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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

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Software

Calculation tool

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

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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Version: 01.00.00.0C
Release date: 05 Dec 2022
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TPSI3050-Q1, TPSI3052-Q1, TPSI3050, TPSI3052 Design Calculator (zip)  — 169 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-state relays May 09, 2022

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