Switching voltage regulators with output voltages indirectly regulated respective to directly regulated boosted input voltages

Claim 1

A switching voltage regulator comprising: first and second terminals for connecting to a primary energy source; third and fourth terminals for connecting to a load; a converter transformer having first and second primary winding connections and having first and second secondary winding connections; electrically controllable first switch means for selectively connecting said first primary winding connection between said first and second terminals during first time intervals interspersed with second time intervals; first and second capacitors having interconnected first plates and having second plates respectively connected to said third terminal and to said fourth terminal; second switch means conductive during said first time intervals for connecting said first secondary winding connection across said first capacitor; third switch means conductive during said second time intervals for connecting said second secondary winding connection across said second capacitor; a third capacitor having a first plate connected to second terminal and having a second plate; fourth switch means conductive during said second time intervals for connecting said second primary winding connection across said third capacitor; and means responsive to the voltage between said first terminal and the second plate of said third capacitor departing from a prescribed value for developing electric control signal applied to said first switch means, thereby to complete a regulator loop for directly regulating the voltage between said first terminal and the second plate of said third capacitor and for indirectly regulating the voltage between said third and fourth terminals.