Why is the RSC resistor needed to sample the choke current in the system?

• Why is the RSC resistor needed to sample the choke current in the system?
  Posted by akea on 05 May, 2019 09:12
• Hello guys. Can u pls tell me Why is the Rsc resistor needed to sample the choke current in the system? Thank you
  

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• #1 Reply
  Posted by T3sl4co1l on 05 May, 2019 09:32
• The system?
  
  Tim
• #2 Reply
  Posted by akea on 05 May, 2019 09:47
• in converter
• #3 Reply
  Posted by soldar on 05 May, 2019 09:56
• Quote from: T3sl4co1l on 05 May, 2019 09:32

  The system?

  The code.
• #4 Reply
  Posted by akea on 05 May, 2019 13:30
• Anyone knows Why?
• #5 Reply
  Posted by mikerj on 05 May, 2019 14:07
• No one has any idea what you are talking about, you haven't even described the system you are referring to.
• #6 Reply
  Posted by akea on 05 May, 2019 15:25
• sorry about it. i have just uploaded the system
• #7 Reply
  Posted by mikerj on 05 May, 2019 17:23
• The circuit seem to be incomplete, there is no inductor (choke) shown. 
  
  The device block diagram looks like an MC34063 switching regulator, is that correct?  If so the resistor is used to provide current limiting, if the voltage drop across the resistor is greater than 300mV the duty cycle will be reduced to lower output voltage and hence lower the current.  Without current limiting an accidental short on the output could destroy either the regulator or the load.
• #8 Reply
  Posted by akea on 05 May, 2019 17:51
• Yes its correct.Thank you very much