Hon Hai Precision Industry Co., Ltd.

Tsung-Sheng Huang

Chun-Jen Chen

Duen-Yi Ho

Wei-Chieh Chou

Shou-Kuo Hsu

Ying-Tso Lai

Hsien-Chuan Liang

Shin-Ting Yen

A method for calculating efficiency of a power supply system includes: displaying a parameter selection interface on the display unit for selecting power supply parameters and transmission line parameters. Obtaining power supply parameters and transmission line parameters selected by the user via the parameter selection interface when determining the user has finished the selection. Determining a efficiency of a selected power supply of the power supply parameters according to the relationship table, and calculating a sum efficiency according to the obtained power supply parameters and the transmission line parameters and the efficiency of the selected power supply. And calculating a total efficiency of the power supply system according to each sum efficiency when determining that all of the power supplies of the power supply system have been selected.

Electronic device and method for calculating efficiency of simulative power supply system

A circuit board includes an outer conductive layer, a number of inner conductive layers, at least one group of vias defined through the outer conductive layer and the inner conductive layers and electrically connected each conductive layers, at least one power supply element, and at least one electronic element. The at least one group of vias surrounds the at least one power supply element. When the least one power supply element outputs current to the at least one electronic element, a first portion of the output current flows to the inner conductive layers through the group of vias surrounding the at least one power supply element to be input to the at least one electronic element, and a second portion of the output current flows into the at least one electronic element through the outer conductive layer.

Circuit board with even current distribution

A power supply device includes a power supply unit and a feedback control unit. The power supply unit is configured for generating an electric potential to be provided to a load. The feedback control unit detects the electric potential and adjusts relevant parameters of the electrical potential to achieve predetermined values. The feedback control unit includes a first feedback circuit and a second feedback circuit electrically connected in series.

Power supply device

A circuit board includes a plurality of conductive layers, at least one group of vias, a number of second vias, at least one power supply element, and at least one electronic element. Each conductive layer includes a conductive portion. Both the first vias and the second vias are defined through the conductive layers and electrically connected each conductive layers. The at least one group of first vias surrounds the at least one power supply element. The second vias are arranged along the side of the conductive portion, and positioned between the power supply element and the electronic element. Current from a power supply element flows to the inner conductive layers through the group of surrounding first vias. Current transmission on each conductive layer continuously flows to another conductive layer having a lower resistance through the second vias during transmission.

Circuit board with higher current

A current balance circuit includes a first and a second current sensors, an averager, a first and a second control modules, and a first and a second rheostat elements. The first and second current sensors receive a first current and a second current from a power source respectively and convert the first and second currents into a first and a second voltages. The averager receives the first and second voltages and calculates to obtain an average voltage. The first and second control modules receive the first voltage, the second voltage, and the average voltage, to obtain a first and a second control signals, to control current conduction ability of the first and second rheostat elements, to make the first and second currents keep a dynamic balance.

Current balance circuit to keep dynamic balance between currents in power passages of power connector

An electronic device reads a layout file of a printed circuit board (PCB) to be manufactured from a storage device, obtains length information and section area information of copper cladding distributed on power source areas and ground trace areas in each of one or more layers of the PCB to be manufactured by analyzing the layout file, and calculates power loss in each of the one or more layers according to the length information, the section area information, a resistance value of the copper cladding, and preset parameters of a power supply module and an integrated circuit (IC) load to be located on the PCB. In response to a determination that the power loss in the layer exceeds a preset range, the electronic device indicates the locations of the power source areas and the ground trace areas of a layer in the PCB layout file which need to be redesigned.

Electronic device and simulation method for checking printed circuit board power loss

A printed circuit board includes a top layer and a bottom layer. A power supply and an electronic component are located on the top layer. The power supply is connected to the top layer and the bottom layer through a first via. A number of second vias extends through the top layer and the bottom layer, and is electrically connected to the top layer and the bottom layer. A right-angled triangular void area without vias defined therein is formed on the printed circuit board, between the second vias and the electronic component. The second vias are arranged on a hypotenuse of the void area.

