摘要:
A method of analyzing press-forming of a press-forming material including analyzing press-forming, analyzing springback and analyzing a change in shape of the press-forming material. The analyzing press-forming may include setting an initial temperature distribution for the heated press-forming material and performing a press-forming analysis by combining temperature analysis and structural analysis to obtain shape information, temperature distribution, stress distribution, and strain distribution. The analyzing springback may occur with and without consideration of contact heat transfer between a press-forming tool and the press-forming material. The method may further include modifying the temperature distribution obtained in the analyzing springback and then re-analyzing the change in shape of the press-forming material. The analyzing the change in shape may be performed until a temperature distribution in the press-forming material is within the range of ±5° C.
摘要:
A method includes receiving input information related to devices of an integrated circuit. A first simulation of the integrated circuit is performed over a first time period. Average temperature changes of the devices over the first time period are calculated. A second simulation of the integrated circuit is performed over a second time period using the average temperature changes of the devices. The first simulation and the second simulation are executed by a processor unit.
摘要:
A method for printed circuit board design of temperature sensitive components includes a scrub tool receiving a list of part numbers for electronic components of a printed circuit board assembly (“PCBA”). The scrub tool sends one or more queries for finding temperature and time limits of the electronic components to a database. A mapping tool receives a selection of one or more part numbers responsive to the one or more queries, wherein the selection is responsive to the temperature and time limits. The mapping tool sends a data structure to a physical design tool which is configured with physical design data for generating a graphic representation of the PCBA. The data structure from the mapping tool provides the received selection of one or more part numbers and configures the physical design tool to highlight components having part numbers of the selection on the PCBA graphic representation.
摘要:
Aspects of the invention relate to techniques for estimating power and thermal profiles for an integrated circuit design. With various implementations of the invention, a group of devices is identified in a netlist based on information of the group of devices. The netlist may be a schematic netlist or a layout netlist extracted from a layout design. Power consumption information for the group of devices is determined based on device parameters for the group of devices and a lookup table. The determined power consumption information is then associated with layout location information. A thermal profile may then be estimated based on the power consumption information.
摘要:
A method of designing a circuit includes receiving a circuit design, and determining a temperature change of at least on back end of line (BEOL) element of the circuit design. The method further includes identifying at least one isothermal region within the circuit design; and determining, using a processor, a temperature increase of at least one front end of line (FEOL) device within the at least one isothermal region. The method further includes combining the temperature change of the at least one BEOL element with the temperature change of the at least one FEOL device, and comparing the combined temperature change with a threshold value.
摘要:
A circuit design scheme routes wires based on temperature. In particular, temperature conditions along a prospective route are taken into account when determining whether to use that route for a wire. For example, a route can be selected from among a set of prospective routes based on which route is associated with the “smoothest” temperature gradient. Here, preference may be given to the route or routes having the smallest amount of temperature variation along the route.
摘要:
Among other things, one or more systems and techniques for analyzing a tiered semiconductor structure are provided. One or more segments are defined for the tiered semiconductor structure. The one or more segments are iteratively evaluated during electrical simulation while taking into account thermal properties to determine power metrics for the segments. The power metrics are used to determine temperatures generated by integrated circuitry within the segments. Responsive to a segment having a temperature above a temperature threshold, a temperature action plan, such as providing an alert or inserting one or more thermal release structures into the segment, is implemented. In this way, the one or more segments are iteratively evaluated to identify and resolve thermal and reliability issues.
摘要:
A system for and method of modeling thermal performance characteristics of HVAC components in a building uses the building power or other meter to measure power consumed by the components. The models are used to test the components, preferably during off hours, to ensure proper and efficient operation. Preferably, the testing software is written in a high-level interpretive language that is independent of the HVAC component being modeled. The models are adaptively maintained by periodically ensuring that their measured output matches the predicted output. When the two do not match, the model parameters are updated. These models can also be used to generate reports comparing costs and cost savings for different temperature and other environmental settings within selected zones in the building.
摘要:
A method for determining an area of a region for receiving a heat sink on a surface of a chip-supporting substrate is disclosed. The method can include determining, in response to a specified voltage drop associated with substrate wiring, a first set of wiring cross-sectional areas and corresponding lengths that satisfy the specified voltage drop. The method can also include determining, by selecting, in response to a specified thermal resistance associated with substrate wiring and insulating layers, from the first set, a second set of wiring cross-sectional areas and corresponding lengths that satisfy the specified thermal resistance. The method can also include selecting, from a set of placement areas corresponding to the second set of wiring cross-sectional areas and corresponding lengths, a heat sink placement area that is greater than a lower size for a placement area and less than an upper size for a placement area.
摘要:
A method to determine the heat transfer through some enveloping surface is being presented, where a convective as well as a radiation heat-transfer is considered.