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参数资料
| 型号： | UVQ-18/5.6-D24NB-C |
| 厂商： | MURATA POWER SOLUTIONS INC |
| 元件分类： | 电源模块 |
| 英文描述： | DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT PACKAGE-8 |
| 文件页数： | 2/25页 |
| 文件大小： | 3470K |
| 代理商： | UVQ-18/5.6-D24NB-C |
Removal of Soldered UVQ's from Printed Circuit Boards
Should removal of the UVQ from its soldered connection be needed, thoroughly
de-solder the pins using solder wicks or de-soldering tools. At no time should
any prying or leverage be used to remove boards that have not been properly
de-soldered first.
Input Source Impedance
UVQ 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.
I/O Filtering, Input Ripple Current, and Output Noise
All models in the UVQ Series are tested/specified for input ripple current (also
called input reflected ripple current) and output noise using the circuits and
layout shown in Figures 2 and 3.
Figure 2. Measuring Input Ripple Current
CIN
VIN
CBUS
LBUS
CIN = 33F, ESR < 700m
@ 100kHz
CBUS = 220F, ESR < 100m
@ 100kHz
LBUS = 12H
3
1
+INPUT
–INPUT
CURRENT
PROBE
TO
OSCILLOSCOPE
+
–
External input capacitors (CIN in Figure 2) serve primarily as energy-storage
elements. They should be selected for bulk capacitance (at appropriate fre-
quencies), 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 configura-
tion may necessitate additional considerations.
Input Voltage
24V models
48V models
Continuous
0 to +36V
0 to +75V
Transient (100 mS)
+50V +100V
On/Off Control
–0.3 V min to +13.5V max.
Input Reverse Polarity Protection
See Fuse section
Output Overvoltage
Vout +20% max.
Output Current (Note 7)
Current-limited. Devices can withstand
sustained short circuit without damage.
Storage Temperature
–55 to +125°C
Lead Temperature (soldering 10 sec.) +280°C
Absolute maximums are stress ratings. Exposure of devices to any of these
conditions may adversely affect long-term reliability. Proper operation under
conditions other than those listed in the Performance/Functional Specifica-
tions Table is not implied nor recommended.
(1) All models are tested and specified with 200 LFM airflow, external 1||10F ceramic/
tantalum output capacitors. External input capacitance varies according to model type.
All capacitors are low ESR types. These capacitors are necessary to accommodate
our test equipment and may not be required to achieve specified performance in your
applications. All models are stable and regulate within spec under no-load conditions.
General conditions for Specifications are +25°C, Vin =nominal, Vout = nominal, full load.
(2) Input Ripple Current is tested and specified over a 5-20MHz bandwidth. Input filter-
ing is Cin = 33F tantalum, Cbus = 220F electrolytic, Lbus = 12H.
(3) Note that Maximum Power Derating curves indicate an average current at nominal
input voltage. At higher temperatures and/or lower airflow, the DC/DC converter will
tolerate brief full current outputs if the total RMS current over time does not exceed
the Derating curve.
(4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1,
Case 3, ground fixed conditions, TPCBOARD = +25°C, full output load, natural air
convection.
(5) The On/Off Control may be driven with external logic or by applying appropriate
external voltages which are referenced to Input Common. The On/Off Control Input
should use either an open collector/open drain transistor or logic gate which does
not exceed +13.5V.
(6) Short circuit shutdown begins when the output voltage degrades approximately 2%
from the selected setting.
(7) The outputs are not intended to sink appreciable reverse current. Sinking excessive
reverse current may damage the outputs.
(8) Output noise may be further reduced by adding an external filter. See I/O Filtering
and Noise Reduction.
(9) All models are fully operational and meet published specifications, including “cold
start” at –40°C.
(10) Regulation specifications describe the deviation as the line input voltage or output
load current is varied from a nominal midpoint value to either extreme.
(11) Overvoltage shutdown on 48V input models is not supplied in order to comply with
telecom reliability requirements. These requirements attempt continued operation
despite significant input overvoltage.
(12) Do not exceed maximum power specifications when adjusting the output trim.
(13) Note that the converter may operate up to +110°C with the baseplate installed.
However, thermal self-protection occurs near +110°C, and there is a temperature
gradient between the hotspot and the baseplate. Therefore, +100°C is recom-
mended to avoid thermal shutdown.
(14) The converter is guaranteed to turn off at the UV shutdown voltage.
(15) At full power, the package temperature of all on-board components must not exceed
+128°C.
PART NUMBER STRUCTURE
MECHANICAL SPECIFICATIONS
MDC_UVQ Models.B04 Page 10 of 25
UVQ Series
Low Profile, Isolated Quarter Brick
2.5–40 Amp DC/DC Converters
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
www.murata-ps.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| UVQ-2.5/35-D24N | 制造商:Murata Power Solutions 功能描述:Module DC-DC 1-OUT 2.5V 35A 87.5W 8-Pin Quarter-Brick |
| UVQ-2.5/35-D24NB-C | 功能描述:DC/DC转换器 87.5W 24V - 2.5V 35A NEG POL BASEPLATE 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: |
| UVQ-2.5/35-D24N-C | 功能描述:DC/DC转换器 87.5W 24V - 2.5V 35A NEGATIVE 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: |
| UVQ-2.5/35-D24P | 制造商:Murata Power Solutions 功能描述:Module DC-DC 1-OUT 2.5V 35A 87.5W 8-Pin Quarter-Brick |
| UVQ-2.5/35-D24PB-C | 功能描述:DC/DC转换器 87.5W 24V - 2.5V 35A POS POL BASEPLATE 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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