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UWR-5-3000-D48A-C Datasheet, PDF (5/12 Pages) Murata Manufacturing Co., Ltd. – Single Output, High-Density, 6 Amp/15 Watt DC/DC Converters | |||
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UWR Models
Single Output, High-Density,
6 Amp/15 Watt DC/DC Converters
Model
UWR-1.2/6000-D12A
UWR-1.2/6000-D24A
UWR-1.2/6000-D48A
UWR-1.5/6000-D12A
UWR-1.5/6000-D24A
UWR-1.5/6000-D48A
UWR-1.8/6000-D12A
UWR-1.8/6000-D24A
UWR-1.8/6000-D48A
UWR-2.5/6000-D12A
UWR-2.5/6000-D24A
UWR-2.5/6000-D48A
UWR-3.3/4250-D12A
UWR-3.3/4250-D24A
UWR-3.3/4250-D48A
Trim Equation
RTDOWN (k7) =
5.32(VO â 0.7)
1.2 â VO
â2
RTUP (k7) =
3.73
VO â 1.2
â2
RTDOWN (k7) =
1.6(VO â 1.23)
1.5 â VO
â2
RTUP (k7) =
1.968
VO â 1.5
â2
RTDOWN (k7) =
0.995(VO â 1.24)
1.8 â VO
â2.49
RTUP (k7) =
RTDOWN (k7) =
1.23 â2.49
VO â 1.8
2(VO â 1.24) â11
2.5 â VO
RTUP (k7) =
2.48
VO â 2.5
â11
RTDOWN (k7) =
2.49(VO â 1.27)
3.3 â VO
â16.9
3.16
RTUP (k7) = VO â 3.3
â16.9
Model
UWR-3.3/4500-D48ANT
UWR-5/3000-D12A
UWR-5/3000-D24A
UWR-5/3000-D48A
UWR-5/3000-D48ANST
UWR-12/1250-D12A
UWR-12/1250-D24A
UWR-12/1250-D48A
UWR-15/1000-D12A
UWR-15/1000-D24A
UWR-15/1000-D48A
Trim Equation
RTDOWN (k7) =
1.27 â8.25
K
3.3 â VO
where K =
3.3
RTUP (k7) =
0.78 â6.2
K
VO â 3.3
where K =
3.3
RTDOWN (k7) =
2.49(VO â 2.527)
5 â VO
â15
RTUP (k7) =
6.292
VO â 5
â15
RTDOWN (k7) =
7.5(VO â 1.24)
5.0 â VO
RTUP (k7) =
9.3
VO â 4.997
â10
RTDOWN (k7) =
6.34(VO â 5.714)
12 â VO
â49.9
RTUP (k7) =
36.23
VO â 12
â49.9
RTDOWN (k7) =
7.87(VO â 7.136)
15 â VO
â63.4
RTUP (k7) =
56.16
VO â 15
â63.4
Soldering Guidelines
Murata Power Solutions recommends the speciï¬cations below when install-
ing these converters. These speciï¬cations vary depending on the solder type.
Exceeding these speciï¬cations may cause damage to the product. Be cautious
when there is high atmospheric humidity. Your production environment may
differ; therefore please thoroughly review these guidelines with your process
engineers.
Wave Solder Operations for through-hole mounted products (THMT)
For Sn/Ag/Cu based solders:
Maximum Preheat Temperature
115° C.
Maximum Pot Temperature
270° C.
Maximum Solder Dwell Time
7 seconds
For Sn/Pb based solders:
Maximum Preheat Temperature
105° C.
Maximum Pot Temperature
250° C.
Maximum Solder Dwell Time
6 seconds
www.murata-ps.com/support
Start-Up Threshold and Undervoltage Shutdown
Under normal start-up conditions, devices will not begin to regulate until the
ramping-up input voltage exceeds the Start-Up Threshold Voltage (35V for
"D48A" models). Once operating, devices will not turn off until the input volt-
age drops below the Undervoltage Shutdown/Lockout limit (34V for "D48A"
models). Subsequent re-start will not occur until the input is brought back up to
the Start-Up Threshold. This built-in hysteresis obviously avoids any indetermi-
nate on/off situations at a single voltage.
Start-Up Time
The VIN to VOUT Start-Up Time is the interval between the time at which a ramp-
ing input voltage crosses the turn-on threshold point and the fully-loaded output
voltage enters and remains within its speciï¬ed accuracy band. Actual measured
times will vary with input source impedance, external input capacitance, and the
slew rate and ï¬nal value of the input voltage as it appears to the converter.
The On/Off to VOUT Start-Up Time assumes the converter is turned off via the
On/Off Control with the nominal input voltage already applied to the converter.
The speciï¬cation deï¬nes the interval between the time at which the converter
is turned on and the fully-loaded output voltage enters and remains within its
speciï¬ed accuracy band.
Accuracy of adjustment is subject to tolerances or resistor values and
factory-adjusted output accuracy. VO = desired output voltage.
MDC_UWR_7-15.G04 Page 5 of 12
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