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LTC4287 Recommended for New Designs
The LTC4287 is an integrated solution for hot swap applications that allows a board to be safely inserted and removed from a live backplane. The dual-gate...
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LTC4287 on Analog.com

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BTB FET's instead of single

		
	
				

			

									
					    Romme
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Feb 27, 2026 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
    
		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  LTC4287  
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hallo.
    

      Sorry if this is placed wrong, but i could not find a better place. 
    

      If i use the LTC4287 it has a possibility to gate 2 pairs of FET's, but would it be possible to gate to pairs of Back-2-Back FET's to have reverse protection as well ?
    

      I am gonna use the device to switch between 28V, 13A in put and 56V, 13A input, and for obvious reasons these 2 should NOT see each other.

      If it is possible, what would be the best approach ?

    

    Sincerely
      Klavs Rommedahl.
    
			
    
			
									
		                             
                        

    
    
                                            
                 power management
                
                                                    
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                 LTC4287
                
                                                    
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Mar 12, 2026 10:00 AM
            
            
						
			            		
      
		
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      Hi Klavs,,
      Yes, if you use LTC4287, you can connect the MOSFET back to back to have reverse protection.So, LTC4287 can drive the gate pair together  (same gate signal) to provide reverse protection. 
       
      However, LTC4287 can not manage two inputs that can never see each other because it assumes only one upstream supply.  
       
      Maybe you can use two LTC4287 in parallel and enable one at a time. Or consider using it with Power Path IC,e.g. LTC4359
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
				
				
				
		
		
      
			
		
      
	
      

      

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