| 摘要 |
The present invention implements a software controlled thermal feedback system for battery charging circuitry in portable devices, specifically in cellular telephones. The charging hardware block is integrated into a mixed-signal analog base-band (ABB) circuit. In addition to standard function controls, integrated within the ABB are silicon temperature sensors used to monitor the temperature of any silicon components integrated on the ABB and detect any temperature change due to thermal heating. The temperature value is passed to the digital base band (DBB) circuit. Here, a microcontroller is programmed to perform power management functions relating to the ABB. Thermal control software, implemented on the DBB microcontroller, monitors the silicon temperature of the ABB and adjusts the power levels on the ABB accordingly to provide a controlled chip temperature.
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