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UHP Series
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Single Output, Isolated, Low VOUT to 60A
Half-Brick, DC/DC Converters
NOT RECOMMENDED
FOR NEW DESIGNS
This product is not RoHS compliant.
Features
■
1.5 to 12 Volt outputs @ up to 60 Amps
■
Input range: 36V-75V
■
Open frame: 2.3" x 2.4" x 0.42"
■
Industry-standard package/pinout
■
Light weight: 2.24 ounces (63.5g)
■
Remote sense, Trim, On/Off Control
■
High efficiency: 92%
■
Fully isolated, 2250Vdc (BASIC)
■
Input undervoltage 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 60 Amps of output current from a fully
regulated 1.8V output, or 50 Amps of 2.5V. Additional outputs are available up to
12V. 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 synchronous output rectification to achieve a high efficiency of 92%. 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). Standard features also include input
undervoltage shutdown circuitry, output overvoltage protection, output short-circuit
and current limiting protection and thermal shutdown. All devices meet IEC/UL/
EN60950 safety standards and carry the CE mark (meet LVD requirements). CB
reports are available on request.
+INPUT
(4)
+OUTPUT
(5)
OUTPUT
RETURN
(9)
SECONDARY
SWITCH
CONTROL
PRIMARY
SWITCH
CONTROL
–INPUT
(1)
PWM
CONTROLLER
UV & OV
COMPARATORS
ON/OFF
CONTROL/
SYNC
(3)
OPTO
ISOLATION
THERMAL
SHUTDOWN
REFERENCE &
ERROR AMP
+SENSE
(6)
–SENSE
(8)
TRIM
(7)
Figure 1. Simplified Schematic
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MDC_UHP100w.B03 Page 1 of 10
UHP Series
Single Output, Isolated, Low VOUT to 60A
Half-Brick, DC/DC Converters
Performance Specifications and Ordering Guide
➀
Output
Input
R/N (mVp-p) ➁
Regulation
Load ➂
IIN ➃
(mA/A)
Full Load
½ Load
±0.5%
±0.5%
48
36-75
150/2.4
82.5%
86.5%
C27,P53
±0.5%
±0.5%
48
36-75
140/2.7
83%
87%
C27,P53
120
±0.5%
±0.5%
48
36-75
120/3.2
84%
87.5%
C27,P53
190
±0.5%
±1%
48
36-75
120/3.6
87%
89%
C27,P53
Typ.
Max.
Line
UHP-1.5/60-D48
1.5
60
100
150
UHP-1.8/60-D48
1.8
60
120
150
UHP-2.5/50-D48
2.5
50
80
UHP-3.3/45-D48
3.3
45
150
UHP-12/21-D48
Please refer to the separate UHP-12/21-D48 data sheet for this model, also not recommended for new designs. Contact DATEL.
UHP-28.2/12-D48
➀
➁
➂
➃
➄
Package
(Case/
Pinout)
Range
(Volts)
IOUT
(Amps)
Model
Efficiency
VIN Nom.
(Volts)
VOUT
(Volts)
This model is still active. Please click here to refer to the separate UHP-28.2/12-D48 data sheet. Contact DATEL.
Typical at TA = +25°C under nominal line voltage and full-load conditions.
Ripple/Noise (R/N) measured over a 20MHz bandwidth with 10μF tantalum and 1μF ceramic output capacitors.
Tested from no load to 100% load.
Nominal line voltage, no load/full load condition.
Contact DATEL for availability and additional technical information,
PA R T N U M B E R S T R U C T U R E
Optional Functions
UHP - 1.8 / 60 - D48 N Lx
UHP Series 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.
