Looking for a ClassD amplifier for transformer application

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Looking for a ClassD amplifier for transformer application

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mdmubdiulhasan
Contributor III
My intention is to make an 3-phase power calibrator !

Similar to this link, https://us.flukecal.com/products/ele...wer-calibrator

My current design might be class AB type. 


I am not worried to much about PWM generation ruther I am thinking how can I move class AB to Class D amplification.


A lot of the design effort relates to maintaining linearity and avoiding crossover distortion.


2  amplifiers( current, voltage)  output will feed to CT and PT! 

REQUIRMENTS :


1. The amp input  should be  plus and minus 7volt AC, 45-65Hz( 1 Hz has been converted to 1024)

2. Amp operating voltage should be more or less 24v.


3. 2 channel signal (not sure PWM) should be use , one for current, one for voltage.


4. Can run current transformer(input 16.5 V/1.5 A)  and potential Transformer (input15v/2A). PT output may be 15VAC.

5. If possible both voltage and current amplification is required in one IC.

6. Both positive and negative half signal should be amplify. 

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4 Replies

1,472 Views
guoweisun
NXP TechSupport
NXP TechSupport

HI

Unfortunately we don't have suitable devices for recommend,if any questions please let us know!

1,472 Views
mdmubdiulhasan
Contributor III

HI

Unfortunately we don't have suitable devices for recommend,if any questions please let us know!

Could you have anything for  short circuit protection in/out of transformer as I have mentioned ?

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1,472 Views
guoweisun
NXP TechSupport
NXP TechSupport

Sorry that for the protection discrete components which had already transferred to NEXPERIA.

You can contact with them!

1,472 Views
mdmubdiulhasan
Contributor III

From your experience kindly suggest a way to get a solution then.

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