PLL SSTC

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Original poster: "Rajesh Seenivasan" <rajeshkvs@xxxxxxxxxxx>

Dear forum members,

I believe few members of this forum have used a PLL (4046) to 
'auto-tune' the SSTC. I'm trying to build a similar system. I believe 
due to noise and (or other reasons?), the PLL would go out-of-tune 
and this may (or may not?) result in HARD switching of IGBTs/MOSFETs 
in the switching circuits or sometimes may result in huge currents 
drawn from the switching circuit. So, is there a way to find out if 
the PLL is 'in tune' or not? Has anyone used the 'Phase Comparator 
Pulse Output' (Pin #1) in CD4046BC? Please help.

Thanks and regards,
Rajesh.