Unipolar
High-Power Series
Optional Functions
Nominal Output Voltage:
1.5 to 12 Volts
Input Voltage Range:
D48 = 36-75 Volts (48V nominal)
Maximum Output Current:
60 Amps
Blank
On/Off Control function (positive polarity)
N
S
L1
L2
Negative polarity on/off control (pin 3)
Sync function (excludes On/Off Control)
Pin length: 0.110 in. (2.79mm) ±0.010
Pin length: 0.145 in. (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)
0.42 MAX.
(10.67)
PLASTIC STANDOFFS
ARE RELIEVED 0.030 (0.76)
IN SOLDER JOINT AREA
0.160 MIN.
(4.06)
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
1.900
(48.26)
1
0.20
(5.08)
9
8
Case
Case C27
C27
3
7
6
0.400
(10.16)
4
0.700
(17.78)
1.000
(25.40)
1.400
(35.56)
2.40
(60.96)
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
5
0.50
(12.70)
BOTTOM VIEW
DIMENSIONS ARE IN INCHES (MM)
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MDC_UHP100w.B03 Page 2 of 10
UHP Series
Single Output, Isolated, Low VOUT to 60A
Half-Brick, DC/DC Converters
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage, full-load conditions, unless noted. ➀
Input
Input Voltage Range
36-75 Volts (48V nominal)
Overvoltage Shutdown
None (see Absolute Max. Ratings)
Start-Up Threshold
31-35 Volts (33V typical)
Undervoltage Shutdown
30-33 Volts (31.5V typical)
Dynamic Characteristics (continued)
Start-Up Time:
VIN to VOUT
On/Off to VOUT
10msec
10msec
Switching Frequency
250kHz (±30kHz)
Environmental
MTBF ➆
TBD million hours
TBD
+36°C
TBD
+35°C
See Derating Curves
125°C
Input Current:
Normal Operating Conditions
Standby Mode:
Off, UV, Thermal Shutdown
10mA typical
Input Reflected Ripple Current ➃
5mAp-p
Internal Input Filter Type
Pi (0.47μF - 1.5μH - 3.3μF)
Operating Temperature (Ambient): ➁
Without Derating (400lfm)
1.5V Output
1.8V Output
2.5V Output
3.3V Output
With Derating
Reverse-Polarity Protection
None (see Absolute Max. Ratings)
Thermal Shutdown
On = open or 3.5V to +VIN,
IIN = less than 50μA
Off = 0 to 0.8V, IIN = 200μA @ 0V
On = 0 to 0.8V, IIN = TBD @ 0V
Off = open or 3.5V to +VIN
Storage Temperature
On/Off Control (Pin 3): ➂ ➅
"N" Suffix Models
Sync (Option, Pin 3): ➂
External Clock Frequency
Input Voltage Low
Input Voltage High
Input Impedance
Input/Output Pulse Width
See Ordering Guide
500kHz
2 Volts
5 Volts
4.35kΩ || 33pF
85 nsec
Output
VOUT Accuracy:
±1.0% maximum
Minimum Loading Per Specification
No load
Ripple/Noise (20MHz BW) ➄
See Ordering Guide
Line/Load Regulation
See Ordering Guide
–55 to +125°C
Physical
Dimensions
2.3" x 2.4" x 0.42" (58.4 x 61 x 10.6mm)
Pin Material
Copper, solder coated
Weight:
2.24 ounces (63.5 grams)
Primary to Secondary Insulation Level Basic
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 Input Ripple Current is tested/specified over a 5-20MHz bandwidth with an external 33μF
input capacitor and a simulated source impedance of 220μF and 12μH. See I/O Filtering,
Input Ripple Current and Output Noiose for details.
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.
Efficiency
See Ordering Guide
Output Voltage Sense Range
5% (10% for 3.3V models)
Trim Range: ➁
3.3V Output
1.5, 1.8, 2.5V Output
±10%
±5/%
Isolation Voltage:
Input-to-Output
2250Vdc minimum
Input Voltage:
Continuous:
Transient (100msec):
Isolation Resistance
100MΩ
Input Reverse-Polarity Protection
None. (Input Current must be <1.5A
all the time.)
Output Current
Current limited. Devices can withstand
an indefinite output short circuit.
