®
®
INNOVATION and EXCELLENCE
Single Output
UPB Models
High-Efficiency, Smaller-Package
25-40 Watt, DC/DC Converters
Features
25/30/35/40W output power
Standard pinout! Smaller size!
New 2" x 3" package fits 3" x 3" footprint
5V, 12V or 15V outputs
Four input voltage ranges:
10-36V, 18-36V
18-72V, 36-72V
High efficiencies (to 85%)
Fully isolated, 750Vdc guaranteed
Input under and overvoltage lockout
Thermal shutdown
V
OUT
trim and on/off control
UL1950, CSA 22.2 No. 950, IEC950
Modifications and customs for OEM's
DATEL’s UPB Model, 25-40 Watt, single-output DC/DC power converters bring
you efficient "on-board" power processing in a cost-effective smaller package with
a standard pinout. The 2" x 3" UPB "footprint" conforms with the industry-standard
pinout and pin geometries of most 3" x 3" devices (a 33% space savings) while
delivering as much as 60% more power (40W vs. 25W).
Applicable to a wide range of telecom, computer and other OEM applications,
UPB Model DC/DC’s operate from four input voltage ranges (10-36V for "Q12"
models, 18-36V for "D24" models, 18-72V for "Q48" models, and 36-72V for "D48"
models). Available output voltages are 5, 12 and 15 Volts.
For improved reliability and affordability, DATEL exploits contemporary, high-
speed, automatic-assembly techniques to construct the UPB’s traditional, field-
proven, SMT-on-pcb designs. Devices employ corrosion-resistant steel cases with
heavy zinc top plates (traditionally referred to as baseplates). Heat generating trans-
former cores and power semiconductors are mounted directly to the baseplates,
which also have threaded inserts for optional add-on heat sinks or pcb mounting.
Temperature derating information is provided for operation with and without heat
sinks and forced air flow.
All devices feature input pi filters, input undervoltage and overvoltage shutdown,
output overvoltage protection, output current limiting, and thermal shutdown. All
UPB models are UL1950, CSA 22.2 No. 950, and IEC950 approved. Most have
been EMI/EMC characterized. Contact DATEL for the latest available information.
+V
IN
+V
OUT
COMMON
–V
IN
PWM
CONTROLLER
ISOLATION
REFERENCE &
ERROR AMP
TRIM
ON/OFF
CONTROL
(SYNC)
UVLO & OVLO
COMPARATORS
CASE
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
XPB Series
2 5 - 4 0 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
UPB-5/5-Q12
UPB-5/6-Q48
UPB-5/7-D24
UPB-5/8-D48
UPB-12/2.1-Q12
UPB-12/2.5-Q48
UPB-12/3-D24
UPB-12/3.3-D48
UPB-15/1.7-Q12
UPB-15/2-Q48
UPB-15/2.5-D24
UPB-15/2.65-D48
➀
➁
➂
➃
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%
V
OUT
(Volts)
5
5
5
5
12
12
12
12
15
15
15
15
I
OUT
(mA)
5
6
7
8
2.1
2.5
3
3.3
1.7
2
2.5
2.65
R/N (mVp-p)
➁
Typ.
75
75
75
75
90
90
90
90
100
100
100
100
Max.
100
100
100
100
120
120
120
120
150
150
150
150
Load
➂
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
V
IN
Nom.
(Volts)
24
48
24
48
24
48
24
48
24
48
24
48
Range
(Volts)
10-36
18-72
18-36
36-72
10-36
18-72
18-36
36-72
10-36
18-72
18-36
36-72
I
IN
➃
(mA)
50/1366
25/799
25/1796
25/1026
50/1326
30/761
25/1825
25/1004
50/1325
30/761
25/1879
25/1008
Efficiency
Min.
77%
79%
82%
82%
81%
83%
83%
83%
81%
83%
84%
83%
Typ.
79%
80%
83%
85%
83%
84%
84%
85%
83%
84%
85%
85%
Package
(Case,
Pinout)
C10, P14
C10, P14
C10, P14
C10, P14
C10, P14
C10, P14
C10, P14
C10, P14
C10, P14
C10, P14
C10, P14
C10, P14
Typical at T
A
= +25°C under nominal line voltage and full-load conditions unless otherwise noted.
Ripple/Noise (R/N) measured over a 20MHz bandwidth.
10 to 100% load.
Nominal line voltage, no-load/full-load conditions.
