UHE-5/5000-Q48-C Murata Power Solutions Inc, UHE-5/5000-Q48-C Datasheet - Page 15

• Manufacturer Part Number: UHE-5/5000-Q48-C
• Description: DC/DC Converters & Regulators 25W 48V to 5V 5A
• Manufacturer: Murata Power Solutions Inc
• Series: UHEr

Specifications of UHE-5/5000-Q48-C

• Output Power: 25 W
• Input Voltage Range: 18 V to 75 V
• Input Voltage (nominal): 48 V
• Number Of Outputs: 1
• Output Voltage (channel 1): 5 V
• Output Current (channel 1): 5 A
• Isolation Voltage: 1.5 KV
• Package / Case Size: 1.6 in X 2 in
• Product: Isolated
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: UHE-5/5000-Q48-C

R1 (k ) =
R1 (k ) =
R1 (k ) =
R1 (k ) =
R1 (k ) =
R1 (k ) =
R1 (k ) =
R1 (k ) =
R1 (k ) =
R1 (k ) = (2.54/y – 4.08)/2
R1 (k ) = 1.25/y – 2.69
where y = (3.3 – V
where y = (5 – V
Trim Down
1.027(V
0.459(V
0.4432(V
2.226(V
2.15(V
3.21(V
Trim Up
13.3(V
13.3(V
UHE-5/6000-Q48T, -D48T (Quantity order only)
10(V
UHE-5/5000-Q12, -Q48, UHE-5/6000-D48, -Q48
1.8 – V
5 – V
1.5 – V
3.3 – V
2.5 – V
V
12 – V
15 – V
15 – V
UHE-3.3/7500-D48T (Quantity order only)
UHE-12/2500-D12, -D24, -D48, -Q12, -Q48
O
O
O
O
O
O
– 1.2
O
O
– 0.9352)
– 2.592)
– 0.7096)
O
O
– 0.9625)
– 1.759)
O
– 2.5)
– 0.397)
– 2.5)
– 2.5)
UHE-1.8/10000-D12, -D24, -D48
UHE-2.5/10000-D12, -D24, -D48
O
UHE-1.2/10000-D12, -D24, -D48
UHE-1.5/10000-D12, -D24, -D48
O
O
O
O
O
O
UHE-3.3/7500-Q12, -Q24, -D48
UHE-15/2000-D12, -D24, -D48
O
)/5
UHE-15/2000-Q12, -Q48
O
Trim Equations
)/3.3
– 34.8
– 38.3
– 34.8
– 1.413
– 7.596
– 15.52
– 3.169
– 22.42
– 7.503
R2 (k ) =
R2 (k ) =
R2 (k ) =
R2 (k ) =
R2 (k ) =
R2 (k ) =
R2 (k ) =
R2 (k ) =
R2 (k ) =
where y = (V
where y = (V
R2 (k ) = 1.55/2y
R2 (k ) = 1.25/y
Trim Down
Trim Up
V
V
V
1.2 – V
V
V
V
V
0.9647
0.3232
37.875
37.875
V
2.142
0.397
O
5.58
O
O
O
29.5
O
O
O
5.65
O
O
– 1.8
– 1.5
– 2.5
– 3.3
– 15
– 15
– 12
– 5
– 3.3)/3.3
O
– 5)/5
O
www.murata-ps.com
– 7.596
– 1.413
– 3.169
– 7.503
– 22.42
– 38.3
– 34.8
– 15.52
– 34.8
on the converter's performance and are not recommended. Excessive voltage
differences between V
output voltage, can cause the overvoltage protection circuitry to activate (see
Performance Specifi cations 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 specifi ed rating or cause output voltages
to climb into the output overvoltage region. Therefore:
Note: Resistor values are in kΩ. Adjustment accuracy is subject to resistor
tolerances and factory-adjusted output accuracy. V
Remote Sense (Optional on 1.2-5V
Note: The Sense and V
tors. Nevertheless, if the sense function is not used for remote regulation the
user should connect the +Sense to +V
converter pins.
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 are used by the feedback control-loop to regu-
late 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.
at the DC/DC and the sense voltage at the DC/DC provided that:
the Sense pin. Therefore, excessive voltage differences between V
Sense in conjunction with trim adjustment of the output voltage can cause the
overvoltage protection circuitry to activate (see Performance Specifi cations
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 UHE’s specifi ed rating or cause output voltages to climb into the output
overvoltage region. Therefore, the designer must ensure:
Trim adjustments greater than the specifi ed ±5% can have an adverse affect
UHE series converters have a sense feature to provide point of use regulation,
UHE series converters will compensate for drops between the output voltage
Output overvoltage protection is monitored at the output voltage pin, not
[V
(V
OUT
OUT
2
4
1
(+) –V
–INPUT
ON/OFF
CONTROL
+INPUT
at pins) × (I
(V
Figure 9. Remote Sense Circuit Confi guration
OUT
2-10 Amp, 12-30 Watt DC/DC Converters
OUT
28 Mar 2011 MDC_UHE_12-30W Series.B16 Page 15 of 16
OUT
OUT
at pins) x (I
(–)] –[Sense(+) –Sense (–)] d 5% V
and Sense, in conjunction with trim adjustment of the
lines are internally connected through 10: resis-
OUT
Isolated, High Effi ciency, 1.6" × 2"
+OUTPUT
–OUTPUT
+SENSE
–SENSE
) d rated output power
TRIM
OUT
OUT
) < = rated output power
OUT
6
8
models)
5
9
7
Contact and PCB resistance
Contact and PCB resistance
and –Sense to –V
losses due to IR drops
losses due to IR drops
Sense Current
Sense Return
I
OUT
I
email: [e-mail]
OUT
O
UHE Series
= desired output voltage.
Return
LOAD
OUT
at the DC/DC
OUT
OUT
and