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Power modules (integrated inductor)
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Power management
DC/DC power modules
Power modules (integrated inductor)

TPS84259

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4.5V to 40V, 2A up to 15W Negative-Output Integrated Power Solution

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Data sheet

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TPSM63603 ACTIVE High-density, 3-V to 36-V input, 1-V to 16-V output, 3-A power module Smaller footprint, lower EMI and configurable in inverting buck-boost.

TPS84259

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck-Boost, Inverting Type Converter Iout (max) (A) 2 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) -3 Vout (max) (V) -17 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 900 Features Over Current Protection
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck-Boost, Inverting Type Converter Iout (max) (A) 2 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) -3 Vout (max) (V) -17 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 900 Features Over Current Protection
B1QFN (RKG) 41 99 mm² 11 x 9
  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • Wide Input-Voltage Range from 4.5 V to 40 V
  • Output Adjustable from  –3 V to –17 V
  • Supplies up to 2-A of Output Current
  • 45-V Surge Capability
  • Synchronizes to an External Clock
  • Adjustable Slow Start
  • Programmable Undervoltage Lockout (UVLO)
  • Output Overcurrent Protection
  • Overtemperature Protection
  • Operating Temperature Range: –40°C to +85°C
  • Enhanced Thermal Performance: 14°C/W
  • Meets EN55022 Class B Emissions
  • For Design Help visit http://www.ti.com/TPS84259
  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • Wide Input-Voltage Range from 4.5 V to 40 V
  • Output Adjustable from  –3 V to –17 V
  • Supplies up to 2-A of Output Current
  • 45-V Surge Capability
  • Synchronizes to an External Clock
  • Adjustable Slow Start
  • Programmable Undervoltage Lockout (UVLO)
  • Output Overcurrent Protection
  • Overtemperature Protection
  • Operating Temperature Range: –40°C to +85°C
  • Enhanced Thermal Performance: 14°C/W
  • Meets EN55022 Class B Emissions
  • For Design Help visit http://www.ti.com/TPS84259

The TPS84259 is an easy-to-use negative output voltage power module that combines a 15-W DC/DC converter with an inductor, and passives into a low-profile QFN package. This total power solution allows as few as five external components and eliminates the loop compensation and magnetics part selection process.

The 9 × 11 × 2.8 mm QFN package is easy to solder onto a printed circuit board. Its compact design also contains fewer components and possesses excellent power dissipation capability. The TPS84259 offers the flexibility and the feature-set of a discrete design and is ideal for powering a wide range of ICs and analog circuits requiring a negative output voltage. Advanced packaging technology affords a robust and reliable power solution, compatible with standard QFN mounting and testing techniques.

The TPS84259 is an easy-to-use negative output voltage power module that combines a 15-W DC/DC converter with an inductor, and passives into a low-profile QFN package. This total power solution allows as few as five external components and eliminates the loop compensation and magnetics part selection process.

The 9 × 11 × 2.8 mm QFN package is easy to solder onto a printed circuit board. Its compact design also contains fewer components and possesses excellent power dissipation capability. The TPS84259 offers the flexibility and the feature-set of a discrete design and is ideal for powering a wide range of ICs and analog circuits requiring a negative output voltage. 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 TPS84259 4.5-V to 40-V Input, 15-W, Negative Output, Integrated Power Solution datasheet (Rev. D) 11 Apr 2018
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 Reducing Output Ripple and Noise with the TPS84259 06 Nov 2012
More literature TPS84k Integrated Power Modules Info Card (Rev. A) 28 Aug 2012
EVM User's guide Using the TPS84259EVM-001 21 Jun 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.

Simulation model

TPS84259 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM692A.ZIP (33 KB) - PSpice Model
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Calculation tool

SLVC443 — TPS84259 Calculator ver 1.0.2

Supported products & hardware

Supported products & hardware

Products
Power modules (integrated inductor)
TPS84259 — 4.5V to 40V, 2A up to 15W Negative-Output Integrated Power Solution
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Reference designs

PMP8372 — 40V Dual 1A Power Module w/Low Noise LDOs Split-Rail (±5V) Output Voltages Reference Design

The PMP8372 design is optimized for small size and uses the TPS84250 step-down power module on the top- side with the TPS84259 negative output power module on the bottom-side to implement both positive and negative output voltages from a 12V/24V source. The output voltages can be adjusted from (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
B1QFN (RKG) 41 Ultra Librarian
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