UWR-1.5/6000-D12A 查看數據表（PDF） - DATEL Data Acquisition products
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UWR-1.5/6000-D12A Datasheet PDF : 8 Pages
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9-15W, SINGLE OUTPUT DC/DC CONVERTERS
UWR Models
Start-Up Threshold and Undervoltage Shutdown
Under normal start-up conditions, devices will not begin to regulate until the
ramping-up input voltage exceeds the Start-Up Threshold Voltage (35V for
"D48A" models). Once operating, devices will not turn off until the input volt-
age drops below the Undervoltage Shutdown/Lockout limit (34V for "D48A"
models). Subsequent re-start will not occur until the input is brought back
up to the Start-Up Threshold. This built-in hysteresis obviously avoids any
indeterminate on/off situations at a single voltage.
Start-Up Time
The VIN to VOUT Start-Up Time is the interval between the time at which
a ramping input voltage crosses the turn-on threshold point and the fully-
loaded output voltage enters and remains within its specified accuracy band.
Actual measured times will vary with input source impedance, external input
capacitance, and the slew rate and final value of the input voltage as it
appears to the converter.
The On/Off to VOUT Start-Up Time assumes the converter is turned off via
the On/Off Control with the nominal input voltage already applied to the
converter. The specification defines the interval between the time at which the
converter is turned on and the fully-loaded output voltage enters and remains
within its specified accuracy band.
TEMPERATURE DERATING
The thermal performance of A-Series UWR 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 specified input voltage range, can
safely operate to +60°C. 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. Contact DATEL's
Applications Engineering Group if you need additional details.
D12A (10-18V) Temperature Derating Curves
15.0
13.5
12.0
VOUT = 5V, 12V and 15V
10.5
9.0
7.5
VOUT = 3.3V
6.0
4.5
3
1.5
0
–40 0 40 45 50 55 60 65 70 75 80 85 90 95 100
Ambient Temperature (°C)
D24A Temperature Derating Curves for 5V, 12V and 15V Output Models
15.0
13.5
VIN = 18V-27V
12.0
10.5
9.0
VIN = 18V-30V
7.5
VIN = 18V-36V
6.0
4.5
3
1.5
0
–40 0 40 45 50 55 60 65 70 75 80 85 90 95 100
Ambient Temperature (°C)
D24A and D48A Temperature Derating Curves for 3.3V Output Models
14
VIN = 18V-27V (D24A)
VIN = 36V-48V (D48A)
12
10
VIN = 18V-30V (D24A)
8
VIN = 36V-60V (D48A)
6
VIN = 18V-36V (D24A)
VIN = 36V-75V (D48A)
4
2
0
–40 0 40 45 50 55 60 65 70 75 80 85 90 95 100
Ambient Temperature (°C)
D48A Temperature Derating Curves for 5V, 12V and 15V Output Models
15.0
13.5
VIN = 36V-48V
12.0
10.5
9.0
VIN = 36V-60V
7.5
VIN = 36V-75V
6.0
4.5
3
1.5
0
–40 0 40 45 50 55 60 65 70 75 80 85 90 95 100
Ambient Temperature (°C)
5
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