Powering 1.0um DMOS process using single 1.5V. Possible?

[kumarghz]

Hello guys,

I need to use 1.0um DMOS process from XFAB to design a step-up boost converter (1.5V -to- 5V).
I understand that the minimum operating voltage of this process is 5V.
Is there method to design this boost converter by using single 1.5V supply?
Please advice.

regards,
Kumar

 

[erikl]

As you'll probably know, XFAB's XDH10 is a very high voltage process (trench isolation, up to 650V). However, with threshold voltages <|1V| for the lower voltage transistors it should be possible to work with a (start-up?) power supply of 1.5V.

As always, the best info comes from the fab itself. Ask them!