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LM5170-Q1: LM5170-Q1 Soft Start Function

BEN Chu
Prodigy 20 points
Part Number: LM5170-Q1
Other Parts Discussed in Thread: LM5170

Hi Team,

I need to use MCU control Soft Start  by ISET Pin ,

How do I choose the suitable capacitor for SS pin?

Best regards. 


								


				
				

				
			

		

			
						
									
                			    			                        
						
						
			
			
						
			                        
			
			
				
			  
			

			     
			

		


				    			

						
















	

	

					
    
	
    





		
	
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                          TI__Guru
                        68675 points
                      
    
                          
                   		
		
    
					
    Hi Ben,
    

    

    Thank you for considering the LM5170.  Since you are using the ISET pin to control the SS, then you need to minimize the SS pin control.  I would recommend to place a 100pF across the SS and GND.
    

    

    Thanks
    

    Youhao Xi, Applications Engineering
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    

	            
                 	
	
    
				
		                
                
                
                
                
                
                
        		
		
				
    
			
		
    
		
		 
		
		
     
    
	
    

    
			
    
			
    
		
    

		
    
	
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