Direct current-direct current converter for auto radio in motor vehicle, has polarization unit intercalated between control unit and MOSFET to fix voltage on MOSFET gate to maintain MOSFET in passing state, when it is controlled in state

摘要

The converter has a main stage (E1) formed of an inductor (L1) and a switching unit i.e. MOSFET (S2), and a secondary stage (E2) formed of another inductor (L2) and another switching unit i.e. MOSFET (S2a). A gate of each MOSFET is controlled by a control unit (SW). A polarization unit (Pol) polarizes the latter MOSFET, and is intercalated between the control unit and the latter MOSFET for fixing control voltage on the gate of the latter MOSFET to maintain the latter MOSFET in a passing state, when the latter MOSFET is controlled in the state.