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How to slow down the output rate of AMC1203

Peter Wong
Prodigy 10 points
Other Parts Discussed in Thread: AMC1203, AMC1204

Hello,

I planned to make use of the PWM signal generated by the Sigma-Delta Modulator AMC1203 in order to drive a H-Bridge with Gate Driver ICs. According to datasheet of AMC1203, the output rate of AMC1203 is 10MHz. However, the response speed of Gate Driver ICs and MOSFETs in H-Bridge are not fast enough for a 10-MHz PWM signal.

So, are there any methods that can slow down the PWM signal, which is produced by AMC1203, to about 200KHz? If it is impossible to do so, are there any Gate Driver ICs and MOSFETs that fast enough to respond the 10-MHz signal?

Thank you for your help.

  • 0
    TI__Guru**** 168805 points

    Hi Peter,

    My apologies for the delay in responding to you.  The AMC1203 has an internal oscillator that generates the MCLK output, there is no way to slow it down.  You might consider using the AMC1204 instead, this device has a similar input to the AMC1203 but allows you to send an external MCLK.  Neither of these devices are meant to directly input signals to a gate driver though, so perhaps you can share a little more about your project with us and we could help you find an appropriate solution.