參數(shù)資料
型號(hào)： AHF2815DF
廠商： International Rectifier
英文描述： 28V Input, Single and Dual Output
中文描述： 28V輸入，單路和雙路輸出
文件頁(yè)數(shù)： 15/17頁(yè)
文件大?。?/td> 148K
代理商： AHF2815DF
www.irf.com
15
AHF28XX Series
Application Information
Connecting the enable input (Pin 1) to input common (Pin 7)
will cause the converter to shut down. It is recommended
that the enable pin be driven by an open collector device
capable of sinking at least 400 μA of current. The open
circuit voltage of the enable input is 15 ±1 VDC. If the inhibit
function is not used, this input can be left unconnected
because it is internally pulled-up.
Thermal Management
Assuming that there is no forced air flow, the package tem-
perature rise above ambient (
T) may be calculated using
the following expression:
where A = the effective surface area in square inches (in-
cluding heat sink if used), P = power dissipation in watts.
The total surface area of the AHF package is 4.9 square
inches. If a worse case full load efficiency of 78% is as-
sumed, then the case temperature rise can be calculated
as follows:
Hence, if T
= +25
°
C, the DC/DC converter case
temperature will be approximately 100
°
C if no heat sink
or air flow is provided.
Inhibit Function
T
≈
80 A
–0.7
p
0.85
(
°
C)
W
Eff
P
P
OUT
4
1
78
.
1
12
1
1
=
=
=
T = 80 (4.9)
-0.7
(3.4)
0.85
= 74
°
C
To calculate the heat sink area required to maintain a
specific case temperature rise, the above equation may
be manipulated as follows:
PKG
Α
Ρ
Τ
43
.
85
.
80
A
HEAT SINK
=
As an example, if a maximum case temperature rise of
50°C rise above ambient is desired, then the required
effective heat sink area is:
2
43
.
85
.
.
75
.
9
)
80
50
in
HEATSINK
=
=
Α
相關(guān)PDF資料
PDF描述
AHF2815S 28V Input, Single and Dual Output
AHF2815SF 28V Input, Single and Dual Output
AHF2812D 28V Input, Single and Dual Output
AHF2812DF Circular Connector; No. of Contacts:43; Series:MS27468; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:25-43 RoHS Compliant: No
AK04D300-SOT 4 Pin to 14 Pin DIP Adapters
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AHF2815DF/CH 制造商:International Rectifier 功能描述:Module DC-DC 2-OUT 15V/-15V 0.72A 12W 8-Pin AHF 制造商:International Rectifier 功能描述:DC/DC CONVERTER, FLANGED, CLASS H - Bulk
AHF2815DF/ES 制造商:International Rectifier 功能描述:DC/DC CONVERTER, FLANGED, ENVIRONMENTAL SCREENING - Bulk
AHF2815DF/ES-MSTR 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC
AHF2815DF/ES-SLV 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC
AHF2815DF/HB 制造商:International Rectifier 功能描述:Module DC-DC 2-OUT 15V/-15V 0.72A 12W 8-Pin AHF 制造商:International Rectifier 功能描述:DC/DC CONVERTER, FLANGED, CLASS H EQUIVALENT, NO ELEM EVAL - Bulk
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