As an hiv+ uu man, can i impregnate a woman and not infect her with the virus ?

Congratulations for your apparent high level of responsibility! If your UU status (undetectable = untransmittable) is because of anti-HIV drugs, and if undectable (negarive HIV viral load) has been determined at least twice (and recently), your partner is not at risk for HIV by unprotected sex. This is exactly the right strategy for couples in your situation who wish to conceive. Good luck!