摘要:
A system and method that can analyze a temperature rise of a printed circuit board (PCB). The system and method receives attribute parameters of the PCB from an input device, and generates a temperature rise formula according to the received attribute parameters. Additionally, the system and method calculates a temperature rise of a local area surrounding each component on the PCB according to the temperature rise formula.
摘要:
A system and method for inspecting layout of a printed circuit board (PCB) provides a graphical user interface (GUI). The GUI displays a layout of the PCB. High side pins of a pulse width modulation (PWM) controller and a component connected to a high side pin are found. If the component is a metallic oxide semiconductor field effect transistor (MOSFET), the system calculate absolute a linear distance and a trace distance between a source pin of the MOSFET and a capacitor pin of a coupling capacitor connected to the source pin. If the linear distance, the trace distance and a capacitance of the coupling capacitor accord with a layout standard, the layout of the PCB is determined to be up to standard.
摘要:
A controlling circuit for automatically adjusting clock frequency of a CPU is provided. The controlling circuit includes: a current sensing circuit for converting a current signal of the CPU to a voltage signal; a voltage amplifying circuit for amplifying the voltage signal; a multi-stage switching circuit for converting the amplified voltage signal to switched signals; and a priority decoding circuit decoding the switched signals, the decoded switched signals being input to a clock generator of the CPU, and thereby adjusting the clock frequency of the CPU to fit different load on the CPU.
摘要:
A system and method for checking a ground via of control chips of a printed circuit board (PCB) provides a graphical user interface (GUI) displaying a layout of the PCB. The control chip has a plurality of ground pins. The computer searches for signal path routing of each ground pin and ground vias along each signal path routing of each ground pin. If there are any ground vias having the same absolute coordinates, the computer determines that the ground vias are shared by more than one ground pin.
摘要:
An exemplary motherboard includes a first slot arranged for mounting a first type of memory, a second slot arranged for mounting a second type of memory, a voltage regulator electronically connected to the first slot and the second slot, and a serial presence detect (SPD) unit connected to the voltage regulator. The first memory and the second memory alternatively mounted on the motherboard, the SPD detects which type of memory is mounted on the motherboard, and the voltage regulator outputs voltages suitable for the type of the memory mounted on the motherboard according to a detection result of the SPD.
摘要:
A printed circuit board includes a first to a fifth connector pads, a first to an eighth coupling capacitor pads, a first to a tenth transmission lines, a first via and a second via, a first to a fourth sharing pads, and a voltage converting circuit. The printed circuit board is operable to selectively support different types of connectors.
摘要:
An exemplary motherboard includes a driving module, a first slot module arranged for mounting a first type of memory and connected to the driving module via a first channel, a second slot module arranged for mounting a second type of memory and connected to the driving module via a second channel, and a voltage regulator electronically connected to the first slot module and the second slot module. The first memory and the second memory are alternatively mounted on the motherboard, the voltage regulator detects which type memory is currently mounted on the motherboard and outputs voltages suitable for the type of the memory mounted on the motherboard accordingly.
摘要:
A motherboard includes a first slot arranged for mounting a first type of memory, a second slot arranged for mounting a second type of memory, and a voltage regulating circuit electronically connected to the first slot and the second slot. The first memory and the second memory are alternatively mounted on the motherboard, the voltage regulating circuit detects which type memory is currently mounted on the motherboard and outputs voltages suitable for the type of the memory mounted on the motherboard accordingly.
摘要:
A method for calculating a voltage spike value includes: predefining calculating requirements; inputting parameter values; analyzing whether inputted parameter values match with the calculating requirements; establishing a computing formula for calculating the voltage spike value if the inputted parameter values match with the calculating requirements; and calculating the voltage spike value by utilizing the inputted parameter values and the computing formula. A related system is also disclosed.
摘要:
A computer-implemented method for designing a voltage regulator module (VRM) is disclosed. The method includes receiving design parameters and a component data for each component and storing the design parameters and the component data for each component into a component selection table, calculating a work efficiency of the VRM, and storing the work efficiency into a power computation table. The method further includes simulating a derating of each component according to a corresponding rated stress of each component if the work efficiency is greater than or equal to a predetermined work efficiency, calculating a stress ratio of each component, and storing the stress ratio into a component derating table. The component selection table, the power computation table and the component derating table are stored to form a desired VRM model if the stress ratio of each component meets a corresponding derating specification.