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ADP2138 Production
The ADP2138 and ADP2139 are high efficiency, low quiescent current, synchronous step-down dc-to-dc converters. The ADP2139 has the additional feature of...
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ADP2138 on Analog.com

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ADP2138 fails permanently when enable toggles quickly

		
	
				

			

									
					    ca2012
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Dec 15, 2012 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
    In our design the ADP2138 fails permanently when enable toggles quickly.
    
 
    Has anyone seen this behavior?
    
 
    Is there an errata for this part?
    
			
    
			
									
		                             
                        

    
    
                                            
                 Internal Power Switch Buck Regulators
                
                                                    
                 ADP2138
                
                                                    
                 Step-Down (Buck) Regulators
                
                                
            
    
    
    
		
    

				
				        
        		
    
			
						
									
												
			
			
                        
                                    
                        
                                                    
                        
            
			            
						
						
			
			
			
			
		
    

        
        
        
    
					
    
			
    


    
















    
	
    
	
    
					



			


				
	









	
      
	

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							FormerMember
					
      
		
      
		    
		    		    
			
				
									FormerMember
							        
			
			
			
    
            
						
                            
            
            				
            
                on Dec 15, 2012 2:32 AM
            
            
						
			            		
    
		
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    Ca2012,
    
 
    Can you share your schematics and some scope plots of the EN signal toggling as well as Vout, vin and SW waveforms?
    
 
    What failure mode do you see?
    
 
    Thanks.
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
				
				
				
		
		
    
			
		
    
	
    

    


	

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							FormerMember
					
    
		
    
		    
		    		    
			
				
									FormerMember
							        
			
			
			
            
						
                            
            
            				
            
                on Jan 9, 2013 1:47 AM
            
            
						
			            		
    
		
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    Since you did not return to this posting I am assuming the issue was resolved. 
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
				
				
				
		
		
    
			
		
    
	
    

    

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                on Aug 2, 2018 12:44 PM
            
            
						
			            		
      
		
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      This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

      Thank you,
      EZ Admin
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
				
				
				
		
		
      
			
		
      
	
      

      

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