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LT8304 Recommended for New Designs
The LT8304/LT8304-1 are monolithic micropower isolated flyback converters. By sampling the isolated output voltage directly from the primary-side flyback...
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LT8304 on Analog.com

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LT8304, demo board



		

			

									
					    MarWie
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jul 14, 2022 
				
			
			
		
    

				
		
    
		    		    
		    
		    		            		        
    Category: Software
    
    		        		            		    
    Product Number:  LT8304 
    
    		        		    		    	
			
    Hi Guys,
    

    for my Bachelorthesis I had to edit a flyback converter application and used the LT8304 for control. My example was a demo board with the following circuit:
    

     
    

    I had different output values, but I got my board working! I just have three questions for my documentation:
    

      

    1. What is the capacitor 'C9' supposed to do and how it was dimensioned?
      2. 

    2. How the values for the Snubber (R3 and C4) were dimensioned?
      3. 

    3. How do the resistors 'R4' and 'R6' affect the output voltage? This problem I tried to solve by studying the Block disgram in the LT8304-datasheet, but I can't understand how it works.
      4. 

    

    Maybe some of you could help me with those questions. I would be very grateful!
    

    Greetings,
    

    Mario