for use with Microsoft Excel 2002 or later. It intends to assist circuit designers in their day-to-day calculations

This worksheet includes two sections:

  • Recommendations: Calculates the maximum requirements for different components to guarantee the input voltage, output (...)
Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
  • TPS54240-Q1 — Automotive 3.5V to 42V, 2.5A Buck Converter with Eco-Mode™
  • TPS54260-Q1 — Automotive 3.5V to 60V, 2.5A Step-down Converter with Eco-Mode™
  • TPS57040-Q1 — Automotive 3.5V to 42V, 500mA Buck Converter with Eco-Mode™
  • TPS57060-Q1 — Automotive 3.5V to 60V, 500mA Buck Converter with Eco-Mode™
  • TPS57140-EP — TPS57140-EP 1.5-A 42-V STEP-DOWN DC-DC CONVERTER WITH Eco-mode™ CONTROL
  • TPS57140-Q1 — Automotive 3.5V to 42V, 1.5A Buck Converter with Eco-Mode™
  • TPS57160-Q1 — Automotive 3.5V to 60V, 1.5A Buck Converter with Eco-Mode™
Download
Reference designs

TIDA-00346 — Cost-optimized power supply solution for entry-level core application processor-based ADAS systems

The TIDA-00346 design provides the power supply rails necessary for typical  entry-level application processors in automotive advanced driver assistance systems (ADAS) applications.  The design uses several individual DC/DC voltage regulators as well as load switches and linear regulators (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
HVSSOP (DGQ) 10 Ultra Librarian
VSON (DRC) 10 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

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

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