TPS54388-Q1 is in the process of being discontinued.
Please consider one of these alternatives:
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Exact equivalent in functionality and parametrics to the compared device:
TPS54388C-Q1 ACTIVE Automotive 2.95-V to 6-V, 3-A, 2-MHz synchronous buck converter The TPS54388C-Q1 offers improved automotive robustness.
Similar but not functionally equivalent to the compared device:
TPS62813-Q1 ACTIVE Automotive 2.75-V to 6-V, 3-A step-down converter with fixed Fsw and SYNC in 2x3mm wettable-flanks TPS62813-Q1 offers a better feature set and a smaller solution size.

Product details


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  • AEC-Q100-Qualified for Automotive Applications:
    • Temperature Grade 1: –40°C to +125°C, TA
  • Two 12-mΩ (typical) MOSFETs for High Efficiency at 3-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 TPS54388-Q1 with the WEBENCH® Power Designer

All trademarks are the property of their respective owners.

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The TPS54388-Q1 device is a full-featured 6-V, 3-A, synchronous step-down current-mode converter with two integrated MOSFETs.

The TPS54388-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 TPS54388-Q1 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (Vref) over temperature.

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

The internal undervoltage lockout setting is at 2.45 V, but programming the threshold with a resistor network on the enable pin can increase the setting. The slow-start pin sets 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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Technical documentation

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Type Title Date
* Data sheet TPS54388-Q1 Automotive 2.95-V to 6-V, 3-A , 2-MHz Synchronous Buck Converter datasheet (Rev. E) May 24, 2019
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application note TPS57112-Q1 High Frequency (2.35 MHz) Operation May 31, 2016
Application note Enable Functionality and Adjusting Under Voltage Lockout for TPS57112-Q1 Device May 05, 2016
Application note Interfacing TPS57xxx-Q1 and TPS65320-Q1 Family Devices With Low Impendence Exter Dec. 08, 2015
User guide TPS54388EVM User's Guide Nov. 14, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The TPS54388-Q1 DC/DC converter is designed to provide up to a 3-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 TPS54388-Q1 regulator. The switching (...)

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

Design tools & simulation

SLVM780A.ZIP (37 KB) - PSpice Model
SLVM821A.ZIP (59 KB) - PSpice Model
SLVM859.ZIP (57 KB) - TINA-TI Spice Model
SLVM860.TSC (179 KB) - TINA-TI Reference Design
SLVM992.TSC (57 KB) - TINA-TI Reference Design
SLVMAF3.ZIP (11 KB) - IBIS 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
  • (...)

Reference designs

Automotive I.MX6 Quad Core Processor Power Solution Reference Design
PMP4442 The PMP4442 reference design is an low-cost discrete power solution to power I.MX6 quad core. All the DCDC regulators are running at 2MHz to avoid the AM band interference and provide low solution size. The first stage DCDC converter can support wide Vin range from 6V to 42V, which can support (...)
document-generic Schematic document-generic User guide
Automotive i.MX6 Quad Core Processor Power Reference Design
TIDA-00804 The TIDA-00804 reference design is a low-cost discrete power solution for the i.MX6Q quad core application processor. All the DCDC regulators operate at frequencies above the AM radio broadcast band to avoid interference with the radio and to provide a small solution size due to smaller filter (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WQFN (RTE) 16 View options

Ordering & quality

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  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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