Patent ID: 6121759
Filing Date: 2000-09-19
Classification: H02M

Abstract:
An arrangement of switched-mode power supplies comprising at least two switched-mode-type power supplies (1) that are provided with a transformer (2) and that have outputs (Uout) connected in parallel without a separation diode at the output of each power supply, each parallel-connected switched-mode power supply (1) further comprising means (4) for generating in a reference voltage output (Uref) a voltage that is proportional to the pulse duty factor of the secondary voltage of the transformer (2), the reference voltage outputs (Uref) of each switched-mode power supply (1) to be connected in parallel are coupled directly to each other, and each parallel-connected switched-mode power supply (1) also comprises means (5, 6) for detecting a current that flows through the reference voltage output (Uref), and for generating a correction voltage (Ucor) proportional to this current in order to correct the output voltage (Uout) of the switched-mode power supply.