摘要:
The present invention provides a switch power circuit with a backup battery for power supply, comprising an input rectifier module, an PWM switch control module, a transformer module, an output rectifier diode, a negative feedback module, a backup battery, an isolation diode unit and a zener diode; the anode of the output rectifier diode is connected with the positive output end of the transformer unit, the cathode of the output rectifier diode is connected with the cathode of the isolation diode unit, the anode of the isolation diode unit is connected with the anode of the backup battery, the cathode of the backup battery is connected with the negative output end of the transformer module; the cathode of the zener diode is connected between the cathode of the isolation diode unit and the cathode of the output rectifier diode; one end of the negative feedback module is connected with the anode of the zener diode, and the other end of the negative feedback module is connected with the control port of the PWM switch control module. The present invention has beneficial effects of reducing output consumption of switch power supply and increasing conversion efficiency of switch power supply.
摘要:
The present invention includes an integrated circuit package, a ball-grid array integrated circuit package, a method of packaging an integrated circuit, and a method of forming an integrated circuit package. According to one aspect, the present invention provides an integrated circuit package including a substrate including a first surface, a second surface and a plurality of conductors, the first surface includes a plurality of conductive pads adapted to couple with a plurality of corresponding bond pads of a semiconductor die, and the conductors being configured to couple the conductive pads with the second surface; and a plurality of conductive bumps coupled with the second surface of the substrate and electrically coupled with respective conductors, the conductive bumps being formed in an array including a plurality of power bumps and signal bumps, and the signal bumps being individually positioned immediately adjacent at least one power bump. One method of packaging an integrated circuit includes providing a semiconductor die including a plurality of bond pads; providing a package substrate including a plurality of conductive bumps including plural power bumps and plural signal bumps; arranging individual signal bumps to be immediately adjacent at least one power bump; and electrically coupling the bond pads of the semiconductor die with respective conductive bumps.
摘要:
An integrated circuit is mounted on and interconnected with a circuit board by an array of electrically conductive columns. The assembly is fabricated by initially interconnecting the integrated circuit and the circuit board with an array of reflowable electrically conductive solder balls that correspond to the columns respectively. The circuit board is held with the integrated circuit extending downwardly therefrom. Sufficient heat is applied to cause the solder balls to reflow. The integrated circuit is pulled downwardly away from the circuit board by gravity such that the balls are stretched to form the columns, and the assembly is allowed to cool such that the columns solidify. A fixture may be provided against which the integrated circuit abuts after it has moved away from the circuit board by a predetermined distance such that the columns have a precisely determined height.
摘要:
The present invention includes an integrated circuit package, a ball-grid array integrated circuit package, a method of packaging an integrated circuit, and a method of forming an integrated circuit package. According to one aspect, the present invention provides an integrated circuit package including a substrate including a first surface, a second surface and a plurality of conductors, the first surface includes a plurality of conductive pads adapted to couple with a plurality of corresponding bond pads of a semiconductor die, and the conductors being configured to couple the conductive pads with the second surface; and a plurality of conductive bumps coupled with the second surface of the substrate and electrically coupled with respective conductors, the conductive bumps being formed in an array including a plurality of power bumps and signal bumps, and the signal bumps being individually positioned immediately adjacent at least one power bump. One method of packaging an integrated circuit includes providing a semiconductor die including a plurality of bond pads; providing a package substrate including a plurality of conductive bumps including plural power bumps and plural signal bumps; arranging individual signal bumps to be immediately adjacent at least one power bump; and electrically coupling the bond pads of the semiconductor die with respective conductive bumps.
摘要:
There is provided an anodizable aluminum substrate having an increased breakdown voltage. The increase in breakdown voltage is achieved by selecting an appropriate aluminum alloy and appropriate processing parameters. Sealing the anodic film increases the breakdown voltage by decreasing corrosion. A preferred sealant is an epoxy cresol novolac having a low room temperature viscosity that cures to a highly cross-linked polymer.
摘要:
There is provided an anodizable aluminum substrate having an increased breakdown voltage. The increase in breakdown voltage is achieved by selecting an appropriate aluminum alloy and appropriate processing parameters. Sealing the anodic film increases the breakdown voltage by decreasing corrosion. A preferred sealant is an epoxy cresol novolac having a low room temperature viscosity that cures to a highly cross-linked polymer.
摘要:
The present invention includes an integrated circuit package, a ball-grid array integrated circuit package, a method of packaging an integrated circuit, and a method of forming an integrated circuit package. According to one aspect, the present invention provides an integrated circuit package including a substrate including a first surface, a second surface and a plurality of conductors, the first surface includes a plurality of conductive pads adapted to couple with a plurality of corresponding bond pads of a semiconductor die, and the conductors being configured to couple the conductive pads with the second surface; and a plurality of conductive bumps coupled with the second surface of the substrate and electrically coupled with respective conductors, the conductive bumps being formed in an array including a plurality of power bumps and signal bumps, and the signal bumps being individually positioned immediately adjacent at least one power bump. One method of packaging an integrated circuit includes providing a semiconductor die including a plurality of bond pads; providing a package substrate including a plurality of conductive bumps including plural power bumps and plural signal bumps; arranging individual signal bumps to be immediately adjacent at least one power bump; and electrically coupling the bond pads of the semiconductor die with respective conductive bumps.
摘要:
A flat, thin decoupling capacitor is disposed inside an integrated circuit device in a coplanar relationship with a semiconductor chip and a bonding element. When connected to the power and ground plane of a device substrate or in a leadframe device, the decoupling capacitor is positioned close to the semiconductor chip to substantially reduce ground bounce and crosstalk from the semiconductor chip. When the decoupling capacitor is positioned to locate the semiconductor chip between itself and the device substrate or leadframe device, the decoupling capacitor shields electromagnetic interference from the semiconductor chip.
摘要:
There is disclosed an adhesively sealed electronic package in which a compensation apparatus is provided for excess adhesive. As a result, excess adhesive does not extend beyond the package perimeter, squeeze-out, or travel along the inner lead fingers interfering with wire bonding. The compensation is a chamfer on the peripheral edges and/or interior edges of the package base component and cover component.
摘要:
There is provided an electronic package assembly having a die attach paddle bonded to the package base by a compliant adhesive. A recessed channel formed in the base is partially overlapped by the die attach paddle. During package sealing, excess adhesive accumulates in the recessed channel, eliminating bridging of the adhesive to the leadframe.