TPS54618-Q1 Automotive 2.95V to 6V, 6A, 2MHz Synchronous Buck Converter | TI.com

TPS54618-Q1 (ACTIVE)

Automotive 2.95V to 6V, 6A, 2MHz Synchronous Buck Converter

Automotive 2.95V to 6V, 6A, 2MHz Synchronous Buck Converter - TPS54618-Q1
 

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 TPS57114-Q1 TPS62065-Q1 TPS62090-Q1 TPS62260-Q1 TPS62290-Q1 TPS62590-Q1
2.95     2.95     2.9     2.5     2     2.3     2.5    
6     6     6     6     6     6     6    
0.8     0.8     0.8     0.8     0.6     0.6     0.75    
4.5     4.5     6     6     6     6     6    
6     4     2     3     0.6     1     1    
1     1     1     1     1     1     1    
200     200     2600     1400     2250     2250     2000    
2000     2000     3400     2800     2250     2250     2500    
0.25     0.515     0.018     0.02     0.015     0.015     0.015    
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
Light Load Efficiency
Output Discharge
Spread Spectrum
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Light Load Efficiency
Synchronous Rectification    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Light Load Efficiency
Synchronous Rectification    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Light Load Efficiency
Synchronous Rectification    
Current Mode     Current Mode     Voltage Mode     Constant on-time (COT)
DCS-Control    
Voltage Mode     Voltage Mode     Voltage Mode    
98     100     100     100     100     100     100    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 105
-40 to 85    
-40 to 105
-40 to 85    
-40 to 105    
Automotive     Automotive     Automotive     Automotive     Automotive     Automotive     Automotive    
WQFN | 16     WQFN | 16     WSON | 8     VQFN | 16     SOT-23-THIN | 5
WSON | 6    
WSON | 6     WSON | 6    
New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS54618-Q1

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


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