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TPS82085

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3A, High-Efficiency Step-Down Converter Module with Integrated Inductor

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Data sheet

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Similar functionality to the compared device.
TPSM82813 ACTIVE 2.75-V to 6-V, 3-A step-down module with adjustable-frequency & tracking in 3 x 4-mm μSIP package Low-noise fixed frequency operation, frequency synchronization, adjustable soft start and more.
TPSM82823 ACTIVE 5.5-V input, 3-A step-down module with integrated inductor in 2.0-mm × 2.5-mm × 1.1-mm uSiP package Next generation module with higher efficiency and smaller total BOM size.

TPS82085

ACTIVE
Data sheet Order now

Product details

Iout (max) (A) 3 Vin (min) (V) 2.5 Vin (max) (V) 6 Vout (min) (V) 0.8 Vout (max) (V) 6 Soft start Fixed Features EMI Tested, Enable, Light Load Efficiency, Output discharge, Power good Operating temperature range (°C) -40 to 125 Iq (typ) (mA) 0.017 Regulated outputs (#) 1 Switching frequency (max) (kHz) 2800 Switching frequency (min) (kHz) 2000 Duty cycle (max) (%) 100 Topology Buck, Synchronous Buck Type Module Rating Catalog Control mode Constant on-time (COT), DCS-Control
Iout (max) (A) 3 Vin (min) (V) 2.5 Vin (max) (V) 6 Vout (min) (V) 0.8 Vout (max) (V) 6 Soft start Fixed Features EMI Tested, Enable, Light Load Efficiency, Output discharge, Power good Operating temperature range (°C) -40 to 125 Iq (typ) (mA) 0.017 Regulated outputs (#) 1 Switching frequency (max) (kHz) 2800 Switching frequency (min) (kHz) 2000 Duty cycle (max) (%) 100 Topology Buck, Synchronous Buck Type Module Rating Catalog Control mode Constant on-time (COT), DCS-Control
USIP (SIL) 8 —
  • Low Profile MicroSiP™ Power Module
  • DCS-control topology
  • Up to 95% efficiency
  • 17-µA operating quiescent current
  • -40°C to 125°C operating temperature range
  • Hiccup short circuit protection
  • 2.5-V to 6-V input voltage range
  • 0.8-V to VIN adjustable output voltage
  • Power save mode for light load efficiency
  • 100% duty cycle for lowest dropout
  • Output discharge function
  • Power good output
  • Integrated soft startup, and support pre-biased startup
  • Over temperature protection
  • CISPR11 class B compliant
  • 2.8-mm x 3.0-mm x 1.3-mm 8-Pin µSiL package
  • Low Profile MicroSiP™ Power Module
  • DCS-control topology
  • Up to 95% efficiency
  • 17-µA operating quiescent current
  • -40°C to 125°C operating temperature range
  • Hiccup short circuit protection
  • 2.5-V to 6-V input voltage range
  • 0.8-V to VIN adjustable output voltage
  • Power save mode for light load efficiency
  • 100% duty cycle for lowest dropout
  • Output discharge function
  • Power good output
  • Integrated soft startup, and support pre-biased startup
  • Over temperature protection
  • CISPR11 class B compliant
  • 2.8-mm x 3.0-mm x 1.3-mm 8-Pin µSiL package

The TPS82084/5 are 2-A/3-A step-down converter MicroSiP™ modules optimized for small solution size and high efficiency. The power module integrates a synchronous step-down converter and an inductor to simplify design, reduce external components and save PCB area. The low profile and compact solution is suitable for automated assembly by standard surface mount equipment.

To maximize efficiency, the converter operates in PWM mode with a nominal switching frequency of 2.4MHz and automatically enters Power Save Mode operation at light load currents. In Power Save Mode, the device operates with typically 17-µA quiescent current. Using the DCS-Control topology, the device achieves excellent load transient performance and accurate output voltage regulation. The EN and PG pins, which support sequencing configurations, bring a flexible system design. An integrated soft startup reduces the inrush current required from the input supply. Over temperature protection and Hiccup short circuit protection deliver a robust and reliable solution.

The TPS82084/5 are 2-A/3-A step-down converter MicroSiP™ modules optimized for small solution size and high efficiency. The power module integrates a synchronous step-down converter and an inductor to simplify design, reduce external components and save PCB area. The low profile and compact solution is suitable for automated assembly by standard surface mount equipment.

To maximize efficiency, the converter operates in PWM mode with a nominal switching frequency of 2.4MHz and automatically enters Power Save Mode operation at light load currents. In Power Save Mode, the device operates with typically 17-µA quiescent current. Using the DCS-Control topology, the device achieves excellent load transient performance and accurate output voltage regulation. The EN and PG pins, which support sequencing configurations, bring a flexible system design. An integrated soft startup reduces the inrush current required from the input supply. Over temperature protection and Hiccup short circuit protection deliver a robust and reliable solution.
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TPS82084 ACTIVE 2-A, High-efficiency step-down converter module with integrated inductor Drop-in alternative with lower output current.

