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Self-Powered AC Solid State Relay with MOSFETs Reference Design

(ACTIVE) TIDA-00377

Description & Features

Technical Documents

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Key Document

Description

The self-powered AC solid state relay with MOSFETs reference design is a single relay replacement that enables efficient power management for a low-power alternative to standard electromechanical relays in thermostat applications. This SSR reference design is self-powered through the 24V AC power line, eliminating additional power consumption of thermostat battery. The MOSFETs can switch fast enough to allow self-charging without affecting the load.

Features
  • No clicking sound
  • Cost efficient BOM
  • MOSFET-based design for fast on/off switching
  • Zero thermostat battery power consumption
  • Under-voltage and over-current protection

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




TI Devices (7)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ATL431  2.5V Low-Iq Adjustable Precision Shunt Regulator  Voltage Reference  Sample & Buy View Design Kits & Evaluation Modules
CSD19537Q3  100V N-Channel NexFET Power MOSFET  Power MOSFET  Sample & Buy Not Available
LP339  Quad, Low-Power, General Purpose Differential Comparator  Amplifiers  Sample & Buy Not Available
SN74AUP1G14  Low-Power Single Schmitt-Trigger Inverter  Buffer/Driver  Sample & Buy Not Available
SN74AUP1G17  Low-Power Single Schmitt-Trigger Buffer  Buffer/Driver  Sample & Buy Not Available
SN74AUP1G74  Low-Power Single Positive-Edge-Triggered D-Type Flip-Flop  Flip-Flop/Latch/Register  Sample & Buy View Design Kits & Evaluation Modules
SN74AUP2G08  Low-Power Dual 2-Input Positive-AND Gate  Gate  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1468 26 Aug 2016 478
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 642 26 Aug 2016 291
ZIP 15480 26 Aug 2016 35
PDF 1381 26 Aug 2016 92
PDF 188 26 Aug 2016 31
PDF 72 26 Aug 2016 43
PDF 560 26 Aug 2016 407
Related Tools & Software

Reference Designs (3)

Name Part Number Tool Type
Isolated Self-Powered AC Solid State Relay with MOSFETs Reference Design  TIDA-01065  TI Designs
Low BOM Cost AC Solid State Relay with MOSFETs Reference Design  TIDA-01064  TI Designs
Solid State Relay 24V AC Switch with Galvanic Isolation Reference Design  TIDA-00751  TI Designs

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