This publication describes techniques and apparatuses that decrease the temperature variation in a cavity created by an interposer that stacks two or more boards inside a smartphone. When operating electrical components, heat generation is inevitable. A way to minimize temperature variation is by embracing and managing a safe rise in temperature in and/or around the electrical components inside the cavity of the interposer. A safe rise in temperature may be a temperature between +25°C and +85°C (e.g., +55°C). That way, when the smartphone shifts from an idle state to normal operation, the cavity of the interposer and the electrical components inside the cavity do not experience a large temperature variation—the cavity is pre-warmed. Less temperature variation enables the smartphone to use less complex software and lookup tables that are limited to one temperature (e.g., +55°C) instead of a wide range of temperatures, such as from -40°C to +85°C. Limiting temperature variation by keeping the cavity of the interposer above room temperature and below the maximum temperature offers consistent smartphone performance, better space utilization, and decreased manufacturing and/or operational cost.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.