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LT8210 Recommended for New Designs
The LT8210 is a 4-switch synchronous buck-boost DC/DC controller that can operate in passthru, forced continuous, pulse-skipping and Burst Mode® operation...
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LT8210 on Analog.com

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±70 V power supply using two LT8210

		
	
				

			

									
					    RalfK272
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Jun 8, 2026 
				
			
			
		

		
		                     
				
        		

		    
		    		    

		      		            		        
Category: Hardware

    		        		            		    
Product Number:  LT8210  

    		        		    		    

		    		    
		    			

			    
Would it be possible to implement a ±70 V power supply using two LT8210s in series, powered by two isolated AC/DC PSUs? Or does Analog Devices offer a more suitable solution? Currents of up to 20 A should be possible, not continuously, but as a short-term peak current. For audio power amplifiers.

			

			
									
		                             
                        

    

                                            
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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Jun 16, 2026 8:05 PM
            
            
						
			            		
    
		
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    To address this directly, yes stacking two LT8210s is a valid approach for 70V. Each IC would only see 70V across so you are staying under 100V abs max.

    That being said, I'd recommend looking at the LT8210‑1 instead. Same family and pinout, but the multiphase config would help you handle 20 A peak current better. 
     
    The closest eval board we have is the EVAL‑LT8210‑1‑AZ. It's a good schematic and compensation reference for your design, but not a drop‑in. 

    Let me know if anything else comes up.
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
				
				
				
		
		
    
			
		
    
	
    

    

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