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| 型号： | UEE-3.3/25-D48P-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 25/29页 |
| 文件大小： | 0K |
| 描述： | 36-75VIN 3.3VOUT 83W POS LOGIC |
| 标准包装： | 42 |
| 系列： | UEE |
| 类型： | 隔离 |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 36V |
| 电压 - 输入（最大）： | 75V |
| Voltage - Output 1： | 3.3V |
| 电流 - 输出（最大）： | 25A |
| 电源（瓦） - 制造商系列： | 82W |
| 电压 - 隔离： | 2.25kV（2250V） |
| 特点： | 具有远程开/关功能 |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP 模块，1/8 砖 |
| 尺寸/尺寸： | 2.30" L x 0.90" W x 0.40" H（58.4mm x 22.9mm x 10.1mm） |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 90% |
| 电源（瓦特）- 最大： | 82.5W |
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UEE Series
Isolated, High-Density, Eighth-Brick
DOSA Low Pro?le DC-DC Converters
Start-Up Threshold before the On command. The interval is measured from
the On command until the output enters and remains within its speci?ed
regulation band. The speci?cation assumes that the output is fully loaded at
maximum rated current.
+SENSE
+VOUT
Input Source Impedance
These converters will operate to speci?cations without external components,
C1
C2
SCOPE
R LOAD
assuming that the source voltage has very low impedance and reasonable
input voltage regulation. Since real-world voltage sources have ?nite imped-
ance, performance is improved by adding external ?lter components. Some-
times only a small ceramic capacitor is suf?cient. Since it is dif?cult to totally
characterize all applications, some experimentation may be needed. Note that
external input capacitors must accept high speed switching currents.
Because of the switching nature of DC-DC converters, the input of these
converters must be driven from a source with both low AC impedance and
adequate DC input regulation. Performance will degrade with increasing input
inductance. Excessive input inductance may inhibit operation. The DC input
regulation speci?es that the input voltage, once operating, must never degrade
below the Shut-Down Threshold under all load conditions. Be sure to use
adequate trace sizes and mount components close to the converter.
I/O Filtering, Input Ripple Current and Output Noise
All models in this converter series are tested and speci?ed for input re?ected
ripple current and output noise using designated external input/output compo-
nents, circuits and layout as shown in the ?gures below. External input capaci-
tors (Cin in the ?gure) serve primarily as energy storage elements, minimizing
line voltage variations caused by transient IR drops in the input conductors.
Users should select input capacitors for bulk capacitance (at appropriate
frequencies), low ESR and high RMS ripple current ratings. In the ?gure below,
the Cbus and Lbus components simulate a typical DC voltage bus. Your speci?c
system con?guration may require additional considerations. Please note that the
values of Cin, Lbus and Cbus will vary according to the speci?c converter model.
In critical applications, output ripple and noise (also referred to as periodic
and random deviations or PARD) may be reduced by adding ?lter elements
such as multiple external capacitors. Be sure to calculate component tempera-
ture rise from re?ected AC current dissipated inside capacitor ESR.
?VOUT
?SENSE
C1 = 1μF
C2 = 10μF
LOAD 2-3 INCHES (51-76mm) FROM MODULE
Figure 8. Measuring Output Ripple and Noise (PARD)
Floating Outputs
Since these are isolated DC-DC converters, their outputs are “?oating” with
respect to their input. The essential feature of such isolation is ideal ZERO
CURRENT FLOW between input and output. Real-world converters however do
exhibit tiny leakage currents between input and output (see Speci?cations).
These leakages consist of both an AC stray capacitance coupling component
and a DC leakage resistance. When using the isolation feature, do not allow
the isolation voltage to exceed speci?cations. Otherwise the converter may
be damaged. Designers will normally use the negative output (-Output) as
the ground return of the load circuit. You can however use the positive output
(+Output) as the ground return to effectively reverse the output polarity.
Minimum Output Loading Requirements
All models regulate within speci?cation and are stable under no load to full
load conditions. Operation under no load might however slightly increase
output ripple and noise.
Thermal Shutdown
To protect against thermal overstress, these converters include thermal
shutdown circuitry. If environmental conditions cause the temperature of the
DC-DC’s to rise above the Operating Temperature Range up to the shutdown
temperature, an on-board electronic temperature sensor will power down
the unit. When the temperature decreases below the turn-on threshold, the
TO
OSCILLOSCOPE
+
L BUS
CURRENT
PROBE
+VIN
converter will automatically restart. There is a small amount of hysteresis to
prevent rapid on/off cycling. The temperature sensor is typically located adja-
cent to the switching controller, approximately in the center of the unit. See the
Performance and Functional Speci?cations.
V IN
–
+
–
C BUS
C IN
CAUTION: If you operate too close to the thermal limits, the converter may
shut down suddenly without warning. Be sure to thoroughly test your applica-
C IN = 33μF, ESR < 700mΩ @ 100kHz
C BUS = 220μF, ESR < 100mΩ @ 100kHz
L BUS = 12μH
Figure 7. Measuring Input Ripple Current
?VIN
tion to avoid unplanned thermal shutdown.
Temperature Derating Curves
The graphs in this data sheet illustrate typical operation under a variety of
conditions. The Derating curves show the maximum continuous ambient air
temperature and decreasing maximum output current which is acceptable
under increasing forced air?ow measured in Linear Feet per Minute (“LFM”).
Note that these are AVERAGE measurements. The converter will accept brief
increases in current or reduced air?ow as long as the average is not exceeded.
www.murata-ps.com/support
MDC_UEE_Series.C01 Page 25 of 29
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相关代理商/技术参数 |
参数描述 |
|---|---|
| UEE-5/30-D48NB-C | 功能描述:DC/DC CONVERTER 5V 150W 制造商:murata power solutions inc. 系列:UEE 150W 包装:托盘 零件状态:有效 类型:隔离模块 输出数:1 电压 - 输入（最小值）:36V 电压 - 输入（最大值）:75V 电压 - 输出 1:5V 电压 - 输出 2:- 电压 - 输出 3:- 电流 - 输出（最大值）:30A 功率（W） - 制造系列:150W 电压 - 隔离:2.25kV（2250V） 应用:ITE（商业） 特性:远程开/关，OCP，OTP，SCP，UVLO 安装类型:通孔 封装/外壳:8-DIP 模块，1/8 砖 大小/尺寸:2.30" 长 x 0.90" 宽 x 0.50" 高（58.4mm x 22.9mm x 12.7mm） 工作温度:-40°C ~ 85°C 效率:92% 功率（W） - 最大值:150W 标准包装:21 |
| UEF-AUTOESL-25 | 制造商:Xilinx 功能描述:UNIVERSITY AUTOESL, 25 LICENSE BUNDLE - Virtual or Non-Physical Inventory (Software & Literature) 制造商:Xilinx 功能描述:AUTOESL 25 LICENSE BUNDLE |
| UEF-AUTOESL-50 | 制造商:Xilinx 功能描述:AUTOESL 50 LICENSE BUNDLE |
| UEF-ISE-DSP-25 | 制造商:Xilinx 功能描述:ISE DESIGN SUITE DSP 25 LICENSE |
| UEF-ISE-DSP-50 | 制造商:Xilinx 功能描述:ISE DESIGN SUITE DSP 50 LICENSE |
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