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Self-Powered AC Solid State Relay with MOSFETs Reference Design

(ACTIVE) TIDA-00377

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Key Document

Self-Powered AC Solid State Relay With MOSFETs Design Guide (PDF 1468 KB)
26 Aug 2016 49 views

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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

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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TI Devices (7)

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Part Number	Name	Product Family	Sample & Buy	Design Kits & Evaluation Modules
ATL431	2.5V Low-Iq Adjustable Precision Shunt Regulator	Voltage references	Sample & Buy	View Design Kits & Evaluation Modules
CSD19537Q3	100V N-Channel NexFET Power MOSFET	MOSFETs	Sample & Buy	Not Available
LP339	Quad, Low-Power, General Purpose Differential Comparator	Amplifiers	Not Available	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

CAD/CAE symbols

Part #	Package \| Pins	CAD File (.bxl)	STEP Model (.stp)
ATL431	SOT-23 (DBZ) \| 3	Download	Download
CSD19537Q3	VSON-CLIP (DQG)\| 8	Download	Download
LP339	SOIC (D) \| 14	Download	Download
	PDIP (N) \| 14	Download	Download
SN74AUP1G14	DSBGA (YFP) \| 4	Download	-
	SOT-23 (DBV) \| 5	Download	Download
	SOT-SC70 (DCK) \| 5	Download	Download
	X2SON (DPW) \| 5		Download
	SOT-5X3 (DRL) \| 5	Download	Download
	DSBGA (YZP) \| 5	Download	-
	USON (DRY) \| 6	Download	Download
	X2SON (DSF) \| 6	Download	Download
SN74AUP1G17	DSBGA (YFP) \| 4	Download	-
	SOT-23 (DBV) \| 5	Download	Download
	SOT-SC70 (DCK) \| 5	Download	Download
	X2SON (DPW) \| 5		Download
	SOT-5X3 (DRL) \| 5	Download	Download
	DSBGA (YZP) \| 5	Download	-
	USON (DRY) \| 6	Download	Download
	X2SON (DSF) \| 6	Download	Download
SN74AUP1G74	VSSOP (DCU) \| 8	Download	Download
	X2SON (DQE) \| 8	Download	Download
	UQFN (RSE) \| 8	Download	Download
	DSBGA (YFP) \| 8	Download	-
	DSBGA (YZP) \| 8	Download	-
SN74AUP2G08	VSSOP (DCU) \| 8		Download
	X2SON (DQE) \| 8	Download	Download
	UQFN (RSE) \| 8	Download	Download
	DSBGA (YFP) \| 8	Download	-
	DSBGA (YZP) \| 8	Download	-

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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
Self-Powered AC Solid State Relay With MOSFETs Design Guide		PDF	1468	26 Aug 2016	49

Design files (6)

Title	Type	Size (KB)	Date	Views
TIDA-00377 Gerber	ZIP	642	26 Aug 2016	7
TIDA-00377 CAD Files	ZIP	15480	26 Aug 2016	4
TIDA-00377 PCB	PDF	1381	26 Aug 2016	4
TIDA-00377 Assembly Drawing	PDF	188	26 Aug 2016	3
TIDA-00377 BOM	PDF	72	26 Aug 2016	4
TIDA-00377 Schematic and Block Diagram	PDF	560	26 Aug 2016	17

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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Self-Powered AC Solid State Relay with MOSFETs Reference Design