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SSQE48T25025 DC-DC Converter
36-75 VDC Input; 2.5 VDC, 25 A Output
Data Sheet
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
R T ? DECR ?
511
| Δ |
? 10.22 , [k ? ]
maximum allowable output power.
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 μF
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
where,
R T-DECR = Required value of trim-down resistor [k ? ]
and Δ is defined above.
Note:
The above equations for calculation of trim resistor values match
those typically used in conventional industry-standard quarter-
bricks, eighth-bricks and sixteenth-bricks.
TRIM (Pin 6) and SENSE(+) (Pin 7), with a value of:
Vin (+)
SSQE48 Converter
Vout (+)
(Top View)
SENSE (+)
R T ? INCR
?
5.11(100 ? Δ)V O ? NOM ? 626
1.225 Δ
? 10.22 , [k ? ],
Vin
ON/OFF
Vin (-)
TRIM
SENSE (-)
Vout (-)
R T-DECR
Rload
where,
R T ? INCR ? Required value of trim-up resistor [k ? ]
V O ? NOM ? Nominal value of output voltage [V]
Fig. D: Configuration for decreasing output voltage.
Trimming/sensing beyond 110% of the rated output
voltage is not an acceptable design practice, as this
Δ ?
(V O -REQ ? V O -NOM )
V O - NOM
X 100 , [%]
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
V O ? REQ ? 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.
its sense pins does not exceed 10% of V OUT (nom),
or:
[V OUT ( ? ) ? V OUT ( ? )] ? [V SENSE ( ? ) ? V SENSE ( ? )] ? V O - NOM X 10% [V]
This equation is applicable for any condition of
output sensing and/or output trim.
Vin (+)
SSQE48 Converter
(Top View)
Vout (+)
SENSE (+)
R T-INCR
Vin
ON/OFF
TRIM
Rload
SENSE (-)
Vin (-)
Vout (-)
Fig. C: Configuration for increasing output voltage.
To decrease the output voltage (Fig. D), a trim
resistor, R T-DECR , should be connected between the
TRIM (Pin 6) and SENSE(-) (Pin 5), with a value of:
ZD-02089 Rev. 1.1
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相关代理商/技术参数
SSQE48T25033-NAAN
制造商:Power-One 功能描述:SSQE series 3.3 V 25 A Single Output DC/DC Converter
SSQE48T25033-NAANG
功能描述:DC/DC转换器 3.3v 25A NEG TH .188" PL /16TH BRICK 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:
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功能描述:DC/DC转换器 3.3V 25A NEG TH .145" PL /16TH BRICK 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:
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功能描述:DC/DC转换器 3.3V 25A POS TH .188" PL /16TH BRICK 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:
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功能描述:DC/DC转换器 3.3V 25A POS TH .145" PL /16TH BRICK 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:
SSQE48T7120-NABNG
制造商:Power-One 功能描述:
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功能描述:DC/DC转换器 3.3V at 20A 1/16th brick 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:
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