TPS57140-Q1

ACTIVE

Automotive 3.5V to 42V, 1.5A Buck Converter with Eco-Mode™

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Same functionality with different pin-out to the compared device
LMR43620-Q1 ACTIVE Automotive, 3-V to 36-V, 2-A low-EMI synchronous buck regulator with low IQ Smaller footprint, higher efficiency, lower EMI, lower IQ and spread-spectrum.

Product details

Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 3.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Adjustable, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 39 Iq (typ) (µA) 116 Duty cycle (max) (%) 100
Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 3.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Adjustable, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 39 Iq (typ) (µA) 116 Duty cycle (max) (%) 100
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
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • 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 Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • Supported by SwitcherPro Software Tool
    (www.ti.com/tool/switcherpro)

All trademarks are the property of their respective owners.

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • 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 Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • Supported by SwitcherPro Software Tool
    (www.ti.com/tool/switcherpro)

All trademarks are the property of their respective owners.

The TPS57140-Q1 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. When the enable pin is in the low state, the shutdown current is reduced to 1.5 µA.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow-start pin that can also be configured for sequencing or tracking. 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-Q1 is available in a 10-pin thermally enhanced MSOP-PowerPAD package (DGQ) and a 10-pin VSON package (DRC).

For all available packages, see the orderable addendum at the end of the data sheet.

The TPS57140-Q1 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. When the enable pin is in the low state, the shutdown current is reduced to 1.5 µA.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow-start pin that can also be configured for sequencing or tracking. 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-Q1 is available in a 10-pin thermally enhanced MSOP-PowerPAD package (DGQ) and a 10-pin VSON package (DRC).

For all available packages, see the orderable addendum at the end of the data sheet.

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Technical documentation

Design & development

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

Simulation model

TPS57140-Q1 PSpice Transient Model

SLVM820.ZIP (86 KB) - PSpice Model
Simulation model

TPS57140-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMCV1A.ZIP (62 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
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™
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Package Pins CAD symbols, footprints & 3D models
HVSSOP (DGQ) 10 Ultra Librarian
VSON (DRC) 10 Ultra Librarian

Ordering & quality

Information included:
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  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

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