TPS57112-Q1 Automotive 2.95V to 6V, 2A, 2MHz Synchronous Buck Converter |

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


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The TPS57112-Q1 device is a full-featured 6-V, 2-A, synchronous step-down current-mode converter with two integrated MOSFETs.

The TPS57112-Q1 device 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 QFN package.

The TPS57112-Q1 device provides accurate regulation for a variety of loads with a ±1% voltage reference (Vref) over temperature.

The integrated 12-mΩ MOSFETs and 515-µA typical supply current maximize efficiency. Using the enable pin to enter the shutdown mode reduces supply current to 5.5 µA, typical.

The internal undervoltage lockout setting is 2.45 V, but programming the threshold with a resistor network on the enable pin can increase the setting. The slow-start pin controls the output-voltage start-up ramp. An open-drain power-good signal indicates when the output is within 93% to 107% of its nominal voltage.

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


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • Two 12-mΩ (Typical) MOSFETs for High Efficiency at 2-A Loads
  • 200-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
  • –40°C to +150°C Operating Junction Temperature Range
  • Thermally Enhanced 3-mm × 3-mm 16-Pin WQFN
  • Pin-Compatible to TPS54418
  • Create a custom design using the TPS57112-Q1 with the WEBENCH® Power Designer

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WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS57112-Q1

  Min   Max Range
Vin  V 2.95 to 6.0V
Vout  V 0.8 to 6V
Iout  A ≤ 2A
Ambient Temp  °C -40 to 150°C


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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)
TPS57112-Q1 Order now 2.95     6     0.8     4.5     2     1     200     2000     0.515     Enable
Frequency Synchronization
Power Good
Synchronous Rectification
UVLO Adjustable
Soft Start Adjustable    
Current Mode     100     -40 to 125     Automotive     WQFN | 16     Converter     16WQFN: 9 mm2: 3 x 3 (WQFN | 16)