Absolute Maximum Ratings
Isolation Capacitance
940pF
Current Limit Inception: 97% VOUT
110% IOUT
Short Circuit Current:
TBD Amps average current
Overvoltage Protection:
1.5V Output
1.8V Output
2.5V Output
3.3V Output
Comparator, hiccup
1.7 Volts
2 Volts
2.8 Volts
4.2 Volts
Capacitive Loading Tested To
50,000μF
Temperature Coefficient
±0.02% per °C
81 Volts
100 Volts
On/Off Control (Pin 3) Max. Voltages
Referenced to –Input (pin 1)
+VIN
Storage Temperature
–55 to +125°C
Lead Temperature (Soldering, 10 sec.)
+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, nor recommended.
Dynamic Characteristics
Dynamic Load Response:
1.5V (50-75% load step to 1% VOUT)
1.8V (50-75% load step to 1% VOUT)
2.5V (50-75% load step to 1% VOUT)
3.3V (50-75% load step to 1% VOUT)
250μsec maximum
250μsec maximum
250μsec maximum
250μsec maximum
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MDC_UHP100w.B03 Page 3 of 10
UHP Series
Single Output, Isolated, Low VOUT to 60A
Half-Brick, DC/DC Converters
Input Overvoltage Shutdown
TECHNICAL NOTES
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 UHP Series DC/DC Converters, we recommend
the use of slow-blow type fuses, installed in the ungrounded input supply line,
with values no greater than the following.
Output
Fuse Value
1.5 VOUT
1.8 VOUT
2.5 VOUT
3.3 VOUT
TBD Amp
TBD Amp
TBD Amp
TBD Amp
The UHP Series does not feature input overvoltage shutdown. The converters
do withstand and fully operate during input transients to 100V for 100msec
without interruption; consequently, this function has been disabled. Please
contact DATEL to have input overvoltage shutdown enabled.
Input Source Impedance
The input of UHP converters must be driven from a low ac-impedance
source. The DC/DC's performance and stability can be compromised by
the use of highly inductive source impedances. The input circuit shown in
Figure 2 is a practical solution that can be used to minimize the effects of
inductance in the input traces. For optimum performance, components should
be mounted as close as possible to the DC/DC converter.
I/O Filtering, Input Ripple Current, and Output Noise
All relevant national and international safety standards and regulations must
be observed by the installer. For system safety agency approvals, the
converters must be installed in compliance with the requirements of the enduse safety standard, i.e. IEC/EN/UL60950.
Input Reverse-Polarity Protection
The UHP Series does not have reverse polarity protection. If the input
voltage polarity is accidentally reversed, an internal diode will become forward biased. The current howerver is limited to 1.6A. If this current is
exceeded, it could cause permanent damage to the converter.
Input Undervoltage Shutdown and Start-Up Threshold
Under normal start-up conditions, devices will not begin to regulate properly
until the ramping-up input voltage exceeds the Start-Up Threshold Voltage
(33V typ.). Once operating, devices will not turn off until the input voltage
drops below the Undervoltage Shutdown limit (31.5V typ.). Subsequent restart will not occur until the input is brought back up to the Start-Up Threshold. This built in hysteresis prevents any unstable on/off situations from
occurring at a single input voltage.
All models in the UHP Series are tested/specified for input reflected
ripple current and output noise using the specified external input/output
components/circuits and layout as shown in the following two figures.
External input capacitors (CIN in Figure 2) serve primarily as energy-storage
elements, minimizing line voltage variations caused by transient IR drops in
conductors from backplane to the DC/DC. Input caps should be selected for
bulk capacitance (at appropriate frequencies), low ESR, and high rms-ripplecurrent ratings. The switching nature of DC/DC converters requires that dc
voltage sources have low ac impedance as highly inductive source impedance can affect system stability. In Figure 2, CBUS and L simulate a typical
dc voltage bus. Your specific system configuration may necessitate additional
considerations.
TO
OSCILLOSCOPE
3
+INPUT
LBUS
+
VIN
CURRENT
PROBE
CBUS
CIN
–
Start-Up Time
1
The VIN to VOUT Start-Up Time is the interval of time between the point
at which the ramping input voltage crosses the Start-Up Threshold and
the fully loaded output voltage enters and remains within 90% of VOUT .
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 at the converter. The UHP Series implements a soft start circuit that
limits the duty cycle of its PWM controller at power up, thereby limiting the
input inrush current.
