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TIDA-050059

Overcurrent and overtemperature protection for solid-state relays reference design

Design files

TIDA-050059

Design files

Overview

This reference design shows how to achieve overcurrent and overtemperature protection for a solid-state relay. The reference design features the TPSI3050-Q1 5-kVRMS reinforced 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 power to external circuitry located on the high voltage (HV) side. This reference design can support up to 500-VDC or 350-VAC switching with a max of 4-A loading conditions.

Features
  • No isolated secondary supply required
  • 3-kVRMS reinforced isolation
  • 500-VDC/350-VRMS load with 4-A max
  • Two-level overcurrent protection
    • >2-A 100-ms load disconnect delay
    • >5-A immediate load disconnect
  • Two-level overtemperature protection
    • >60°C LED visual warning
    • >90°C immediate load disconnect
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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.

download Design guide — TIDA-050059
PDF | HTML
TIDUC65.PDF (1268 K)

Reference design overview and verified performance test data

download Schematic — TIDA-050059
TIDMAF7.PDF (364 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIDA-050059
TIDMAF8.PDF (156 K)

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

download Assembly drawing — TIDA-050059
TIDMAF9.PDF (263 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — TIDA-050059
TIDMAG1.ZIP (1646 K)

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

download Gerber file — TIDA-050059
TIDCG70.ZIP (12084 K)

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

download PCB layout — TIDA-050059
TIDMAG0.PDF (1112 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
AND gates

SN74HCS09 — 4-ch 2-input 2-V to 6-V AND gate with open-drain outputs and Schmitt-trigger inputs

Data sheet: PDF
Digital isolators

ISO7310-Q1 — Automotive, low-power, single-channel, 25-Mbps digital isolator

Data sheet: PDF | HTML
Isolated comparators

AMC23C14 — Dual, fast-response, reinforced, isolated window comparator with adjustable threshold

Data sheet: PDF | HTML
Temperature switches

TMP392 — TMP392 Dual-channel (hot & warm), resistor-programmable temperature switch

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

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

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Latest version
Version: 01.00.00.0D
Release date: 25 Mar 2024
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TPSI305x_calculator_1p24.xlsx  — 189 K

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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 Overcurrent and Overtemperature Protection for Solid-State Relays Ref 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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