TPS54388-Q1 is in the process of being discontinued.
Please consider one of these alternatives:
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Drop-in replacement with upgraded functionality 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 functionality 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
  • 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

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.

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) 24 May 2019
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Application note TPS57112-Q1 High Frequency (2.35 MHz) Operation 31 May 2016
Application note Enable Functionality and Adjusting Under Voltage Lockout for TPS57112-Q1 Device 05 May 2016
Application note Interfacing TPS57xxx-Q1 and TPS65320-Q1 Family Devices With Low Impendence Exter 08 Dec 2015
User guide TPS54388EVM User's Guide 14 Nov 2013

Design & development

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

Evaluation board

TPS54388EVM — TPS54388EVM: 2.95V-6V Input, 3A, 2MHz Synchronous Step Down SWIFTT DCDC Converter Evaluation Module

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 (...)

In stock
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Simulation model

TPS54388-Q1 Unencrypted PSpice Average Model Package (Rev. A)

SLVM780A.ZIP (37 KB) - PSpice Model
Simulation model

TPS54388-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM821A.ZIP (59 KB) - PSpice Model
Simulation model

TPS54388-Q1 TINA-TI Transient Spice Model

SLVM859.ZIP (57 KB) - TINA-TI Spice Model
Simulation model

TPS54388-Q1 TINA-TI Transient Reference Design

SLVM860.TSC (179 KB) - TINA-TI Reference Design
Simulation model

TPS54388-Q1 TINA-TI Average Reference Design

SLVM992.TSC (57 KB) - TINA-TI Reference Design
Simulation model

TPS54388 IBIS Model

SLVMAF3.ZIP (11 KB) - IBIS Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Reference designs

PMP4442 — Automotive I.MX6 Quad Core Processor Power Solution Reference Design

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 (...)
Reference designs

TIDA-00804 — Automotive i.MX6 Quad Core Processor Power Reference Design

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 (...)
Package Pins Download
WQFN (RTE) 16 View options

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