®
®
INNOVATION and EXCELLENCE
Single Output
UCP Models
UL/EN Approved, "Half-Brick"
40-75 Watt, DC/DC Converters
Features
■
■
Standard "half-brick" configuration
UL/EN60950 safety approvals
(BASIC insulation)
mark for "D48" models
(36-75V inputs)
Fully isolated, 1500Vdc guaranteed
Output voltages: 3.3, 5, 12 or 15 Volts
V
IN
ranges: 10-18V, 18-36V, 36-75V
Full 40-75 Watt output power
Reliable SMT-on-pcb construction
Input under and overvoltage shutdown
Output current limiting and
short-circuit protection
On/off, V
OUT
trim and sense functions
Modifications and customs for OEM’s
■
■
■
■
■
■
■
■
■
■
The high efficiency, low noise and long-term reliability that defines DATEL
DC/DC Converters now comes to you in the standard "half-brick" configuration (2.3"
x 2.4" x 0.52"). All models in our new UCP Series meet UL/EN60950 safety require-
ments, including each European country’s deviations. A CB Test Certificate/Report
is available. All models have BASIC insulation; guarantee 1500Vdc isolation; and
because they are designed with Class B thermal insulation, satisfy all safety require-
ments over their full operating temperatures.
UCP Models are designed for demanding telecom, datacom and networking
applications. Their "semi-synchronous-rectifier" design (400kHz switching) achieves
impressive efficiencies (up to 88%). Output voltages are 3.3, 5, 12 or 15 Volts. Input
voltage ranges are 10-18V ("D12" models), 18-36V ("D24" models) or 36-75V ("D48"
models). "D48" models meet the Low Voltage Directive (LVD) and carry the CE mark.
For high reliability and affordability, DATEL utilizes high-speed automatic assem-
bly to construct the UCP’s proven SMT-on-pcb designs. All models have been rigor-
ously qualified (including a 500-hour life test) and EMC characterized. Devices are
housed in metal cases (with non-conductive baseplates) that incorporate threaded
inserts for add-on heat sinks and/or pcb mounting.
UCP’s feature input pi filters, input undervoltage and overvoltage lockout, output
current limiting, short-circuit protection, and thermal shutdown. Additionally, all
devices have output trim capability and an on/off control pin that can be ordered
with either polarity or replaced with a sync function. We can easily modify standard-
product UCP’s to meet your application-specific requirements.
+V
IN
(4)
SWITCH
CONTROL
10Ω
+V
OUT
(5)
+SENSE
(6)
–V
OUT
(9)
10Ω
–SENSE
(8)
–V
IN
(1)
PWM
CONTROLLER
UVLO & OVLO
COMPARATORS
OPTO
ISOLATION
REFERENCE &
ERROR AMP
TRIM
(7)
ON/OFF
CONTROL
(3)
➀
The On/Off Control function can be ordered with either positive (standard) or negative polarity.
It can also be replaced with an optional Sync function.
➁
12V- and 15V-output models have a standard forward architecture in which this FET is replaced
with a Schottky diode.
Figure 1. Simplified Schematic
DATEL, Inc., Mansfield, MA 02048 (USA) · Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: sales@datel.com · Internet: www.datel.com
XCP Series
4 0 - 7 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S
Performance Specifications and Ordering Guide
Output
Model
UCP-3.3/12-D12
UCP-3.3/15-D24
UCP-3.3/15-D48
UCP-5/10-D12
UCP-5/12-D24
UCP-5/12-D48
UCP-5/15-D48
UCP-12/4.2-D12
UCP-12/5-D24
UCP-12/5-D48
UCP-15/3.3-D12
UCP-15/4-D24
UCP-15/4-D48
➀
Input
Regulation (Max.)
Line
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
V
OUT
(Volts)
3.3
3.3
3.3
5
5
5
5
12
12
12
15
15
15
I
OUT
(Amps)
12
15
15
10
12
12
15
4.2
5
5
3.3
4
4
P
OUT
(W)
40
50
50
50
60
60
75
50
60
60
50
60
60
R/N (mVp-p)
➁
Typ.
75
75
75
75
75
75
75
75
75
75
100
100
100
Max.
150
150
150
120
120
120
120
120
120
120
150
150
150
Load
➂
±1.0%
±1.0%
±1.0%
±1.0%
±1.0%
±1.0%
±1.0%
±1.0%
±1.0%
±1.0%
±1.0%
±1.0%
±1.0%
V
IN
Nom.
