HW012A0Y1-S Lineage Power, HW012A0Y1-S Datasheet - Page 16

• Manufacturer Part Number: HW012A0Y1-S
• Description: CONVERTER DC/DC 1.8V 22W OUT SMD
• Manufacturer: Lineage Power
• Series: HWr
• Type: Isolated with Remote On/Offr

Specifications of HW012A0Y1-S

• Output: 1.8V
• Number Of Outputs: 1
• Power (watts): 22W
• Mounting Type: Surface Mount
• Voltage - Input: 36 ~ 75V
• Package / Case: 18-DIP SMD Module (6 Leads)
• 1st Output: 1.8 VDC @ 12A
• Size / Dimension: 1.86" L x 1.16" W x 0.34" H (47.2mm x 29.5mm x 8.6mm)
• Power (watts) - Rated: 22W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 85%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: No

Data Sheet
June 26, 2009
Lineage Power
Thermal Considerations
The power modules operate in a variety of thermal environ-
ments; however, sufficient cooling should be provided to help
ensure reliable operation of the unit. Heat is removed by con-
duction, convection, and radiation to the surrounding environ-
ment. Proper cooling can be verified by measuring drain pin
Q203 at the position indicated in Figure 43.
The temperature at Q203 drain pins should not exceed 115
°C. The output power of the module should not exceed the
rated power for the module
(VO, set x IO, max).
Although the maximum operating ambient temperature of the
power modules is 85 °C, you can limit this temperature to a
lower value for extremely high reliability.
Figure 43. HW 6.6A-12A-Series Temperature
Heat Transfer via Convection
Increasing airflow over the module enhances the heat trans-
fer via convection. Figures 44—48 show the maximum cur-
rent that can be delivered by various modules versus local
ambient temperature (TA) for natural convection through 2 m/
s (400 ft./min.).
Systems in which these power modules may be used typi-
cally generate natural convection airflow rates of 0.3 ms
(60 ft./min.) due to other heat-dissipating components in the
system. Therefore, the natural convection condition repre-
sents airflow rates of up to 0.3 ms
ure 44 is shown in the following example.
Example
What is the minimum airflow necessary for a HW010A0F1
operating at VIN = 48 V, an output current of 10 A, and a
maximum ambient temperature of 75 °C.
Solution
Given:
Determine airflow (v) (Use Figure 44.):
Attach thermocouple
to drain lead.
VIN = 48V
IO = 12 A
TA = 75 °C
v = 0.5 m/s (100 ft./min.)
Measurement Location (Top View).
AIRFLOW
–1
(60 ft./min.). Use of Fig-
HW006/010/012 Series Power Modules; dc-dc Converters
36-75 Vdc Input; 1.2 Vdc to 5 Vdc Output; 6.6A to 12A
–1
Figure 44. Derating Curves for HW010A0F1
Figure 45. Derating Curves for HW006A6A1
Figure 46. Derating Curves for HW010A0G1
12
10
8
7
6
5
4
3
2
1
0
11
10
8
6
4
2
0
9
8
7
6
5
4
3
2
1
0
20
20
20
30
30
30
(VO = 3.3 V) in Transverse Orientation
(VI = 48 Vdc).
(VO = 5.0 V) in Transverse Orientation
(VI = 48 Vdc).
(VO = 2.5 V) in Transverse Orientation
(VI = 48 Vdc).
NATURAL CONVECTION
NATURAL CONVECTION
AMBIENT TEMPERATURE, T
AMBIENT TEMPERATURE, T
40
40
40
2.0 m/s (400 ft./min.)
1.0 m/s (200 ft./min.)
0.5 m/s (100 ft./min.)
2.0 m/s (400 ft./min.)
1.0 m/s (200 ft./min.)
0.5 m/s (100 ft./min.)
Ambient Temperature T
NATURAL CONVECTION
50
50
50
2.0 m/s (400 ft./min.)
1.0 m/s (200 ft./min.)
0.5 m/s (100 ft./min.)
60
60
60
A
(˚C)
A
A
(˚C)
(˚C)
70
70
70
80
80
80
90
90
90
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