The On/Off Control to VOUT start-up time assumes the converter has its
nominal input voltage applied but is turned off via the On/Off Control pin. The
specification defines the interval between the point at which the converter is
turned on (released) and the fully loaded output voltage enters and remains
within its specified accuracy band.
Similar to the VIN to VOUT start-up, the On/Off Control to VOUT start-up
time is also governed by the internal soft start circuitry and external load
capacitance. The difference in start up time from VIN to VOUT and from On/Off
Control to VOUT is therefore insignificant.
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–INPUT
CIN = 33μF, ESR < 700mΩ @ 100kHz
CBUS = 220μF, ESR < 100mΩ @ 100kHz
LBUS = 12μH
Figure 2. Measuring Input Ripple Current
In critical applications, output ripple/noise (also referred to as periodic and
random deviations or PARD) may be reduced below specified limits using
filtering techniques, the simplest of which is the installation of additional
external output capacitors. They function as true filter elements and should be
selected for bulk capacitance, low ESR and appropriate frequency response.
All external capacitors should have appropriate voltage ratings and be
located as close to the converter as possible. Temperature variations for all
relevant parameters should also be taken carefully into consideration.
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MDC_UHP100w.B03 Page 4 of 10
UHP Series
Single Output, Isolated, Low VOUT to 60A
Half-Brick, DC/DC Converters
The most effective combination of external I/O capacitors will be a function
of line voltage and source impedance, as well as particular load and layout
conditions. Our Applications Engineers can recommend potential solutions
and discuss the possibility of our modifying a given device's internal filtering
to meet your specific requirements. Contact our Applications Engineering
Group for additional details.
ing circuitry will power down the PWM controller causing the output voltage
to decrease. Following a time-out period the PWM will restart, causing the
output voltage to ramp to its appropriate value. If the fault condition persists,
and the output voltage again climbs to excessive levels, the overvoltage
circuitry will initiate another shutdown cycle. This on/off cycling is referred to
as "hiccup" mode.
In Figure 3, the two copper strips simulate real-world PCB impedances
between the power supply and its load. In order to minimize measurement
errors, scope measurements should be made using BNC connectors, or the
probe ground should be as short as possible (i.e. less than ½ inch) and
soldered directly to the fixture.
Current Limiting
+SENSE
+OUTPUT
7
COPPER STRIP
8
C1
C2
SCOPE
RLOAD
4
–OUTPUT
5
–SENSE
COPPER STRIP
C1 = 0.1μF CERAMIC
C2 = 10μF TANTALUM
LOAD 2-3 INCHES (51-76mm) FROM MODULE
Figure 3. Measuring Output Ripple/Noise (PARD)
As soon as the output current increases to approximately 110% of its rated
value, the DC/DC converter will go into a current-limiting mode. In this condition, the output voltage will decrease proportionately with increases in output
current, thereby maintaining somewhat constant power dissipation. This is
commonly referred to as power limiting. Current limit inception is defined
as the point at which the full-power output voltage falls below the specified
tolerance. See Performance/Functional Specifications. If the load current,
being drawn from the converter, is significant enough, the unit will go into a
short circuit condition as described below.
Short Circuit Condition
When a converter is in current-limit mode, the output voltage will drop as
the output current demand increases. If the output voltage drops too low, the
magnetically coupled voltage used to develop primary side voltages will also
drop, thereby shutting down the PWM controller. Following a time-out period,
the PWM will restart causing the output voltage to begin ramping to their
appropriate value. If the short-circuit condition persists, another shutdown
cycle will be initiated. This on/off cycling is referred to as "hiccup" mode.
The hiccup cycling reduces the average output current, thereby preventing
internal temperatures from rising to excessive levels. The UHP Series is
capable of enduring an indefinite short circuit output condition.
Floating Outputs
Since these are isolated DC/DC converters, their outputs are "floating" with
respect to their input. Designers will normally 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.
Minimum Output Loading Requirements
UHP converters employ a synchronous-rectifier design topology and all
models regulate within spec and are stable under no-load to full load conditions. Operation under no-load conditions however might slightly increase the
output ripple and noise.
