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| 型号： | QD48T025033-NBB0 |
| 厂商： | Power-One |
| 文件页数： | 5/15页 |
| 文件大小： | 0K |
| 描述： | CONV DC-DC 48V IN 3.3/2.5V DUAL |
| 标准包装： | 100 |
| 系列： | QD48 |
| 类型： | 隔离 |
| 输出数： | 2 |
| 电压 - 输入（最小）： | 36V |
| 电压 - 输入（最大）： | 75V |
| Voltage - Output 1： | 2.5V |
| Voltage - Output 2： | 3.3V |
| 电流 - 输出（最大）： | 15A，15A |
| 电源（瓦） - 制造商系列： | 49W |
| 电压 - 隔离： | 2kV（2000V） |
| 安装类型： | 通孔 |
| 封装/外壳： | 7-DIP 模块，1/4 砖 |
| 尺寸/尺寸： | 2.30" L x 1.45" W x 0.34" H（58.4mm x 36.8mm x 8.6mm） |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 88% |
| 电源（瓦特）- 最大： | 49.5W |
| 其它名称： | 179-2235 QD48T025033-NAA0 QD48T025033-NBBO |
QD48T025033 DC-DC Converter Data Sheet
36-75 VDC Input; 2.5 and 3.3VDC @ 15A Outputs
Operation
Input and Output Impedance
These power converters have been designed to be stable
with no external capacitors when used in low inductance
input and output circuits.
However, in many applications, the inductance associated
with the distribution from the power source to the input of the
converter can affect the stability of the converter. The
addition of a 33 μF electrolytic capacitor with an ESR < 1 Ω
across the input helps ensure stability of the converter. In
many applications, the user has to use decoupling
capacitance at the load. The converter will exhibit stable
operation with external load capacitance up to 10,000 μF on
both outputs.
depending on the signal polarity. See the Start-up
Information section for system timing waveforms associated
with use of the ON/OFF pin.
Output Voltage Adjust /TRIM (Pin 6)
The converter’s output voltages can be adjusted
simultaneously up 10% or down 10% relative to the rated
output voltages by the addition of an externally connected
resistor. For output voltage 3.3 V, 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 μF capacitor is
connected internally between the TRIM and RETURN pins.
Q Family
ON/OFF (Pin 2)
Vin (+)
TM
Converter
Vout2 (+)
The ON/OFF pin is used to turn the power converter on or
off remotely via a system signal. There are two remote
control options available, positive logic and negative logic
and both are referenced to Vin(-). Typical connections are
shown in Fig. 2.
Vin
ON/OFF
Vin (-)
(Top View)
TRIM
RTN
Vout1 (+)
R T-INCR
Rload2
Rload1
Q Family
Vin
Vin (+)
ON/OFF
TM
Converter
(Top View)
Vout2 (+)
TRIM
RTN
Rload2
Fig. 3: Configuration for increasing output voltage .
To increase the output voltage (refer to Fig. 3), a trim
resistor, R T-INCR , should be connected between the TRIM
(Pin 6) and RETURN (Pin 5), with a value from the table
Rload1
below.
CONTROL
INPUT
Vin (-)
Vout1 (+)
Q Family
Fig. 2: Circuit configuration for ON/OFF function.
Vin (+)
TM
Converter
Vout2 (+)
(Top View)
TRIM
R T-DECR
Rload2
The positive logic version turns on when the ON/OFF pin is
at logic high and turns off when at logic low. The converter is
on when the ON/OFF pin is left open .
Vin
ON/OFF
Vin (-)
RTN
Vout1 (+)
Rload1
The negative logic version turns on when the pin is at logic
low and turns off when the pin is at logic high. The ON/OFF
pin can be hard wired directly to Vin(-) to enable automatic
power up of the converter without the need of an external
control signal.
ON/OFF pin is internally pulled-up to 5 V through a resistor.
A mechanical switch, open collector transistor, or FET can
Fig. 4: Configuration for decreasing output voltage .
To decrease the output voltage, a trim resistor R T-DECR , (Fig.
4) should be connected between the TRIM (Pin 6) and
Vout1(+) pin (Pin 4), with a value from the table below,
where:
be used to drive the input of the ON/OFF pin. The device
must be capable of sinking up to 0.2 mA at a low level
voltage of ≤ 0.8 V. An external voltage source of ± 20 V max.
may be connected directly to the ON/OFF input, in which
case it should be capable of sourcing or sinking up to 1 mA
Δ = percentage of increase or decrease Vout(NOM).
Note 1: Both outputs are trimmed up or
simultaneously.
down
MCD10084 Rev. 1.0, 25-Sep-08
Page 5 of 15
www.power-one.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| QD48T025033-NBB0G | 制造商:Power-One 功能描述:DC/DC CONVERTER 2.5V 3.3V 87W |
| QD48T025033-NCA0G | 制造商:Power-One 功能描述:DC/DC, 1/4BRICK, 48V IN, DUAL 2.5V & 3.3V OUT, THROUGH HOLE - Bulk |
| QD48T025033-NCB0 | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 2.5V/3.3V 15A - Bulk |
| QD48T025033-NCB0G | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 2.5V/3.3V 15A - Bulk |
| QD48T025033-NCC0 | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 2.5V/3.3V 15A - Bulk |
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