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Dual output buck boost

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declan2693

Joined Feb 2, 2018
37
Hi,

I have done a new schematic of dual output buck boost.

I am trying out get a dual output of 5V on each output
Input 4.2 so I want to boost it.

Freq: 1.5Mhz

For switch 1 and 2. Duty cycle is 0.54 (NMOS)
For switch 3 and 4. Duty cycle 0.46. (PMOS)

Any reason why I am over achieving on the boost?
 

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