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LT3759 Production
The LT3759 is a wide input range, current mode, DC/DC controller which is capable of regulating either positive or negative output voltages from a single...
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LT3759 on Analog.com

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LT3759 Excel Design Tool only calculates BOOST values no SEPIC specific calculation



		

			

									
					    HWeng108
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 8, 2021 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hello. Using ADI's LTpowerCAD II V2.7.2 I downloaded the Excel design tool for the LT3759 (see attached). The device is intended for both SEPIC and Boost converters however the design tool appears only to calculate values specific to a Boost converter. Do you have a tool for the LT3759 to calculate SEPIC values, specifically the coupled parallel inductor and recommended SEPIC capacitor value. I understand that the calculations are available in the datasheet however the excel tool is quick to calculate all the relevant values for various possible input conditions and output voltage and power requirements.
    

    

    Thank You
    

    LeslieXLS 
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                        
                on Nov 4, 2021 6:11 AM
            
            
					
      
	
      

		
		
      
					
      Hi Leslie,
      

      Sorry for late reply. Unfortunately, the SEPIC excel tool is only available for ADI internal use. Do you have NDA with ADI so I can send you copy separately? If none, either you connect to local ADI FAE to help you with computation or you can send me SEPIC operating requirement so I can run the excel for you.
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
				
						
				
				
		
		
      
			
		
      
	
      

      

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                on Dec 1, 2021 5:01 AM
            
            
												
						in reply to Fil
					
									
        
	
        

		
		
        
					
        Hi,  I'm having a similar problem trying to use LT powerCAD to evaluate an existing Sepic coupled L design using the LT3757. When I load  LT powerCad  I can see an LT3757(Sepic Coupled L) Excel Design tool in a row in the search.  How can I setup an NDA to get the Sepic design tool spreadsheet?
        
			
        

		
		
		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
				
				
						
				
				
		
		
        
			
		
        
	
        

        

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        •  Analog Employees  
        
            
			                            
                        
                on Dec 22, 2021 11:35 AM
            
            
												
						in reply to broehrich
					
									
        
	
        

		
		
        
					
        Please connect to local ADI sales personnel.
        

         
        
			
        

		
		
		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
				
				
						
				
				
		
		
        
			
		
        
	
        

        

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