학술논문

Maximum operating voltage (VMAX) limit for SOCs in thin form factor mobile devices with touch sensitive displays
Document Type
Conference
Source
2015 IEEE International Reliability Physics Symposium Reliability Physics Symposium (IRPS), 2015 IEEE International. :3C.2.1-3C.2.5 Apr, 2015
Subject
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Power, Energy and Industry Applications
System-on-chip
Reliability
Mathematical model
Thermal factors
Thermal analysis
Mobile handsets
Approximation methods
Mobile
Operating Voltage
SOCs
Thermal Design
Thin Form Factor
Language
ISSN
1541-7026
1938-1891
Abstract
Proximity to the touch sensitive display in thin form factor mobile devices puts a stringent upper limit on the temperature (and hence the V MAX ) at which the SOC may be operated, making the industrial design sometimes limited by the thermals, rather than reliability. The tradeoff between the V MAX and the distance between the SOC and the touch display (Z ht ) is systematically explored. A simple analytical framework which addresses tradeoffs among different key parameters of interest (both thermal and reliability) is developed. It is emphasized that by carefully optimizing the time for which the SOC operates at V MAX , and/or by de-emphasizing SOC domain areas operating under lower V MAX , the Z ht may be scaled down, enabling efficient thermal solution design, without compromising performance, while maintaining constant reliability risk.