TLV9032: Simulation works for TLV3201, as soon as i replace it with TLV9032 model, It doesn't execute

Mohammed Khan

Part Number: TLV9032
Other Parts Discussed in Thread: TLV3201, TLV9022

To give you a brief,

The Aim of the activity is to Add zero crossing detection to the current circuit. The Circuit shown in above figure shows output of a CT connected to Amp for current measurement. The output of which is fed to controller. This circuit is already present in the current version of the board. Nevertheless, the activity is to detect zero crossing from the Output (Vout signal)

I have also attached simulation file (Current_zero_crossing) which includes TLV3201.

Please guide.

Current_zero_crossing.TSC 4431.tlv9022_current_detection.TSC

over 1 year ago

0 Chi Nguyen1 over 1 year ago

TI__Genius 11601 points

Hi Mohammed,

I multiplied R7 and C1 by a factor of 5 and it was able to sim and work properly. I believe some of our newer models have issues with the current for the feedback cap so you need to increase the R7 to limit the current. In my opinion, when it comes to AC hysteresis, you might want to test this on the bench or on an actual board to see if the desired effect is what you want.

. 7701.tlv9022_current_detection.TSC

0 Mohammed Khan over 1 year ago in reply to Chi Nguyen1

Intellectual 320 points

Thanks for the suggestion. I would request if you can please give me some theory on ac hysteresis and circuit operation of zero crossing, so that its easier to understand and perform on bench

0 Chi Nguyen1 over 1 year ago in reply to Mohammed Khan

TI__Genius 11601 points

Sure thing Mohammed. I will reach out to you offline. Closing this post.

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TLV9032: Simulation works for TLV3201, as soon as i replace it with TLV9032 model, It doesn't execute