Power control system
First Claim
1. A power control system comprising:
- a first comparison unit configured to receive a switch voltage and a first reference voltage, compare the switch voltage with the first reference voltage and output a first comparison voltage;
a second comparison unit configured to receive the first comparison voltage and a second reference voltage, compare the first comparison voltage with the second reference voltage and output a second comparison voltage;
a switching unit configured to receive the second comparison voltage and convert a power control voltage to the switch voltage in dependence on the second comparison voltage; and
a power supply unit configured to receive the switch voltage and output a working voltage to wake up a motherboard in dependence on the switch voltage, wherein the power supply unit only wakes up the motherboard when the power supply unit is completely discharged;
wherein the first comparison unit comprises a first comparator;
the first comparator comprises a non-inverting input terminal, an inverting input terminal, and an output terminal;
the non-inverting input terminal of the first comparator is configured to receive the switch voltage;
the inverting input terminal of the first comparator is configured to receive a direct voltage (DC) voltage via a first resistor;
the inverting input terminal of the first comparator is grounded via a second resistor;
the output terminal of the first comparator is configured to output the first comparison voltage; and
the DC voltage generates the first reference voltage at the inverting input terminal of the first comparator by the first resistor and the second resistor.
1 Assignment
0 Petitions
Accused Products
Abstract
A power control system includes a first comparison unit, a second comparison unit, a switching unit, and a power supply unit. The first comparison unit receives a switch voltage and a first reference voltage, compares the switch voltage with the first reference voltage and outputs a first comparison voltage. The second comparison unit receives the first comparison voltage and a second reference voltage, compares the first comparison voltage with the second reference voltage and outputs a second comparison voltage. The switching unit receives the second comparison voltage and converts a power control voltage to the switch voltage. The power supply unit receives the switch voltage and outputs a working voltage to wake up a motherboard. The power supply unit only wakes up the motherboard when the power supply unit is completely discharged.
-
Citations
16 Claims
-
1. A power control system comprising:
-
a first comparison unit configured to receive a switch voltage and a first reference voltage, compare the switch voltage with the first reference voltage and output a first comparison voltage; a second comparison unit configured to receive the first comparison voltage and a second reference voltage, compare the first comparison voltage with the second reference voltage and output a second comparison voltage; a switching unit configured to receive the second comparison voltage and convert a power control voltage to the switch voltage in dependence on the second comparison voltage; and a power supply unit configured to receive the switch voltage and output a working voltage to wake up a motherboard in dependence on the switch voltage, wherein the power supply unit only wakes up the motherboard when the power supply unit is completely discharged; wherein the first comparison unit comprises a first comparator;
the first comparator comprises a non-inverting input terminal, an inverting input terminal, and an output terminal;
the non-inverting input terminal of the first comparator is configured to receive the switch voltage;
the inverting input terminal of the first comparator is configured to receive a direct voltage (DC) voltage via a first resistor;
the inverting input terminal of the first comparator is grounded via a second resistor;
the output terminal of the first comparator is configured to output the first comparison voltage; and
the DC voltage generates the first reference voltage at the inverting input terminal of the first comparator by the first resistor and the second resistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A power control system comprising:
-
a first comparison unit configured to receive a switch voltage and a first reference voltage, compare the switch voltage with the first reference voltage and output a first comparison voltage; a second comparison unit configured to receive the first comparison voltage and a second reference voltage, compare the first comparison voltage with the second reference voltage and output a second comparison voltage; a switching unit comprising a switch unit configured to receive the second comparison voltage and convert a power control voltage to the switch voltage in dependence on the second comparison voltage; and a power supply unit configured to receive the switch voltage and output a working voltage to wake up a motherboard in dependence on the switch voltage, wherein when the switch unit receives the second comparison voltage at a first voltage level, the switch unit turns off and cannot convert the power control voltage at the first voltage level to the switch voltage at the first voltage level, and the power supply unit cannot output the working voltage to wake up the motherboard in dependence on the switch voltage at the first voltage level; and
when the switch unit receives the second comparison voltage at a second voltage level, the switch unit turns on and convert the power control voltage at the first voltage level to the switch voltage at the first voltage level, and the power supply unit outputs the working voltage to wake up the motherboard when the power supply unit is completely discharged;wherein the first comparison unit comprises a first comparator;
the first comparator comprises a non-inverting input terminal, an inverting input terminal, and an output terminal;
the non-inverting input terminal of the first comparator is configured to receive the switch voltage;
the inverting input terminal of the first comparator is configured to receive a direct voltage (DC) voltage via a first resistor;
the inverting input terminal of the first comparator is grounded via a second resistor;
the output terminal of the first comparator is configured to output the first comparison voltage; and
the DC voltage generates the first reference voltage at the inverting input terminal of the first comparator by the first resistor and the second resistor. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
Specification