Psychodynamics is broad term to signify an evolution from Psychoanalysis. While a psychodynamic therapist may believe is some theories pioneered by Freud and others, its unlikely he would emphasize dream analysis and Freuds psychosexual theories. For example: he wouldn't make grand conclusions based on dreams, or that your OCD is the result of poor toilet training..
Psychodynamics generally emphasizes bring awareness to a person of there cognitions, believing that the unconscious is a real and powerful force in ones life, that childhood development plays a big role in who we become as adults, the use of free association - people just talking about whatever comes to mind rather then the therapist taking a more active role, ideas like the psychic apparatus, defense mechanisms, cognitive dissonance, transference, and counter transference.
In general most therapists are eclectic in practice and will use a variety of theories. Psychodynamic in conjunction with cognitive-behavioral therapy seems to be one of the more effective schemes.