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| 型號(hào)： | QME48T40018-NGA0G |
| 廠商： | POWER-ONE INC |
| 元件分類(lèi)： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT |
| 文件頁(yè)數(shù)： | 32/35頁(yè) |
| 文件大?。?/td> | 1435K |
| 代理商： | QME48T40018-NGA0G |
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QME48T40 DC-DC Series Data Sheet
36-75 VDC Input; 1.0-3.3 VDC @ 40A Output
actual output power remains at or below the
maximum 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.
The TRIM pin should be left open if trimming is not
being used. To minimize noise pickup, a 0.1 F
capacitor is connected internally between the TRIM
and SENSE(-) pins.
To increase the output voltage, refer to Fig. C. A trim
resistor, RT-INCR, should be connected between the
TRIM (Pin 6) and SENSE(+) (Pin 7), with a value of:
10.22
1.225
626
)V
5.11(100
R
NOM
O
INCR
T
+
=
[k],
for 3.3 – 1.5 V.
7.2
84.6
R INCR
T
=
[k]
(1.2 V)
9
120
R INCR
T
=
[k]
(1.0 V)
where,
=
INCR
T
R
Required value of trim-up resistor k]
=
NOM
O
V
Nominal value of output voltage [V]
100
X
V
)
V
(V
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 the 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
QME Series
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
|
|
511
R DECR
T
=
[k]
(3.3 – 1.5 V)
15
|
|
700
R DECR
T
=
[k]
(1.2 V)
17
|
|
700
R DECR
T
=
[k]
(1.0 V)
where,
=
DECR
T
R
Required value of trim-down resistor [k]
and is 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).
Rload
Vin
Vin (+)
Vin (-)
ON/OFF
Vout (+)
Vout (-)
TRIM
SENSE (+)
SENSE (-)
RT-DECR
(Top View)
Converter
QME Series
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 overvoltage protection (OVP) circuit. The
designer should ensure that the difference 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
sensing and/or output trim.
ZD-02057 Rev. 4.1
www.power-one.com
Page 6 of 35
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| QME48T40018-NGB0 | 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(chēng)）: 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: |
| QME48T40018-NGB0G | 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(chēng)）: 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: |
| QME48T40018-NGBOG | 制造商:POWER-ONE INC 功能描述:PwrSup;DC-DC Converter;Out 1.8VDC;In 36 to 75VDC;Thru-Hole;Open-Frame;Switching |
| QME48T40018-PGB0 | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 1.8V 40A 8PIN QUARTER-BRICK - Bulk |
| QME48T40018-PGB0G | 功能描述:DC/DC轉(zhuǎn)換器 36-75Vin 40A 18V out Positive, Thru Hole 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(chēng)）: 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: |
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