Post Go back to editing

Output Protection Circuit for AD5755 ?

Hi ,

As mentioned in the datasheet of AD5755 ,

The Transient Voltage protection circuit for Current Output following components are required :-

External power diodes , transient voltage suppressors & surge current limiting resistor , as shown in Figure 84 of Datasheet .

->What are the recommended power ratings and part no. of the above components ?

Also In case of Voltage outputs , the recommended protection circuit must have following components as per Application note CN-6005 :-

A TVS diode , Non-Conductive ceremic ferrite bead , and power diodes.

-> What are the recommanded part no. of the above components ?

Can we use a TVS diode of  Vbr 15V ?

Regards !!

VAV

Parents
  • Hi JerryS,

    Because the selection can very on the application, its difficult to have a recommended part that suits all. What the datasheet does is advise specifications that the user should look out for when selecting D1, D2 and TVS diodes. D1 and D2 should have suitable power ratings and the TVS diode's breakdown voltage should be as low as possible without conducting in the output current range.

    Some examples of diodes that might be suitable are the BAV199 or the BAW101. An example of a TVS is the Littlefuse SMBJ series.

    Kind Regards,

    David

Reply
  • Hi JerryS,

    Because the selection can very on the application, its difficult to have a recommended part that suits all. What the datasheet does is advise specifications that the user should look out for when selecting D1, D2 and TVS diodes. D1 and D2 should have suitable power ratings and the TVS diode's breakdown voltage should be as low as possible without conducting in the output current range.

    Some examples of diodes that might be suitable are the BAV199 or the BAW101. An example of a TVS is the Littlefuse SMBJ series.

    Kind Regards,

    David

Children
No Data