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US 8,558,522 B2Granted
Method for scaling a drive signal and circuit therefor
AssigneeSemiconductor Components Industries, LLC
InventorsPaul J. Harriman, Michael A. Stapleton
Life of this patent
Estimating the term…
Abstract
In accordance with an embodiment, a converter includes a circuit and method for scaling a drive signal. The converter determines the power at its input and scales a drive signal in accordance with the input power. In accordance with another embodiment the converter determines the power at its output and scales the drive signal in accordance with the output power.
Claims20
A method for scaling a drive signal suitable for use in a power supply, comprising:
- providing a converter having an input and an output;
- determining an input power or an output power of the converter;
- and
- scaling a supply signal of a drive circuit in the converter in response to the input power or the output power to generate a scaled supply signal, the drive circuit comprising a first driver device having first and second supply terminals and a second driver device having first and second terminals, the scaled supply signal coupled to the first supply terminal of the first driver device and to the first supply terminal of the second driver device.
1 more element
A method for adjusting a signal, comprising:
- providing a converter having an input and an output;
- determining power at the input or power at the output of the converter;
- generating a scaling signal in accordance with the power at the input or the power at the output of the converter;
- and
- using the scaling signal to adjust a drive signal of a circuit in the converter to generate an adjusted drive signal, the circuit comprising a first driver device having first and second supply terminals and a second driver device having first and second supply terminals, the adjusted drive signal coupled to the first supply terminal of the first driver and to the first supply terminal of the second driver.
2 more elements
A circuit, comprising:
- a drive circuit comprising first and second driver devices, each driver device having first and second supply input terminals and an output terminal;
- a scaling circuit having first and second input terminals and an output terminal, the scaling circuit configured to provide a scaled supply signal to the first and second driver devices and the output terminal coupled to the first supply input terminals of the first and second driver devices;
- a multiplier circuit having first and second input terminals and an output terminal, the output terminal of the multiplier circuit coupled to the first input terminal of the scaling circuit;
- a first buffer circuit having first and second input terminals and an output terminal, the output terminal of the first buffer circuit coupled to the first input terminal of the multiplier circuit;
- a second buffer circuit having an input terminal and an output terminal, the output terminal of the second buffer circuit coupled to the second input terminal of the multiplier circuit;
- and
- a resistor having first and second terminals, the first terminal of the resistor coupled to the first input terminal of the first buffer circuit and to the input terminal of the second input circuit, and the second terminal of the resistor coupled to the second input terminal of the first buffer circuit.
4 more elements
Dependencies are inferred from the claim text.