Technical documentation

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Type Title Date
* Data sheet TPS82084 (2-A) / TPS82085 (3-A) High Efficiency Step-Down Converter MicroSiP Modules with Integrated Inductor datasheet (Rev. D) PDF | HTML 04 Jun 2019
More literature Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 23 May 2022
Selection guide Innovative DC/DC Power Modules Selection Guide (Rev. D) 14 Oct 2021
User guide Manufacturing and Rework Design Guide for MicroSiP™ Power Modules (Rev. A) PDF | HTML 16 Jun 2021
More literature Soldering Considerations for Power Modules (Rev. B) PDF | HTML 17 May 2021
More literature Enabling Higher Data Rates for Optical Modules With Small and Efficient Power 22 Mar 2021
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 14 Jun 2019
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 22 Jun 2018
More literature Benefits and trade-offs of various power-module package options 02 Aug 2017
Analog Design Journal Improving the thermal performance of a MicroSiP(TM) power module 24 Jul 2017
More literature Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 15 Jun 2017
Technical article Don’t power your FPGA like this! 03 Nov 2016
Analog Design Journal Testing tips for applying external power to supply outputs without an input volt 24 Oct 2016
Analog Design Journal Adjusting the soft-start time of an integrated power module 26 Apr 2016
Technical article A flexible, easy-to-design MicroSiP power module for portable test and measurement 26 Jan 2016
More literature SiP Power Modules White Paper 26 Jan 2016
Technical article MicroSiP: Five years of the world’s smallest power solution 21 Nov 2015
Analog Design Journal Understanding frequency variation in the DCS-Control(TM) topology 30 Oct 2015
Technical article Is a power module always the optimal solution for your space constrained SSD? 17 Oct 2015
EVM User's guide TPS82085EVM-672 User's Guide (Rev. B) 25 Sep 2015
Analog Design Journal High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions 25 Jul 2013
More literature Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 Sep 2011
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011

Design & development

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

Evaluation board

TPS82085EVM-672 — 3-A Step Down Converter with Integrated Inductor Evaluation Module

The TPS82085EVM-672 is designed to help the user easily evaluate and test the operation and functionality of the TPS82085. The EVM converts up to a 6-V input voltage to a 1.2-V regulated output voltage at up to 3A of output current. The TPS82085 includes the IC and inductor to achieve a total (...)

User guide: PDF
Not available on TI.com
Evaluation board

TSW40RF80EVM — 2T2R RF-Sampling Transceiver w/ Dual 14-Bit 3GSPS ADC/9GSPS DAC Clocking Solution Evaluation Module

The TSW40RF80 evaluation module (EVM) is a two-transmit two-receive (2T2R) RF-sampling transceiver reference design. The module contains the DAC38RF80 dual-channel RF-sampling digital-to-analog converter (DAC) and the ADC32RF45 dual-channel RF-sampling analog-to-digital converter (ADC).

The (...)

User guide: PDF
Not available on TI.com
Evaluation board

TSW40RF82EVM — 2T2R RF-Sampling Transceiver w/ Dual 14-Bit 3GSPS ADC/9GSPS DAC Clocking Solution Evaluation Module

The TSW40RF82 evaluation module (EVM) is a two-transmit two-receive (2T2R) RF-sampling transceiver reference design. The module contains the DAC38RF82 dual-channel RF-sampling digital-to-analog converter (DAC) and the ADC32RF45 dual-channel RF-sampling analog-to-digital converter (ADC).

The (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS82085 PSpice Unencrypted Transient Model (Rev. B)

SLVMAT3B.ZIP (98 KB) - PSpice Model
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Calculation tool

Design Tool for Output Voltage Adjustment Using a DAC

SLVC780.ZIP (138 KB)
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Gerber file

TPS82085EVM-672 Gerbers

SLVRBE1.ZIP (214 KB)
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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 (...)
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Reference designs

TIDA-010011 — High efficiency power supply architecture reference design for protection relay processor module

This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01435 — High-Bandwidth Zero-IF Reference Design for Microwave Backhaul

The TSW40RF82EVM reference design provides a platform to interface the DAC38RF82 with a high-performance modulator - the TRF370417EVM. The TRF370417EVM can modulate wideband signals at up to 6 GHz as would be typical for a microwave backhaul application. The TRF370417 device may be substituted for (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00823 — 16-Bit 1-GSPS Digitizer Reference Design with AC and DC Coupled Fixed Gain Amplifier

This reference design discusses the use and performance of the Ultra-Wideband, Fixed-gain high-speed amplifier, the LMH3401 to drive the high-speed analog-to-digital converter (ADC), the ADS54J60 device. Different options for common-mode voltages, power supplies, and interfaces are discussed and (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00822 — 16-Bit 1-GSPS Digitizer Reference Design with AC and DC Coupled Variable Gain Amplifier

This reference design discusses the use and performance of the Digital Variable-Gain high-speed amplifier, the LMH6401, to drive the high-speed analog-to-digital converter (ADC), the ADS54J60 device. Different options for common-mode voltages, power supplies, and interfaces are discussed and (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
USIP (SIL) 8 View options

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