參數(shù)資料
型號: pentium III processor
廠商: Intel Corp.
英文描述: 32 bit Processor Mobile Module(32 位帶移動模塊處理器)
中文描述: 32位處理器的移動模塊(32位帶移動模塊處理器)
文件頁數(shù): 51/67頁
文件大小: 834K
代理商: PENTIUM III PROCESSOR
Pentium
III Processor Mobile Module MMC-2
Featuring Intel
SpeedStep
Technology
243356-005
Datasheet
45
Equation 14.
(The nearest standard 1% value is 66.5 k
. The example will continue with R2= 66.5 k
.)
Rearranging
Equation 8
to solve for C9 yields
Equation 15
.
Equation 15.
Now a value for C9 can be calculated.
Equation 16.
C 9= 0.354
μ
F
(A close standard value of 0.33
μ
F will yield a t_delay of 466.0
μ
S.)
The ramp-up time, t_ramp, is defined as shown in
Equation 17
.
Equation 17.
If M1 has a VGS(sat) of -2.4V, then
Equation 18
applies.
Equation 18.
t_ramp = 948.8
μ
S
The maximum current during the power-up ramp is shown in
Equation 19
below.
Equation 19.
If the total capacitance, Ctotal on the V_DC bus, is 119.4
μ
F, then see
Equation 20
below.
Equation 20.
Imax = 0.944A
From the values assumed and calculated, t_delay = 466.0
μ
S, t_ramp = 949.0
μ
S, and Imax = 944.0
mA.
R2
Vg R16
V_DC Vg
,
R2
66.67 K
=
C9
t_delay
R2 ln 1
Vt
V_DC
Vg
t_ramp
R2 C9
ln 1
.
Vsat
Vgs
t_delay
Imax
Ctotal
t
v
d
d
CtotalV_DC
t_ramp
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