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| 型号： | ULS-15/2-D48N-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 29/30页 |
| 文件大小： | 0K |
| 描述： | 36-75VIN 15VOUT 30W NEG LOGIC |
| 产品培训模块： | ULS 30W Series |
| 标准包装： | 128 |
| 系列： | ULS |
| 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： | 15V |
| 电流 - 输出（最大）： | 2A |
| 电源（瓦） - 制造商系列： | 30W |
| 电压 - 隔离： | 2.25kV（2250V） |
| 特点： | 具有远程开/关功能和 UVLO |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP 模块，1/16 砖 |
| 尺寸/尺寸： | 1.30" L x 0.90" W x 0.40" H（33.0mm x 22.9mm x 10.2mm） |
| 包装： | 散装 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 89% |
| 电源（瓦特）- 最大： | 30W |
| 其它名称： | 811-2259 |
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ULS 30-Watt Series
Sixteenth-brick DOSA-Compatible,
Isolated DC/DC Converters
Emissions Performance
Murata Power Solutions measures its products for radio frequency emissions
against the EN 55022 and CISPR 22 standards. Passive resistance loads are
employed and the output is set to the maximum voltage. If you set up your
own emissions testing, make sure the output load is rated at continuous power
while doing the tests.
The recommended external input and output capacitors (if required) are
included. Please refer to the fundamental switching frequency. All of this
information is listed in the Product Speci?cations. An external discrete ?lter is
installed and the circuit diagram is shown below.
[4] Conducted Emissions Test Results
Test Card
C4
Resistive Load
DC Source V+
L2
UUT
Resistive Load
Black
C1
L1
C2
C3
Vin+
Vout+
C6
inside a metal
container
Graph 1. ULS-3.3/8-D48N-C conducted emissions performance, Peak Detection Mode,
V-
Vin-
Vout-
CISPR/EN55022, Class B, full load at 48Vin
C5
Figure 9. Conducted Emissions Test Circuit
[1] Conducted Emissions Parts List
Reference
L1
L2
Part Number
PE-62913
NC
Description
1mH, 6A
4.7uH, 3.6A
Vendor
Pulse
Murata
Ceramic Capacitor
C1, C2
VZ Series
(3.2uf) = 2.2ufd/1ufd in
Panasonic
parallel, 100V
C3
C4, C5
C6
VZ Series
Unknown
VZ Series
Qty 2 - Electrolytic Capacitor
22ufd, 100V
3.3nF, 1500V
Electrolytic Capacitor 33ufd,
100V
Panasonic
Unknown
Panasonic
Graph 2. ULS-12/2.5-D48N-C conducted emissions performance, Peak Detection Mode,
[2] Conducted Emissions Test Equipment Used
CISPR/EN55022, Class B, full load at 48Vin
Rohde & Schwarz EMI Test Receiver (9KHz – 1000MHz) ESPC
Rohde & Schwarz Software ESPC-1 Ver. 2.20
HP11947A Transient Limiter (Agilent)
OHMITE 25W – Resistor combinations
DC Source Programmable DC Power Supply Model 62012P-100-50
[3] Layout Recommendations
Most applications can use the ?ltering which is already installed inside the
converter or with the addition of the recommended external capacitors. For
greater emissions suppression, consider additional ?lter components and/or
shielding. Emissions performance will depend on the user’s PC board layout,
the chassis shielding environment and choice of external components. Please
refer to Application Note GEAN-02 for further discussion.
Since many factors affect both the amplitude and spectra of emissions, we
recommend using an engineer who is experienced at emissions suppression.
Graph 3. ULS-15/2-D48P-C conducted emissions performance, Peak Detection Mode,
CISPR/EN55022, Class B, full load at 48Vin
www.murata-ps.com/support
MDC_ULS-30W_C06 Page 29 of 30
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