Gate driver power supply
AssigneeBAE Systems Controls Inc.
InventorPaul Carvell
Life of this patent
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Abstract
A power supply for a gate driver circuit is provided. The power supply is configured to supply a logic voltage, a positive voltage and a negative voltage to the gate driver circuit such that a gated semiconductor driven by the gate driver circuit does not inadvertently turn on. The gate driver power supply is configured such that the logic voltage becomes a steady-state voltage prior to the positive voltage becoming a steady-state voltage and remains above a first voltage value until the positive voltage is less than a second voltage value.
Claims16
A gate driver power supply for outputting a positive voltage, a negative voltage and a logic voltage, the gate driver power supply comprising:
- a power source coupled to a primary winding of a transformer via at least two complementary switches;
- a full bridge rectifier coupled to a secondary winding of the transformer;
- a first shunt regulating circuit coupled to a logic supply line and the full bridge rectifier;
- a series linear regulating circuit coupled to the logic supply line, the first shunt regulating circuit and the full bridge rectifier, the first shunt regulating circuit and the series linear regulating circuit regulating the logic voltage on the logic supply line;
- a second shunt regulating circuit coupled to the full bridge rectifier, a ground and a positive voltage line;
- and
- a diode having a first terminal coupled to the logic supply line and a second terminal coupled to a negative supply line.
Dependencies are inferred from the claim text.