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參數(shù)資料
| 型號： | BEI15-150-Q48N-C |
| 廠商： | MURATA POWER SOLUTIONS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 15 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, PACKAGE-6 |
| 文件頁數(shù)： | 11/13頁 |
| 文件大?。?/td> | 250K |
| 代理商： | BEI15-150-Q48N-C |
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
www.murata-ps.com
email: sales@murata-ps.com
18 Feb 2011
MDC_BEI15W.A04 Page 7 of 13
perature, an on-board electronic temperature sensor will power down the unit.
When the temperature decreases below the turn-on threshold, the converter
will automatically restart. There is a small amount of temperature hysteresis to
prevent rapid on/off cycling.
CAUTION: If you operate too close to the thermal limits, the converter may
shut down suddenly without warning. Be sure to thoroughly test your applica-
tion to avoid unplanned thermal shutdown.
Temperature Derating Curves
The graphs in the next section illustrate typical operation under a variety of
conditions. The Derating curves show the maximum continuous ambient air
temperature and decreasing maximum output current which is acceptable
under increasing forced airow measured in Linear Feet per Minute (“LFM”).
Note that these are AVERAGE measurements. The converter will accept brief
increases in current or reduced airow as long as the average is not exceeded.
Note that the temperatures are of the ambient airow, not the converter
itself which is obviously running at higher temperature than the outside air.
Also note that very low ow rates (below about 25 LFM) are similar to “natural
convection”, that is, not using fan-forced airow.
Murata Power Solutions makes Characterization measurements in a closed
cycle wind tunnel with calibrated airow. We use both thermocouples and an
infrared camera system to observe thermal performance.
CAUTION: If you exceed these Derating guidelines, the converter may have
an unplanned Over Temperature shut down. Also, these graphs are all collected
near Sea Level altitude. Be sure to reduce the derating for higher altitude.
Output Current Limiting
Current limiting inception is dened as the point at which full power falls
below the rated tolerance. See the Performance/Functional Specications.
Note particularly that the output current may briey rise above its rated value
in normal operation as long as the average output power is not exceeded. This
enhances reliability and continued operation of your application. If the output
current is too high, the converter will enter the short circuit condition.
Output Short Circuit Condition
When a converter is in current-limit mode, the output voltage will drop as the
output current demand increases. If the output voltage drops too low (approxi-
mately 98% of nominal output voltage for most models), the PWM controller
will shut down. Following a time-out period, the PWM will restart, causing
the output voltage to begin rising to its appropriate value. If the short-circuit
condition persists, another shutdown cycle will initiate. This rapid on/off cycling
is called “hiccup mode”. The hiccup cycling reduces the average output cur-
rent, thereby preventing excessive internal temperatures and/or component
damage.
Remote On/Off Control
The remote On/Off Control can be specied with either logic polarity. Please
refer to the Connection Diagram on page 1 for On/Off connections.
Positive polarity models are enabled when the On/Off pin is left open or is
pulled high to +Vin with respect to –Vin. Therefore, the On/Off control can be
disconnected if the converter should always be on. Positive-polarity devices are
disabled when the On/Off is grounded or brought to within a low voltage (see
Specications) with respect to –Vin.
Negative polarity devices are on (enabled) when the On/Off pin is grounded
or brought to within a low voltage (see Specications) with respect to –Vin. The
device is off (disabled) when the On/Off is pulled high (see Specications) with
respect to –Vin.
Dynamic control of the On/Off function must sink the specied signal current
when brought low and withstand the specied voltage when brought high.
Be aware too that there is a nite time in milliseconds (see Specications)
between the time of On/Off Control activation and stable, regulated output. This
time will vary slightly with output load type and current and input conditions.
Output Capacitive Load
These converters do not require external capacitance added to achieve rated
specications. Users should only consider adding capacitance to reduce
switching noise and/or to handle spike current load steps. Install only enough
capacitance to achieve your noise and surge response objectives. Excess
external capacitance may cause regulation problems and possible oscillation
or instability.
The maximum rated output capacitance and ESR specication is given for a
capacitor installed immediately adjacent to the converter.
C1
C1 = 0.1μF CERAMIC
C2 = 10μF TANTALUM
LOAD 2-3 INCHES (51-76mm) FROM MODULE
C2
RLOAD
COPPER STRIP
SCOPE
+OUTPUT
+SENSE
-OUTPUT
Figure 3: Measuring Output Ripple and Noise (PARD)
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| BEI15-150-Q48P-C | 功能描述:DC/DC轉(zhuǎn)換器 15W 48Vin Pos Logic +/-15Vout +/-500mA RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| BEJ110001000 | 制造商:JSP 功能描述:FACE MASK MOULDED FFP1 BX20 制造商:JSP 功能描述:FACE MASK, MOULDED, FFP1, BX20 |
| BEJ110-001-000 | 制造商:JSP 功能描述:MASK MOULDED FFP1 PK20 |
| BEJ120-001-000 | 制造商:ROEBUCK 功能描述:RBK FFP2 MOULDED MASK PK20 |
| BEK120-001-000 | 制造商:JSP 功能描述:MASK VALVED MOULDED FFP2 PK10 制造商:JSP 功能描述:MASK, VALVED, MOULDED, FFP2, PK10 制造商:JSP 功能描述:MASK, VALVED, MOULDED, FFP2, PK10; Protection Class:p2; Respirator Type:Valved; Class:FFP2; Face Mask Style:Disposable ;RoHS Compliant: NA |
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