TPS57140-Q1 (ACTIVE)

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

 

Description

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.

Features

  • 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)

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Parametrics Compare all products in Buck Converter (Integrated Switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
TPS57140-Q1 TPS54240-Q1 TPS54260-Q1 TPS57040-Q1 TPS57060-Q1 TPS57160-Q1
3.5    3.5    3.5    3.5    3.5    3.5   
42    42    60    42    60    60   
0.8    0.8    0.8    0.8    0.8    0.8   
39    39    58    39    58    58   
1.5    2.5    2.5    0.5    0.5    1.5   
1    1    1    1    1    1   
100    100    100    100    100    100   
2500    2500    2500    2500    2500    2500   
0.116    0.138    0.138    0.116    0.116    0.116   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode   
100    100    100    100    98    100   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
Automotive    Automotive    Automotive    Automotive    Automotive    Automotive   
MSOP-PowerPAD
VSON   
MSOP-PowerPAD
VSON   
MSOP-PowerPAD
VSON   
MSOP-PowerPAD
VSON   
MSOP-PowerPAD
VSON   
MSOP-PowerPAD
VSON   

Other qualified versions of TPS57140-Q1

Version Part Number Definition
Enhanced Product TPS57140-EP Supports Defense, Aerospace and Medical Applications
New! Interactive Design
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WEBENCH® Designer TPS57140-Q1

  Min   Max Range
Vin  V 3.5 to 42.0V
Vout  V 0.8 to 39.0V
Iout  A ≤ 1.5A
Ambient Temp  °C -40 to 125°C


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