Power switches

Solutions for your distribution, protection or diagnostics needs

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Power switches provide an electrical connection from a voltage source or ground to a load. Our diverse portfolio includes several topologies, from simple load switches to smart power switches. Sequencing, protection against common IC events, diagnostic telemetry and more are made possible with our power switches.

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Related categories
USB power switches & charging port controllers

See our fixed current-limited switches, precision adjustable-limit switches, USB charging port controllers, switch with boost converters and switches with LDO regulators.

TPS4810-Q1
High-side switch controllers

Automotive, 100V low IQ dual high-side driver with short circuit protection and diagnostics

Approx. price (USD) 1ku | 1.475

TPSI3100-Q1
Solid-state relays

Automotive reinforced isolated switch driver with 15V gate supply and dual isolated comparators

Approx. price (USD) 1ku | 2.85

LM74704-Q1
Ideal diode/ORing controllers

Automotive ideal diode controller with FET good open-drain output

Approx. price (USD) 1ku | 0.599

TPS281C100
High-side switches

6-V to 60-V, 100-mΩ, 4.5-A single-channel high-side switch

Approx. price (USD) 1ku | 0.8

TPS22996
Load switches

2-ch, 5.5-V, 4-A, 14-mΩ on-resistance load switch with adjustable rise time

Approx. price (USD) 1ku | 0.128

Power trends

Power switches for power density

With the integration of active and passive components, power switches enable you to achieve higher power density for your power distribution. Our power switches reduce power dissipation and add a number of protection and diagnostic features to ensure your system is fully protected without compromising board space. Our devices also reduce your footprint or improve heat dissipation.

Featured products for Power density
TPS22992 ACTIVE 5.5-V, 6-A, 8.7-mΩ load switch with adjustable rise time and adjustable quick output discha
TPS2597 ACTIVE 2.7-V–23-V, 7-A, 9.8-mΩ eFuse with accurate current monitor and transient overcurrent blanking
TPS272C45 ACTIVE 36-V, 45-mΩ, 3-A, 2-ch, Industrial high-side switch with adjustable current limit

Power switches for low quiescent current (IQ)

Extend battery run-time without giving up system performance with our power switches. Our power switches can reduce leakage current when modules are powered off with their ultra-low shutdown current (ISD). Our devices also offer solutions with low IQ, which can help to extend battery life when the system is operating in a standby mode.

Featured products for low quiescent current (IQ)
LM74720-Q1 ACTIVE Automotive, low IQ ideal diode controller with active rectification and load dump protection
TPS2116 ACTIVE 1.6-V to 5.5-V, 40-mΩ, 2.5-A, low-IQ, priority power multiplexer
TPS22916 ACTIVE 5.5-V, 2-A, 60-mΩ, 10-nA leakage load switch with output discharge

Isolation

Improve system safety with higher reliability isolation compared to electromechanical and traditional photorelay solutions. Using industry-leading capacitive and magnetic isolation technology, our solid-state relay (SSR) portfolio of isolated switches and drivers forms a complete isolated solid-state relay solution with no moving parts. Our SSRs completely integrate the power and signal transfer over an isolation barrier in a single chip reducing solution size and cost for automotive and industrial applications.

Technical resources

E-book
E-book
11 Ways to Protect Your Power Path
Discover the ways various power switches can be used to solve difficult power design challenges.
document-pdfAcrobat PDF
Application note
Application note
Basics of Power Switches (Rev. A)
This application report highlights different topologies within the power switch portfolio and provides suggestions for choosing the correct solution for power-path needs.
document-pdfAcrobat PDF
Video
Video
Load Switches vs Discrete MOSFETs
This introductory video compares our discrete load switches and integrated solutions.

Discover featured applications

Zonal & body domain controller
Build flexible zonal modules driving a variety of loads and reduce vehicle weight with optimized cabling
HEV/EV battery-management system (BMS)
Isolated switches and drivers for insulation resistance monitoring in high-voltage battery packs
Factory automation & control
Distribute 24-V power across the factory floor safely and drive offboard loads in programmable logic control, motor drive and robotics applications
Servers
Design reliable and scalable server power systems
Grid infrastructure
Bring efficiency and reliability to grid metering and EV charging applications
Building automation
Enable more automation in residential and commercial buildings with small-sized, low-power devices

Build flexible zonal modules driving a variety of loads and reduce vehicle weight with optimized cabling

As automotive electrical demands grow, the industry is reducing cabling, relays and fuses in favor of more compact and integrated solutions. Our devices deliver the functionality you need, with protections and accurate diagnostics. 

Benefits: 

  • Options include internal and external field-effect transistors with high-side switches and high-side switch controllers, respectively.
  • Replacing discrete relays and fuses optimizes vehicle cabling and thus reduces weight.
  • Fault-detection measures.

