Upi Semiconductor Corporation

Jiun-Chiang Chen

Hua-Chiang Huang

Wei-Ling Chen

Chun-Hung Chang

Te-Hsien Liu

Shih-Chieh Hung

A DC-DC converter and a voltage conversion method thereof are provided. The DC-DC converter includes an output unit, a control unit and a trigger unit. The output unit converts an input voltage into an output voltage. The control unit generates a control signal according to the input voltage, an output feedback voltage related to the output voltage and a reference voltage, so as to make the output unit generate the output voltage. The trigger unit generates a first trigger signal according to the control signal, the output feedback voltage and the reference voltage. When the output feedback voltage is less than the reference voltage by a preset voltage, the control unit controls the output unit to perform a voltage-regulating process to the output voltage in advance.

DC-DC converter and voltage conversion method thereof

A switching power converter including an upper-bridge switch, a lower-bridge switch, an impedance circuit, a first control circuit, a second control circuit and a logic circuit is provided. The impedance circuit generates an output voltage and a sensing current according to a conductive state of the upper-bridge switch and the lower-bridge switch. The first control circuit generates a first pulse signal according to the output voltage. The second control circuit has a first mode and a second mode for generating a second pulse signal and a third pulse signal individually. Furthermore, the second control circuit uses different threshold values in different modes to determine whether to switch the mode thereof, so as to form a hysteretic effect in mode switching. The logic circuit controls the upper-bridge switch by the first pulse signal, and controls the lower-bridge switch by the second pulse signal or the third pulse signal.

Switching power converter

A voltage converter for converting an input voltage into an output voltage, wherein the output voltage is output to a load, is provided. An inductor is coupled between an output terminal and a node. A transistor is coupled between an input terminal and the node. A pulse width modulation (PWM) controller generates a first control signal according to the output voltage and a first reference voltage. An amplifier generates a second control signal according to the output voltage and a second reference voltage. A detector detects a loading of the load to generate a switching signal. A switching circuit selectively couples one of the PWM controller and the amplifier to the transistor according to the switching signal. The switching circuit controls the transistor according to the second control signal when the amplifier is coupled to the transistor, such that the transistor is operated in a saturation region.

Growing community of inventors

Hsinchu County, Taiwan

Jiun-Chiang Chen