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参数资料
| 型号： | F4810-R |
| 厂商： | POWER-ONE INC |
| 元件分类： | 数据传输滤波器 |
| 英文描述： | 1 FUNCTIONS, 80 V, 10 A, DATA LINE FILTER MODULE |
| 文件页数： | 3/41页 |
| 文件大小： | 1387K |
| 代理商： | F4810-R |
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MCD10059 Rev. 1.0
Page 11 of 41
www.power-one.com
F & FC Series DC-DC Converter Input Filters
F2410 & F4810, 0-45V/0-80V, 10 Amps, SMT Mount
caps to common line. Vertical scale: 10 dB/div, with zero dB
level marked by arrow.
Thermal Considerations
Because of low series internal DC resistance, the
F4810/F2410 filters generally do not require airflow
and/or derating to ambient temperatures up to 85 C,
if placed and interconnected as described below.
Good thermal design is consistent with appropriate
placement to gain additional heat exchange through
the I/O pins to the system board. For high
temperature operation in low airflow environments,
use of 1-2 oz copper for the external connection
pads and provision for some extra copper at all four
I/O pins is encouraged. Thermal derating data shown
were taken on special thermal board with each input
and output pin connected to 0.5 sq. in pad of 2 oz
copper.
To check filter thermal characteristic in an actual
system environment, attach a thermocouple to the
top of differential inductor, L2; it is the INDUCTOR
closest to OUT+ pin.
The maximum temperature at this test point should
not exceed 120 C, and a minimum of 5-10 C
headroom is suggested for better reliability.
A typical application schematic is shown in Fig. 5.
Either filter can be used to power one or more
converters. Maximum filter output current should be
limited 10 A - or less - depending upon system
thermal environment.
The required filter current drawn by the converter
loads, IREQ’d(Filter), will be the sum of the loads of all
connected converters:
IREQ’d(filter) = Σ[Pi,OUT/(VIN, min * ηi, min)]
[A]
where:
IREQ’d(filter)
maximum required filter current
Pi,OUT(converter)
converter output power, i=1, 2…
= Vi,OUT(converter) *
Ii,OUT(converter)
VIN, min
converter input voltage
ηi, min
converter minimum efficiency, i=1,
2,…
For applications requiring a filter current greater than
10 A, divide the converters into smaller groups and
use multiple filters. Do not connect filters in parallel.
Fig. 5: F4810 – Typical application
C6
C3
C7
Rload2
Vin (+)
Vin (-)
ON/OFF
Vout (+)
Vout (-)
TRIM
SENSE (+)
SENSE (-)
(Top View)
Converter
QmaXTMSeries
C9
C1
F4810
V
IN-
V
IN+
+48V
-48V
+Vout
-Vout
P3
P4
P1
P2
+
F1
12A
C2
C5
Rload1
Vin (+)
Vin (-)
ON/OFF
Vout (+)
Vout (-)
TRIM
SENSE (+)
SENSE (-)
(Top View)
Converter
QmaXTMSeries
C8
C4
(Top View)
Input Filter
For further information
regarding connection of CM
capacitors and other
pertinent layout and EMC
information, please refer to
the Layout Considerations
and EMI Considerations
Application notes.
DC-DC
Converter
(Top View)
DC-DC
Converter
(Top View)
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