®
®
PRELIMINARY
INNOVATION and EXCELLENCE
Single Output
UHP Series
Open-Frame, Low V
OUT
to 50A
Half-Brick, DC/DC Converters
Features
■
■
■
■
■
■
■
■
■
■
■
■
■
1.5/1.8/2.5/3.3V outputs @ up to 50 Amps
Input range: 36V-75V
Open frame: 2.3" x 2.4" x 0.47"
Industry-standard package/pinout
Light weight: 2.24 ounces (63.5g)
Remose sense, Trim, On/Off Control
High efficiency: 89%
Fully isolated, 1500Vdc guaranteed
Input under and overvoltage shutdown
Output overvoltage protection
Short circuit protection; thermal shutdown
UL60950 and EN60950 safety approvals
CE mark
DATEL's fully isolated UHP series of DC/DC converters affords users a practical
solution for their low-voltage/high-current applications. With an input voltage range of
36 to 75 Volts, the UHP Series delivers up to 50 Amps of output current from a fully
regulated 1.5V output (UHP-1.5/50-D48) or or 45 Amps of 2.5V (UHP-2.5/45-D48).
Using both surface-mount technology and planar magnetics, these converters are
manufactured on a 2.3" x 2.4" open-frame package with an industry-standard pinout
configuration.
UHP converters utilize a full-bridge, fixed-frequency topology along with syn-
chronous output rectification to achieve a high efficiency of 89%. This efficiency,
coupled with the open-frame package that allows unrestricted air flow, reduces
internal component temperatures thereby allowing operation at elevated ambient
temperatures.
These DC/DC's provide output trim, sense pins and primary side on/off control
(available with positive or negative logic) or sync. Standard features also include
input overvoltage and undervoltage shutdown circuitry, output overvoltage protec-
tion, output short-circuit and current limiting protection and thermal shutdown. All
devices meet IEC950, UL60950 and EN60950 safety standards and carry the CE
mark (meet LVD) requirements). CB reports are available on request.
+INPUT
+3.3V OUTPUT
OUTPUT
RETURN
SECONDARY
SWITCH
CONTROL
PRIMARY
SWITCH
CONTROL
–INPUT
PWM
CONTROLLER
+SENSE
OPTO
ISOLATION
REFERENCE &
ERROR AMP
–SENSE
UV & OV
COMPARATORS
THERMAL
SHUTDOWN
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
XHP Series
4 0 - 5 0 A M P, S I N G L E O U T P U T D C / D C C O N V E R T E R S
Performance Specifications and Ordering Guide
Output
Model
UHP-1.5/50-D48
UHP-1.8/50-D48
UHP-2.5/45-D48
UHP-3.3/40-D48
➀
➁
➂
➃
➀
Input
Regulation (Max.)
Line
±1%
±1%
±1%
±1%
V
OUT
(Volts)
1.5
1.8
2.5
3.3
I
OUT
➁
(Amps)
50
50
45
40
R/N (mVp-p)
➁
Typ.
TBD
TBD
80
150
Max.
TBD
TBD
120
190
Load
➂
±1%
±1%
±1%
±1%
V
IN
Nom.
(Volts)
48
48
48
48
Range
(Volts)
36-75
36-75
36-75
36-75
I
IN
➃
(mA)
TBD
TBD
TBD
120/2340
Efficiency
Min.
TBD
TBD
TBD
86.5%
Typ.
TBD
TBD
TBD
88%
Package
(Case,
Pinout)
C27, P53
C27, P53
C27, P53
C27, P53
Typical at T
A
= +25°C under nominal line voltage and full-load conditions.
Ripple/Noise (R/N) measured over a 20MHz bandwidth with 10µFtantalum and 1µF ceramic output capacitors.
Tested from no load to 100% load.
Nominal line voltage, no load/full load condition.
PA R T N U M B E R S T R U C T U R E
UHP
-
3.3
/
40
-
D48 N
Unipolar
High-Power Series
Nominal Output Voltage:
2.5, 3.3 Volts
Maximum Output Current:
30 Amps
Add "N" or "S" suffix as desired
Input Voltage Range:
D48
= 36-75 Volts (48V nominal)
Part Number Suffixes
UHP 30 Amp DC/DC's are designed so a negative logic
on/off control ("N" suffix) or a Sync function ("S" suffix) can be
added in the pin 3 position.
