eFuses & hot swap controllers

Robust and comprehensive integrated power path protection solutions for your system 

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Improve the reliability of your system against overvoltage, short circuit, inrush current and reverse polarity events with our eFuses and hot swap controllers. We’ve taken our single-chip ICs one step further than traditional eFuse devices by implementing discrete protection circuitry for the most robust device and system-level protection. Get started with our eFuse for a tiny, thermally optimized option or choose a hot swap controller with an external pass FET if your design requires more flexibility.

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TPS1685
eFuses & hot swap controllers

9V to 80V, 3.65mΩ 20A stackable integrated hotswap (eFuse) with accurate and fast current monitor

Approx. price (USD) 1ku | 3.19

TPS7H2211-SEP
eFuses & hot swap controllers

Radiation-tolerant 4.5-V to 14-V input 3.5-A eFuse

Achieve robust, high power density & lower cost power path-protection designs

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Fast, accurate power-path protection & monitoring

Get fast, accurate protection against various faults with user-configurable threshold and timings, along with monitoring and diagnostic capabilities.

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Simple & efficient design

Eliminate the complexity of selecting and optimizing your pass FET and discrete protection components. With our integrated solutions, you can reduce your printed circuit board (PCB) area by up to 70%.

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Fast time to market

Reduce circuit design and testing time by selecting eFuses that meet the criteria for various safety and performance certification standards such as UL, IEC and VDE.

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Small size & low RON

Design high-density systems and minimize power dissipation, self-heating and bus voltage droop with our small size and low RON eFuses and hot swap controllers.

Technical resources

Application note
Application note
Basics of eFuses (Rev. A)
Read this application note to understand the challenges and limitations of discrete circuit protection options in contrast to integrated solutions.
document-pdfAcrobat PDF
Video series
Video series
Utilizing eFuses in your designs
This training shows you how to implement our power-protection devices and the features they offer. These are flexible and reliable devices, protecting against overvoltage, short circuit, inrush current and reverse polarity events.
Technical article
Technical article
How a fully-stackable eFuse can help meet ever-increasing power needs of servers
As demand for data increases, so does demand for servers and data centers, and thus higher demand for power. Learn how our eFuses help meet increasing server power needs with low RDS(ON) and fast and accurate current monitoring.
document-pdfAcrobat PDF

Discover featured applications

Storage & memory
Protect data from transient events in memory systems
Servers
Design reliable and scalable server power systems
Factory automation & control
Create customized solutions for field and backplane power systems
High-performance computing
Design fault- and transient event-resistant computing systems
Projectors & printers
Improve power quality and product longevity with proven ICs
PC & notebooks
Design versatile PC power supplies that address consumer needs

Protect data from transient events in memory systems

In vital memory systems, the protection of data from power transients is as important as the protection of data from theft. Our eFuses and hot-swap controllers help protect memory and storage system power supplies, and are available in space-conscious and power-efficient packages.

Benefits:

  • Overtemperature and hot-swap protection.
  • Adjustable slew rate and current limiting, with wide operating voltages.
  • Power-dense small packaging.

Featured resources

REFERENCE DESIGNS
  • TIDA-00429 – e-Fuse Power Switch with DevSleep SATA Interface
  • TIDA-00304 – Last Gasp Hold Up Energy Storage Solution
PRODUCTS
  • TPS25947 – 2.7-V to 23-V, 28-mΩ, 5.5-A eFuse with integrated reverse polarity protection
  • TPS25942A – 2.7-V to 18-V, 42mΩ, 0.6-5.2A eFuse with reverse current blocking, IMON and PG
  • TPS25944L – 2.7-V to 18-V, 42mΩ, 0.6-5.2A eFuse with reverse current blocking

Design reliable and scalable server power systems

With artificial intelligence and cloud computing, data server power and reliability needs are increasing exponentially. With our highly integrated eFuses and hot-swap controllers, you can design server power systems to accommodate higher power levels and help ensure reliability. 

Benefits:

  • Very high power density.
  • Adjustable current, voltage and overtemperature protections available.
  • PMBus options for more tailored solutions.

Featured resources

PRODUCTS
  • TPS25990 – 2.9-V to 16-V, 0.79-mΩ, 60-A eFuse with digital telemetry controller
  • TPS25985 – 4.5-V to 16-V, 0.59-mΩ, 80-A stackable compact eFuse with accurate and fast current monitor
  • TPS25982 – 2.7-V to 24-V, 2.7-mΩ, 15-A eFuse with hot-swap protection, ±1.5% current monitor & adj. fault mgmt.

