Abstract:
A method for fabricating a packaging substrate includes: stacking two metal layers; encapsulating the two metal layers with assistant dielectric layers; forming built-up structures on the assistant dielectric layers, respectively; and separating the built-up structures along the interface between the two metal layers so as to form two packaging substrates. Owing to the adhesive characteristic of the assistant dielectric layers, the two metal layers are unlikely to separate from each other during formation of the built-up structures. But after portions of the dielectric layer around the periphery of the metal layers are cut and removed, the two metal layers can be readily separated from each other. The two metal layers can be patterned to form wiring layers, metal bumps, or supporting structures to avoid waste of materials. A packaging substrate and a fabrication method thereof are provided.
Abstract:
An adaptive power converter controller coupled to a load and a power converter circuit is provided. The adaptive power converter controller has an adaptive voltage sensing unit and a converting control circuit. The adaptive voltage sensing unit is coupled to the load and output a voltage sensing signal according to a load current and a load voltage from the load. The converting control circuit is utilized for receiving the voltage sensing signal and comparing the voltage level of the voltage sensing signal with a current sensing signal, which is corresponding solely to the load current, so as to decide whether the power converter circuit is controlled according to the voltage sensing signal or the current sensing signal.
Abstract:
A method for fabricating a packaging substrate includes: providing a base having a release film with two opposite surfaces, two first auxiliary dielectric layers enclosing the release film, and two metal layers disposed on the two first auxiliary dielectric layers, therewith an effective area defined on the two metal layers; forming an inner wiring layer from the two metal layers; forming on each of the two first auxiliary dielectric layers and the inner wiring layers a built-up structure having first conductive pads so as for two initial substrates to be formed on the opposite surfaces of the release film; removing whatever is otherwise lying outside the effective area; removing the release film; and forming dielectric layer openings in the two first auxiliary dielectric layers so as for two substrate bodies to be formed from the initial substrates, wherein a portion of the inner wiring layers are exposed to thereby function as second conductive pads.
Abstract:
A method for fabricating a packaging substrate includes: stacking two metal layers; encapsulating the two metal layers with assistant dielectric layers; forming built-up structures on the assistant dielectric layers, respectively; and separating the built-up structures along the interface between the two metal layers so as to form two packaging substrates. Owing to the adhesive characteristic of the assistant dielectric layers, the two metal layers are unlikely to separate from each other during formation of the built-up structures. But after portions of the dielectric layer around the periphery of the metal layers are cut and removed, the two metal layers can be readily separated from each other. The two metal layers can be patterned to form wiring layers, metal bumps, or supporting structures to avoid waste of materials. A packaging substrate and a fabrication method thereof are provided.
Abstract:
A power control circuit with wire compensation is provided. The power control circuit is applied in a power converter, which has an output coupled to a load through a power wire. The power control circuit has an adaptive sensing circuit and a controller. The adaptive sensing circuit is utilized for detecting an output voltage of the power converter and a current on the power wire and generating a feedback signal according to the output voltage and the current on the power wire. The controller is utilized for adjusting a level of the output voltage according to the feedback signal.
Abstract:
A method for fabricating a packaging substrate includes: providing a base having a release film with two opposite surfaces, two first auxiliary dielectric layers enclosing the release film, and two metal layers disposed on the two first auxiliary dielectric layers, therewith an effective area defined on the two metal layers; forming an inner wiring layer from the two metal layers; forming on each of the two first auxiliary dielectric layers and the inner wiring layers a built-up structure having first conductive pads so as for two initial substrates to be formed on the opposite surfaces of the release film; removing whatever is otherwise lying outside the effective area; removing the release film; and forming dielectric layer openings in the two first auxiliary dielectric layers so as for two substrate bodies to be formed from the initial substrates, wherein a portion of the inner wiring layers are exposed to thereby function as second conductive pads.