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

 

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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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

Parametrics

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Part number Order 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 Type Package size: mm2:W x L (PKG)
TPS54618-Q1 Order now 2.95     6     0.8     4.5     6     1     200     2000     0.515     Enable
Frequency Synchronization
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Adjustable    
Current Mode     98     -40 to 125     Automotive     WQFN | 16     Converter     16WQFN: 9 mm2: 3 x 3 (WQFN | 16)    
TPS57114-Q1 Order now 2.95     6     0.8     4.5     4     1     200     2000     0.515     Enable
Frequency Synchronization
Power Good
Synchronous Rectification
Tracking
UVLO Adjustable    
Current Mode     100     -40 to 125     Automotive     WQFN | 16     Converter     16WQFN: 9 mm2: 3 x 3 (WQFN | 16)    
TPS62065-Q1 Order now 2.9     6     0.8     6     2     1     2600     3400     0.018     Enable
Light Load Efficiency
Output Discharge
Spread Spectrum
Synchronous Rectification    
Voltage Mode     100     -40 to 125     Automotive     WSON | 8     Converter     See datasheet (WSON)    
TPS62090-Q1 Order now 2.5     6     0.8     6     3     1     1400     2800     0.02     Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking    
Constant on-time (COT)
DCS-Control    
100     -40 to 125     Automotive     VQFN | 16     Converter     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    
TPS62260-Q1 Order now 2     6     0.6     6     0.6     1     2250     2250     0.015     Enable
Forced PWM
Light Load Efficiency
Synchronous Rectification    
Voltage Mode     100     -40 to 105