參數(shù)資料
型號(hào)： HIP0081AS1
廠(chǎng)商： HARRIS SEMICONDUCTOR
元件分類(lèi)： 外設(shè)及接口
英文描述： Quad Inverting Power Drivers with Serial Diagnostic Interface
中文描述： 1.25 A 4 CHANNEL, BUF OR INV BASED PRPHL DRVR, PZFM15
文件頁(yè)數(shù)： 10/15頁(yè)
文件大?。?/td> 115K
代理商： HIP0081AS1
10
HIP0080, HIP0081The Junction-to-Ambient equivalent to
Equation 3, 3A is:
HIP0080, HIP0081or:
HIP0080, HIP0081Not all Integrated Circuit packages have
a directly definable case temperature because the heat is
spread thru the lead frame to a PC Board which is the
effective heat sink.
Calculation Example 1
HIP0080, HIP0081For the HIP0081,
θ
JC
= 3
o
C/W and the
worst case junction temperature, as an application design
solution, should not exceed 150
o
C. For a given application,
Equation 1 determines the dissipation, P
D
.
HIP0080, HIP0081Assume the package is mounted to a
heat sink having a thermal resistance of 6
o
C/W and, for a
given application, assume the dissipation is 3W and the
ambient temperature (T
A
) is 100
o
C. From Equation 4,
θ
JA
is
9
o
C/W. The solution for junction temperature (T
C
) by
Equation 3 is:
HIP0080, HIP0081T
J
= 100
o
C + 3W x 9
o
C/W = 127
o
C.
Calculation Example 2:
HIP0080, HIP0081Assume for the HIP0080,
θ
JA
= 3
0
o
C/W
mounted on a PC Board with good heat sinking
characteristics. Again, the worst case junction temperature,
as an application design solution, should not exceed
150
o
C. Assume from the application, based on Equation 1,
the dissipation, P
D
= 1.5W. The maximum junction
temperature is known and can be used to determine the
maximum allowable ambient temperature from Equation 5A
as follows:
HIP0080, HIP0081T
A
= 150
o
C - 1.5W x 30
o
C/W = 105
o
C.
Equal Current Loading Solution
HIP0080, HIP0081Many applications may have equal
current loading in the output drivers with equal saturated
turn ON and temperature conditions. As such, a convenient
method to show rating boundaries is to substitute the
dissipation Equation 2 into the junction temperature
Equation 3. For m outputs that are ON and conducting with
equal currents, where I=I
1
=I
2
.....=I
m
, we have the
following solution for dissipation:
2
r
DS ON
)
HIP0080, HIP0081The number of output drivers ON and
conducting (m) may be from 1 to n. (i.e., For all four output
drivers of the HIP0081 ON, m = 4.) Maximum temperature,
dissipation and current ratings must be observed. For a
defined number of conducting Power MOS Output Drivers,
we can plot the results for m devices showing I vs T
C
.
HIP0080, HIP0081Given the HIP0081 as an example,
Figures 6 and Figure 7 illustrate the boundaries for
temperature and current. Figure 6 shows the maximum
current for a single output ON while Figure 7 shows the
maximum current for all four outputs ON with equal current
plotted versus Case Temperature, T
C
. Boundary conditions
relate to the Absolute Maximum Ratings as defined in the
Data Sheet.
T
J
T
A
P
D
θ
JA
×
+
=
(EQ. 5)
(EQ. 5A)
T
A
T
J
P
D
θ
JA
×
–
=
(EQ. 6)
P
D
m
P
k
×
m
I
×
×
=
=
I
T
T
DS ON
–
JC
)
--------------------------------------------------
=
(EQ. 7)
FIGURE 6. HIP0081 MAXIMUM SINGLE OUTPUT CURRENT vs CASE (TAB) TEMPERATURE
50
75
100
125
150
0.0
0.5
1.0
1.5
2.0
2.5
3.0
CASE (HEAT SINK TAB) TEMPERATURE (
o
C)
(1)
(2)
CURVE (1): r
DS(ON)
= 1
CURVE (2): r
DS(ON)
= 0.5
THERMAL RESISTANCE,
θ
JC
= 3
o
C/W
M
S
MAX. +I
OUT(DC)
HIP0080, HIP0081
相關(guān)PDF資料
PDF描述
HIP0082 Quad Power Drivers with Serial Diagnostic Interface
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HIP0081AS2 制造商:Rochester Electronics LLC 功能描述:
HIP0081ASR4560 制造商:Rochester Electronics LLC 功能描述:- Bulk
HIP0081ASR7002 制造商:Harris Corporation 功能描述:
HIP0082 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:Quad Power Drivers with Serial Diagnostic Interface
HIP0082AB 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:Quad Power Drivers with Serial Diagnostic Interface
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