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Output Protection Circuit for AD5755 ?



		

			

									
					    VAV
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 18, 2011 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
     Hi ,
    
 
     As mentioned in the datasheet of AD5755 ,
    
 
    The Transient Voltage protection circuit for Current Output  following components are required :-
    
 
     External power diodes , transient voltage suppressors & surge current limiting resistor , as shown in Figure 84 of Datasheet .
    
 
    
 
    ->What are the recommended power ratings and part no. of the above components ?
    
 
    Also In case of Voltage outputs , the recommended protection circuit must have following components as per Application note CN-6005 :-
    
 
    A TVS diode , Non-Conductive ceremic ferrite bead , and power diodes.
    
 
    -> What are the recommanded part no. of the above components ?
    
 
    Can we use a TVS diode of  Vbr 15V ?
    
 
    Regards !!
    
 
    VAV
    
 
    
 
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                        
                on Oct 19, 2011 10:07 PM
            
            
					
      
	
      

		
		
      
					
      Hi VAV,
      
 
      The AD5755 datasheet is soon to be updated, the recommendations in the AD5735 datasheet are already up to date and provide more explanation on this external protection. I have also included a copy of these recommendations attached.
      
 
      A ferrite bead could be selected instead of the resistance Rp in figure 83 attached.
      
 
      Regards,
      
 
      Derrick
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Oct 19, 2011 10:07 PM
            
            
					
      
	
      

		
		
      
					
      Hi VAV,
      
 
      The AD5755 datasheet is soon to be updated, the recommendations in the AD5735 datasheet are already up to date and provide more explanation on this external protection. I have also included a copy of these recommendations attached.
      
 
      A ferrite bead could be selected instead of the resistance Rp in figure 83 attached.
      
 
      Regards,
      
 
      Derrick
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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