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ULE-1.5/20-D48PM

更新时间： 2024-02-14 00:10:48
品牌 Logo 应用领域
村田 - MURATA 电源电路
页数 文件大小 规格书
23页 535K
描述
民用设备,工业设备

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ULE-1.5/20-D48PM 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：MODULE包装说明：,
针数：8Reach Compliance Code：unknown
ECCN代码：EAR99风险等级：5.74
Is Samacsys：N模拟集成电路 - 其他类型：DC-DC REGULATED POWER SUPPLY MODULE
最大输入电压：75 V最小输入电压：36 V
标称输入电压：48 VJESD-30 代码：R-XDMA-T8
JESD-609代码：e4最大负载调整率：0.25%
功能数量：1输出次数：1
端子数量：8最大输出电压：1.32 V
最小输出电压：0.96 V标称输出电压：1.2 V
封装主体材料：UNSPECIFIED封装形状：RECTANGULAR
封装形式：MICROELECTRONIC ASSEMBLY峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified表面贴装：NO
技术：HYBRID端子面层：GOLD OVER NICKEL
端子形式：THROUGH-HOLE端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED最大总功率输出：36 W
微调/可调输出：YESBase Number Matches：1

ULE-1.5/20-D48PM 数据手册

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ULE Series  
Isolated, High Density, Eighth-Brick  
1.25–30 Amp, DC/DC Converters  
Start-Up Time  
Absolute Maximum Ratings  
The VIN to VOUT Start-Up Time is the interval of time between the point at which  
the ramping input voltage crosses the Start-Up Threshold and the fully loaded  
output voltage enters and remains within its specified accuracy band. Actual  
measured times will vary with input source impedance, external input/output  
capacitance, and load. The ULE Series implements a soft start circuit that limits  
the duty cycle of its PWM controller at power up, thereby limiting the input  
inrush current.  
Input Voltage:  
Continuous:  
12 Volt input models  
24 Volt input models  
48 Volt input models  
Transient (100 mSec. Max.)  
12 Volt input models  
18 Volts  
36 Volts  
75 Volts  
25 Volts  
50 Volts  
100 Volts  
24 Volt input models  
48 Volt input models  
The On/Off Control to VOUT start-up time assumes the converter has its  
nominal input voltage applied but is turned off via the On/Off Control pin. The  
specification defines the interval between the point at which the converter is  
turned on and the fully loaded output voltage enters and remains within its  
specified accuracy band. Similar to the VIN to VOUT start-up, the On/Off Control  
to VOUT start-up time is also governed by the internal soft start circuitry and  
external load capacitance.  
On/Off Control (pin 2)  
See specifications  
Input Reverse Polarity Protection  
Output Overvoltage Protection  
Output Current *  
5 Amps, 10 sec. max.  
Magnetic feedback. See note (7).  
Current-limited. Devices can with stand  
sustained short circuit without damage.  
Storage Temperature  
Lead Temperature  
–55 to +125°C.  
Refer to solder profile.  
The difference in start up time from VIN to VOUT and from On/Off Control to  
VOUT is therefore insignificant.  
These are stress ratings. Exposure of devices to greater than any of these conditions  
may adversely affect long-term reliability. Proper operation under conditions other than  
those listed in the Performance/Functional Specifications Table is not implied.  
Input Source Impedance  
ULE converters must be driven from a low ac-impedance input source. The  
DC/DC’s performance and stability can be compromised by the use of highly  
inductive source impedances. The input circuit shown in Figure 2 is a practical  
solution that can be used to minimize the effects of inductance in the input  
traces. For optimum performance, components should be mounted close to  
the DC/DC converter. If the application has a high source impedance, low VIN  
models can benefit of increased external input capacitance.  
ꢀ The outputs are not intended to sink appreciable current.  
TECHNICAL NOTES  
Input Fusing  
I/O Filtering, Input Ripple Current, and Output Noise  
Certain applications and/or safety agencies may require the installation of  
fuses at the inputs of power conversion components. Fuses should also be  
used if the possibility of sustained, non-current-limited, input-voltage polarity  
reversals exist. For MPS ULE 24-60 Watt DC/DC Converters, you should use  
slow-blow type fuses, installed in the ungrounded input supply line, with values  
no greater than the following.  
All models in the ULE 24-60 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 (CIN in Figure 2) serve primarily as energy-storage  
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, CBUS and LBUS simulate a typical dc voltage bus. Your  
specific system configuration may necessitate additional considerations.  
Model  
Fuse Values  
10 Amps  
5 Amps  
12 Volt Input  
24 Volt input  
48 Volt Input  
4 Amps  
All relevant national and international safety standards and regulations must  
be observed by the installer. For system safety agency approvals, the convert-  
ers must be installed in compliance with the requirements of the end-use  
safety standard, e.g., IEC/EN/UL60950-1.  
TO  
CURRENT  
PROBE  
OSCILLOSCOPE  
Input Undervoltage Shutdown and Start-Up Threshold  
+INPUT  
Under normal start-up conditions, devices will not begin to regulate until  
the ramping-up input voltage exceeds the Start-Up Threshold Voltage. Once  
operating, devices will not turn off until the input voltage drops below the  
Undervoltage Shutdown limit. Subsequent re-start will not occur until the input  
is brought back up to the Start-Up Threshold. This built in hysteresis prevents  
any unstable on/off situations from occurring at a single input voltage.  
LBUS  
+
VIN  
CBUS  
CIN  
–
–INPUT  
CIN = 33μF, ESR < 700mΩ @ 100kHz  
CBUS = 220μF, ESR < 100mΩ @ 100kHz  
LBUS = 12μH  
Figure 2. Measuring Input Ripple Current  
www.murata-ps.com  
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000  
MDC_ULE Series.C11 Page 8 of 23  
1...567891011...23

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