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| 型号： | HPQ-3.3/50-D48NB-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 9/11页 |
| 文件大小： | 0K |
| 描述： | CONV DC/DC 165W 3.3V 50A |
| 标准包装： | 30 |
| 系列： | HPQ-3.3/50-D48 |
| 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）： | 50A |
| 电源（瓦） - 制造商系列： | 165W |
| 电压 - 隔离： | 2.25kV（2250V） |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP 模块，1/4 砖 |
| 尺寸/尺寸： | 2.30" L x 1.45" W x 0.50" H（58.4mm x 36.8mm x 12.7mm） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 90% |
| 电源（瓦特）- 最大： | 165W |
| 产品目录页面： | 2719 (CN2011-ZH PDF) |
| 其它名称： | 811-1756-5 |
HPQ-3.3/50-D48 Series
Isolated High Power Quarter Brick DC-DC Converters
TECHNICAL NOTES
Removal of Soldered Converters from Printed Circuit Boards
Should removal of the converter 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 converters that have not
been properly de-soldered ?rst.
Input Source Impedance
These 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 this Series are tested/speci?ed for input ripple current (also called
input re?ected ripple current) and output noise using the circuits and layout
shown in Figures 2 and 3. External input capacitors (C IN in Figure 2) serve
primarily as energy-storage elements.
They 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, C BUS and
L BUS simulate a typical dc voltage bus. Your speci?c system con?guration may
necessitate additional considerations.
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 temperature
rise from re?ected AC current dissipated inside capacitor ESR.All external
capacitors should have appropriate voltage ratings and be located as close to
the converter as possible. Temperature variations for all relevant parameters
should be taken into consideration.
The most effective combination of external I/O capacitors will be a function
of line voltage and source impedance, as well as particular load and layout
conditions.
TO
Start-Up Threshold and Undervoltage Shutdown
Under normal start-up conditions, these converters will not begin to regulate
properly until the ramping input voltage exceeds the Start-Up Threshold. Once
operating, devices will turn off when the applied voltage drops below the Und-
ervoltage Shutdown point. Devices will remain off as long as the undervoltage
condition continues. Units will automatically re-start when the applied voltage
is brought back above the Start-Up Threshold. The hysteresis built into this
function avoids an indeterminate on/off condition at a single input voltage. See
Performance/Functional Speci?cations table for actual limits.
Start-Up Time
The V IN to V OUT Start-Up Time is the interval between the point at which a
ramping input voltage crosses the Start-Up Threshold voltage and the point at
which the fully loaded output voltage enters and remains within its speci?ed
regulation band. Actual measured times will vary with input source imped-
ance, external input capacitance, and the slew rate and ?nal value of the input
voltage as it appears to the converter. The On/Off to V OUT start-up time assumes
that the converter is turned off via the Remote On/Off Control with the nominal
input voltage already applied.
On/Off Control
The primary-side, Remote On/Off Control function can be speci?ed to operate
with either positive or negative polarity. Positive-polarity devices ("P" suf?x)
are enabled when the on/off pin is left open or is pulled high. Positive-polarity
devices are disabled when the on/off pin is pulled low (with respect to –Input).
Negative-polarity devices are off when the on/off pin is high and on when the
on/off pin is pulled low. See Figure 4.
Dynamic control of the remote on/off function is best accomplished with a me-
chanical relay or an open-collector/open-drain drive circuit (optically isolated if
appropriate). The drive circuit should be able to sink appropriate current (see
Performance Speci?cations) when activated and withstand appropriate voltage
when deactivated.
OSCILLOSCOPE
CURRENT
PROBE
1
+VIN
+SENSE
+VOUT
7
8
+
L BUS
V IN
C BUS
C IN
C1
C2
SCOPE
R LOAD
–
3
–VIN
–VOUT
4
5
See specs for component values.
Figure 2. Measuring Input Ripple Current
–SENSE
C1 = 1μF
C2 = 10μF TANTALUM
LOAD 2-3 INCHES (51-76mm) FROM MODULE
Figure 3. Measuring Output Ripple/Noise (PARD)
www.murata-ps.com/support
MDC_HPQ-3.3/50-D48 Series.B01 Page 9 of 11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| HPQ50-D48 | 制造商:MURATA 制造商全称:Murata Manufacturing Co., Ltd. 功能描述:Isolated High Power Quarter Brick DC/DC Converters |
| HPQ-50-D48NB-C | 制造商:MURATA 制造商全称:Murata Manufacturing Co., Ltd. 功能描述:Isolated High Power Quarter Brick DC/DC Converters |
| HPQ-50-D48NBH-C | 制造商:MURATA 制造商全称:Murata Manufacturing Co., Ltd. 功能描述:Isolated High Power Quarter Brick DC/DC Converters |
| HPQ-50-D48NBH-Y | 制造商:MURATA 制造商全称:Murata Manufacturing Co., Ltd. 功能描述:Isolated High Power Quarter Brick DC/DC Converters |
| HPQ-50-D48NB-Y | 制造商:MURATA 制造商全称:Murata Manufacturing Co., Ltd. 功能描述:Isolated High Power Quarter Brick DC/DC Converters |
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