Automotive Catalog, 2.95V to 6V Input, 6A Synchronous Step-Down Converter - TPS54618-Q1

TPS54618-Q1 (ACTIVE)

Automotive Catalog, 2.95V to 6V Input, 6A Synchronous Step-Down Converter

 

Description

The TPS54618-Q1 device is a full-featured 6-V, 6-A, synchronous step-down current-mode converter with two integrated MOSFETs.

The TPS54618-Q1 enables small designs by integrating the MOSFETs, implementing current-mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small, 3-mm × 3-mm, thermally-enhanced WQFN package.

The TPS54618-Q1 provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.

Efficiency is maximized through the integrated 12-mΩ MOSFETs and 515-µA typical supply current. Using the enable pin, shutdown supply current is reduced to 5.5-µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output-voltage startup ramp is controlled by the slow-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage.

Frequency foldback and thermal shutdown protect the device during an overcurrent condition.

TPS54618-Q1 is supported in the SwitcherPro software tool at www.ti.com/switcherpro.

For more SWIFT documentation, see the TI website at www.ti.com/swift.

Features

  • Qualified for Automotive Applications
  • AEC Q-100 Qualified With the Following Results:
    • Device Temperature Grade 1: Ambient
      Operating Temperature Range of –40°C to
      125°C
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C4B
  • Two 12-mΩ (Typical) MOSFETs for High
    Efficiency at 6-A Loads
  • 300-kHz to 2-MHz Switching Frequency
  • 0.8-V ±1% Voltage Reference Over Temperature
    (–40°C to 150°C)
  • Synchronizes to External Clock
  • Adjustable Slow-Start and Sequencing
  • UV and OV Power-Good Output
  • Thermally-Enhanced 3-mm × 3-mm, 16-pin
    WQFN Package

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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
TPS54618-Q1 TPS54388-Q1 TPS57112-Q1 TPS57114-Q1
2.95    2.95    2.95    2.95   
6    6    6    6   
0.8    0.8    0.8    0.8   
4.5    4.5    4.5    4.5   
6    3    2    4   
1    1    1    1   
200    200    200    200   
2000    2000    2000    2000   
0.25    0.515    0.515    0.515   
Enable
Frequency Synchronization
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Power Good
Synchronous Rectification
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Power Good
Synchronous Rectification
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Power Good
Synchronous Rectification
Tracking
UVLO Adjustable   
Current Mode    Current Mode    Current Mode    Current Mode   
98    100    100    100   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
Automotive    Automotive    Automotive    Automotive   
WQFN    WQFN    WQFN    WQFN   

Other qualified versions of TPS54618-Q1

Version Part Number Definition
Catalog TPS54618 TI's standard catalog product
New! Interactive Design
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WEBENCH® Designer TPS54618-Q1

  Min   Max Range
Vin  V 2.95 to 6.0V
Vout  V 0.8 to 6.0V
Iout  A ≤ 6A
Ambient Temp  °C -40 to 150°C


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