Isolation

Increase safety with the highest working voltage and reliability

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Why do electronics need isolation?

Isolation is about reliable protection in the presence of dangerous high voltages. Galvanic isolation electrically separates two domains, allowing power or signals to transfer across the barrier without compromising human safety, while also preventing ground potential differences and improving noise immunity. TI’s portfolio of isolation technologies, including a capacitive SiO2 insulation barrier and integrated transformers, help exceed Verband der Automobilindustrie (VDA), Canadian Standards Association (CSA) and Underwriters Laboratory (UL) standards without compromising performance.

Meeting isolation requirements with high-voltage ICs

Isolation requirements vary greatly across industrial and automotive markets. This white paper explores key considerations and approaches for transferring power and signals across an isolation barrier, and examines how requirements differ for grid infrastructure, factory automation, motor drives and automotive applications.

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Benefits of TI's isolation technology

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Improved system robustness and reliability

TI’s portfolio of high-voltage isolated products achieves low latency, excellent common-mode transient immunity and robust performance.

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Improved form factors and simplified EMI compliance

TI’s isolation technologies help achieve best in-class size, thermals and EMI.

How high-voltage isolation technology works

TI’s capacitive isolation technology enables the industry’s highest isolation ratings and longest lifetime reliability. Discover the performance advantages of capacitive isolation from one of our high-voltage technology experts.

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Featured isolation products

NEW Isolated DC/DC converters & modules UCC14240-Q1 PREVIEW Automotive, 1.5-W, 24V-Vin, regulated, 3-kVRMS isolated DC-DC module with integrated transformer
NEW Signal isolators with integrated power ISOW7741 ACTIVE Low-emissions, low-ripple, quad-channel, 3/1, reinforced digital isolator with integrated power
Isolated gate drivers UCC5870-Q1 ACTIVE Automotive, 3.75kVrms 30A single-channel functional safety isolated gate driver for IGBT/SiC

Featured reference designs for isolation

Reference design
ADC-based, digitally-isolated, wide-input, 16-channel, AC/DC binary input reference design

This reference design showcases a cost-optimized and scalable ADC-based AC/DC binary input module (BIM) architecture with reinforced isolation. The 16 channels of a 10- or 12-bit SAR ADC are used for sensing multiple binary inputs. The op amps, in addition to keeping the cost per-channel low, (...)

Reference design
Size and Cost Optimized Binary Module Reference Design Using Digital Isolator with Integrated Power
This reference design showcases space- and cost-optimized architecture for a 4-channel DC-input binary module with improved measurement accuracy and status indication using only two products simplifying system design. MCU-based binary module improves measurement resolution of binary input (...)
Reference design
ASIL D safety concept-assessed high-speed traction, bi-directional DC/DC conversion reference design

This reference design demonstrates control of HEV/EV traction inverter and bi-directional DC-DC converter by a single TMS320F28388D real-time C2000™ MCU. The traction control uses a software-based resolver to digital converter (RDC) driving the motor to a high speed up to 20,000 RPM. The (...)

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