N U M B E R
S T R U C T U R E
O U T P U T P OW E R C O N S I D E R AT I O N S
P A R T
U PB
-
5
/
8
-
D48
Output Configuration:
U
= Unipolar
Power Package with
Metal Baseplate
Nominal Output Voltage:
5, 12 or 15 Volts
Input Voltage Range:
Q12
= 10-36 Volts (24V nominal)
D24
= 18-36 Volts (24V nominal)
Q48
= 18-72 Volts (48V nominal)
D48
= 36-72 Volts (48V nominal)
Maximum Output Current
in Amps
UPB DC/DC Converters are classified, by output power, into 25, 30, 35 and
40 Watt devices. For any given device, the maximum available output power
is the product of the nominal output voltage and the maximum output current
indicated within the part number. A UPB-5/6-Q48, for example, can source
6 Amps from its 5V output (over its entire 18-72V input range) delivering an
output power of 30 Watts. A UPB-5/8-D48 can deliver 40 Watts.
Model
Q12
Q48
D24
D48
Maximum Output Power
25 Watts
30 Watts
35 Watts
40 Watts
M E C H A N I C A L
S P E C I F I C A T I O N S
Optional Heat Sink
(Part Number HS-23)
3.00
(76.20)
METAL
BASEPLATE
0.025
(0.64)
0.50
(12.70)
0.20 MIN.
(5.08)
METAL CASE
Case C10
0.040 ±0.002 DIA.
(1.016 ±0.051)
2.500
(63.50)
0.25
(6.35)
0.40
(10.16)
1
6
2
1.200
(30.48)
7
1.600
2.00
(40.64)
4 EQ. SP. @ (50.80)
0.400 (10.16)
I/O Connections
Pin Function P14
1
No Pin
2
–Input
3
+Input
4
Case
5 On/Off Control*
6
No Pin
7
No Pin
8
Common
9
+V
OUT
10
Trim
* See note 3 on next page.
TOP VIEW
3.00
(76.20)
2.600
(66.04)
0.20
(5.08)
1.200
(30.48)
2.00
(50.80)
0.40
(10.16)
0.120 DIA. (3.048)
(4 PLACES)
3
4
(4) THREADED INSERTS
#4-40 THD THRU
WITH 0.025 (0.64)
STANDOFFS
8
9
10
BOTTOM VIEW
0.50
(12.70)
5
0.20
(5.08)
2.600
(66.04)
0.20
(5.08)
MATERIAL: BLACK ANODIZED ALUMINUM
4 MOUNTING SCREWS AND 0.009 (0.229) THERMAL PAD INCLUDED
0.10
(2.54)
2
2 5 - 4 0 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
UPB Models
Performance/Functional Specifications
Typical @ T
A
= +25°C under nominal line voltage and full-load conditions, unless noted.
➀
Input
Input Voltage Range:
Q12 Models
D24 Models
Q48 Models
D48 Models
Undervoltage Lockout:
Q12 Models
D24 Models
Q48 Models
D48 Models
Input Current
Input Filter Type
➁
Overvoltage Shutdown:
D24 and Q12 Models
D48 and Q48 Models
Reverse-Polarity Protection
On/Off Control
(Pin 5)
➂
V
OUT
Accuracy
(50% load)
Temperature Coefficient
Ripple/Noise
(20MHz BW)
➁
Line/Load Regulation
Efficiency
Isolation Voltage
Isolation Capacitance
Current Limiting
Overvoltage Protection
Transient Response
(50% load step)
Switching Frequency
Operating Temperature
(ambient):
Without Derating
With Derating
Maximum Baseplate Temperature
Storage Temperature
Dimensions
Shielding
Case Connection
Case Material
Baseplate Material
Pin Material
Weight
10-36 Volts (24V nominal)
18-36 Volts (24V nominal)
18-72 Volts (48V nominal)
36-72 Volts (48V nominal)
9 Volts
17 Volts
17 Volts
34 Volts
See Ordering Guide
Pi
Storage Temperature
40 Volts
80 Volts
Yes (Instantaneous, 6A maximum)
TTL high (or open) = on, low = off
Input Voltage:
Q12/D24 Models
Q48/D48 Models
Absolute Maximum Ratings
44 Volts
88 Volts
Current must be <6A. Brief
duration only. Fusing recommended.
6.8 Volts
15 Volts
18 Volts
Current limited. Max. current and
short-circuit duration are model
dependent.
–40 to +105°C
+300°C
Input Reverse-Polarity Protection
Output Overvoltage Protection
5V Outputs
12V Outputs
15V Outputs
Output Current
Lead Temperature
(soldering, 10 sec.)
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.
