Upi Semiconductor Corporation

Industrial Technology Research Institute

Chih-Wen Hsiao

Keng-Li Su

Chih-Lien Chang

Chih Sheng Lin

Wen-Chieh Tsai

Chen-Pang Kung

Chih-Sheng Lin

Yu-Wu Wang

Yi-Kai Wang

Min-Chuan Wang

Chien-Ming Chen

The disclosure provides a power switching circuit. The power switching circuit includes a driving circuit, a determining circuit, a first power switch, and a second power switch. The driving circuit outputs a first driving signal and a second driving signal. The determining circuit is coupled to the driving circuit and outputs a control signal to the driving circuit. The first power switch is coupled to a first input voltage and receives the first driving signal. The second power switch is coupled to a second input voltage and receives the second driving signal. When the first power switch and the second power switch are switched, the second driving signal rises from a first level to a preset level, and the determining circuit controls the driving circuit to utilize the first driving signal to turn off the first power switch.

Power switching circuit

An output stage circuit of a power conversion circuit includes a first power switch, a driving circuit, a first current source, a second current source and a combining circuit. The first power switch is coupled to a second terminal of a bootstrap capacitor. The driving circuit is coupled to the first terminal of the bootstrap capacitor and the first power switch and provides a control signal to the first power switch. The first current source generates a first current according to the control signal. The second current source generates a second current according to a reference voltage which is a first voltage at the first terminal or a second voltage at the second terminal. The combining circuit, coupled to the driving circuit, the first current source and the second current source, generates a switch operation indicating signal to the driving circuit according to the first current and second current.

Output stage circuit of power conversion circuit

A DC-to-DC controller and a control method thereof are provided. The DC-to-DC controller couples to an output stage, and the output stage provides an output voltage and includes an upper bridge switch and a lower bridge switch. The DC-to-DC controller includes a time signal generating unit and a time signal control circuit. The time signal control circuit couples to the time signal generating unit and receives a preset voltage and the output voltage. During a soft start period, if the output voltage is lower than the preset voltage, after the upper bridge switch is turned off and before the upper bridge switch is turned on again, the time signal control circuit turns off the upper bridge switch and the lower bridge switch for a first preset time and turns on the lower bridge switch for a second preset time.

DC-to-DC controller and control method thereof

A DC-to-DC controller, a DC-to-DC power converter and a control method thereof are provided. The controller is coupled to an upper-bridge switch and a lower-bridge switch and includes a time generation unit providing a time signal, a voltage identification (VID) change determining circuit and a time control circuit. The VID change determining circuit provides a determination signal in response to a VID signal. The time control circuit provides a control signal according to the time signal and the determination signal. When the VID signal changes from high to low, the time control circuit turns off the upper-bridge switch for a first preset time according to the determination signal and the time signal, and during the first preset time, the time control circuit controls the lower-bridge switch to be turned on for a second preset time multiple times, and to be turned off for a third preset time multiple times.

DC-to-DC controller, DC-to-DC power converter and control method thereof

A power switch circuit includes a first input voltage, a first switch element, a switcher, a first bootstrap capacitor, and a second bootstrap capacitor. The first switch element includes a first control end, a first input end, and a first output end. The first input end is coupled to the first input voltage. The first output end provides an output voltage. The switcher is coupled to the first switch element. The first bootstrap capacitor is coupled to the switcher and provides a first driving voltage. The second bootstrap capacitor is coupled to the switcher and provides a second driving voltage. The first bootstrap capacitor and the second bootstrap capacitor alternately supply the first driving voltage or the second driving voltage to the first control end through an operation of the switcher.

Power switch circuit and integrated circuit of power switch controller

A method for generating a current adapted to a parameter setting circuit is provided. The parameter setting circuit is coupled to an external setting impedor. The external setting impedor is coupled to an external voltage and outputs a first current. The method for generating the current includes the following steps. A reference voltage and an end voltage of a reference resistor are compared to get a comparison result. The end voltage is adjusted according to a comparison result. A setting parameter is obtained according to the adjusted end voltage. A setting current is generated according to a compensation current. The compensation current is related to a first current and the setting parameter. In addition, a parameter setting circuit of a power conversion apparatus is also provided.

Parameter setting circuit of a power conversion apparatus and a method for generating a current

A power converter is disclosed. The power converter includes a comparator and a timing generator. The comparator compares a first input signal with a second input signal to provide a control signal. The timing generator is coupled to the comparator. The timing generator includes a plurality of timing generating units, a logic unit, and a calculation unit. The timing generator generates a plurality of timing signals through the timing generating units and the logic unit according to the control signal, and the calculation unit forms a pulse width modulation (PWM) signal according to the timing signals. At least a part of the timing signals are overlapped.

Power converter with automatic on-time extension function and operating method thereof

A monitoring method of a three-dimensional integrated circuit (3D IC) is provided, wherein the method includes: providing a plurality of TSVs, providing a plurality of inverters; connecting the inverters with the plurality of TSVs as a circuit loop; enabling the circuit loop to oscillate; measuring an output signal on an output end of one of the plurality of inverters; and determining the manufacturing state of the plurality of TSVs of the 3D IC based on the output signal and apparatus using the same.

Monitoring method for three-dimensional intergrated circuit (3D IC) and apparatus using the same

A monitoring method for Through-Silicon Vias (TSVs) of a three-dimensional integrated circuit (3D IC) is provided, wherein the 3D IC includes a plurality of TSVs, and the method includes: providing a plurality of inverters; connecting the inverters with the TSVs as a circuit; enabling the circuit to oscillate; measuring an output signal on an output end of one of the inverters; and determining the characteristic of TSVs of the 3D IC based on the output signal.

Monitoring method for through-silicon vias of three-dimensional intergrated circuit (3D IC) and apparatus using the same

An electrostatic discharge (ESD) structure for a 3-dimensional (3D) integrated circuit (IC) through-silicon via (TSV) device is provided. The ESD structure includes a substrate, a TSV device which is formed through the substrate and is equivalent to a resistance-inductance-capacitance (RLC) device, and at least one ESD device which is disposed in the substrate and electrically connected to one end of the TSV device. The ESD structure can protect the 3D IC TSV device.

Electrostatic discharge structure for 3-dimensional integrated circuit through-silicon via device

A memory with improved write current is provided, including a bit line, a write switch and a control circuit. The write switch is coupled between a voltage source and the bit line, and has a control terminal. Based on a bit line select signal, the control circuit controls the electric conductance of the write switch and discharges/charges the parasitic capacitors of the write switch. The voltage source is turned on after the control terminal of the write switch reaches a pre-determined voltage level.

Memories with improved write current

This invention provides a circuit structure with a double-gate organic thin film transistor device and application thereof. A protection layer covered on an organic thin film transistor structure having a bottom gate is used as another gate insulating layer. A metal layer is formed on this gate insulating layer to serve as another gate. A double-gate structure is hence accomplished. The double-gate structure can be used in a circuit. By the double-gate structure the threshold voltage of the organic thin film transistor can be adjusted, and advantageously changing the characteristic of the organic thin film transistor to improve the accuracy of signal transmission.

Growing community of inventors

Hsinchu County, Taiwan

Chih-Wen Hsiao