Printed circuit board

A voltage regulating circuit includes a pulse width modulation controller, a current sense circuit, a voltage feedback circuit, and a gain-and-bias circuit. The current sense circuit includes an inductor and a capacitor. The voltage feedback circuit includes first and second resistors. The gain-and-bias circuit includes an operational amplifier. A first terminal of the capacitor is connected to an inverting input terminal of the operational amplifier through a third resistor. A second terminal of the capacitor is connected to a non-inverting input terminal of the operational amplifier through a fourth resistor. The inverting input terminal of the amplifier is connected to an output terminal of the operational amplifier through a fifth resistor. The non-inverting input terminal of the operational amplifier is grounded through a sixth resistor. The output terminal of the operational amplifier is connected to the node between the first and second resistors through a seventh resistor.

Voltage regulation circuit

A printed circuit board (PCB) includes first to fourth layers. A power supply is arranged on the first layer. An electronic component is arranged on the fourth layer. A first via and a second via extend through the PCB and are electrically connected to the electronic component. The PCB further includes third to seventh vias. A length of a transmission path of the current flows from the power supply to electronic component through the third via and the seventh via is almost the same as a length of a transmission path of the current flows from the power supply to the electronic component through the fourth to sixth vias.

A printed circuit board (PCB) can prevent electrostatic discharge. A number of vias are embedded in the PCB. A circular insulated member is disposed between each via and the number of vias. Each via includes a layer of metal coated on an inner wall of a corresponding insulated member and a through hole bounded by the corresponding insulated member. An acute angle between two tangents which pass through a point of intersection of two overlapped insulated members is greater than twenty degrees.

Printed circuit board to prevent electrostatic discharge and manufacturing method thereof

A system for optimizing a current overload protection circuit includes an input device, a data storage device, a central processing device, and a display. The central processing device includes a storage module, a control module, and a calculation module. The storage module stores a VI application therein. The control module receives instructions from the input device and selects virtual electronic components of the current overload protection circuit from the data storage device and connection of the selected electronic components. The current overload protection circuit is completed and run in the VI application; electronic components significantly affecting the maximum protection current are labeled. The calculation module calculates normal distribution samples of the current overload protection circuit based on the labeled electronic components. The display shows whether the current overload protection circuit meets a process capability standard.

System and method for optimizing current overload protection circuit

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.

System and method for analyzing temperature rise of a printed circuit board

A printed circuit board includes a reference layer, at least one first hole defined in the reference layer and adjacent from a first pin in a first column of pins of an electronic component, and at least one second hole defined in the reference layer and adjacent from a second pin of the electronic component. The at least one second hole is defined in the reference layer and opposite to the at least one first hole. The second pin is in a neighboring second column of pins from the first column of pins. A diameter of the at least one first hole is greater than a diameter of the at least one second hole such that a difference in current flowing through the first pin and the second pin is reduced.

A power supply system includes a power supply, a daughterboard, and a motherboard. Output currents of power connectors of the motherboard and impedances of copper foils between every two adjacent power connectors of the motherboard are obtained via simulation. A voltage of one power connector of the motherboard is predetermined. Therefore, desired impedances of copper foils between VRM connectors and corresponding power connectors on the daughter board are determined via calculations, to make currents passing through the power connectors of the motherboard equal to each other.

Power supply system and method

A system for optimizing analog circuit designs includes an input device, a data processing device, and a data storage device. The data processing device includes a selecting module, a calculation module, and a determining module. The selecting module is for receiving input from the input device and selecting electronic components composing the circuit from the data storage device. The calculation module is for calculating average values and standard deviations of each electronic component, generating normal distribution samples of each electronic component, and calculating output voltages of the circuit. The determining module is for determining whether the circuit meets a process capability standard.

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Taipei Hsien, Taiwan

Tsung-Sheng Huang