LM2736: Why do you use NMOS for switching transistor

Junghyun Park

Part Number: LM2736

Why did you use nmos for the switching transistor in the lm2736?

If you use PMOS, it will be possible to configure it without CBOOST.

Is it because of the size of P/NMOS?

0 Miranda Gu 8 months ago

Hi Park,

Zixu will reply you after New Year holiday. Appreciate your understanding.

0 Athos Zhao 8 months ago

Hi Park,

The performance of PMOS is not as good as NMOS based on current process including the size, current driving capability and other parameters.

So most buck converters are using NMOS for high-side FET.

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