Datasheet

Temperature Derating Curves for UWR 7-15W A-Series
Output Power (Watts)
Ambient Temperature (°C)
D24A and D48A Temperature Derating for 1.5V Output Models
10
9
8
7
6
5
4
3
2
1
0
–400 404550556065707580859095100
VIN = 18V-27V (D24A)
V
IN = 36V-48V (D48A)
V
IN = 18V-30V (D24A)
V
IN = 36V-60V (D48A)
V
IN = 18V-36V (D24A)
V
IN = 36V-75V (D48A)
Output Power (Watts)
Ambient Temperature (°C)
D24A and D48A Temperature Derating for 1.8V Output Models
12
11
10
9
8
7
6
5
4
3
2
1
0
–400 404550556065707580859095100
VIN = 18V-27V (D24A)
V
IN = 36V-48V (D48A)
V
IN = 18V-30V (D24A)
V
IN = 36V-60V (D48A)
V
IN = 18V-36V (D24A)
V
IN = 36V-75V (D48A)
Output Power (Watts)
Ambient Temperature (°C)
15.0
13.5
12.0
10.5
9.0
7.5
6.0
4.5
3
1.5
0
–400 404550556065707580859095100
VOUT = 2.5V, 5V, 12V and 15V
V
OUT = 3.3V
VOUT = 1.8V
VOUT = 1.5V
VOUT = 1.2V
D12A (10-18V) Temperature Derating
Output Power (Watts)
Ambient Temperature (°C)
D24A and D48A Temperature Derating for 3.3V Output Models
14
12
10
8
6
4
2
0
–400 404550556065707580859095100
VIN = 18V-27V (D24A)
V
IN = 36V-48V (D48A)
V
IN = 18V-30V (D24A)
V
IN = 36V-60V (D48A)
V
IN = 18V-36V (D24A)
V
IN = 36V-75V (D48A)
Output Power (Watts)
Ambient Temperature (°C)
15.0
13.5
12.0
10.5
9.0
7.5
6.0
4.5
3
1.5
0
–400 404550556065707580859095100
VIN = 18V-27V (D24A)
V
IN = 36V-48V (D48A)
V
IN = 18V-30V (D24A)
V
IN = 36V-60V (D48A)
V
IN = 18V-36V (D24A)
V
IN = 36V-75V (D48A)
D24A and D48A Temperature Derating for 2.5/5/12/15V Output Models
The thermal performance of A-Series UWR 7-15 Watt DC/DC Converters is
depicted in the derating curves shown below. All devices, when operated at full
load, in still ambient air, over their full specifi ed input voltage range, can safely
operate to T
A maximum. All models, other than the D12A models (10-18 Volt
input range), can operate at higher ambient temperatures if the input range is
narrowed. For example, model UWR-5/3000-D48A can operate safely to +70°C
if the input range is kept between 36 and 48 Volts.
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UWR Models
Single Output, High-Density,
6 Amp/15 Watt
DC/DC Converters
MDC_UWR_7-15.I02 Page 6 of 13