Thermal Shutdown
The UHP converters are equipped with thermal-shutdown circuitry. If environmental conditions cause the temperature of the DC/DC converter to
rise above the designed operating temperature, a precision temperature
sensor will power down the unit. When the internal temperature decreases
below the threshold of the temperature sensor, the unit will self start. See
Performance/Functional Specifications.
Output Overvoltage Protection
The UHP output voltage is monitored for an overvoltage condition using a
comparator. The signal is optically coupled to the primary side and if the
output voltage rises to a level which could be damaging to the load, the sens-
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MDC_UHP100w.B03 Page 5 of 10
UHP Series
Single Output, Isolated, Low VOUT to 60A
Half-Brick, DC/DC Converters
Features and Options
On/Off Control Function
Remote Sense
The input-side, remote On/Off Control function (pin 3) is specified to operate
with either positive (standard) or negative (optional) polarity.
Note: The Sense and VOUT lines are internally connected through resistors
( 10Ω). Nevertheless, if the sense function is not used for remote regulation
the user should connect the +Sense to +VOUT and –Sense to –VOUT at the
DC/DC converter pins.
UHP Series converters employ a sense feature to provide point of use regulation, thereby overcoming moderate IR drops in pcb conductors or cabling.
The remote sense lines carry very little current and therefore require minimal
cross-sectional-area conductors. The sense lines, which are capacitively
coupled to their respective output lines, are used by the feedback control-loop
to regulate the output. As such, they are not low impedance points and must
be treated with care in layouts and cabling. Sense lines on a pcb should be
run adjacent to dc signals, preferably ground. In cables and discrete wiring
applications, twisted pair or other techniques should be implemented.
UHP Series converters will compensate for drops between the output voltage
at the DC/DC and the sense voltage at the DC/DC provided that:
[VOUT (+) –VOUT (–)] –[Sense(+) –Sense (–)]
( 10% VOUT for 3.3V models)
5% VOUT
Output overvoltage protection is monitored at the output voltage pin, not
the Sense pin. Therefore, excessive voltage differences between VOUT and
Sense in conjunction with trim adjustment of the output voltage can cause the
overvoltage protection circuitry to activate (see Performance Specifications
for overvoltage limits). Power derating is based on maximum output current
and voltage at the converter's output pins. Use of trim and sense functions
can cause output voltages to increase, thereby increasing output power
beyond the conveter's specified rating, or cause output voltages to climb into
the output overvoltage region. Therefore, the designer must ensure:
(VOUT at pins) x (IOUT )
1
–INPUT
+OUTPUT
+SENSE
rated output power
Contact and PCB resistance
losses due to IR drops
5
6
IOUT
Standard models are equipped with Positive-polarity (no suffix). Positivepolarity devices are enabled when pin 3 is left open (or is pulled high, applying +3.5V to +VIN with respect to –Input, pin 1) and are disabled when pin 3
is pulled low (0 to 0.8V with respect to –Input).
"N" suffix models are specified with an optional Negative-polarity; these
devices are off when pin 3 is left open (or pulled high, applying +3.5V to
+VIN), and on when pin 3 is pulled low (0 to 0.8V) with respect to –Input.
See Figure 5.
Note: The On/Off Control Function excludes the Sync Function and vice versa.
4
+INPUT
EQUIVALENT CIRCUIT FOR
POSITIVE AND NEGATIVE
LOGIC MODELS
+
3
CONTROL
ON/OFF
CONTROL
REF
1
–INPUT
Figure 5. Driving the On/Off Control Pin
Dynamic control of the remote on/off function is best accomplished with
a mechanical relay or an open-collector/open-drain drive circuit (optically
isolated if appropriate). The drive circuit should be able to sink appropriate
current (see Performance Specifications) when activated and withstand
appropriate voltage 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.
