Thursday, 28 June 2018

buck - Regulator design for negative voltage O/P


In my application, I am generating 7.5V from TPS5430 (Buck) regulator and to generate -5V, I am assigning inductor's one leg to input of 7905 for -5V o/p.


Circuit is shown. U14 is TPS5430 and U15 is 7905.


Is this a correct implementation to get -5V from pulsating DC?


I have seen this arrangement somewhere in design and trying to apply in my circuit.



enter image description here




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