Standard Digital Isolator with Robust Electromagnetic Compatibility (EMC)

As Factory Automation (FA) progresses, functionality such as inverters/servos and PLCs are often integrated into the same system.
Because of this, there is a risk of noise interference in switching operations such as inverters/servos that control motors. Therefore, the FA market must eliminate the risk of this noise interference as much as possible to operate FA equipment safely and accurately. Toshiba's standard digital isolators are designed to meet the market's demands and contribute to improving customer product reliability by ensuring solid electromagnetic compatibility (EMC*1) that is as noise-free as possible and less susceptible to external noise at the semiconductor level.
(Indicates whether the equipment or system is causing electromagnetic disturbances and whether it is free of electromagnetic interference or works appropriately in the event of such interference.)

Reference: Please refer to the following information on semiconductor EMC and our semiconductor EMC testing laboratory.
Technical Review:  Toshiba EMC testing laboratory receives ISO/IEC 17025 accreditation (701.5KB)

EMI*2: Reference test condition CISPR32*3

A margin of at least 10dB is ensured for Class B (3m) standards, which are more stringent than Class A (3m).

Reference test condition CISPR32 (Horizontal)
Reference test condition CISPR32 (Vertical)
  • A smaller value means less noise is generated.

EMS*2 IEC 62132-8: Reference test conditions*4

BISS*5 800V/m noise of in-vehicle requirement class-III does not cause malfunction.

IEC 62132-8 Reference test conditions
  • The higher the value, the more significant is the interference from outside noise.

 

*1: EMC: Electro Magnetic Compatibility.

*2: EMI/EMS: Electromagnetic Interference / Electromagnetic Susceptibility.

*3: CISPR32: Emission requirements for multimedia equipment.

*4: IEC 62132-8: Semiconductor EMC test standard (radiation immunity: IC Stripline method).

*5: Common specifications for semiconductor EMC testing formulated by BISS: Bosch, Infineon, and Siemens (now Continental).

[Caution] Refer to each specification sheet/specification sheet for the contents of the reference test conditions.

Standard Digital Isolators

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Related information

Standard Digital Isolators

Isolated 4 channel logic supporting 150Mbps data rate
For use in industrial control applications like the isolation of bus lines between ICs using different power supply source in different potential, or the suppression of external noise via a data line, Toshiba standard digital isolators transmit at a data rate over 100Mbps higher than photocouplers can achieve.

Standard Digital Isolators

Over 100kV/μs high Common Mode Transient Immunity (CMTI)
Toshiba standard digital isolators utilize their own unique topology of magnetic coupling and shutout common-mode noise to provide a high CMTI.

Standard Digital Isolators

What is the isolation life of the standard digital isolator "DCL54x01"?
Isolation life of the standard digital isolator can be predicted by applying the same concept as MOSFET gate-oxide breakdown over time (TDDB: Time Dependent Dielectric Breakdown [Note 1]).

Standard Digital Isolators

What is the impulse voltage tolerance of the standard digital isolator "DCL54x01"?
For inverter systems used in industrial applications, indices related to insulation are defined in the International Standard IEC 61800-5-1 "Adjustable speed electrical power drive system – Safety requirements” [Note 1].

Standard Digital Isolators

Pulse Width Distortion (PWD) 3ns (max) corresponds to 150Mbps high-speed communication
Toshiba's standard 4 channel digital isolators improve PWD within 3ns, perform clear eye patterns and offer a maximum data rate corresponding to 150 Mbps what is enabled by high carrier frequency and on-off keying control.

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