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LT4363 Recommended for New Designs
The LT4363 surge stopper protects loads from high voltage transients. It regulates the output during an overvoltage event, such as load dump in vehicles...
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LT4363 on Analog.com

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LT4363 LTSpice Model shows current pulse from GATE pin to GND pin in IEC 61000-4-5 8/20us 2kV/1kA test



		

			

									
					    antsupov@fastwel.ru
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Dec 10, 2019 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hello,
    

    attached data is an LTSpice model test setup of LT4363-2 based cirquit, exposed to IEC 61000-4-5 8/20us 2kV/1kA pulse.
    

    

     LT4363-2_IEC.zip
    

    

    Simulation data demonstrates a considerable current pulse from GATE pin to GND pin of LT4363 immediately after surge onset, for which no valid path exist as per datasheet block diagram. In 1us a normal pulse starts from GATE pin to SNS pin, evidently due to current fault, which seems to terminate the pulse to GND pin.
    

    Is it an intended behavior?
    

    Regards,
    

    Sergey