No Suffix
On/Off Control function (positive polarity)
N
S
Negative polarity on/off control
Sync function
M E C H A N I C A L S P E C I FI C A T I O N S
2.30
(58.42)
0.39
(9.91)
STANDOFF WIDTH
0.056 (1.42)
0.120 MIN.
(3.05)
1.900
(48.26)
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)
I/O Connections
Pin
1
2
3
4
5
6
7
8
9
Function P53
–Input
No Pin
On/Off Control
+Input
+Output
+Sense
Trim
–Sense
–Output
0.20
(5.08)
1
9
8
Case C27
3
7
6
0.400
(10.16)
0.700
(17.78)
1.000
(25.40)
1.400
(35.56)
2.40
(60.96)
4
5
0.50
(12.70)
BOTTOM VIEW
2
4 0 - 5 0 A M P, S I N G L E O U T P U T C O N V E R T E R S
UHP Models
Dynamic Characteristics (continued)
Start-Up Time:
V
IN
to V
OUT
On/Off to V
OUT
Switching Frequency
MTBF
➆
Operating Temperature
(Ambient):
➁
Without Derating (200lfm)
1.5V Output
1.8V Output
2.5V Output
3.3V Output
With Derating
Thermal Shutdown
Storage Temperature
Dimensions
Pin Material
Weight:
TBD
TBD
350kHz (±35kHz
)
Performance/Functional Specifications
Typical @ T
A
= +25°C under nominal line voltage, full-load conditions, unless noted.
➀
Input
Input Voltage Range
Overvoltage Shutdown
Start-Up Threshold
Undervoltage Shutdown
Input Current:
Normal Operating Conditions
Standby Mode:
Off, OV, UV, Thermal Shutdown
Input Reflected Ripple Current:
Source Impedance
Internal Input Filter Type
Reverse-Polarity Protection
On/Off Control
(Pin 3):
➂ ➃ ➅
36-75 Volts (48V nominal)
77-81 Volts (79V typical)
34-36 Volts (35V typical)
32.5-34.5 Volts (33.5V typical)
See Ordering Guide
TBD typical
<0.1Ω, no external input filtering
TBD
Pi (0.01µF - TBDµH - 3.3µF)
1 minute duration, 5A maximum
On = open or 2.5V to +V
IN
,
I
IN
= less than 50µA
Off = 0-0.8V, I
IN
= 200µA @ 0V
On = 0-0.8V, I
IN
= TBD @ 0V
Off = open or TBD Volts
TBD Volts
TBD Volts
TBD Volts
TBD minimum
TBD Volts
TBD
TBD nsec
Environmental
TBD million hours
TBD
TBD
+42°C
+49°C
See Derating Curves
TBD
–40 to +120°C
Physical
2.3" x 2.4" x 0.465" (58.4 x 61 x 11.8mm)
Brass, solder coated
2.24 ounces (63.5 grams)
"N" Suffix Models
Sync
(Option, Pin 6):
➂ ➃ ➅
Input Threshold
Input Voltage Low
Input Voltage High
Input Resistance
Output High Voltage (100µA load)
Output Drive Current
Input/Output Pulse Width
V
OUT
Accuracy:
2.5V, 3.3V Output
Minimum Loading Per Specification
Ripple/Noise
(20MHz BW)
➄
Line/Load Regulation
Efficiency
Output Voltage Sense Range
Trim Range
➁
Isolation Voltage:
Input-to-Output
Isolation Resistance
Isolation Capacitance
Current Limit Inception:
98.5% V
OUT
Short Circuit Current:
Overvoltage Protection:
1.5V Output
1.8V Output
2.5V Output
3.3V Output
Maximum Capacitive Loading
Temperature Coefficient
Dynamic Load Response:
1.5V (50-100% load step to 1% V
OUT
)
1.8V (50-100% load step to 1% V
OUT
)
2.5V (50-100% load step to 1% V
OUT
)
3.3V (50-100% load step to 1% V
OUT
)
Primary to Secondary Insulation Level
Operational
➀
All models are specified with external 10µF tantalum and 1µF ceramic output capacitors.
➁
See Technical Notes/Graphs for details.
➂
The On/Off Control function can be replaced with a Sync function. See Part Number
Suffixes and Technical Notes for details.
➃
Applying a voltage to On/Off Control (pin 3) when no input power is applied to the
converter can cause permanent damage.
➄
Output noise may be further reduced with the installation of additional external output
capacitors. See Technical Notes.
➅
On/Off control is designed to be driven with open collector or by appropriate voltage
levels. Voltages must be referenced to the –Input (pin 1).
