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UMP-12/2.1-Q12 View Datasheet(PDF) - DATEL Data Acquisition products

Part NameDescriptionManufacturer
UMP-12/2.1-Q12 High-Efficiency, Smaller-Package 25-40 Watt, DC/DC Converters Datel
DATEL Data Acquisition products  Datel
UMP-12/2.1-Q12 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
25-40W, SINGLE OUTPUT DC/DC CONVERTERS
UMP Models
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted. Œ
Input Voltage Range:
"Q12" Models
"D24" Models
"Q48" Models
"D48" Models
Undervoltage Lockout:
"Q12" Models
"D24" Models
"Q48" Models
"D48" Models
Input
10-36 Volts (24V nominal)
18-36 Volts (24V nominal)
18-75 Volts (48V nominal)
36-75 Volts (48V nominal)
9 Volts
17 Volts
17 Volts
34 Volts
Input Current
Input Filter Type 
See Ordering Guide
Pi
Overvoltage Shutdown:
"D24" and "Q12" Models
"D48" and "Q48" Models
40 Volts
80 Volts
Reverse-Polarity Protection
On/Off Control (Pin 5) Ž
VOUT Accuracy (50% load)
Yes (Instantaneous, 6A maximum)
TTL high (or open) = on, low = off
Output
±1%, maximum
Temperature Coefficient
Ripple/Noise (20MHz BW) 
±0.02% per °C
See Ordering Guide
Line/Load Regulation
See Ordering Guide
Efficiency
See Ordering Guide
Isolation Voltage
1500Vdc, minimum
Isolation Capacitance
130pF
Current Limiting
Continuous, auto-recovery
Overvoltage Protection
Zener/transorb clamp, magnetic feedback
Dynamic Characteristics
Transient Response (50% load step) 200µsec max. to ±1.5% of final value
Switching Frequency
165kHz (±10%)
Environmental
Operating Temperature (ambient):
Without Derating
With Derating
Maximum Case Temperature
–40 to +50°C (model dependent)
to +100°C (See Derating Curves)
+100°C
Storage Temperature
Dimensions
–40 to +105°C
Physical
2.04 x 3.04 x 0.55" (51.8 x 77.2 x 14mm)
Shielding
5-sided
Case Connection
Pin 4
Case Material
Zinc with a non-conductive, epoxy-based
black enamel finish and plastic baseplate
Pin Material
Brass, solder coated
Weight
6 ounces (170 grams)
ΠThese converters require a minimum 10% output loading to maintain specified regulation.
Operation under no-load conditions will not damage these devices; however they may not
meet all listed specifications.
 Application-specific input/output filtering can recommended or perhaps added
internally upon request. Contact DATEL Applications Engineering for details.
Ž Applying voltage to the Control pin with no input power applied can damage the converter.
The On/Off function can be replaced with a Sync function. See page 3-48 for more details.
 Listed spec is for input-to-output. Input-to-case and output-to-case isolation is 1000Vdc min.
Absolute Maximum Ratings
Input Voltage:
"Q12/D24" Models
"Q48/D48" Models
Input Reverse-Polarity Protection
Output Overvoltage Protection
5V Outputs
12V Outputs
15V Outputs
Output Current
Storage Temperature
Lead Temperature (soldering, 10 sec.)
44 Volts
88 Volts
Current must be <6A. Brief
duration only. Fusing recommended.
6.8 Volts, limited duration
15 Volts, limited duration
18 Volts, limited duration
Current limited. Max. current and
short-circuit duration are model
dependent.
–40 to +105°C
+300°C
These are stress ratings. Exposure of devices to any of these conditions may adversely
affect long-term reliability. Proper operation under conditions other than those listed in the
Performance/Functional Specifications Table is not implied.
TECHNICAL NOTES
Floating Outputs
Since these are isolated DC/DC converters, their outputs are "floating."
Users may ground either the Common (pin 8) for normal usage or the
positive side (+Output, pin 9) to effectively reverse the output polarity.
Filtering and Noise Reduction
All UMP 25-40 Watt DC/DC Converters achieve their rated ripple and noise
specifications without the use of external input/output capacitors. In critical
applications, input/output ripple and noise may be further reduced by
installing electrolytic capacitors across the input terminals and/or low-ESR
tantalum or electrolytic capacitors across the output terminals. The caps
should be located as close to the power converters as possible. Typical
values are listed in the tables below. In many applications, using values
greater than those listed will yield better results.
To Reduce Input Ripple
"Q12/D24" Models
"Q48/D48" Models
47µF, 50V
10µF, 100V
To Reduce Output Ripple
5V Outputs
12/15V Outputs
47µF, 10V, Low ESR
22µF, 20V, Low ESR
In critical, space-sensitive applications, DATEL may be able to tailor the
internal input/output filtering of these devices to meet your specific require-
ments. Contact our Applications Engineering Group for additional details.
Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. For DATEL UMP
DC/DC Converters, you should use slow-blow type fuses with values no
greater than the following:
VIN Range
"Q12"
"D24"
"Q48"
"D48"
Fuse Value
4A
4A
3A
2A
3
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