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參數(shù)資料
| 型號： | QM48S40033-NS00 |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 132 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, QUARTER BRICK, 8 PIN |
| 文件頁數(shù)： | 33/37頁 |
| 文件大?。?/td> | 611K |
| 代理商： | QM48S40033-NS00 |
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NOV 13, 2006 revised to MAR 28, 2007
Page 5 of 37
www.power-one.com
QM48S DC-DC Converter Series Data Sheet
40A Output
Rload
Vin
Vin (+)
Vin (-)
ON/OFF
Vout (+)
Vout (-)
TRIM
SENSE (+)
SENSE (-)
RT-DECR
(Top View)
Converter
Series
QmaXTM
QmaX
QmaXTM
Fig. D: Configuration for decreasing output voltage.
Trimming/sensing beyond 110% of the rated output voltage
is not an acceptable design practice, as this condition could
cause unwanted triggering of the output over-voltage protec-
tion (OVP) circuit. The designer should ensure that the dif-
ference between the voltages across the converter’s output
pins and its sense pins does not exceed 10% of VOUT(NOM),
or:
X
NOM
-
O
SENSE
OUT
10%
V
)]
(
V
)
(
[V
)]
(
V
)
(
[V
≤
+
+
[V]
This equation is applicable for any condition of output sens-
ing and/or output trim.
Protection Features
Input Undervoltage Lockout
Input undervoltage lockout is standard with this converter.
The converter will shut down when the input voltage drops
below a pre-determined voltage.
The input voltage must be typically 34 V for the converter to
turn on. Once the converter has been turned on, it will shut
off when the input voltage drops typically below 32 V. This
feature is beneficial in preventing deep discharging of batter-
ies used in telecom applications.
Output Overcurrent Protection (OCP)
The converter is protected against overcurrent or short cir-
cuit conditions. Upon sensing an over-current condition, the
converter will switch to constant current operation and
thereby begin to reduce output voltage. When the output
voltage drops below 50% of the nominal value of output volt-
age, the converter will shut down.
Once the converter has shut down, it will attempt to restart
nominally every 100 ms with a typical 1-2% duty cycle. The
attempted restart will continue indefinitely until the overload
or short circuit conditions are removed or the output voltage
rises above 50% of its nominal value.
Output Overvoltage Protection (OVP)
The converter will shut down if the output voltage across
Vout(+) (Pin 8) and Vout(-) (Pin 4) exceeds the threshold of
the OVP circuitry. The OVP circuitry contains its own refer-
ence, independent of the output voltage regulation loop.
Once the converter has shut down, it will attempt to restart
every 100 ms until the OVP condition is removed.
Overtemperature Protection (OTP)
The converter will shut down under an over-temperature
condition to protect itself from overheating caused by opera-
tion outside the thermal derating curves, or operation in ab-
normal conditions such as system fan failure. After the con-
verter has cooled to a safe operating temperature, it will
automatically restart.
Safety Requirements
The converters meet North American and International
safety regulatory requirements per UL60950 and EN60950.
Basic Insulation is provided between input and output.
To comply with safety agencies requirements, an input line
fuse must be used external to the converter. The Table be-
low provides the recommended fuse rating for use with this
family of products.
Output Voltage
Fuse Rating
3.3 V
7.5-A
2.5 -1.8 V
5-A
1.5 - 1.0 V
3-A
Modules are UL approved for maximum fuse rating of 15-A.
To protect a group of modules with a single fuse, the rating
can be increased from the recommended values above.
Electromagnetic Compatibility (EMC)
EMC requirements must be met at the end-product system
level, as no specific standards dedicated to EMC character-
istics of board mounted component dc-dc converters exist.
However, Power-One tests its converters to several system
level standards, primary of which is the more stringent
EN55022, Information technology equipment - Radio distur-
bance characteristics - Limits and methods of measurement.
Effective internal LC differential filter significantly reduces
input reflected ripple current, and improves EMC.
With the addition of a simple external filter, all versions of the
QmaX Series of converters pass the requirements of
Class B conducted emissions per EN55022 and FCC, and
meet at a minimum, Class A radiated emissions per EN
55022 and Class B per FCC Title 47CFR, Part 15-J. Please
contact Power-One Applications Engineering for details of
this testing.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| QM48S40033-NS00A | 制造商:Power-One 功能描述: |
| QM48S40033-NS00G | 功能描述:DC/DC轉(zhuǎn)換器 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: |
| QM48S40033-NS0P | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 3.3V 40A 132W 8PIN QUARTER-BRICK - Bulk |
| QM48S40033-NS0PG | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 3.3V 40A 132W 8PIN QUARTER-BRICK - Bulk |
| QM48S40033-PS00 | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 3.3V 40A 132W - Bulk |
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