Automotive 2.75-V to 6-V, 6-A step-down converter in 2-mm x 3-mm wettable-flanks QFN package


Product details


Vin (Min) (V) 2.7 Vin (Max) (V) 6 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 6 Iq (Typ) (uA) 26 Switching frequency (Min) (kHz) 1800 Switching frequency (Max) (kHz) 4000 Features Enable, Forced PWM, Frequency Synchronization, Light Load Efficiency, Output Discharge, Over Current Protection, Power Good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, Tracking, UVLO Fixed, Wettable Flanks Package Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)


  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C TA
  • Functional Safety-Capable
  • Input voltage range: 2.7 V to 6 V
  • Quiescent current: 26 µA typical
  • Output voltage from 0.6 V to 5.5 V
  • Output voltage accuracy ±1% (PWM operation)
  • Adjustable soft start
  • Forced PWM or PWM/PFM operation
  • Adjustable switching frequency of 1.8 MHz to 4 MHz
  • Precise ENABLE input allows
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Spread spectrum clocking — optional
  • Power-good output with window comparator
  • Package with wettable flanks
  • TJ = –40°C to 150°C

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The TPS62816-Q1 is a pin-to-pin high efficiency, easy-to-use synchronous step-down DC/DC converter. It is based on a peak current mode control topology. It is designed for automotive applications such as infotainment and advanced driver assistance systems. Low resistive switches allow up to 6-A continuous output current. The switching frequency is externally adjustable from 1.8 MHz to 4 MHz and can also be synchronized to an external clock in the same frequency range. In PWM/PFM mode, the TPS62816-Q1 automatically enters Power Save mode at light loads to maintain high efficiency across the whole load range. The TPS62816-Q1 provides a 1% output voltage accuracy in PWM mode, which helps design a power supply with high output voltage accuracy. The SS/TR pin allows setting the start-up time or tracking of the output voltage to an external source. This allows external sequencing of different supply rails and limiting the inrush current during start-up.

The TPS62816-Q1 is available as an adjustable version, packaged in a 3-mm × 2-mm VQFN package with wettable flanks.

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Technical documentation

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Type Title Date
* Data sheet TPS62816-Q1 2.7-V to 6-V, 6-A Automotive Step-Down Converter in 3-mm × 2-mm QFN Package with Wettable Flanks datasheet Apr. 26, 2021
Functional safety information TPS62816-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Apr. 15, 2021
User guide TPS62816EVM-140 Evaluation Module Sep. 25, 2020
White paper Streamlining Functional Safety Certification in Automotive and Industrial Jun. 09, 2020
Application note Synchronizing DC/DC Converters in a Power Tree Jan. 16, 2020
White paper Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies Oct. 14, 2019
Application note Methods of output-voltage adjustment for DC/DC converters Jun. 14, 2019
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application note Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018

Design & development

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Hardware development

document-generic User guide
The TPS62816EVM-140 evaluation module (EVM) is designed to help easily evaluate and test the operation and functionality of the TPS62816-Q1 buck converters. The EVM converts a 2.7-V to 6.0-V input voltage to a regulated 1.8-V output voltage that delivers up to 6 A.
  • 2.7-V to 6.0-V input voltage range
  • 0.6-V to 5.5-V adjustable output voltage
  • Adjustable switching frequency of 1.8 MHz to 4 MHz
  • 15-μA operating quiescent current
  • Power save mode for light-load efficiency
  • 100% duty cycle for lowest dropout

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