Intel E1400 Design Guidelines - Page 45
Voltage Regulator Thermal Management
UPC - 683728187330
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Balanced Technology Extended (BTX) Thermal/Mechanical Design Information Figure 5-1. Effective TMA Fan Curves with Reference Extrusion 0.400 0.350 0.300 0.250 0.200 0.150 0.100 0.050 0.000 0.0 Reference TMA @ 5300 RPM Reference TMA @ 2500 RPM Reference TMA @ 1200 RPM 5.0 10.0 15.0 20.0 25.0 30.0 35.0 Airflow (cfm) 5.1.4 Voltage Regulator Thermal Management The BTX TMA is integral to the cooling of the processor voltage regulator (VR). The reference design TMA will include a flow partitioning device to ensure an appropriate airflow balance between the TMA and the VR. In validation the need for this component will be evaluated. The BTX thermal management strategy relies on the Thermal Module to provide effective cooling for the voltage regulator (VR) chipset and system memory components on the motherboard. The Thermal Module is required to have features that allow for airflow to bypass the heatsink and flow over the VR region on both the primary and secondary sides of the board. The following requirements apply to VR cooling. Thermal and Mechanical Design Guidelines 45