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TPSM82866C

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5.5V input, 6A step-down power module with integrated inductor and I2C interface in QFN

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Data sheet

TPSM82866C

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck, Step-Down Converter, Synchronous Buck Iout (max) (A) 6 Vin (max) (V) 5.5 Vin (min) (V) 2.4 Vout (max) (V) 1.675, 3.35 Vout (min) (V) 0.4, 0.8 Features Digital/I2C compatible, Dynamic voltage scaling, EMI Tested, EMI filtering, Enable, Fast load transient support, Fixed PWM Mode, Fixed soft start, Forced PWM, I2C, I2C Config, I2C bus interface, I2C control, I2C control method, I2C controlled, I2C interface, I2C or GPIO control, I2C support, I2C/PMBus, Light Load Efficiency, MagPack technology, Output discharge, Overcurrent protection, Soft Start Fixed, Soft start, Soft-start, Soft-start fixed, Synchronous Rectifier, Telemetry, Thermal Error Flag, Thermal monitor, Thermal shutdown, Thermal warning, UVLO, UVLO fixed, Undervoltage Lock Out (UVLO), Undervoltage protection, Undervotlage protection, Voltage scaling EMI features Low parasitic Hotrod packaging Operating temperature range (°C) -40 to 125 Type Converter (Integrated Switch), DC/DC converter, Module Duty cycle (max) (%) 100 Control mode COT, Constant on-time (COT), DCS-Control Switching frequency (min) (kHz) 2200, 2300 Switching frequency (max) (kHz) 2500
Rating Catalog Topology Buck, Step-Down Converter, Synchronous Buck Iout (max) (A) 6 Vin (max) (V) 5.5 Vin (min) (V) 2.4 Vout (max) (V) 1.675, 3.35 Vout (min) (V) 0.4, 0.8 Features Digital/I2C compatible, Dynamic voltage scaling, EMI Tested, EMI filtering, Enable, Fast load transient support, Fixed PWM Mode, Fixed soft start, Forced PWM, I2C, I2C Config, I2C bus interface, I2C control, I2C control method, I2C controlled, I2C interface, I2C or GPIO control, I2C support, I2C/PMBus, Light Load Efficiency, MagPack technology, Output discharge, Overcurrent protection, Soft Start Fixed, Soft start, Soft-start, Soft-start fixed, Synchronous Rectifier, Telemetry, Thermal Error Flag, Thermal monitor, Thermal shutdown, Thermal warning, UVLO, UVLO fixed, Undervoltage Lock Out (UVLO), Undervoltage protection, Undervotlage protection, Voltage scaling EMI features Low parasitic Hotrod packaging Operating temperature range (°C) -40 to 125 Type Converter (Integrated Switch), DC/DC converter, Module Duty cycle (max) (%) 100 Control mode COT, Constant on-time (COT), DCS-Control Switching frequency (min) (kHz) 2200, 2300 Switching frequency (max) (kHz) 2500
QFN-FCMOD (RCF) 15 6.9 mm² (2.3 mm × 3 mm)
  • Up to 96% efficiency
  • Excellent thermal performance
  • I2C-compatible interface up to 3.4Mbps
  • 1% output voltage accuracy
  • DCS-Control topology for fast transient response
  • I2C programmable:
    • Output voltage
      • 0.2 – 0.8375V in 2.5mV steps
      • 0.4 – 1.675V in 5mV steps
      • 0.8 – 3.35V in 10mV steps
    • Forced PWM or power save mode
    • Output voltage discharge
  • I2C device status readback of:
    • Thermal warning
    • Hiccup current limit
    • Vin below UVLO
  • Resistor selectable:
    • I2C address
    • 17 start-up output voltage options
  • Designed for low EMI requirements
    • No bond wire package
    • MagPack technology shields inductor and IC
    • Simplified layout through optimized pinout
  • 4µA operating quiescent current
  • –40°C to 125°C operating temperature range
  • 2.3mm × 3.0mm × 1.95mm QFN package
  • 28mm2 design size
  • Also available without I2C interface: TPSM82866A
  • Up to 96% efficiency
  • Excellent thermal performance
  • I2C-compatible interface up to 3.4Mbps
  • 1% output voltage accuracy
  • DCS-Control topology for fast transient response
  • I2C programmable:
    • Output voltage
      • 0.2 – 0.8375V in 2.5mV steps
      • 0.4 – 1.675V in 5mV steps
      • 0.8 – 3.35V in 10mV steps
    • Forced PWM or power save mode
    • Output voltage discharge
  • I2C device status readback of:
    • Thermal warning
    • Hiccup current limit
    • Vin below UVLO
  • Resistor selectable:
    • I2C address
    • 17 start-up output voltage options
  • Designed for low EMI requirements
    • No bond wire package
    • MagPack technology shields inductor and IC
    • Simplified layout through optimized pinout
  • 4µA operating quiescent current
  • –40°C to 125°C operating temperature range
  • 2.3mm × 3.0mm × 1.95mm QFN package
  • 28mm2 design size
  • Also available without I2C interface: TPSM82866A

The TPSM8286xx device family consists of 4A and 6A step-down converter power modules designed for small design size and high efficiency. The power modules uses TI’s MagPack technology to integrate a synchronous step-down converter and an inductor to simplify design, reduce external components, and save PCB area. The compact design is excellent for automated assembly by standard surface mount equipment. Tight output voltage accuracy, even with small output capacitors, is achieved though the DCS-Control architecture and the excellent load transient performance. At medium-to-heavy loads, the converter operates in PWM mode and automatically enters power save mode operation at light load to maintain high efficiency over the entire load current range. The devices can also be forced in PWM mode operation for the smallest output voltage ripple. The I2C interface provides an effective way of adjusting the output voltage, setting the VOUT ramp rate when transitioning to a new setpoint or reading status information like thermal warning or current limit flags. An integrated soft start reduces the inrush current required from the input supply. Overtemperature protection and hiccup short-circuit protection deliver a robust and reliable design.

