Power on control device and method
AssigneeASUSTeK COMPUTER INC.
InventorsSheng-Yuan Lee, Long-Tai Chen
Life of this patent
Estimating the term…
Abstract
A power on control device and method are used at an adaptor providing a constant voltage. The power on control device includes a first voltage converting circuit, a second voltage converting circuit, a third voltage converting circuit, and a comparison module. The first voltage converting circuit receives the constant voltage and generates a reference voltage. The second voltage converting circuit receives the constant voltage and generates operating voltages. The third voltage converting circuit receives the operating voltages and generates preparatory voltages corresponding to the operating voltages according to the operating voltages. The comparison module outputs a power good signal when all the preparatory voltages are larger than the reference voltage.
Claims9
A power on control device, wherein the power on control device is connected with an adaptor providing a constant voltage, the power on control device comprising:
- a first voltage converting circuit receiving the constant voltage and generating a reference voltage;
- a second voltage converting circuit receiving the constant voltage and generating a plurality of operating voltages;
- a third voltage converting circuit receiving the operating voltages and generating a plurality of preparatory voltages correspondingly according to the operating voltages;
- and
- a comparison module outputting a power good signal when all the preparatory voltages are larger than the reference voltage.
A power on control method, comprising:
- receiving a constant voltage of an adaptor and generating a reference voltage;
- receiving the constant voltage and generating operating voltages;
- receiving the operating voltages and generating preparatory voltages correspondingly according to the operating voltages;
- and
- outputting a power good signal when all the preparatory voltages are larger than the reference voltage.
Dependencies are inferred from the claim text.