What's the function of DC/DC circuit used in BC3?

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cherryic

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Hi folks,

Long time no see, I have been ill for several months, this is the first time I return DGC, I miss you guys so much! I got a DC/DC circuit used in BC3, but I don't know what's its function and what's it used for, can you give me some suggestions?

Best regards,
Terry
 

Re: DC/DC Used In BC3

The figure shown below is the comparator used, the input signal is from the BC3 core, and the negative input to the op-amp is connected to a bias voltage generated by the bandgap in the DC/DC block, VB is also a bias from the bandgap in the DC/DC.
 

DC/DC Used In BC3

Can someone help me?
 

DC/DC Used In BC3

Any ideas?
 

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