参数资料
型号: EX256-TQ100
厂商: Microsemi SoC
文件页数: 18/48页
文件大小: 0K
描述: IC FPGA ANTIFUSE 12K 100-TQFP
标准包装: 90
系列: EX
逻辑元件/单元数: 512
输入/输出数: 81
门数: 12000
电源电压: 2.3 V ~ 2.7 V
安装类型: 表面贴装
工作温度: 0°C ~ 70°C
封装/外壳: 100-LQFP
供应商设备封装: 100-TQFP(14x14)
eX Family FPGAs
Revision 10
1-21
Thermal Characteristics
The temperature variable in the Designer software refers to the junction temperature, not the ambient
temperature. This is an important distinction because the heat generated from dynamic power
consumption is usually hotter than the ambient temperature. EQ 1, shown below, can be used to
calculate junction temperature.
EQ 1
Junction Temperature =
T + Ta(1)
Where:
Ta = Ambient Temperature
T = Temperature gradient between junction (silicon) and ambient = ja * P
P = Power
ja = Junction to ambient of package. ja numbers are located in the "Package Thermal Characteristics"
section below.
Package Thermal Characteristics
The device junction-to-case thermal characteristic is
jc, and the junction-to-ambient air characteristic is
ja. The thermal characteristics for ja are shown with two different air flow rates. jc is provided for reference.
The maximum junction temperature is 150
C.
The maximum power dissipation allowed for eX devices is a function of
ja. A sample calculation of the
absolute maximum power dissipation allowed for a TQFP 100-pin package at commercial temperature
and still air is as follows:
Package Type
Pin Count
jc
ja
Units
Still Air
1.0 m/s
200 ft/min
2.5 m/s
500 ft/min
Thin Quad Flat Pack (TQFP)
64
12.0
42.4
36.3
34.0
C/W
Thin Quad Flat Pack (TQFP)
100
14.0
33.5
27.4
25.0
C/W
Maximum Power Allowed
Max. junction temp. (
C) Max. ambient temp. (C)
ja(C/W)
------------------------------------------------------------------------------------------------------------------------------------------
150
C70C
33.5
C/W
-------------------------------------
2.39W
=
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