TIDA-050058

Zero-cross switching for solid-state relays reference design

TIDA-050058

Design files

Overview

This reference design shows how to achieve zero-cross switching (ZCS) with a solid-state relay. The reference design features the TPSI3050-Q1 isolated switch driver. TPSI3050-Q1 device integrates a laminate transformer to achieve isolation while transferring signal and power to the secondary side. This removes the need for any isolated bias supply. In addition, the TPSI3050-Q1 device can supply auxiliary current (I_AUX) to external circuitry located on the high voltage (HV) side. ZCS is done while maintaining signal isolation between the low voltage (LV) and HV side. This reference designed achieved a 12-V, 200-µs delay ZCS with a 110-V_RMS, 60-Hz AC source.

Features

No isolated secondary supply required
5-kV_RMS reinforced isolation
500-V_DC/350-V_RMS load with 4-A max
Zero-voltage switching (ZVS)
Solid-state relay (SSR) solution
Less than 4-µs immediate load disconnect

Industrial

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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

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Design guide — TIDA-050058

PDF | HTML

TIDUCF7.PDF (1171 K)

Reference design overview and verified performance test data

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Schematic — TIDA-050058

TIDMAF2.PDF (289 K)

Detailed schematic diagram for design layout and components

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Bill of materials (BOM) — TIDA-050058

TIDMAF3.PDF (155 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

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Assembly drawing — TIDA-050058

TIDMAF4.PDF (208 K)

Detailed overview of design layout for component placement

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CAD/CAE symbol — TIDA-050058

TIDMAF6.ZIP (1268 K)

Files used for 3D models or 2D drawings of IC components

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Gerber file — TIDA-050058

TIDCG69.ZIP (2875 K)

Design file that contains information on physical board layer of design PCB

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PCB layout — TIDA-050058

TIDMAF5.PDF (729 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Solid-state relays

TPSI3050 — Isolated switch driver with integrated 10-V gate supply

Data sheet: PDF | HTML

Solid-state relays

TPSI3050-Q1 — Automotive reinforced isolated switch driver with integrated 10-V gate supply

Data sheet: PDF | HTML

Solid-state relays

TPSI3052 — Isolated switch driver with integrated 15-V gate supply

Data sheet: PDF | HTML

Solid-state relays

TPSI3052-Q1 — Automotive reinforced isolated switch driver with integrated 15-V gate supply

Data sheet: PDF | HTML

Analog switches & muxes

TMUX1219 — 5-V, 2:1 (SPDT), 1-channel general-purpose analog switch with 1.8-V input logic

Data sheet: PDF | HTML

D-type flip-flops

SN74HCS72-Q1 — Automotive Schmitt-trigger input dual D-type negative-edge-triggered flip-flops w/ clear and preset

Data sheet: PDF | HTML

Isolated comparators

AMC23C10 — Fast-response, reinforced, isolated differential comparator with open-drain and push-pull outputs

Data sheet: PDF | HTML

Start development

Software

Calculation tool

SLVRBI9 — TPSI3050-Q1, TPSI3052-Q1, TPSI3050, TPSI3052 Design Calculator

This calculator may be used to estimate the power transfer and associated startup time and maximum switching frequency possible of the TPSI305x family of devices given various user inputs.

Supported products & hardware

Products

Solid-state relays

TPSI3050 — Isolated switch driver with integrated 10-V gate supply

TPSI3050-Q1 — Automotive reinforced isolated switch driver with integrated 10-V gate supply

TPSI3052 — Isolated switch driver with integrated 15-V gate supply

TPSI3052-Q1 — Automotive reinforced isolated switch driver with integrated 15-V gate supply

Download

SLVRBI9 — TPSI3050-Q1, TPSI3052-Q1, TPSI3050, TPSI3052 Design Calculator

Latest version

Version: 01.00.00.0D

Release date: 25 Mar 2024

open-in-new

View all versions

download

TPSI305x_calculator_1p24.xlsx — 189 K

Checksum

Products

Solid-state relays

TPSI3050 — Isolated switch driver with integrated 10-V gate supply

TPSI3050-Q1 — Automotive reinforced isolated switch driver with integrated 10-V gate supply

TPSI3052 — Isolated switch driver with integrated 15-V gate supply

TPSI3052-Q1 — Automotive reinforced isolated switch driver with integrated 15-V gate supply

Technical documentation

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	Type	Title		Date
*	Design guide	Zero-Cross Switching for Solid-State Relays Reference Design	PDF \| HTML	May 04, 2022
	Technical article	How to achieve higher-reliability isolation and a smaller solution size with solid	PDF \| HTML	May 09, 2022

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