Abstract: A power supply device and an operation method thereof are provided. The power supply device includes a charge pump circuit and a power supply circuit. The power supply circuit supplies a first power voltage to the charge pump circuit. The charge pump circuit converts the first power voltage into a second power voltage so as to supply the second power voltage to an application circuit. The power supply circuit detects the second power voltage or an output current output by the charge pump circuit to obtain a detection result. The power supply circuit dynamically adjusts the first power voltage based on the detection result.

Abstract: A power converter includes a high side switch, a low side switch, a low side driver, a loading detector, a configurable regulator and a high side driver. The low side driver generates a low side drive signal to control the low side switch. The configurable regulator generates a regulation voltage, a magnitude of which is greater when the loading detector detects that the power converter has light loading than when the loading detector detects that the power converter has heavy loading. The high side driver generates a high side drive signal that switches between the input voltage and the regulation voltage to control the high side switch.

Abstract: A power supply device and an operation method thereof are provided. The power supply device includes a charge pump circuit and a power supply circuit. The power supply circuit supplies a first power voltage to the charge pump circuit. The charge pump circuit converts the first power voltage into a second power voltage so as to supply the second power voltage to an application circuit. The power supply circuit detects the second power voltage or an output current output by the charge pump circuit to obtain a detection result. The power supply circuit dynamically adjusts the first power voltage based on the detection result.

Abstract: A power converter includes a high side switch, a low side switch, a low side driver, a loading detector, a configurable regulator and a high side driver. The low side driver generates a low side drive signal to control the low side switch. The configurable regulator generates a regulation voltage, a magnitude of which is greater when the loading detector detects that the power converter has light loading than when the loading detector detects that the power converter has heavy loading. The high side driver generates a high side drive signal that switches between the input voltage and the regulation voltage to control the high side switch.

Abstract: Disclosed is a Power Factor Correction Controller, which comprises a boost converter, a current sensing unit, an arithmetic unit, and a switch driving unit. The current sensing unit can sense or derive the current that pass through the energy delivery device, which is normally implemented by a diode or a switch. The current sensing unit can also sense the inductor current, or the switch current. With the current sensing unit, the arithmetic unit can calculate the optimum switch on-time or when to turn off the switch, without direct-sensing of the load. The disclosed method reduces the system cost by removing the needs to sense the load condition as in the prior arts. The disclosed method also improves the system response by sensing the delivered current at energy delivery side, rather than the receiver side as in the prior arts.

Abstract: Disclosed is a Power Factor Correction Controller, which comprises a boost converter, a current sensing unit, an arithmetic unit, and a switch driving unit. The current sensing unit can sense or derive the current that pass through the energy delivery device, which is normally implemented by a diode or a switch. The current sensing unit can also sense the inductor current, or the switch current. With the current sensing unit, the arithmetic unit can calculate the optimum switch on-time or when to turn off the switch, without direct-sensing of the load. The disclosed method reduces the system cost by removing the needs to sense the load condition as in the prior arts. The disclosed method also improves the system response by sensing the delivered current at energy delivery side, rather than the receiver side as in the prior arts.