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| 型号： | UEI15-050-Q12P-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 12/17页 |
| 文件大小： | 0K |
| 描述： | CONV DC/DC 15W 5V 3A |
| 产品培训模块： | Medium Power Industrial DC/DC Converters 5 ~ 60W UEI Series DC-DC Converter |
| 标准包装： | 90 |
| 系列： | UEI15 |
| 类型： | 隔离 |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 9V |
| 电压 - 输入（最大）： | 36V |
| Voltage - Output 1： | 5V |
| 电流 - 输出（最大）： | 3A |
| 电源（瓦） - 制造商系列： | 15W |
| 电压 - 隔离： | 2.25kV（2250V） |
| 安装类型： | 通孔 |
| 封装/外壳： | 6-DIP 模块 |
| 尺寸/尺寸： | 1.10" L x 0.96" W x 0.32" H（27.9mm x 24.4mm x 8.1mm） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 87.3% |
| 电源（瓦特）- 最大： | 15W |
| 产品目录页面： | 2721 (CN2011-ZH PDF) |
| 其它名称： | 811-1866-5 |
UEI15 Series
Isolated Wide Input Range 15-Watt DC/DC Converters
TECHNICAL NOTES
Input Fusing
Certain applications and/or safety agencies may require fuses at the inputs of
power conversion components. Fuses should also be used when there is the
possibility of sustained input voltage reversal which is not current-limited. For
greatest safety, we recommend a fast blow fuse installed in the ungrounded
input supply line.
The installer must observe all relevant safety standards and regulations. For
safety agency approvals, install the converter in compliance with the end-user
safety standard, i.e. IEC/EN/UL 60950-1.
Input Reverse-Polarity Protection
If the input voltage polarity is reversed, an internal diode will become forward
biased and likely draw excessive current from the power source. If this source
is not current-limited or the circuit appropriately fused, it could cause perma-
nent damage to the converter.
Input Under-Voltage Shutdown and Start-Up Threshold
Under normal start-up conditions, converters will not begin to regulate properly
until the ramping-up input voltage exceeds and remains at the Start-Up
Threshold Voltage (see Speci?cations). Once operating, converters will not
turn off until the input voltage drops below the Under-Voltage Shutdown Limit.
Subsequent restart will not occur until the input voltage rises again above the
Start-Up Threshold. This built-in hysteresis prevents any unstable on/off opera-
tion at a single input voltage.
Users should be aware however of input sources near the Under-Voltage
Shutdown whose voltage decays as input current is consumed (such as capaci-
tor inputs), the converter shuts off and then restarts as the external capacitor
recharges. Such situations could oscillate. To prevent this, make sure the oper-
ating input voltage is well above the UV Shutdown voltage AT ALL TIMES.
Start-Up Time
put voltage regulation. Since real-world voltage sources have ?nite impedance,
performance is improved by adding external ?lter components. Sometimes 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.
TO
V IN
Assuming that the output current is set at the rated maximum,theV IN toV OUT
Start-Up Time (see Speci?cations) is the time interval between the point when
the ramping input voltage crosses the Start-Up Threshold and the fully loaded
regulated output voltage enters and remains within its speci?ed accuracy band.
Actual measured times will vary with input source impedance, external input
OSCILLOSCOPE
+
–
+
C BUS
L BUS
CURRENT
PROBE
C IN
+VIN
capacitance, input voltage slew rate and ?nal value of the input voltage as it
appears at the converter.
These converters include a soft start circuit to moderate the duty cycle of its
PWM controller at power up, thereby limiting the input inrush current.
The On/Off Remote Control interval from On command to V OUT regulated
assumes that the converter already has its input voltage stabilized above the
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 accuracy
band. The speci?cation assumes that the output is fully loaded at maximum
rated current. Similar conditions apply to the On to V OUT regulated speci?cation
such as external load capacitance and soft start circuitry.
Input Source Impedance
These converters will operate to speci?cations without external components,
assuming that the source voltage has very low impedance and reasonable in-
–
-VIN
C IN = 33μF, ESR < 700mΩ @ 100kHz
C BUS = 220μF, ESR < 100mΩ @ 100kHz
L BUS = 12μH
Figure 2. Measuring Input Ripple Current
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
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MDC_UEI15W.C14 Page 12 of 17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| UEI15-050-Q12P-C | 制造商:Murata Power Solutions 功能描述:DC/DC Converter 制造商:Murata Power Solutions 功能描述:DC-DC CONV, ISO POL, 1 O/P, 15W, 3A, 5V |
| UEI15-050-Q12PM-C | 功能描述:DC/DC转换器 15W 24Vin 5Vout 3A Pos Polarity SMT RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| UEI15-050-Q48 | 制造商:MURATA 制造商全称:Murata Manufacturing Co., Ltd. 功能描述:Isolated Wide Input Range 15-Watt DC/DC Converters |
| UEI15-050-Q48N-C | 功能描述:DC/DC转换器 48Vin 5Vout 3A 15W Neg polarity RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| UEI15-050-Q48NM-C | 功能描述:DC/DC转换器 15W 48Vin 5Vout 3A Neg Polarity SMT RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
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