(Volts)
12
24
48
12
24
48
48
12
24
48
12
24
48
Range
(Volts)
10-18
18-36
36-75
10-18
18-36
36-75
36-75
10-18
18-36
36-75
10-18
18-36
36-75
I
IN
➃
(mA/A)
200/4.2
75/2.6
75/1.3
200/5.2
75/3
75/1.5
100/1.9
100/5
50/3
50/1.5
100/4.9
50/2.9
50/1.5
Efficiency
Min.
81%
81%
81%
82%
85%
84%
84.5%
85%
84%
86%
85%
86%
86%
Typ.
83%
83%
83%
84%
87%
86%
86%
87%
86%
88%
87%
88%
88%
Package
(Case,
Pinout)
C12, P17
C12, P17
C12, P17
C12, P17
C12, P17
C12, P17
C12, P17
C12, P17
C12, P17
C12, P17
C12, P17
C12, P17
C12, P17
➀
Typical at T
A
= +25°C under nominal line voltage and full-load conditions unless otherwise noted.
➁
Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specified with external
33µF, low-ESR, input capacitors and 10µF tantalum in parallel with 1µF ceramic output capacitors.
➂
10% to 100% load step.
➃
Nominal line voltage, no-load/full-load conditions.
PA R T N U M B E R S T R U C T U R E
U CP
-
5
/
12
-
D48 N
LX
Output Configuration:
U
= Unipolar
Standard Half-Brick Package
Nominal Output Voltage:
3.3, 5, 12 or 15 Volts
See Optional Functions
Input Voltage Range:
D12
= 10-18 Volts (12V nominal)
D24
= 18-36 Volts (24V nominal)
D48
= 36-75 Volts (48V nominal)
Maximum Output Current
in Amps
Optional Functions
UCP 40-75 Watt DC/DC's are designed with an On/Off Control
function, with either positive polarity (no suffix) or negative polarity
("N" suffix), in the pin 3 position.
Blank
N
L1
L2
On/Off Control function (positive polarity) on pin 3
On/Off Control function (negative polarity) on pin 3
Pin length: 0.110 inches (2.79mm) ±0.010
Pin length: 0.145 inches (3.68mm) ±0.010
M E C H A N I C A L S P E C I F I C AT I O N S
2.30
(58.42)
METAL CASE
0.515
(13.08)
Case C12
I/O Connections
INSULATED BASE
PIN DIAMETERS:
PINS 1-4, 6-8 0.040 ±0.002 (1.016 ±0.051)
PINS 5, 9
0.080 ±0.002 (2.032 ±0.051)
0.20 MIN.
(5.08)
0.20
(5.08)
1.900
(48.26)
0.20
(5.08)
1
9
2
2.000
(50.80)
3
8
7
6
0.400
(10.16)
0.700
(17.78)
1.000
(25.40)
1.400
(35.56)
2.40
(60.96
Pin
1
2
3
4
5
6
7
8
9
Function P17
–Input
Case
On/Off Control
+Intput
+Output
+Sense
Trim
–Sense
–Output
Optional Heat Sinks
DATEL offers two heat sinks (part
number HS-CP and HS-CPLP2) for
the UCP models. For mechanical
specifications, see page 7.
4
(4) THREADED INSERTS
#M3 THD THRU
5
0.50
(12.70)
BOTTOM VIEW
2
4 0 - 7 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S
UCP Models
Performance/Functional Specifications
Typical @ T
A
= +25°C under nominal line voltage and full-load conditions, unless noted.
