Patent ID: 9154040
Filing Date: 2015-10-06
Classification: H02M

Abstract:
1. A voltage converter ( 1 ), comprising a primary side ( 2 ) having a DC voltage input (Vin) and a secondary side ( 3 ) having a DC voltage output (Vout), wherein an LC series resonance circuit ( 4 ) is disposed on the primary side ( 2 ) that is connectable via a first switch (S 1 ) to the input voltage and via a second switch (S 2 ) to ground, and wherein on the secondary side ( 3 ), an output switch (S 3 ) and an output capacitor (C) are each connected in parallel to the DC voltage output (Vout) and connected to each other through an inductor (L), a diode (Dr) connects the output switch (S 3 ) to another component of the circuit, so that voltage overshoots occurring at the output switch (S 3 ) are diverted to another component of the circuit, wherein a cathode of the diode (Dr) is either connected to the voltage input (Vin) of the circuit or to the output capacitor (C) of the circuit, wherein the diode (Dr) is connected to the output capacitor (C) directly or via a RC network formed by at least one resistor (Rs) and at least one capacitor (Cr) connected in parallel, and the primary side ( 2 ) and the secondary side ( 3 ) are galvanically isolated through a transformer ( 5 ).