Asustek Computer Inc.

Chun-San Lin

Hsiang-Jui Hung

Sun-Chen Yang

Han-Hsun Chen

Ming-Ting Tsai

Hsi-Ho Hsu

Wei-Gen Chung

Wei Kao

Chen-Hao Yu

Yun-Jiun You

A power supply phase doubling system includes a pulse width modulation (PWM) controller and first and second phase doubling chips. The PWM controller outputs a PWM signal. The first phase doubling chip is operated at a power supply voltage and has a first PWM output pin to generate a first control signal and a second control signal according to the PWM signal, and generates a first output signal according to the first control signal. The second phase doubling chip is operated at the power supply voltage, has a second PWM output pin, and is configured to generate a second output signal according to the second control signal. The first and second phase doubling chips are respectively switched between a master mode and a slave mode according to a voltage level of the first PWM output pin and a voltage level of the second PWM output pin.

Power supply phase doubling system

A voltage detection device is provided. The voltage detection device includes a first voltage divider circuit, a comparison circuit, and a second voltage divider circuit. The first voltage divider circuit is configured to receive an input voltage and output a comparison voltage according to the input voltage. The comparison circuit is configured to receive the comparison voltage to compare the comparison voltage with a reference voltage and determine whether to change a trigger signal according to a comparison result. The second voltage divider circuit is configured to receive the input voltage. When the input voltage is greater than or equal to a predetermined voltage value, the second voltage divider circuit and the first voltage dividing circuit form a parallel structure to pull down the comparison voltage.

Voltage detection device

A transient voltage compensation apparatus and a power supply using the same are provided. The power supply mainly uses a compensation circuit coupled between an input terminal and an output terminal of a power converter. When a load of the power supply is switched in a very short time, a power coupled to the compensation circuit is retrieved to compensate the output of the power supply, such that the output voltage is kept steady, and the transient response of the power supply is increased.

Transient voltage compensation apparatus and power supply using the same

A transient voltage compensation apparatus and a power supply using the same are provided. The power supply mainly uses an energy transferring circuit coupled between an input terminal and an output terminal of a power converter. When a load of the power supply is switched in a very short time, a power coupled to the energy transferring circuit is retrieved to compensate the output of the power supply, such that the output voltage is kept steady, and the transient response of the power supply is increased.

The invention relates to a buck converter including a first high-side switch circuit having an input terminal electrically connected to a first power input terminal, a control terminal electrically connected to a first control signal source, and an output terminal; a second high-side switch circuit having an input terminal electrically connected to a second power input terminal, a control terminal electrically connected to a second control signal source, and an output terminal electrically connected to the output terminal of the first high-side switch; a lower-side switch circuit having a first terminal electrically connected to the output terminal of the first high-side switch and a second terminal electrically connected to a reference power terminal; and a filter electrically connected to the output terminal of the first high-side switch and a power output terminal, wherein the first and second high-side switch circuits will not turn on at the same time.

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Taipei, Taiwan

Chun-San Lin