Sense Current
3
ON/OFF
CONTROL
TRIM
7
LOAD
Sense Return
–SENSE
8
IOUT Return
4
+INPUT
–OUTPUT
9
Contact and PCB resistance
losses due to IR drops
Figure 4. Remote Sense Circuit Configuration
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MDC_UHP100w.B03 Page 6 of 10
UHP Series
Single Output, Isolated, Low VOUT to 60A
Half-Brick, DC/DC Converters
Trimming Output Voltage
1
UHP converters have a trim capability (pin 7) that allows users to adjust the
output voltage within the specified range. Adjustments to the output voltages
can be accomplished via a trim pot (Figure 7) or a single fixed resistor as
shown in Figures 8 and 9. A single fixed resistor can increase or decrease
the output voltage depending on its connection. The resistor should be
located close to the converter and have a TCR less than 100ppm/°C to minimize sensitivity to changes in temperature. If the trim function is not used,
leave the trim pin floating.
A single resistor connected from the Trim (pin 7) to the +Sense (pin 6), will
increase the output voltage (Figure 8). A resistor connected from the Trim (pin
9) to the –Sense (pin 8), will decrease the output voltage (Figure 9).
Trim adjustments greater than the specified range can have an adverse affect
on the converter's performance and are not recommended. Excessive voltage
differences between VOUT and Sense, in conjunction with trim adjustment of
the output voltage, can cause the overvoltage protection circuitry to activate
(see Performance Specifications for overvoltage limits). Power derating is
based on maximum output current and voltage at the converter's output pins.
Use of trim and sense functions can cause output voltages to increase,
thereby increasing output power beyond the converter's specified rating or
cause output voltages to climb into the output overvoltage region. Therefore:
–INPUT
+SENSE
2
ON/OFF
CONTROL
3
+INPUT
+OUTPUT
+SENSE
TRIM
3
4
ON/OFF
CONTROL
+INPUT
–SENSE
–OUTPUT
8
7
6
LOAD
RTRIM DOWN
–OUTPUT
5
4
Figure 8. Trim Connections To Decrease Output Voltages Using Fixed Resistors
Trim Equations
UHP-1.5/60-D48
RT UP (kΩ) =
6.23(VO – 1.226)
VO – 1.5
–10.2
RTDOWN (kΩ) =
7.64
1.5 – VO
–10.2
UHP-1.8/60-D48
RT UP (kΩ) =
7.44(VO – 1.226)
VO – 1.8
–10.2
RTDOWN (kΩ) =
9.12
1.8 – VO
–10.2
UHP-2.5/50-D48
RT UP (kΩ) =
–INPUT
TRIM
–SENSE
(VOUT at pins) x (IOUT ) <= rated output power
1
+OUTPUT
10(VO – 1.226)
VO – 2.5
–10.2
RTDOWN (kΩ) =
5
12.26
2.5 – VO
–10.2
UHP-3.3/45-D48
6
RT UP (kΩ) =
7
20kΩ
5-22
TURNS
13.3(VO – 1.226)
VO – 3.3
–10.2
RTDOWN (kΩ) =
16.31
3.3 – VO
–10.2
LOAD
Note: Resistor values are in kΩ. Accuracy of adjustment is subject to tolerances or resistor values and factory-adjusted output accuracy.
VO = desired output voltage.
