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TPS54388C-Q1

ACTIVE

Automotive 2.95-V to 6-V, 3-A, 2-MHz synchronous buck converter

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Automotive 2.95-V to 6-V, 3-A, 2-MHz synchronous buck converter

TPS54388C-Q1

ACTIVE

Product details

Parameters

Vin (Min) (V) 2.95 Vin (Max) (V) 6 Vout (Min) (V) 0.8 Vout (Max) (V) 4.5 Iout (Max) (A) 3 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)

Features

  • 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

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Description

The TPS54388C-Q1 device is a full-featured 6-V, 3-A, synchronous step-down current-mode converter with two integrated MOSFETs.

The TPS54388C-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 TPS54388C-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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Exact equivalent in functionality and parametrics 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 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 TPS54388C-Q1 Automotive 2.95-V to 6-V, 3-A , 2-MHz Synchronous Buck Converter datasheet (Rev. A) Nov. 29, 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
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 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

EVALUATION BOARDS Download
document-generic User guide
49
Description

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 (...)

Features
  • 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

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

Package Pins Download
WQFN (RTE) 16 View options

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