Patent ID: 8611115

Claim:
A resonant converter, comprising: a first input terminal and a second input terminal ( 1 , 2 ) in order to connect a voltage source (V Bulk ), wherein a first end of a first switch (S 1 ) is connected to the first input terminal ( 1 ), wherein a second end of the first switch (S 1 ) is connected to a first end of a second switch (S 2 ), wherein a second end of the second switch (S 2 ) is connected to the second input terminal ( 2 ), wherein a first end of a resonant circuit comprising at least one resonant inductance, at least one resonant capacitor (C 1 , C 2 , C s ), and at least a primary winding of a transformer (T 1 , T 1 — a , T 1 — b ) is connected to the second end of the first switch (S 1 ) and to the first end of the second switch (S 2 ), wherein a) third diode (D 3 ) is connected in conduction direction from the first end of the first switch (S 1 ) to the first end of a clamping capacitor (C clamp ), b) a fourth diode (D 4 ) is connected in conduction direction from the second end of the clamping capacitor (C clamp ) to the second end of the second switch (S 2 ), c) a comparator ( 5 ) is connected to the first and second end of the clamping capacitor (C clamp ), and d) the comparator ( 5 ) is connected to a pulse control unit ( 3 ) in order to control the first switch and the second switch (S 1 , S 2 ).