DRV8703-Q1: /FAULT Glitch at /SLEEP LOW<=>HIGH

hideyuki sakai

Part Number: DRV8703-Q1

Dear, Sir.

My customer is evaluating DRV8703-Q1. During that, They are facing following

symptom on /SLEEP & /FAULT.

/FAULT Glitch(LOW) during aprox. several 100us ~ 1ms can be observed at

/SLEEP LOW<=>HIGH.

1. Is it a normal behavior which DRV8703-Q1 has?

2. If it was normal, Is it possible to define maximum duration of /FAULT=LOW?

Considering the solution such as doublle reading by MCU, the duration would

be significant. Please give your advice.

Best Regards,

H. Sakai

0 hideyuki sakai over 6 years ago

Dear, Sir.

The customer tried to remove 1uF capacitor on DVDD, the glitch on /FAULT

under /SLEEP HIGH => LOW is disappeared, but still remaining under

/SLEEP LOW => HIGH.

It is the additional information about this issue.

Please give your advice.

Best Regards,

H. Sakai

0 Wang5577 over 6 years ago

Sakai-San,

1. It is a normal behave of DRV8702/3.
2. The maximum time of that glitch should be less than 2ms.

0 hideyuki sakai over 6 years ago in reply to Wang5577

Dear, Wang-san.

Thank you so much for your information.

I understood it is the normal behavior.

I am expecting to describe on the datasheet or additional application note.

Best Regards,

H. Sakai

0 Wang5577 over 6 years ago in reply to hideyuki sakai

Sakai,

You are right. We added this to our datasheet update list.

Thank you for your feedback.

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