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US 6,636,024 B2Granted
Switching voltage converter with half bridge output as reference voltage
AssigneeSemikron Electronik GmbH
InventorKlaus Zametzky
Life of this patent
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Abstract
A switching voltage converter in half bridge topology operates in switching mode with variable locking, consisting of two power switches, and one control circuit. The TOP switch is realized by one or more n-channel transistors. The BOT switch is realized by one or more p-channel transistors. The output Upwm of the half bridge is selected as a reference potential, which is not constant and varies during operation, for the control circuit and supply voltage Ubtop, Ubbot of the drivers of the TOP and BOT switch.
Claims6
A switching voltage converter in half bridge topology with variable locking, comprising:
- first and second power switches;
- a control circuit;
- and
- first and second drivers;
- the first power switch (TOP) comprising at least one n-channel transistor;
- the second power switch (BOT) comprising at least one p-channel transistor;
- the first and second drivers each having a respective variable supply voltage source (Ubtop, Ubbot);
- wherein an output (Upwm) of said half bridge is applied as a reference potential to said control circuit and to each said respective supply voltage source;
- and
- wherein said reference potential varies during circuit operation.
7 more elements
Dependencies are inferred from the claim text.