Products Mentioned

ADUM4137 Recommended for New Designs
The ADuM41371 is a single-channel gate driver specifically optimized for driving insulated gate bipolar transistors (IGBTs). Analog Devices, Inc., iCoupler...
Datasheet
ADUM4137 on Analog.com

ADuM4138 Recommended for New Designs
The ADuM4138 is a single-channel gate driver optimized for driving insulated gate bipolar transistors (IGBTs). Analog Devices, Inc., iCoupler® technology...
Datasheet
ADuM4138 on Analog.com

Thread Details

  • State Verified Answer
  • +1 person also asked this people also asked this
  • Replies 4 replies
  • Subscribers 33 subscribers
  • Views 1995 views
  • Users 0 members are here
Options 

        

            Post
             Go back to editing
        

    

    


    

    









		


















	
	
			
	
			
		
	
	
		

	    
	    
	    		
(ADuM4138/ADuM4137)Differences between the ADuM4137 and ADuM4138

		
	
				

			

									
					    donadona999s
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on May 12, 2020 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user asked about the differences between the ADuM4137 and ADuM4138, particularly regarding fault detection. The ADuM4137 lacks a flyback controller, has multiple fault reporting pins, no PGOOD pin, and removed DESAT protection in favor of an ASC pin. SPI communication in the ADuM4137 requires UVLO_nFault to be driven low. The user also confirmed that using the ADuM4138 on the high side and ADuM4137 on the low side in a daisy chain configuration is possible.
                        	    
    
                
                     AI Generated Content
                
    	    
    
             
				
        		
    
		    
		    		    
		    			
    
			    
    Hi!
    

    I would like to see the differences between the ADuM4137 and ADuM4138, but I am still reading the datasheet.
    

    Are there any major feature differences besides having a flyback controller?
    For example, the fault detection function is different.
    If there are other major differences, please let me know.
    

    Best regards
    

    Kawa
    
			
    
			
									
		                             
                        

    
    
                                            
                 Digital Isolation Technology
                
                                                    
                 Isolated Gate Drivers
                
                                                    
                 ADuM4137
                
                                                    
                 Isolation gate driver
                
                                                    
                 interface
                
                                        
                                            
                
                
                                
                    Show More
            
    
    
    
		
    

				
				        
        		
    
			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		
    

        
        
        
    
					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



Parents
	
      
	

    • 
	
      



	
			
		
	



      
	
      
		
      
							
					
      
		
      
		    
		    		    
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
						
                            
            
            				
            
                on May 18, 2020 10:55 AM
            
            
						
			            		
      
		
										+1
					
	
      

		
		
      
		
      
                                
                                                            
      
					
      Hello Kawa,
      

      

      The ADuM4137 and ADuM4138 are both from the same model family, so they do indeed have many similarities. The major feature differences of the ADuM4137 are:
      

      1) No Flyback Controller
      

      2) Multiple fault reporting pins to help differentiate faults
      

      3) No PGOOD pin
      

      4) DESAT protection was removed to allow for ASC pin. The ASC pin allows the output to be driven high by a command on the secondary side.
      

      5) SPI communication requires UVLO_nFault to be driven low before communication begins. This is to increase the functional safety of the SPI by requiring two external signals to begin a transmission.
      

      

      RSchnell
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

      • 

	

    • 
	
      



	
		
	
	



      
	
      
		
      
							
					
      
		
      
		    
		    		    
			
				
									
							        
			
			
			
        
            
						
                            
            
            				
            
                on May 18, 2020 6:48 PM
            
            
												
						in reply to RSchnell
					
										
			            		
        
		
										0
					
	
        

		
		
        
		
        
                                
                                                            
        
					
        Hi RSchnell
        

        

        Thank you for your reply.
        

        I understood.
        

        Can we use ADuM4138 at the High side and ADuM4137 at Low side and use daisy chain?
        

        

        Best regards
        

        Kawa
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

        • 

	
      



Reply



Children