➆
MTBF’s are calculated using Telcordia (Bellcore), ground fixed conditions, +25°C ambient air,
and full-load conditions. Contact DATEL for demonstrated life-test data.
Output
±1.0% maximum
No load
See Ordering Guide
See Ordering Guide
See Ordering Guide
+10%
±10%, –20%
Absolute Maximum Ratings
Input Voltage:
Continuous:
Transient (100msec):
Input Reverse-Polarity Protection
Output Current
81 Volts
100 Volts
Input Current must be <5A. 1 minute
duration. Fusing recommended.
Current limited. Devices can withstand
an indefinite output short circuit.
+V
IN
–40 to +120°C
+300°C
1500Vdc minimum
100MΩ
940pF
Model dependent
45-55 Amps
TBD Amps average current
Comparator, latching
TBD Volts
TBD Volts
TBD Volts
TBD Volts
TBD µF
±0.02% per °C
On/Off Control (Pin 3) Max. Voltages
Referenced to –Input (pin 1)
Storage Temperature
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, nor recommended.
TECHNICAL NOTES
Trimming Output Voltages
UHP converters have a trim capability (pin 7) that allows users to adjust the
output voltage 5%. Adjustments can be accomplished via a trim pot, Figure 2,
or a single fixed resistor as shown in Figures 3 and 4. A single fixed resistor
can increase or decrease the output voltage depending on its connection.
Fixed resistors should have absolute TCR's less than 100ppm/°C to minimize
sensitivity to changes in temperature.
Dynamic Characteristics
TBDµsec maximum
TBDµsec maximum
TBDµsec maximum
TBDµsec maximum
3
XHP Series
3.3V @ 30A, SINGLE OUTPUT DC/DC CONVERTERS
A single resistor connected from the Trim (pin 7) to the +Sense (pin 6), see
Figure 3, will increase the output voltage. A resistor connected from the Trim
(pin 7) to the –Sense (pin 8) will decrease the output voltage. See Figure 4.
Trim adjustments greater than +10%/–20% can have an adverse effect on the
converter's performance and are not recommended.
3.3V
OUT
Trim Up Equation
R
T
UP
(kΩ) =
13.3(V
O
– 1.226)
V
O
– 3.3
–10.2
3.3V
OUT
Trim Down Equation
R
T
DOWN
(kΩ) =
1
–INPUT
+OUTPUT
5
6
20kΩ
5-22
TURNS
16.31
3.3 – V
O
–10.2
2
+SENSE
CASE
TRIM
Accuracy of adjustment is subject to tolerances or resistor values
and factory-adjusted output accuracy. V
O
= desired output voltage.
LOAD
7
3
ON/OFF
CONTROL
–SENSE
8
30
UHP-2.5/45-D48 Temperature Derating
V
IN
= 48V (air flow direction from output pins to input pins)
4
+INPUT
–OUTPUT
9
25
400lfm
Output Current (Amps)
200lfm
Figure 2. Trim Connections Using A Trim Pot
20
15
1
–INPUT
+OUTPUT
5
PRELIMINARY
150lfm
NATURAL CONVECTION
300lfm
10
2
+SENSE
CASE
TRIM
6
7
R
TRIM UP
5
LOAD
0
28
32
36
40
44
48
52
56
60
64
68
72
76
80
84
88 92
94
96 100
3
ON/OFF
CONTROL
–SENSE
8
4
+INPUT
–OUTPUT
9
Ambient Temperature (
˚
C)
UHP-3.3/40-D48 Temperature Derating
V
IN
= 48V (air flow direction from output pins to input pins)
Figure 3. Trim Connections To Increase Output Voltages Using Fixed Resistors
45
200lfm
40
300lfm
35
1
–INPUT
+OUTPUT
5
Output Current (Amps)
400lfm
30
25
20
15
10
2
+SENSE
CASE
TRIM
6
150lfm
NATURAL CONVECTION
7
R
TRIM DOWN
LOAD
3
ON/OFF
CONTROL
–SENSE
8
4
+INPUT
–OUTPUT
9
5
0
–40 –20 0
20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92 96 100
Figure 4. Trim Connections To Decrease Output Voltages Using Fixed Resistors
Ambient Temperature (
˚
C)
®
®
INNOVATION and EXCELLENCE
ISO 9001 REGISTERED
DS0492A
12/01
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
Internet: www.datel.com
Email: sales@datel.com
DATEL (UK) LTD. Tadley, England Tel: (01256)-880444
DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01
DATEL GmbH München, Germany Tel: 89-544334-0
DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025
DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do
not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.
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