Not applicable
Feb 09, 2016
07:48 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Feb 09, 2016
07:48 AM
In my previous thread i understood the explanation of bsp752r which I am using in my project. My question is generally we enable the bsp752r by giving the input from the micro and read the status back to the micro. Suppose if an actual short to ground happens and I understand using the status pin. What will be my next step should I stop giving the input to the bsp752r immediately that is disable itor I can still give input to the ic. How should I know that short to ground removed? Please advise.
Solved! Go to Solution.
Labels
- Labels:
-
ispn:919:1:0
-
l1:144:1:0
-
l2:268:1:0
-
l3:273:1:0
- Tags:
- IFX
1 Solution
Sep 22, 2016
08:40 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Sep 22, 2016
08:40 AM
In case you have detected that failure (e.g. short of output to ground) by reading the status output you should turn off the output.
Using a microcontroller's timer you can periodically check the status again. According to the logic truth table on page 7 of the datasheet you will have to set the input to H to activate the output and check the status if it is still L showing that the short is still there. I suggest to choose a period in the range of a minute to some minutes, If you can do it with your micro.
After some checks you can give up and disable the output forever. There should be a LED signalling the fault, so that someone can solve the problem. With every power cycle you should check the status after the power up sequence is finished according to the truth table.
Using a microcontroller's timer you can periodically check the status again. According to the logic truth table on page 7 of the datasheet you will have to set the input to H to activate the output and check the status if it is still L showing that the short is still there. I suggest to choose a period in the range of a minute to some minutes, If you can do it with your micro.
After some checks you can give up and disable the output forever. There should be a LED signalling the fault, so that someone can solve the problem. With every power cycle you should check the status after the power up sequence is finished according to the truth table.
12 Replies
Not applicable
Feb 11, 2016
07:42 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Feb 11, 2016
07:42 AM
Any suggestions please?
Not applicable
Sep 20, 2016
12:22 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Sep 20, 2016
12:22 AM
wish someone had answered this, facing the same issue
Not applicable
Sep 21, 2016
01:57 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Sep 21, 2016
01:57 PM
its a complicated matter I think.. so now I'm curious about it. waiting for suggestions
Sep 22, 2016
08:40 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Sep 22, 2016
08:40 AM
In case you have detected that failure (e.g. short of output to ground) by reading the status output you should turn off the output.
Using a microcontroller's timer you can periodically check the status again. According to the logic truth table on page 7 of the datasheet you will have to set the input to H to activate the output and check the status if it is still L showing that the short is still there. I suggest to choose a period in the range of a minute to some minutes, If you can do it with your micro.
After some checks you can give up and disable the output forever. There should be a LED signalling the fault, so that someone can solve the problem. With every power cycle you should check the status after the power up sequence is finished according to the truth table.
Using a microcontroller's timer you can periodically check the status again. According to the logic truth table on page 7 of the datasheet you will have to set the input to H to activate the output and check the status if it is still L showing that the short is still there. I suggest to choose a period in the range of a minute to some minutes, If you can do it with your micro.
After some checks you can give up and disable the output forever. There should be a LED signalling the fault, so that someone can solve the problem. With every power cycle you should check the status after the power up sequence is finished according to the truth table.
Not applicable
Sep 23, 2016
09:56 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Sep 23, 2016
09:56 AM
forix wrote:
In case you have detected that failure (e.g. short of output to ground) by reading the status output you should turn off the output.
Using a microcontroller's timer you can periodically check the status again. According to the logic truth table on page 7 of the datasheet you will have to set the input to H to activate the output and check the status if it is still L showing that the short is still there. I suggest to choose a period in the range of a minute to some minutes, If you can do it with your micro.
After some checks you can give up and disable the output forever. There should be a LED signalling the fault, so that someone can solve the problem. With every power cycle you should check the status after the power up sequence is finished according to the truth table.
Nice dear! was looking who can solve this
Not applicable
Sep 27, 2016
12:58 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Sep 27, 2016
12:58 PM
forix wrote:
In case you have detected that failure (e.g. short of output to ground) by reading the status output you should turn off the output.
Using a microcontroller's timer you can periodically check the status again. According to the logic truth table on page 7 of the datasheet you will have to set the input to H to activate the output and check the status if it is still L showing that the short is still there. I suggest to choose a period in the range of a minute to some minutes, If you can do it with your micro.
After some checks you can give up and disable the output forever. There should be a LED signalling the fault, so that someone can solve the problem. With every power cycle you should check the status after the power up sequence is finished according to the truth table.
is it not effective on the results if turn off the output?
Not applicable
Oct 14, 2016
01:08 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Oct 14, 2016
01:08 AM
Unfortunately, eleclearner also encountered similar problems but can not find a solution.
Not applicable
Oct 15, 2016
05:42 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Oct 15, 2016
05:42 PM
ohh. its still unsolved..
Jul 26, 2021
12:51 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Jul 26, 2021
12:51 PM
Hi all,
According to the datasheet of BSP752R, when facing a short current condition the chip enters in a cyclic ON/OFF state due to the hysteresis of the overtemperature protection. Can the device work in this mode withoug getting damaged for a long period of time?
Thank you in advice
According to the datasheet of BSP752R, when facing a short current condition the chip enters in a cyclic ON/OFF state due to the hysteresis of the overtemperature protection. Can the device work in this mode withoug getting damaged for a long period of time?
Thank you in advice
Jul 27, 2021
12:40 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Jul 27, 2021
12:40 AM
There is a note in the data sheet saying: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as "outside" normal operating range. Protection functions are not designed for continuous repetitive operation.
Jul 27, 2021
01:24 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Jul 27, 2021
01:24 AM
I am aware of the note, thank you. But what response time would be needed to send a low logic signal to the input, so the device turns off, before getting damaged when facing a completely short current between the output and GND? Can it be a matter of seconds?
Jul 28, 2021
01:24 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Jul 28, 2021
01:24 AM
To avoid any degration, the controller should react as soon as posible after detection of the "low" state of the ST (which is <500us or 0µs) at BSP752R or after detection from other additional designed protection circuitry.