➀➁
Input
Input Voltage Range:
D12 Models
D24 Models
D48 Models
Overvoltage Shutdown:
D12 Models
D24 Models
D48 Models
Start-Up Threshold:
➂
D12 Models
D24 Models
D48 Models
Undervoltage Shutdown:
➂
D12 Models
D24 Models
D48 Models
Input Current:
Normal Operating Conditions
Standby Mode (Off, OV, UV)
Input Filter Type
Reverse-Polarity Protection:
D12/D24 Models
D48 Models
On/Off Control
(Pin 3)
➃
V
OUT
Accuracy
(50% load):
➄
3.3V Outputs
5/12/15V Outputs
Temperature Coefficient
Ripple/Noise
(20MHz BW)
➀➅
Line/Load Regulation
Efficiency
Isolation Voltage:
Input-to-Output
Input-to-Case
Output-to-Case
Isolation Capacitance
Isolation Resistance
Current Limiting:
3.3V and 5V Outputs
12V and 15V Outputs
Overvoltage Protection
Transient Response
(50% load step)
Start-Up Time:
➂
V
IN
to V
OUT
On/Off to V
OUT
Switching Frequency
Operating Temperature
(Ambient):
Without Derating
With Derating
Case Temperature:
Maximum Allowable
For Thermal Shutdown
Storage Temperature
Dimensions
12-18 Volts (12V nominal)
18-36 Volts (24V nominal)
36-75 Volts (48V nominal)
20 Volts
40 Volts
80 Volts
9.5 Volts
17 Volts
35 Volts
9 Volts
16 Volts
34 Volts
See Ordering Guide
5mA
Pi
Brief duration, 15A maximum
Brief duration, 10A maximum
TTL high (or open) = on, low = off
Shielding
Case Connection
Case Material
Pin Material
Weight
Physical
2.3 x 2.4 x 0.515" (58.4 x 61 x 13.1mm)
5-sided
Pin 2
Zinc with a non-conductive, epoxy-based
black enamel finish and plastic baseplate
Brass, solder coated
5.3 ounces (149 grams)
➀
These power converters require a minimum 10% output loading to maintain specified
➁
➂
➃
➄
➅
regulation. Operation under no-load conditions will not damage these devices; however
they may not meet all listed specifications.
All models are specified with external 33µF, low-ESR, input capacitors and 10µF tantalum
in parallel with 1µF ceramic output capacitors.
See Technical Notes for details.
Devices may be ordered with the opposite polarity (pin 3 open = off), or the on/off control
function can be replaced with a sync function. See Part Number Suffixes and Technical
Notes for additional information.
Accracy is specified with the sense pins tied directly to their respective output pins.
Output noise may be further reduced with the installation of additional external output
capacitors. See Technical Notes.
Absolute Maximum Ratings
Input Voltage:
Continuous:
D12 Models
D24 Models
D48 Models
Transient (100msec):
D12 Models
D24 Models
D48 Models
Input Reverse-Polarity Protection
Output Overvoltage Protection
3.3V Outputs
5V Outputs
12V Outputs
15V Outputs
Output Current
Output
±1.5%, maximum
±1%, maximum
±0.04% per °C
See Ordering Guide
See Ordering Guide
See Ordering Guide
1500Vdc, minimum
1500Vdc, minimum
1500Vdc, minimum
750pF
100MΩ
Hiccup technique, auto-recovery
Power-limiting technique, auto-recovery
Zener/transorb clamp, magnetic feedback
22 Volts
44 Volts
88 Volts
25 Volts
50 Volts
100 Volts
Current must be <15/10 Amps. Brief
duration only. Fusing recommended.
4.5 Volts, limited duration
6.8 Volts, limited duration
15 Volts, limited duration
18 Volts, limited duration
Current limited. 12/15V devices can
withstand an output short circuit for a
brief duration only. 3.3/5V devices can
withstand output shorts indefinitely.
–40 to +105°C
+300°C
Storage Temperature
Lead Temperature
(soldering, 10 sec.)
Dynamic Characteristics
200µsec max. to ±1.5% of final value
50msec
30msec
400kHz (±25kHz)
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.
