UHE-5/6000-Q48T-C Murata Power Solutions Inc, UHE-5/6000-Q48T-C Datasheet - Page 5

• Manufacturer Part Number: UHE-5/6000-Q48T-C
• Description: CONV DC/DC 6A 5V T/H
• Manufacturer: Murata Power Solutions Inc
• Series: UHEr
• Type: Isolatedr

Specifications of UHE-5/6000-Q48T-C

• Number Of Outputs: 1
• Output: 5V
• Power (watts): 30W
• Mounting Type: Through Hole
• Voltage - Input: 18 ~ 75V
• Package / Case: 9-DIP Module (7 Leads)
• 1st Output: 5 VDC @ 6A
• Size / Dimension: 2.00" L x 1.60" W x 0.40" H (50.8mm x 40.6mm x 10.2mm)
• Power (watts) - Rated: 30W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 86%
• Approvals: CE, cUL, EN, UL
• Output Power: 30 W
• Input Voltage Range: 18 V to 75 V
• Input Voltage (nominal): 48 V
• Output Voltage (channel 1): 5 V
• Output Current (channel 1): 6 A
• Isolation Voltage: 1.5 KV
• Package / Case Size: 1.6 in X 2 in
• Dc / Dc Converter O/p Type: Single
• No. Of Outputs: 1
• Input Voltage: 18V To 75V
• Power Rating: 30W
• Output Voltage: 5V
• Output Current: 6A
• Approval Bodies: CE / EN / UL
• Supply Voltage: 48V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 811-1885-5

I/O Filtering, Input Ripple Current, and Output Noise
All models in the UHE 2-30 Watt DC/DC Converters 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 (C
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-
ripple-current 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, C
typical dc voltage bus. Your specific system configuration may necessitate
additional considerations.
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. These output caps function as true filter ele-
ments and should be selected for bulk capacitance, low ESR and appropri-
ate 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.
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 filter-
ing to meet your specific requirements. Contact our Applications Engineer-
ing Group for additional details.
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 less than ½ inch and soldered directly to the
fixture.
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 7) as the
ground/return of the load circuit. You can, however, use the +Output (pin 6)
as ground/return to effectively reverse the output polarity.
www.cd4power.com
P O W E R E L E C T R O N I C S D I V I S I O N
V
OSCILLOSCOPE
IN
+
–
C
C
L
TO
BUS
IN
BUS
= 33µF, ESR < 700m
= 12µH
= 220µF, ESR < 100m
Figure 2. Measuring Input Ripple Current
C
BUS
L
IN
BUS
in Figure 2) serve primarily as energy-storage
@ 100kHz
CURRENT
@ 100kHz
PROBE
C
IN
BUS
+INPUT
–INPUT
and L
BUS
simulate a
Isolated, High Efficiency, .6" x 2" 2-0 Amp, 2-30 Watt DC/DC's
Minimum Output Loading Requirements
UHE converters employ a synchronous-rectifier design topology and all
models regulate within spec and are stable under no-load to full load con-
ditions. Operation under no-load conditions however might slightly increase
the output ripple and noise.
Thermal Shutdown
These UHE converters are equipped with thermal-shutdown circuitry. If
environmental conditions cause the internal 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 tempera-
ture decreases below the threshold of the temperature sensor, the unit will
self start. See Performance/Functional Specifications.
Output Overvoltage Protection
UHE output voltages are monitored for an overvoltage condition via mag-
netic feedback. The signal is coupled to the primary side and if the output
voltage rises to a level which could be damaging to the load, the sensing
circuitry will power down the PWM controller causing the output voltages
to decrease. Following a time-out period the PWM will restart, causing the
output voltages to ramp to their appropriate values. If the fault condi-
tion persists, and the output voltages again climb to excessive levels, the
overvoltage circuitry will initiate another shutdown cycle. This on/off cycling
is referred to as "hiccup" mode.
Contact DATEL for an optional output overvoltage monitor circuit using a
comparator which is optically coupled to the primary side thus allowing
tighter and more precise control.
Current Limiting
As soon as the output current increases to 0% to 50% above 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 specified under "Performance."
Figure 3. Measuring Output Ripple/Noise (PARD)
+OUTPUT
–OUTPUT
+SENSE
–SENSE
C1 = 0.47µF CERAMIC
C2 = NA
LOAD 2-3 INCHES (51-76mm) FROM MODULE
C1
COPPER STRIP
COPPER STRIP
C2
D C / D C C O N V E R T E R S
UHE Series
MDC_UHE_A03
SCOPE
R
LOAD
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