Automotive 2.95-V to 6-V, 2-A, 2-MHz synchronous buck converter

Automotive 2.95-V to 6-V, 2-A, 2-MHz synchronous buck converter



Product details


Vin (Min) (V) 2.95 Vin (Max) (V) 6 Vout (Min) (V) 0.8 Vout (Max) (V) 4.5 Iout (Max) (A) 2 Iq (Typ) (mA) 0.515 Iq (Typ) (uA) 515 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2000 Features Enable, Forced PWM, Frequency Synchronization, Power Good Operating temperature range (C) -40 to 125 Rating Automotive Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

WQFN (RTE) 16 9 mm² 3 x 3 open-in-new Find other Buck converters (integrated switch)


  • 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

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The TPS57112C-Q1 device is a full-featured 6-V, 2-A, synchronous step-down current-mode converter with two integrated MOSFETs.

The TPS57112C-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 TPS57112C-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.

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Exact equivalent in functionality and parametrics to the compared device:
TPS62812-Q1 ACTIVE Automotive 2.75-V to 6-V, 2-A step-down converter in a 2mm x 3mm wettable-flanks QFN package Improved performance: Fixed-frequency, spread-spectrum in smaller 2-mm x 3-mm QFN with wettable flanks.

Technical documentation

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Type Title Date
* Datasheet TPS57112C-Q1 Automotive 2.95-V to 6-V, 2-A, 2-MHz Synchronous Buck Converter datasheet (Rev. A) Jan. 14, 2019
Selection guides Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
Application notes TPS54388C-Q1 Functional Safety FIT Rate and Failure Mode Distribution Feb. 17, 2020
Application notes TPS57112C-Q1 Functional Safety FIT Rate and Failure Mode Distribution Feb. 17, 2020
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Technical articles How to power next-generation ADAS camera modules Sep. 11, 2018
Technical articles Use a low-quiescent-current switcher for high-voltage conversion Aug. 27, 2018
Technical articles Let’s break it down: how buck converters make your power supply more flexible Dec. 13, 2017
Application notes TPS57112-Q1 High Frequency (2.35 MHz) Operation May 31, 2016
Application notes Enable Functionality and Adjusting Under Voltage Lockout for TPS57112-Q1 Device May 05, 2016
Application notes Interfacing TPS57xxx-Q1 and TPS65320-Q1 Family Devices With Low Impendence Exter Dec. 08, 2015
User guides TPS57112EVM User's Guide Nov. 14, 2013

Design & development

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Hardware development

document-generic User guide

The TPS57112-Q1 DC/DC converter is designed to provide up to a 2-A output from an input voltage source of 2.95 V to 6 V. This evaluation module is designed to demonstrate the small printed-circuit-board (PCB) areas that may be achieved when designing with the TPS57112-Q1 regulator. The switching (...)

  • Adjustable output voltage (down to 0.8V)
  • Adjustable slow start time
  • Adjustable undervoltage lockout
  • 2 MHz switching frequency (adjustable down to 200 kHz)
  • Optimized for fast load transient response

Design tools & simulation

SLVM818A.ZIP (62 KB) - PSpice Model
SLVMAF2.ZIP (11 KB) - IBIS Model
SLVMC58A.ZIP (91 KB) - PSpice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

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Ordering & quality

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