Switching voltage converter
AssigneeSemikron Elektronik GmbH & Co. KG
InventorKlaus Zametzky
Life of this patent
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Abstract
A switching voltage converter in half bridge topology includes a control circuit for achieving a constant locking time for two power switches to switch between a TOP position and BOT position. The TOP switch is realized by one or more parallel-switched n-channel transistors and the BOT switch 3 is realized by one or more parallel-switched p-channel transistors. Both of the power switches are controlled by a gate driver. The reference potential of the gate driver is at the potential of the output signal Uout of the half bridge. The driver is controlled by a switching-signal producing unit at the same reference potential as the driver 1, whereby unit and driver can be directly connected to each other.
Claims4
A switching voltage converter in half bridge topology with a constant locking time between a TOP switch and a BOT switch, comprising:
- a control device;
- said TOP switch comprising at least one parallel-switched n-channel transistor;
- said BOT switch comprising at least one parallel-switched p-channel transistor;
- a gate driver controlling said TOP switch and said BOT switch;
- wherein said control device controls said gate driver;
- and
- a reference voltage and a supply voltage for said gate driver and said control device are at a same potential of an output voltage of said half bridge, whereby said potential is varying during operation.
Dependencies are inferred from the claim text.