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Higher common-mode transient immunity (CMTI)

In order to ensure stable operation even when a large dV/dt is applied between the input and output of the photocoupler when the IPM is switched, the photo IC chip has a shield.
The highest class guarantees ±30 kV/μs (minimum) common mode transient immunity and is suitable for IPM control signal interfaces.

TLP2745 terminal layout drawing
TLP2745 terminal layout drawing
Common mode transient immunity  measurement circuit
Common mode transient immunity measurement circuit
Examples of common-mode transient resistance measurements (@dV/dt = 60 kV/μs)
Examples of common-mode transient resistance measurements (@dV/dt = 60 kV/μs)

TLP2745 has a Faraday shield at the photo IC chip and has a high-common-mode transient resistance of ±30 kV/μs (minimum).

High CMTI Photocouplers for IPM Interface

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