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LT8301 Recommended for New Designs
The LT8301 is a micropower isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part...
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LT8301 on Analog.com

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Paralleling LT8301 converters

		            
		

			

									
					    jfghk
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jun 13, 2025 
				
			
			
		
    
		
     
				
		
    
		    		    
		    
		    		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  LT8301  
    
    		        		    		    	
			
    Hi, I am planning on using LT8301 for a flyback converter (12V to 5V, and another 12V to 3V3). I need 400mA but my transformer only withstands 200mA. Can I connect two LT8301 in parallel to obtain more current (as seen in picture)? What would be the drawbacks and what should I consider when doing this?
    

     
    
									
			        
		
    

				
						
        

    
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jun 13, 2025 11:26 AM
            
                                    
					
      
	
      

		
		
      
					
      Hi  ,
      

      I don't know much about this controller, but the biggest consideration with paralleling is getting the load sharing to balance or you will just end up overcurrenting one of your transformers anyway, so you need some current control loop, not available in this part. You could follow the two converters with a load sharing controller, such as the LTC4370 (which might be overkill in your app, check out the articles on the landing page), or use a the MAX15159 as your controller. Sorry can't give you more.
      

      mike (LTspice team)
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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