参数资料
| 型号： | RFS06ZE-M6 |
| 厂商： | Power-One |
| 文件页数： | 14/18页 |
| 文件大小： | 0K |
| 描述： | CONV DC-DC 48V IN 3.3V OUT 19.8W |
| 标准包装： | 15 |
| 系列： | RFS |
| 类型： | 隔离 |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 36V |
| 电压 - 输入（最大）： | 75V |
| Voltage - Output 1： | 3.3V |
| 电流 - 输出（最大）： | 6A |
| 电源（瓦） - 制造商系列： | 20W |
| 电压 - 隔离： | 1.5kV（1500V） |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 18-DIP SMD 模块 |
| 尺寸/尺寸： | 1.87" L x 1.00" W x 0.37" H（47.5mm x 25.4mm x 9.4mm） |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 100°C |
| 效率： | 85% |
| 电源（瓦特）- 最大： | 19.8W |
| 其它名称： | 179-2203 |
RFS/RDS Series Data Sheet
?
20W SMT DC-DC Converters, 1.5 – 5 V Output
Output Current Limitation
When the output is overloaded above the maximum
output current rating, the voltage will start to reduce to
maintain the output power to a safe level. In a
condition of high overload or short-circuit where the
output voltage is pulled below approximately 30% of
V o nom , the converter will enter a ‘hiccup’ mode of
operation. Under this condition the converter will
attempt to restart, approximately every 25 ms, until the
overload has cleared.
Parallel Operation
Paralleling of two converters is not possible.
Output Voltage Adjust
This feature allows the user to adjust the output
voltage V o .
Output voltage can be adjusted using an external
resistor. To increase V o , a resistor R ext should be
connected between pins 2 and 3. To decrease V o , the
resistor should be connected between pins 1 and 3.
To increase V o :
R ext = (A – (D × V o )) / ( V o – V o nom ) [ Ω ]
Safety
These converters are tested with 1500 VDC from input
to output. The input-to-output resistance is greater
than 10 M ? . These converters are provided with Basic
Insulation between input and output. Nevertheless, if
the system using the converter needs to receive
safety agency approval, certain rules must be followed
in the design of the system. In particular, all of the
creepage and clearance requirements of the end-use
system must be observed.
In order to consider the output of the converter as
SELV (Safety Extra Low Voltage) or TNV-1, according
to IEC/EN 60950-1 and UL/CSA 60950-1, the follow-
ing requirements must be met in the system design:
? Fuse: As the converter has no internal fuse, an
external fuse must be provided to protect the
system from catastrophic failure. We recommend a
fuse with a rating not greater than 2.0 A. The user
can select a fuse with lower rating based upon the
maximum inrush transient and the maximum input
current at the minimum input voltage. Both input
traces and the chassis ground trace (if applicable)
must be capable of conducting a current of 1.5
times the value of the fuse without opening. The
fuse must not be placed in the grounded input line.
To reduce V o :
R ext = ((B × V o ) – C) / ( V o nom – V o )
[ Ω ]
? If the voltage source feeding the converter is
SELV, TNV-1, or TNV-2, the output of the con-
verter is considered SELV and may be grounded or
ungrounded.
Model
RFS06ZA
RFS06ZB
RDS06ZB
RFS06ZD
RFS06ZE
RDS05ZE
RFS04ZG
RDS04ZG
A
1945
2590
5010
7010
11260
B
1470
1730
2516
3161
4532
C
1944
2560
5010
7010
11240
D
470
750
1500
1500
1500
? The circuitry of the converter may generate
transients, which exceed the input voltage. Even if
the input voltage is SELV (<60 V), the components
on the primary side of the converter may have to
be considered as hazardous. A safety interlock
may be needed to prevent the user from accessing
the converter while operational.
Note : When the output voltage is trimmed up, the
output power from the converter must not exceed its
maximum rating. This is determined by measuring
the voltage on the output pins and multiplying it by
the output current.
BCD.00017 Rev. AA, 18-Oct-2010
Page 14 of 18
www.power-one.com
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