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参数资料
| 型号： | SSQE48T25015-PABNG |
| 厂商： | Power-One |
| 文件页数： | 4/13页 |
| 文件大小： | 0K |
| 描述： | DC/DC SIXTEENTH BRICK |
| 标准包装： | 98 |
| 系列： | * |
DATA SHEET
The positive logic version turns on when the ON/OFF pin is at a logic high and turns off when the pin is at a logic low. The
converter is on when the ON/OFF pin is left open. See the Electrical Specifications for logic high/low definitions.
The negative logic version turns on when the pin is at a logic low and turns off when the pin is at a 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.
The ON/OFF pin is internally pulled up to 5 V through a resistor. A properly de-bounced mechanical switch, open-collector
transistor, or FET can be used to drive the input of the ON/OFF pin. The device must be capable of sinking up to 0.2mA at a
low level voltage of ? 0.8V. An external voltage source (± 20V maximum) may be connected directly to the ON/OFF input, in
which case it must be capable of sourcing or sinking up to 1mA depending on the signal polarity. See the Startup Information
section for system timing waveforms associated with use of the ON/OFF pin.
2.3
REMOTE SENSE (PINS 5 AND 7)
The remote sense feature of the converter compensates for voltage drops occurring between the output pins of the converter
and the load. The SENSE(-) (Pin 5) and SENSE(+) (Pin 7) pins should be connected at the load or at the point where
regulation is required (see Fig. B).
Fig. B: Remote sense circuit configuration.
Vin (+)
SSQE48 Converter
(Top View)
Vout (+)
100
Rw
SENSE (+)
Vin
ON/OFF
TRIM
Rload
SENSE (-)
10
Vin (-)
Vout (-)
Rw
CAUTION
If remote sensing is not utilized, the SENSE(-) pin must be connected to the Vout(-) pin (Pin 4), and the SENSE(+) pin
must be connected to the Vout(+) pin (Pin 8) to ensure the converter will regulate at the specified output voltage. If these
connections are not made, the converter will deliver an output voltage that is higher than the specified data sheet value.
Because the sense leads carry minimal current, large traces on the end-user board are not required. However, sense traces
should be run side by side and located close to a ground plane to minimize system noise and ensure optimum performance.
The converter’s output overvoltage protection (OVP) senses the voltage across Vout(+) and Vout( -), and not across the
sense lines, so the resistance (and resulting voltage drop) between the output pins of the converter and the load should be
minimized to prevent unwanted triggering of the OVP.
When utilizing the remote sense feature, care must be taken not to exceed the maximum allowable output power capability of
the converter, which is equal to the product of the nominal output voltage and the allowable output current for the given
conditions.
When using remote sense, the output voltage at the converter 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 converter’s act ual
output power remains at or below the maximum allowable output power.
2.4
OUTPUT VOLTAGE ADJUST /TRIM (PIN 6)
The output voltage can be adjusted up 10% or down 20%. The TRIM pin should be left open if trimming is not being used. To
minimize noise pickup, a 0.1 μ 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:
R T ? INCR ?
5.11(100 ? Δ)V O ? NOM ? 626
1.225 Δ
? 10.22 , [k ? ],
SSQE48T25015 DC-DC Converter
4
www.power-one.com
相关PDF资料 |
PDF描述 |
|---|---|
| SSQE48T25018-PABNG | DC/DC SIXTEENTH BRICK |
| SSQE48T25025-PABNG | DC/DC SIXTEENTH BRICK |
| SSQL48T20033-NAABG | CONV DC-DC 3.3V 20A 1/16 BRICK |
| ST5ER504 | TRIMMER 500K OHM 0.25W SMD |
| ST7ETB503 | TRIMMER 50K OHM 0.25W SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SSQE48T25018-NAANG | 制造商:Power-One 功能描述:Module DC-DC 1-OUT 1.8V 25A 8-Pin 1/16-Brick |
| SSQE48T25018-NAB0G | 制造商:Power-One 功能描述:DCDC - Bulk |
| SSQE48T25018-NABNG | 功能描述:DC/DC转换器 RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| SSQE48T25018-PAA0 | 制造商:Power-One 功能描述:- Bulk |
| SSQE48T25018-PAAN | 制造商:Power-One 功能描述:Module DC-DC 1-OUT 1.8V 25A 8-Pin 1/16-Brick |
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