Output
±1%, maximum
±0.04% per °C
See Ordering Guide
See Ordering Guide
See Ordering Guide
750Vdc, minimum
700pF
Continuous, auto-recovery
Zener/transorb clamp, magnetic feedback
T E C H N I C A L
N O T E S
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 UPB 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 install-
ing electrolytic capacitors across the input terminals and/or low-ESR tanta-
lum 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
To Reduce Output Ripple
5V Outputs
12/15V Outputs
47µF, 50V
10µF, 100V
47µF, 10V, Low ESR
22µF, 20V, Low ESR
Dynamic Characteristics
200µsec max. to ±1.5% of final value
165kHz (±10%)
Environmental
–25 to +50°C (model dependent)
to +100°C (See Derating Curves)
+100°C
–40 to +105°C
Physical
2" x 3" x 0.50" (50.8 x 76.2 x 12.7mm)
6-sided
Pin 4
Bright tin-plated steel
Aluminum
Brass, solder coated
4 ounces (113 grams)
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 UPB
DC/DC Converters, you should use slow-blow type fuses with values no
greater than the following:
V
IN
Range
Q12, D24 Models
Q48 Models
D48 Models
Fuse Value
4A
3A
2A
➀
These 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.
➁
Application-specific internal input/output filtering can recommended or perhaps added
internally upon request. Contact DATEL Applications Engineering for details.
➂
Applying a voltage to the Control pin when no input power is applied to the converter can
cause permanent damage to the converter. If desired, the On/Off function can be replaced
with a Sync function. See page 6 of this data sheet for more details.
3
XPB Series
2 5 - 4 0 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
Temperature Derating and Electrical Performance Curves
Q12 Models (25 Watts)
25
30
Q48 Models (30 Watts)
20
25
Output Power (Watts)
Output Power (Watts)
20
15
15
Natural Convection Cooling
10
150 Linear Feet Per Minute
5
300 Linear Feet Per Minute
10
Natural Convection Cooling
150 Linear Feet Per Minute
5
300 Linear Feet Per Minute
0
–25
0
0
40
45
50
55
60
65
70
75
80
85
90
95
100
–25
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
25
30
Figure 3a. Temperature Derating Without Heat Sink
20
25
Output Power (Watts)
Output Power (Watts)
20
15
15
Natural Convection Cooling
10
150 Linear Feet Per Minute
300 Linear Feet Per Minute
5
10
Natural Convection Cooling
150 Linear Feet Per Minute
5
300 Linear Feet Per Minute
0
–25
0
0
40
45
50
55
60
65
70
75
80
85
90
95
100
–25
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 2b. Temperature Derating With Heat Sink
Figure 3b. Temperature Derating With Heat Sink
Model UPB-5/5-Q12
82.5
80
82
86
Model UPB-5/6-Q48
75
70
78
Efficiency (%)
65
Efficiency @ 10V
IN
Efficiency @ 12V
IN
55
Efficiency @ 24V
IN
Efficiency @ 36V
IN
50
Efficiency (%)
74
Efficiency @ 18V
IN
70
Efficiency @ 24V
IN
Efficiency @ 48V
IN
66
Efficiency @ 72V
IN
60
45
0.56
1.11
1.67
2.22
2.78
3.33
3.89
4.44
5
62
0.67
1.33
2
2.67
3.33
4
4.67
5.33
6
Output Current (Amps)
Output Current (Amps)
Figure 2c. Efficiency vs. Output Current and Input Voltage
Figure 3c. Efficiency vs. Output Current and Input Voltage
4
2 5 - 4 0 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
UPB Models
Temperature Derating and Electrical Performance Curves
D24 Models (35 Watts)
35
D48 Models (40 Watts)
40
35
30
30
Output Power (Watts)
Output Power (Watts)
25
25
20
15
10
20
15
Natural Convection Cooling
10
150 Linear Feet Per Minute
300 Linear Feet Per Minute
5
Natural Convection Cooling
150 Linear Feet Per Minute
300 Linear Feet Per Minute
5
0
–25
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0
–25 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 Heat Sink
35
40
35
30
Figure 5a. Temperature Derating Without Heat Sink
30
Output Power (Watts)
Output Power (Watts)
25
25
20
15
10
5
0
Natural Convection Cooling
150 Linear Feet Per Minute
300 Linear Feet Per Minute
20
15
Natural Convection Cooling
10
150 Linear Feet Per Minute
300 Linear Feet Per Minute
5
0
–25
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
–25
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 4b. Temperature Derating With Heat Sink
Figure 5b. Temperature Derating With Heat Sink
Model UPB-5/7-D24
88
88
86
86
84
84
82
Model UPB-5/8-D48
Efficiency (%)
Efficiency (%)
82
80
78
76
74
Efficiency @ 36V
IN
Efficiency @ 48V
IN
Efficiency @ 72V
IN
72
80
Efficiency @ 18V
IN
Efficiency @ 24V
IN
78
Efficiency @ 36V
IN
76
70
74
0.77
1.56
2.33
3.11
3.89
4.67
5.44
6.22
7
68
0.5
1
2
3
4
5
6
7
8
Output Current (Amps)
Output Current (Amps)
Figure 4c. Efficiency vs. Output Current and Input Voltage
Figure 5c. Efficiency vs. Output Current and Input Voltage
5
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