ISO8200B datasheet(22/33 Pages) STMICROELECTRONICS

Part #	ISO8200B

Description	Galvanic isolated octal high-side smart power solid state relay

PDF	33 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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22 / 33 page

Functional description

ISO8200B

22/33

Doc ID 023802 Rev 1

6.4

Fault indication

The FAULT pin is an active low open drain output indicating fault conditions. This pin is

activated when at least one of the following conditions occurs:

●

Junction overtemperature of one or more channels (TJ >TTJSD);

●

Communication error.

6.4.1

Junction overtemperature and case overtemperature

The thermal status of the device is updated during each transmission sequence between

the two isolated sides.

In SCM operation, when the LOAD signal is high and the SYNC one is low, the

communication is disabled. In this case the thermal status of the device cannot be updated

and the FAULT indication maybe be different from the current status.

In any case, the thermal protection of the channel outputs are always operative.

Figure 14.

Thermal status update (DCM)

ISO8200B Datasheet(PDF) 22 Page - STMicroelectronics