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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)： | 32/37頁 |
| 文件大小： | 611K |
| 代理商： | QM48S40033-NS00 |
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NOV 13, 2006 revised to MAR 28, 2007
Page 4 of 37
www.power-one.com
QM48S DC-DC Converter Series Data Sheet
40A Output
When using remote sense, the output voltage at the con-
verter can be increased by as much as 10% above the
nominal rating in order to maintain the required voltage
across the load. Therefore, the designer must, if necessary,
decrease the maximum current (originally obtained from the
derating curves) by the same percentage to ensure the con-
verter’s actual output power remains at or below the maxi-
mum allowable output power.
Output Voltage Adjust /TRIM (Pin 6)
The output voltage can be adjusted up 10% or down 20% for
Vout ≥ 1.5 V, and ±10% for Vout = 1.2 V and 1.0 V relative
to the rated output voltage by the addition of an externally
connected resistor. For 3.3 V output voltage, trim up to 10%
is guaranteed only at Vin ≥ 40 V, and it is marginal (8% to
10%) at Vin = 36 V.
The TRIM pin should be left open if trimming is not being
used. To minimize noise pickup, a 0.1 F capacitor is con-
nected internally between the TRIM and SENSE(-) pins.
To increase the output voltage, refer to Fig. C. A trim resis-
tor, RT-INCR, should be connected between the TRIM (Pin 6)
and SENSE(+) (Pin 7), with a value of:
10.22
1.225Δ
626
Δ)V
5.11(100
R
NOM
O
INCR
T
+
=
[k
Ω] (3.3 -1.5V)
7.2
Δ
84.6
R INCR
T
=
[k
Ω] (1.2 V)
9
Δ
120
R INCR
T
=
[k
Ω] (1.0 V)
where,
=
INCR
T
R
Required value of trim-up resistor k
Ω]
=
NOM
O
V
Nominal value of output voltage [V]
100
X
V
)
V
(V
Δ
NOM
-
O
NOM
-
O
REQ
-
O
=
[%]
=
REQ
O
V
Desired (trimmed) output voltage [V].
When trimming up, care must be taken not to exceed the
converter‘s maximum allowable output power. See previous
section for a complete discussion of this requirement.
Rload
Vin
Vin (+)
Vin (-)
ON/OFF
Vout (+)
Vout (-)
TRIM
SENSE (+)
SENSE (-)
R T-INCR
(Top View)
Converter
Series
QmaXTM
Fig. C: Configuration for increasing output voltage.
To decrease the output voltage (Fig. D), a trim resistor,
RT-DECR, should be connected between the TRIM (Pin 6) and
SENSE(-) (Pin 5), with a value of:
10.22
|
Δ
|
511
R DECR
T
=
[k
Ω] (3.3 - 1.5 V)
15
|
Δ
|
700
R DECR
T
=
[k
Ω] (1.2 V)
17
|
Δ
|
700
R DECR
T
=
[k
Ω] (1.0 V)
where,
=
DECR
T
R
Required value of trim-down resistor [k
Ω]
and Δ is as defined above.
Note: The above equations for calculation of trim resistor
values match those typically used in conventional industry-
standard quarter bricks (except for 1.2 V and 1.0 V outputs).
Converters with output voltages 1.2 V and 1.0 V are avail-
able with alternative trim feature to provide the customers
with the flexibility of second sourcing.
For 1.2 V and 1.0 V only, “T” version converter with the last
character in the part number “T” uses the following trim
equations:
Δ
485
R INCR
T
=
[k
Ω] (1.2V)
2
Δ
323
R INCR
T
=
[k
Ω] (1.0V)
10.22
|
Δ
|
511
R DECR
T
=
[k
Ω] (For 1.2V and 1.0V)
For 1.2V only, “U” version converter with the last character in
the part number “U” uses the following trim equations:
Δ
100
R INCR
T
=
[k
Ω]
2
|
Δ
|
100
R DECR
T
=
[k
Ω]
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 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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