SLYY204C January 2021 – February 2024 AMC1300 , AMC1302 , AMC1302-Q1 , AMC1305M25-Q1 , AMC1311 , AMC1311-Q1 , AMC131M03-Q1 , AMC1336 , AMC1336-Q1 , AMC1350 , AMC1411 , AMC3301 , AMC3301-Q1 , AMC3330 , AMC3330-Q1 , AMC3336 , AMC3336-Q1 , ISOW1044 , ISOW1412 , ISOW7741 , ISOW7840 , ISOW7841 , ISOW7841A-Q1 , ISOW7842 , ISOW7843 , ISOW7844 , UCC12040 , UCC12041-Q1 , UCC12050 , UCC12051-Q1 , UCC14130-Q1 , UCC14131-Q1 , UCC14140-Q1 , UCC14141-Q1 , UCC14240-Q1 , UCC14241-Q1 , UCC14340-Q1 , UCC14341-Q1 , UCC15240-Q1 , UCC15241-Q1 , UCC21222-Q1 , UCC21530-Q1 , UCC21540 , UCC21710-Q1 , UCC21750-Q1 , UCC23513 , UCC25800-Q1 , UCC5870-Q1
The first priority in any high-voltage power system is to protect maintenance personnel and end-equipment users. Galvanic isolation satisfies this priority by isolating the high voltage from other low-voltage human interface sections.
The second priority is to establish reliable and safe operation between high- and low-voltage circuits, such as voltage and current sensing, power-supply control, digital communication and signal processing. Reliable isolation techniques, materials and ICs allow designers to satisfy this priority.
Krunal Maniar
Product Marketing Engineer
Data Converters
Steven Mappus
Systems Application Engineer
High-Voltage Controllers
Tim Merkin
Senior Member Technical Staff
Kilby Labs
Alex Triano
Product Marketing and Applications Manager
Solid-State Relays
Luke Trowbridge
Product Marketing Enginee
rIsolation
This paper provides an overview of galvanic isolation, explains common isolation methods for high-voltage systems, and shows how Texas Instruments (TI) isolation integrated circuits (ICs) can help designers meet isolation needs reliably while reducing solution size and cost.
1 What is galvanic isolation? | Galvanic isolation introduces electrical partitions that prevent current from flowing between
two or more parts of a system. Isolating signals and power protects
personnel and equipment and adheres to industry and international
standards. |
2 High-voltage galvanic isolation concerns | and methods Learn the primary considerations when constructing an isolation barrier, such as voltage
ratings, spacing dimensions, common-mode transient immunity (CMTI) and
electromagnetic interference (EMI). |
3 Achieve isolation needs reliably while reducing solution size and cost | Advancements in capacitive and magnetic isolation, package development, and process technology
from TI can deliver power and high-speed signals safely and reliably across
the isolation barrier in industrial and automotive systems such as electric
vehicles (EVs), grid infrastructure, factory automation and motor
drives. |