Create customized solutions for field and backplane power systems

Automation and control power needs can vary substantially within the same production lines. Simplify your designs with the high level of integration of our eFuses, while increasing flexibility in protection thresholds.

Benefits:

  • Adjustable slew rate, overvoltage and overcurrent protection with selectable fault responses.
  • Fault diagnostics and accurate current, voltage and power limiting.
  • Thermal shutdown and small footprints.

Featured resources

PRODUCTS
  • TPS1641 – 2.7-V to 40-V 152-mΩ 1.8-A eFuse with output power limiting
  • TPS2663 – 4.5-V to 60-V, 31mΩ, 0.6-6A eFuse with output power limiting and surge protection
  • TPS2661 – 50-V, universal 4-20-mA, ±20-mA current loop protector

Design fault- and transient event-resistant computing systems

Our integrated circuits enable customized protection of high-performance computing systems that are reliable, efficient and power dense. 

Benefits:

  • Advanced system protection from external events and fault conditions.
  • Customizable monitoring through PMBus.

Featured resources

PRODUCTS
  • LM5066I – 10-V to 80-V hot swap controller with improved current, voltage and power monitoring accuracy
  • TPS25990 – 2.9-V to 16-V, 0.79-mΩ, 60-A eFuse with digital telemetry controller
  • TPS2663 – 4.5-V to 60-V, 31mΩ, 0.6-6A eFuse with output power limiting and surge protection

Improve power quality and product longevity with proven ICs

Enabling 1080p and 4K projector picture resolution standards requires flexible power supplies and precise power protections. Similarly, in printers, strong power management contributes to smoother printing and higher-quality pictures. Our eFuses and hot-swap controllers provide the necessary protections for your designs and come in small packages.

Benefits:

  • Adjustable voltage and current protections.
  • Low power consumption for standby modes.
  • High levels of integration to reduce bill of materials and simplify board designs.

Featured resources

PRODUCTS
  • TPS2660 – 4.2-V to 60-V, 150mΩ, 0.1-2.23A eFuse with integrated input reverse polarity protection
  • TPS2663 – 4.5-V to 60-V, 31mΩ, 0.6-6A eFuse with output power limiting and surge protection
  • TPS2595 – 2.7-V to 18-V, 34mΩ, 0.5-4A eFuse with over voltage protection in small WSON package

Design versatile PC power supplies that address consumer needs

Our devices prioritize two key aspects of PC power-supply designs: small form factors and protection against transient events. Users are constantly plugging and unplugging PCs from power sources, docking stations and various peripherals. Our eFuses bring protect your designs without sacrificing size.

Benefits: 

  • Wide voltage ranges and protections such as overcurrent, overvoltage, hot swap and more.
  • Small packaging at less than 10 mm2, with options smaller than 5 mm2.

Featured resources

REFERENCE DESIGNS
  • TIDA-03030 – USB Type-C™ Power-Path Protection With Audio Accessory Support Reference Design
  • TIDA-00233 – 24VDC 10A eFuse and Protection Circuit for Programmable Logic Controllers (PLC)
PRODUCTS
  • TPS25946 – 2.7-V to 23-V, 5.5-A, 28-mΩ eFuse with bi-directional current support
  • TPS2595 – 2.7-V to 18-V, 34mΩ, 0.5-4A eFuse with over voltage protection in small WSON package
  • TPS25923 – 4.5-V to 5.5-V, 28mΩ, 1-5A eFuse with driver for external blocking FET

Design & development resources

Calculation tool
Hot Swap Design Calculator Tools

Creating a Hot Swap and/or eFuse design can involve complex formulas and calculations. Simplify the process by entering system requirements such as input voltage range, current, and output capacitance and the calculator will guide the user towards developing a robust design.  The tool may also (...)

CALCULATION TOOL
TVS diode recommendation tool
Transient voltage suppressors (TVS) diodes are common components used to protect semiconductor devices from overvoltage events.  Use this tool to simplify the selection of the TVS diode to protect eFuses from overvoltage during a short-circuit event on the output of the device.
Evaluation board
TPS2663x eFuse Evaluation Module

The TPS26630-33EVM allows reference circuit evaluation of TI's TPS2663x eFuse. The TPS2663X devices are 4.5V - 60V, 6A Industrial eFuse with integrated FET, programmable under voltage, over voltage, input reverse polarity, over current and inrush current protection features.

Reference designs related to eFuses & hot swap controllers

Use our reference design selection tool to find designs that best match your application and parameters.