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DC-DC converter for input 550 V, adjustable output 250-300V 35 A

Post time:  2009-07-14
 

Author:1247582787491

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Hallo everyone,

Could you please recommend me the suitable converter
topology for such specifications? Any response will
be appreciated.
 
Thank you
 
Nisai
 
 
 
 
 
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Reply:DC-DC converter for input 550 V, adjustable output 250-300V 35 A

Post time:  2009-08-05
 

Author:Ram Anant

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300V @ 35 A is 10,500W or 10.5KW. Considering the converter efficiency of 90%, input Power would be 10.5KW/0.9 = 11.67 KW. At 550V, it would be 21.2 Amps. In order to maximize the efficiency, you can use Phase Shifted Full Bridge Resonant Converter. Using a potentiometer as the lower resistor in the output voltage divider, you can vary the output voltage from 250 to 300VDC. Ensure that there is minimum resistance in series with the potentiometer in the lower leg of the resistor divider. Please let me know if I can be any further assistance in the design of the power converter. Ram
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Reply: DC-DC converter for input 550 V, adjustable output 250-300V 35 A Post time:  2010-01-18
 

Author:Joller

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The LTC3535 dual-channel, 1-MHz, current-mode synchronous boost dc-dc converter from Linear Technology delivers output voltages as high as 5.25 V from an input voltage range of 0.7
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