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TPS84A20

ACTIVE

2.95V to 17V, 10A Synchronous Buck, Integrated Power Solution

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Data sheet

A newer version of this product is available

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NEW TPSM843A22 ACTIVE 4-V to 18-V input, advanced current mode, 12-A synchronous SWIFT™ step-down power module Smaller solution size and higher efficiency

TPS84A20

ACTIVE
Data sheet Order now

Product details

Iout (max) (A) 10 Vin (max) (V) 17
Iout (max) (A) 10 Vin (max) (V) 17
B3QFN (RVQ) 42 100 mm² 10 x 10
  • Complete integrated power solution allows
    small footprint, low-profile design
  • 10-mm × 10-mm × 4.3-mm package
  • Efficiencies up to 95%
  • Eco-mode™ / light load efficiency (LLE)
  • Wide-output voltage adjust
    0.6 V to 5.5 V, with 1% reference accuracy
  • Supports parallel operation for higher current
  • Optional split power rail allows
    input voltage down to 2.95 V
  • Adjustable switching frequency
    (200 kHz to 1.2 MHz)
  • Synchronizes to an external clock
  • Provides 180° out-of-phase clock signal
  • Adjustable slow-start
  • Output voltage sequencing / tracking
  • Power-good output
  • Programmable undervoltage lockout (UVLO)
  • Overcurrent and overtemperature protection
  • Prebias output start-up
  • Operating temperature range: –40°C to +85°C
  • Enhanced thermal performance: 13.3°C/W
  • Meets EN55022 Class B Emissions
  • Complete integrated power solution allows
    small footprint, low-profile design
  • 10-mm × 10-mm × 4.3-mm package
  • Efficiencies up to 95%
  • Eco-mode™ / light load efficiency (LLE)
  • Wide-output voltage adjust
    0.6 V to 5.5 V, with 1% reference accuracy
  • Supports parallel operation for higher current
  • Optional split power rail allows
    input voltage down to 2.95 V
  • Adjustable switching frequency
    (200 kHz to 1.2 MHz)
  • Synchronizes to an external clock
  • Provides 180° out-of-phase clock signal
  • Adjustable slow-start
  • Output voltage sequencing / tracking
  • Power-good output
  • Programmable undervoltage lockout (UVLO)
  • Overcurrent and overtemperature protection
  • Prebias output start-up
  • Operating temperature range: –40°C to +85°C
  • Enhanced thermal performance: 13.3°C/W
  • Meets EN55022 Class B Emissions

The TPS84A20 is an easy-to-use integrated power solution that combines a 10-A DC/DC converter with power MOSFETs, an inductor, and passives into a low profile, QFN package. This total power solution allows as few as three external components and eliminates the loop compensation and magnetics part selection process.

The 10-mm × 10-mm × 4.3-mm QFN package is easy to solder onto a printed circuit board and allows a compact point-of-load design. Achieves greater than 95% efficiency and excellent power dissipation capability with a thermal impedance of 13.3°C/W. The TPS84A20 offers the flexibility and the feature-set of a discrete point-of-load design and is ideal for powering a wide range of ICs and systems. Advanced packaging technology affords a robust and reliable power solution compatible with standard QFN mounting and testing techniques.

The TPS84A20 is an easy-to-use integrated power solution that combines a 10-A DC/DC converter with power MOSFETs, an inductor, and passives into a low profile, QFN package. This total power solution allows as few as three external components and eliminates the loop compensation and magnetics part selection process.

The 10-mm × 10-mm × 4.3-mm QFN package is easy to solder onto a printed circuit board and allows a compact point-of-load design. Achieves greater than 95% efficiency and excellent power dissipation capability with a thermal impedance of 13.3°C/W. The TPS84A20 offers the flexibility and the feature-set of a discrete point-of-load design and is ideal for powering a wide range of ICs and systems. Advanced packaging technology affords a robust and reliable power solution compatible with standard QFN mounting and testing techniques.
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Technical documentation

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Type Title Date
* Data sheet TPS84A20 2.95-V to 17-V Input, 10-A Synchronous Buck, Integrated Power Solution datasheet (Rev. C) PDF | HTML 19 Dec 2019
Application note Soldering Requirements for BQFN Packages (Rev. C) 05 Mar 2020
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23 Apr 2013
Application note TPS84A20 Parallel Operation 21 Feb 2013
Application note Powering TPS84k Devices from 3.3 V 04 Jan 2013
More literature TPS84k Integrated Power Modules Info Card (Rev. A) 28 Aug 2012
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 12 Jul 2005
Application note AN-643 EMI/RFI Board Design (Rev. B) 03 May 2004

Design & development

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

Reference designs

PMP8610 — Arria V Power Reference Design

Power Solution Reference Design for Arria V FPGA from Altera.  This solution uses integrated inductor modules for ease of use to help design power solution for Arria V FPGA from Altera.  This design incorporate sequencing need for the PFGA as well.

Special Note

Go to the TPS84 to LMZ3 part number (...)

Test report: PDF
Schematic: PDF
Reference designs

PMP9335 — Multi-output Multi-buck 20W Power Supply for Xilinx Zynq FPGA Applications Reference Design

PMP9335 is designed for Xilinx Zynq FPGA applications utilizing the TPS84A20 and TPS84320. This design uses an external timer to synchronize the switching frequency to 300 kHz. It also employs a controlled power up and power down sequence.
Test report: PDF
Schematic: PDF
Package Pins Download
B3QFN (RVQ) 42 View options
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