AV60C-048L-050F06-8 Emerson Network Power, AV60C-048L-050F06-8 Datasheet - Page 24

• Manufacturer Part Number: AV60C-048L-050F06-8
• Description: CONV DC-DC 30W 48VIN 5V POS-EN
• Manufacturer: Emerson Network Power
• Series: AV60Cr
• Type: Point of Load (POL) Non-Isolatedr

Specifications of AV60C-048L-050F06-8

• Output: 5V
• Number Of Outputs: 1
• Power (watts): 30W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: 9-DIP Module, 1/2 Brick
• 1st Output: 5 VDC @ 6A
• Size / Dimension: 2.40" L x 2.28" W x 0.50" H (61mm x 57.9mm x 12.7mm)
• Power (watts) - Rated: 30W
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 87%
• Approvals: CSA, EN, UL
• 3rd Output: -
• 2nd Output: -
• Other names: AV60C-048L050F068

TEL:
FAX:
USA
1-760-930-4600
1-760-930-0698
Basic Thermal Model
There is another approach to analyze module
thermal performance, to model case to ambi-
ent thermal resistance (°C/w), for these mod-
ule. This presentation method is especially
useful when considering heat sinks. The fol-
lowing equation can be used to calculate the
total thermal resistance .
Where R
In this model, P
to current flow, voltage drop, and electrical
resistance, respectively, in Ohm's law, as
shown in Figure 32. Also, ∆T
the difference between the module case tem-
perature (T
(T
Where T
For AV60C-30W Series 5V output converters,
the module's thermal resistance values versus
air velocity have been determined experimen-
tally and shown in figure 33. The highest values
on each curve represents the point of natural
convection.
Figure 33 is used for determining thermal per-
formance under various conditions of airflow
and heat sink configurations.
For example, how to determine the allow-
able minimum airflow to heat sink combina-
Basic Thermal Model
A
Fig.32 Basic Thermal Resistance Model
).
R
∆T
rise;
P
∆T
T
A
D
CA
Thermal
BMPM
C
C
Resistance
is the module power dissipation.
is the inlet ambient temperature.
,
,
= ∆T
C
CA
max
max
is the module case temperature;
C
) and the inlet ambient temperature
is the module thermal resistance;
is the maximum case temperature
= T
C
,
D
max
C
, ∆T
˘ T
/ P
C, max
A A
A A
A
D
V V
V V
Europe
44-(0)1384-842-211
44-(0)1384-843-355
BMPM
6 6
6 6
3 3
3 3
, and R
0 0
0 0
6 6
6 6
P
C C
D
C C
V V
V V
C, max
D D
D D
H H
H H
C C
C C
a a
a a
CA
l l
l l
is defined as
t t
t t
f f
f f
o o
o o
-
-
are equals
B B
B B
7 7
7 7
r r
r r
5 5
5 5
i i
i i
c c
c c
V V
V V
k k
k k
D D
D D
S S
S S
C C
C C
i i
i i
z z
z z
I I
Asia
852-2437-9662
852-2402-4426
I I
n n
n n
e e
e e
p p
p p
D D
D D
u u
u u
C C
C C
t t
tions necessary for a module under a
desired Tc and a certain condition?
Although the maximum case temperature for
the AV60C-30W Series converters is 100° C,
you can improve module reliability by limiting
Tc,max to a lower value. How to decide? For
example, what is the allowable minimum airflow
for AV60C-048L-050F06 heat sink combina-
tions at desired Tc of 80 °C?
The working condition is as following:
Determine P
Then solve R
determine air velocity from figure 33:
If no heat sink:
If 1/4 in. heat sink:
If 1/2 in. heat sink:
If 1 in. heat sink:
If 1 1/2 in. heat sink:
t t
, ,
, ,
-
-
D D
D D
3 3
3 3
Resistance Curves; Either Orientation
V
P
v > 1.0 m/s (200 ft./min.)
v > 0.8 m/s (160 ft./min.)
v > 0.5m/s (100 ft./min.)
v > 0.3 m/s (60 ft./min.)
v > 0.25 m/s (50 ft./min.)
0 0
C C
0 0
C C
R
R
R
I
D
W W
W W
Fig.33 Case-to-Ambient Thermal
CA =
CA =
CA =
8
7
6
5
4
3
2
1
0
= 48 V, I
C C
C C
= 3.7 W
0
O O
o o
O O
o o
n n
∆T
n n
u u
www.astec.com
u u
0.25
(50)
T
80
v v
v v
t t
t t
C
D
C
p p
e e
p p
CA
e e
( Fig.24. )
,
O
u u
r r
u u
r r
(100)
max
0.5
t t
T
70
t t
= 5 A, T
t t
t t
AIR VELOCITY, ms
e e
e e
A
r r
r r
/ P
s s
s s
(150)
0.75
P
3.7
D
D
A
(200)
1
= 70 °C
2.7°C/W
NO HEAT SINK
1/4 in. HEAT SINK
1/2 in. HEAT SINK
1 in. HEAT SINK
11/2 in. HEAT SINK
-1
1.25
(250)
(ft./min.)
(300)
1.5
1.75
(350)
(400)
2
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