Featured resources

REFERENCE DESIGNS
  • TIDA-00745 – 15-W System-Level Power Reference Design for Automotive Body Control Module
PRODUCTS
  • TPS1HC30-Q1 – Automotive, 30-mΩ, 5-A single-channel smart high-side switch
  • TPS4811-Q1 – Automotive 3.5-V to 80-V high side driver with protection and diagnostics
  • LM74900-Q1 – Automotive ideal diode with circuit breaker, under- and overvoltage protection with fault output

Isolated switches and drivers for insulation resistance monitoring in high-voltage battery packs

Enable highly accurate monitoring and control over high-voltage battery stacks. Our integrated solid-state relays and resources help you create designs for battery pack passive balancing, battery disconnect units, battery control units and wired cell supervisor circuits. 

Benefits: 

  • Resolution of voltage and temperature measurements at the cell level.
  • Accurate current sensing at the pack level. 

Featured resources

REFERENCE DESIGNS
  • TIDA-010232 – AFE for insulation monitoring in high-voltage EV charging and solar energy reference design
  • TIDA-050058 – Zero-cross switching for solid-state relays reference design
PRODUCTS
  • TPSI2140-Q1 – Automotive 1200-V 50-mA isolated switch with 2-mA avalanche rating
  • TPSI3052-Q1 – Automotive reinforced isolated switch driver with integrated 15-V gate supply

Distribute 24-V power across the factory floor safely and drive offboard loads in programmable logic control, motor drive and robotics applications

Expanding factory automation and control capacities requires close scrutiny of power-management system designs. Our devices enable flexible power delivery and diagnostics features so that you can design a reliable power solution.  

Benefits: 

  • High-side switches with adjustable current limits and current sensing for diagnosing load events such as wire breaks, short circuits and overload currents.
  • eFuses enable input power protection through reverse current blocking, reverse polarity protection, current monitoring, short-circuit protection and thermal shutdown.

Featured resources

REFERENCE DESIGNS
  • TIDA-01552 – 8 Channel, 2-A High-Side Driver Reference Design for Digital Output Modules
  • TIDA-03031 – Input Protection and Backup Supply Reference Design for 25W PLC Controller Unit
PRODUCTS
  • TPS274C65 – 12-V to 36-V 65-mΩ four-channel high-side switch with SPI interface and integrated ADC
  • TPS281C30 – 60-V tolerant, 30-mΩ 6-A single-channel high-side switch
  • TPS2663 – 4.5-V to 60-V, 31mΩ, 0.6-6A eFuse with output power limiting and surge protection

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

REFERENCE DESIGNS
  • PMP10896 – Complete PMBus Power System for Enterprise Ethernet Switches Reference Design
PRODUCTS
  • LM25066A – 2.9-V to 17-V hot swap controller with I2C and PMBus with increased monitoring accuracy
  • 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.
HARDWARE DEVELOPMENT
  • TPS25985EVM – TPS25985 evaluation module for 4.5-V to 16-V, 80-A, 0.59-mΩ eFuse

Bring efficiency and reliability to grid metering and EV charging applications

The popularity of electric vehicles (EVs) and smart homes are increasing demands on power systems. Efficient and uninterrupted power supplies ensure greater reliability for grid automation and smart metering applications.

Benefits: 

  • Multiplex between the main and backup supplies for last-gasp transmissions in electricity meters.
  • Optimize protections for external communication modules in electricity meters.
  • Extend battery life in water and gas meters with low-quiescent-current load switches.
  • Provide power distribution to different modules inside DC EV charging stations.

Featured resources

REFERENCE DESIGNS
  • TIDA-01451 – Power Switching Reference Design for Set Top Box
  • TIDA-00233 – 24VDC 10A eFuse and Protection Circuit for Programmable Logic Controllers (PLC)
PRODUCTS
  • TPS2121 – 2.7-V to 22-V, 56-mΩ, 4.5-A, power mux with seamless switchover
  • TPS22917 – 5.5-V, 2-A, 80-mΩ , 10-nA leakage load switch adj. rise time and adj output discharge
  • TPS2663 – 4.5-V to 60-V, 31mΩ, 0.6-6A eFuse with output power limiting and surge protection

Enable more automation in residential and commercial buildings with small-sized, low-power devices

The advantages of our power switches enable design targets for automated systems focused on power efficiency. TI power switches continue to decrease in size and quiescent current and expand in protection features, enabling building automation and security designs to operate longer in smaller form factors with increased efficiency.

Benefits:

  • Low quiescent current enables efficient designs.
  • Reverse current blocking and inrush current control.
  • Thermal shutdown protects devices from overheating.
  • Solutions as small as 1 mm2. 

Featured resources

REFERENCE DESIGNS
  • TIDA-010224 – Low-power wireless camera reference design for extended battery life
PRODUCTS
  • TPS2117 – 1.6-V to 5.5-V, 20-mΩ, 4-A low IQ power multiplexer with manual and priority switchover
  • TPS1641 – 2.7-V to 40-V 152-mΩ 1.8-A eFuse with output power limiting
  • TPS22916 – 5.5-V, 2-A, 60-mΩ, 10-nA leakage load switch with output discharge

Reference designs related to Power switches

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