Environmental
–40 to +45/50°C (Model dependent)
to +100°C (See Derating Curves)
+100°C
+95°C minimum, +105°C maximum
–40 to +105°C
3
XCP Series
4 0 - 7 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S
D12 Models (50 Watts)
60
60
50
50
Output Power (Watts)
40
Output Power (Watts)
40
30
Natural Convection Cooling
20
150 Linear Feet Per Minute
300 Linear Feet Per Minute
30
Natural Convection Cooling
20
150 Linear Feet Per Minute
300 Linear Feet Per Minute
10
10
0
–40
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0
–40
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 2a. Temperature Derating Without Heat Sink
Figure 2b. Temperature Derating With HS-CP Heat Sink
D24 Models (60 Watts)
60
60
50
50
Output Power (Watts)
40
Output Power (Watts)
40
30
Natural Convection Cooling
20
150 Linear Feet Per Minute
300 Linear Feet Per Minute
30
Natural Convection Cooling
20
150 Linear Feet Per Minute
300 Linear Feet Per Minute
10
10
0
–40
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0
–40
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 3a. Temperature Derating Without HS-CP Heat Sink
Figure 3b. Temperature Derating With HS-CP Heat Sink
D48 Models (60 Watts)
60
60
50
50
Output Power (Watts)
40
Output Power (Watts)
40
30
Natural Convection Cooling
20
150 Linear Feet Per Minute
300 Linear Feet Per Minute
30
Natural Convection Cooling
20
150 Linear Feet Per Minute
300 Linear Feet Per Minute
10
10
0
–40
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0
–40
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 4a. Temperature Derating Without HS-CP Heat Sink
Figure 4b. Temperature Derating With HS-CP Heat Sink
4
4 0 - 7 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S
UCP Models
T E C H N I C A L
N O T E S
On/Off Control (Standard)
The On/Off Control pin (pin 3) may be used for remote on/off operation.
As shown in Figure 5, the control pin is referenced to the –Input (pin 1) and
has an internal pull-up resistor (28.7kΩ, 75kΩ and 100kΩ respectively for
D12, D24 and D48 models) to the +Input (pin 4). The standard UCP converter
is designed so that it is enabled when the control pin is left open and disabled
when the control pin is pulled low (to less than +0.8V relative to –Input). When
left open, pin 3 is pulled up to approximately 5V on "D24" models and 8V
on "D48" models.
Dynamic control of the on/off function is best accomplished with a mechanical
relay or an open-collector/open-drain drive circuit (optically isolated if appro-
priate). The drive circuit should obviously be able to sink approximately 1mA
when activated and withstand more than 10 Volts when deactivated.
Applying an external voltage to pin 3 when no input power is applied to
the converter can cause permanent damage to the converter. The on/off
control function, however, is designed such that the converter can be disabled
(pin 3 pulled low) while input power is ramping up and then "released" once
the input has stabilized. Under these circumstances, it takes approximately
30ms for the output of the fully loaded DC/DC to ramp up and settle to within
rated accuracy.
For UCP converters configured with the negative-polarity option on the On/Off
Control pin ("N" suffix added to part number), operation is exactly opposite
to that described above.
Floating Outputs
Since these are isolated DC/DC converters, their outputs are "floating."
Designers will usually use the –Output (pin 9) as the ground/return of the
load circuit. You can, however, use the +Output (pin 5) as ground/return to
effectively reverse the output polarity.
Filtering and Noise Reduction
All UCP DC/DC Converters achieve their rated ripple and noise specifications
using the external input and output capacitors specified in the Performance/
Functional Specifications table. In critical applications, input/output noise may
be further reduced by installing additional external I/O caps. Input capacitors
should be selected for bulk capacitance, low ESR and high rms-ripple-current
ratings. Output capacitors should be selected for low ESR and appropriate
frequency response. All caps should have appropriate voltage ratings and be
mounted as close to the converters as possible.
The most effective combination of external I/O capacitors will be a function
of your particular load and layout conditions. Our Applications Engineers will
be happy to recommend potential solutions and can discuss the possibility of
our modifying a given device’s internal filtering 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. Fuses should also be
used if the possibility of sustained, non-current-limited, input-voltage polarity
reversals exists. For DATEL UCP DC/DC Converters, you should use slow-
blow type fuses with values no greater than the following.
V
IN
Range
D12 Models
D24 Models
D48 Models
Fuse Value
7 Amps
6 Amps
3 Amps
4
+INPUT
3
ON/OFF
CONTROL
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 "D48" models). Once operating, devices will not turn off until the input
voltage drops below the Undervoltage Shutdown/Lockout limit (34V for "D48"
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
unstable on/off situations at a single voltage.
Start-Up Time
The V
IN
to V
OUT
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 V
OUT
start-up time assumes the converter has its nominal input
voltage applied but is turned off via the On/Off Control. 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.
Input Reverse-Polarity Protection
Upon applying a reverse-polarity voltage to the DC/DC converter, an internal
diode will be forward biased and draw excessive current from the power
source. Therefore, it is required that the input current be limited be either an
appropriately rated input fuse or a current limited power source.
1
–INPUT
Figure 5. Driving the On/Off Control Pin
5
Analog electronics
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