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参数资料
| 型号： | FHS42ZH8 |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 500 W DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 8/11页 |
| 文件大小： | 160K |
| 代理商： | FHS42ZH8 |
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
REV. SEP 20, 2002
Page 6 of 11
Typical Application
Figure 7 below shows the recommended connections
for the FHS Series converter.
+V o
+ S ense
Trim
-S ense
-V o
-V i
+V i
O n/O ff
Fuse
C1
C2
C3
FH SX XZX
Fig.7 Typical Application of FHS Series
The FHS Series converters do not require any external
components for proper operation.
However, if the
distribution of the input voltage to the converter
contains significant inductance, the capacitor C1 may
be required to enhance performance of the converter.
A minimum of a 33μF electrolytic capacitor with the
ESR<0.7
is recommended for the FHS Series.
Refer to the “Inrush Current Control Application Note”
on www.power-one.com for suggestions on how to limit
the magnitude of the inrush current.
For output
decoupling we recommend to use a 10μF
tantalum and a 1μF ceramic capacitors connected
directly across the output pins of the converter. Note,
that the capacitors do not substitute the filtering
required by the load.
Shutdown Feature Description
The ON/OFF pin in the FHS Series converters
functions as a normal soft shutdown. It is referenced
to the –Vin pin or signal ground (see Figure 7). With
the positive logic, when the ON/OFF pin is pulled low,
the output is turned off and the unit goes into a very
low input power mode.
With negative logic, when the ON/OFF pin is pulled
low, the unit is turned on.
An open collector switch is recommended to control
the voltage between the ON/OFF pin and the -Vin pin
of the converter.
The ON/OFF pin is pulled up
internally, so no external voltage source is required.
The user should avoid connecting a resistor
between the ON/OFF pin and the +Vin pin.
When the ON/OFF pin is used to achieve remote
control, the user must take care to insure that the
pin reference for the control is really the -Vin pin.
The control signal must not be referenced ahead of
EMI filtering, or remotely from the unit.
Optically
coupling the information and locating the optical
coupler directly at the module will solve any of
these problems.
Note:
If the ON/OFF pin is not used, it can be left floating
(positive logic), or connected to the -Vin pin
(negative logic).
Output Voltage Trim
Industry Standard Positive Trim (suffix –T) The
-T option units trim up with a resistor from the TRIM
pin to the Vsense pin and trim down with a resistor
from the TRIM pin to the VsenseRTN pin as shown
in the Figure 8.
Fig.8 FHS Series Positive Trim Schematic
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相关代理商/技术参数 |
参数描述 |
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| FHS42ZH-NT | 制造商:Power-One 功能描述:- Bulk |
| FHS44010 | 制造商:n/a 功能描述:Ships in 2 days |
| FHS-440-10 | 制造商:PennEngineering (PEM) 功能描述: |
| FHS44012 | 制造商:n/a 功能描述:Ships in 2 days |
| FHS-440-12 | 制造商:PennEngineering (PEM) 功能描述: |
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