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TPS57140-EP

ACTIVE

TPS57140-EP 1.5-A 42-V STEP-DOWN DC-DC CONVERTER WITH Eco-mode™ CONTROL

Product details

Vin (min) (V) 3.5 Vin (max) (V) 42 Vout (min) (V) 0.8 Vout (max) (V) 39 Iout (max) (A) 1.5 Iq (typ) (mA) 0.116 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Operating temperature range (°C) -55 to 125 Rating HiRel Enhanced Product Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 100 Type Converter
Vin (min) (V) 3.5 Vin (max) (V) 42 Vout (min) (V) 0.8 Vout (max) (V) 39 Iout (max) (A) 1.5 Iq (typ) (mA) 0.116 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Operating temperature range (°C) -55 to 125 Rating HiRel Enhanced Product Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 100 Type Converter
VSON (DRC) 10 9 mm² 3 x 3
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads With Pulse-Skipping Eco-mode™ Control Scheme
  • 116-µA Operating Quiescent Current
  • 1.5-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start and Sequencing
  • Undervoltage and Overvoltage Power-Good Output
  • Adjustable Undervoltage Lockout (UVLO) Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • Supports Defense, Aerospace, and Medical Applications
    • Controlled Baseline
    • One Assembly and Test Site
    • One Fabrication Site
    • Available in Military (–55°C to 125°C) Temperature Range
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads With Pulse-Skipping Eco-mode™ Control Scheme
  • 116-µA Operating Quiescent Current
  • 1.5-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start and Sequencing
  • Undervoltage and Overvoltage Power-Good Output
  • Adjustable Undervoltage Lockout (UVLO) Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • Supports Defense, Aerospace, and Medical Applications
    • Controlled Baseline
    • One Assembly and Test Site
    • One Fabrication Site
    • Available in Military (–55°C to 125°C) Temperature Range
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability

The TPS57140-EP device is a 42-V, 1.5-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 116 µA. Using the enable pin reduces the shutdown supply current to 1.5 µA.

UVLO is internally set at 2.5 V, but can be increased using the enable pin. The slow-start pin, which is also configurable for sequencing or tracking, controls the output voltage start-up ramp. An open-drain power-good signal indicates the output is within 92% to 109% of its nominal voltage.

A wide switching-frequency range allows optimization of efficiency and external component size. Frequency foldback and thermal shutdown protect the part during an overload condition.

The TPS57140-EP is available in a 10-pin VSON package (DRC).

The TPS57140-EP device is a 42-V, 1.5-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 116 µA. Using the enable pin reduces the shutdown supply current to 1.5 µA.

UVLO is internally set at 2.5 V, but can be increased using the enable pin. The slow-start pin, which is also configurable for sequencing or tracking, controls the output voltage start-up ramp. An open-drain power-good signal indicates the output is within 92% to 109% of its nominal voltage.

A wide switching-frequency range allows optimization of efficiency and external component size. Frequency foldback and thermal shutdown protect the part during an overload condition.

The TPS57140-EP is available in a 10-pin VSON package (DRC).

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Technical documentation

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Type Title Date
* Data sheet TPS57140-EP 1.5-A 42-V Step-Down DC/DC Converter With Eco-mode™ Control datasheet (Rev. B) PDF | HTML 03 May 2019
* Radiation & reliability report TPS57140MDRCREP Reliability Report 09 Feb 2016

Design & development

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Simulation model

TPS57140-Q1 PSpice Transient Model

SLVM820.ZIP (86 KB) - PSpice Model
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
Buck converters (integrated switch)
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™
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Package Pins Download
VSON (DRC) 10 View options

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