8
9
Figure 6. Trim Connections Using A Trim Pot
1
–INPUT
+OUTPUT
+SENSE
2
ON/OFF
CONTROL
TRIM
+INPUT
7
6
LOAD
RTRIM UP
–SENSE
3
8
–OUTPUT
5
4
Figure 7. Trim Connections To Increase Output Voltages Using Fixed Resistors
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MDC_UHP100w.B03 Page 7 of 10
UHP Series
Single Output, Isolated, Low VOUT to 60A
Half-Brick, DC/DC Converters
Typical Performance Curves for UHP 1.8VOUT Models
UHP-1.8/60-D48 Efficiency vs. Line Voltage and Load Current
UHP-1.8/60-D48 Temperature Derating
VIN = 48V (air flow direction from intput pins to output pins)
90
70
60
Output Current (Amps)
Efficiency (%)
85
80
VIN = 36V
75
VIN = 48V
VIN = 60V
70
50
40
30
100 lfm
200 lfm
300 lfm
1350 lfm
400 lfm
20
10
65
VIN = 75V
0
0
60
5
10
15
20
25
30
35
40
45
50
55
60
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (°C)
Load Current (Amps)
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MDC_UHP100w.B03 Page 8 of 10
UHP Series
Single Output, Isolated, Low VOUT to 60A
Half-Brick, DC/DC Converters
Typical Performance Curves for UHP 3.3VOUT Models
UHP-3.3/45-D48 Efficiency vs. Line Voltage and Load Current
UHP-3.3/45-D48 Temperature Derating
VIN = 48V (air flow direction from intput pins to output pins)
95
50
90
45
40
80
Output Current (Amps)
Efficiency (%)
85
VIN = 36V
VIN = 48V
75
VIN = 60V
70
35
30
25
100 lfm
20
200 lfm
300 lfm
400 lfm
15
10
VIN = 75V
65
5
0
20
60
4
8
12
16
20
24
28
32
36
40
45
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (°C)
Load Current (Amps)
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MDC_UHP100w.B03 Page 9 of 10
UHP Series
Single Output, Isolated, Low VOUT to 60A
Half-Brick, DC/DC Converters
Options and Adaptations
Optional Functions and Part Number Suffixes
Adaptations
The UHP series of Half-Brick DC/DC converters offer numerous electrical
and mechanical options. Per the Ordering Guide on page 2, the trailing D48
(standing for 48VIN) in each part number pertains to the base part number.
Part-number suffixes are added after this input identification, indicating the
selection of standard options. The resulting part number is a "standard
product" and is available to any customer desiring that particular combination
of options.
There are various additional configurations available on UHP series of
DC/DC's. Because designating each of them with a standard part-number
suffix is not always feasible, such are designated by DATEL in assigning a
5-digit "adaptation code" after the part-number suffixes. Once a configuration
has been requested by a customer and created by DATEL, the resulting product is available to any customer as a "standard" off-the-shelf product. Contact
DATEL directly if you are interested in your own set of options/adaptations.
Our policy for minimum order quantities may apply.
Contact DATEL directly if you are interested in your own set of options/
adaptations.
UHP - 1.8 / 60 - D48 N Lx
Unipolar
High-Power Series
Optional Functions
Nominal Output Voltage:
1.5 to 12 Volts
Maximum Output Current:
60 Amps
Input Voltage Range:
D48 = 36-75 Volts (48V nominal)
The On/Off Control function on pin 3 employs a positive polarity (on = open
or "high," no suffix). To request a negative polarity on this pin/function, add an
"N" suffix to the part number and to request a Sync function to synchronize
the switching frequency of two modules with an external clock, add an "S"
suffix (excludes On/Off Control). All standard models feature remote sense.
See below.
Suffix
Description
Blank
Positive polarity On/Off Control function (pin 3), Vout trim (pin 7),
Remote Sense, pin length 0.160 inches (4.06 mm).
N
Add Negative polarity on the On/Off Control function, no Sync,
VOUT trim (pin 7).
S
Sync function (pin 3), no On/Off Control, Vout trim (pin 7)
L1
Trim the pin length to 0.110 ±0.010 inches (2.79 ±0.25mm). This
option requires a 100-piece minimum order quantity.
L2
Trim the pin length to 0.145 ±0.010 inches (3.68 ±0.25mm). This
option requires a 100-piece minimum order quantity.
USA:
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: sales@murata-ps.com ISO 9001 and 14001 REGISTERED
08/03/09
Murata Power Solutions, Inc. 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.
© 2009 Murata Power Solutions, Inc.
Mansfield (MA), Tel: (508) 339-3000, email: sales@murata-ps.com
Canada:
Toronto, Tel: (866) 740-1232, email: toronto@murata-ps.com
UK:
Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com
France:
Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com
Germany:
München, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com
Japan:
Tokyo, Tel: 81-3-3779-1031, email: japan@murata-ps.com
Kyoto, Tel: 81-75-955-7269, email: japan@murata-ps.com
China:
Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com
Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
Singapore:
Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com
4/25/08
www.murata-ps.com
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
Technical
enquiries
email:
sales@murata-ps.com,
tel: +1contained
508 339herein
3000
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.
MDC_UHP100w.B03 Page 10 of 10