Datasheet

TMS320C28346, TMS320C28345, TMS320C28344
TMS320C28343, TMS320C28342, TMS320C28341
www.ti.com SPRS516D –MARCH 2009–REVISED AUGUST 2012
8 Thermal and Mechanical Data
Table 8-1 and Table 8-2 show the thermal data.
The mechanical package diagrams that follow the tables reflect the most current released mechanical data
available for the designated devices.
Table 8-1. Thermal Model 179-Ball ZHH Results
AIR FLOW
PARAMETER 0 lfm 150 lfm 250 lfm 500 lfm
θ
JA
[°C/W] High k PCB 40.8 32.4 31.0 29.1
Ψ
JT
[°C/W] 0.4 0.5 0.6 0.8
Ψ
JB
21.0 20.4 20.2 19.9
θ
JC
10.3
θ
JB
21.2
Table 8-2. Thermal Model 256-Ball ZFE Results
AIR FLOW
PARAMETER 0 lfm 150 lfm 250 lfm 500 lfm
θ
JA
[°C/W] High k PCB 30 21.8 20.6 19.1
Ψ
JT
[°C/W] 1.24 2.63 3.15 4.05
Ψ
JB
14 13.6 13.5 13.4
θ
JC
14
θ
JB
13.9
Copyright © 2009–2012, Texas Instruments Incorporated Thermal and Mechanical Data 165
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