The TPSM8286xx device family consists of 4A and 6A step-down converter power modules designed for small design size and high efficiency. The power modules uses TI’s MagPack technology to integrate a synchronous step-down converter and an inductor to simplify design, reduce external components, and save PCB area. The compact design is excellent for automated assembly by standard surface mount equipment. Tight output voltage accuracy, even with small output capacitors, is achieved though the DCS-Control architecture and the excellent load transient performance. At medium-to-heavy loads, the converter operates in PWM mode and automatically enters power save mode operation at light load to maintain high efficiency over the entire load current range. The devices can also be forced in PWM mode operation for the smallest output voltage ripple. The I2C interface provides an effective way of adjusting the output voltage, setting the VOUT ramp rate when transitioning to a new setpoint or reading status information like thermal warning or current limit flags. An integrated soft start reduces the inrush current required from the input supply. Overtemperature protection and hiccup short-circuit protection deliver a robust and reliable design.
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Technical documentation

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* Data sheet TPSM8286xx 2.4V to 5.5V Input, 4A/6A, Step-Down Power Modules With Integrated Inductor and I2 C Interface in a MagPack Package datasheet (Rev. C) PDF | HTML Jun 30, 2025
Technical article Power module package types and their benefits PDF | HTML Jul 9, 2024
Technical article MagPack™ technology: Four benefits of new power modules that can help you pack more power in less space PDF | HTML Jul 9, 2024
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML Dec 6, 2023
Application note Intro to Multi-Function Pins and Their Applications in TI Step-Down Converters (Rev. A) PDF | HTML Nov 17, 2022
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML May 23, 2022
Application note Understanding SOA Curves to Operate at High Output Currents and Temperature PDF | HTML May 5, 2022
Functional safety information TPSM82866A and TPSM82864A Pin Failure Mode Analysis (Pin FMA) PDF | HTML Mar 3, 2022
White paper Enabling Higher Data Rates for Optical Modules With Small and Efficient Power PDF | HTML Mar 22, 2021
White paper Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies Oct 14, 2019
Analog design Journal Methods of output-voltage adjustment for DC/DC converters Jun 14, 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec 11, 2018
Analog design Journal Understanding 100% mode in low-power DC/DC converters Jun 22, 2018
Analog design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold Oct 24, 2017
Analog design Journal Improving the thermal performance of a MicroSiP(TM) power module Jul 24, 2017
Analog design Journal Testing tips for applying external power to supply outputs without an input voltage Oct 24, 2016
Analog design Journal Adjusting the soft-start time of an integrated power module Apr 26, 2016
Analog design Journal Understanding frequency variation in the DCS-Control(TM) topology Oct 30, 2015
Analog design Journal Five steps to a great PCB layout for a step-down converter Jan 29, 2015
Analog design Journal Accurately measuring efficiency of ultralow-IQ devices Jan 22, 2014
Analog design Journal High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions Jul 25, 2013
Analog design Journal Design considerations for a resistive feedback divider in a DC/DC converter Apr 26, 2012
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs Sep 19, 2011
Analog design Journal IQ: What it is, what it isn’t, and how to use it Jun 17, 2011

Design & development

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

Evaluation board

TPSM82866CA1PEVM — TPSM82866CA1PEVM evaluation module

The TPSM82866AA0PEVM and TPSM82866CAxPEVM evaluation modules (EVM) facilitate the evaluation of the TPSM82866AA0PRCFR, TPSM82866CA3PRCFR, TPSM82866CA2PRCFR, and TPSM82866CA1PRCFR 6A, pin-to-pin compatible, step-down power modules in a 2.3mm × 3mm × 1.95mm MagPack™ package. The TPSM82866AA0PEVM (...)

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Evaluation board

TPSM82866CA2PEVM — TPSM82866CA2PEVM evaluation module

The TPSM82866AA0PEVM and TPSM82866CAxPEVM evaluation modules (EVM) facilitate the evaluation of the TPSM82866AA0PRCFR, TPSM82866CA3PRCFR, TPSM82866CA2PRCFR, and TPSM82866CA1PRCFR 6A, pin-to-pin compatible, step-down power modules in a 2.3mm × 3mm × 1.95mm MagPack™ package. The TPSM82866AA0PEVM (...)

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Evaluation board

TPSM82866CA3PEVM — TPSM82866C evaluation module

The TPSM82866CA3PEVM evaluation module (EVM) facilitates the evaluation of the TPSM82866C, a 6A pin-to-pin compatible step-down power module with in a 2.3mm × 3mm x 1.95mm MagPack™ package. The EVM provides an I²C adjustable output voltage down to 0.8V, with 1% accuracy from input voltages from (...)
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GUI for evaluation module (EVM)

TPSM8286XCEVM-GUI — GUI for TPSM8286xC EVMs

The TPSM8286xCEVM-GUI interfaces with the TPSM8286xC EVMs via the USB2ANY adaptor to read and write to the device's I2C registers.
Supported products & hardware
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QFN-FCMOD (RCF) 15 Ultra Librarian
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