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參數(shù)資料
| 型號： | PTN78060HAS |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 45 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | DIP-7 |
| 文件頁數(shù)： | 13/28頁 |
| 文件大小： | 1948K |
| 代理商： | PTN78060HAS |
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π Filters
GND
C5
7
4
5
6
2
3
GND
Inhibit
1
Sense
Adjust
VI
VO
C1
1 F
m
50 V
Ceramic
C2*
2.2 mF
50 V
Ceramic
(Required)
L1
1 - 5 mH
L2
1 - 5 mH
VI
VO
PTN78060W
RSET
C3
#
100 mF
(Optional)
C4
1 mF
Ceramic
Recommended whenever I is greater than 2 A.
O
# See
section for suggested value and type.
Application Information
* See specifications for required value and type. For PTN78060H, C2 is equal to 3 x 4.7 F.
m
10
15
20
25
30
35
40
45
0
0.5
1
1.5
2
2.5
3
1 MHz
600 kHz
Attenuation
dB
Load Current A
PTN78060W, PTN78060H
SLTS229A – NOVEMBER 2004 – REVISED APRIL 2005
If a further reduction in ripple/noise level is required for an application, higher order filters must be used. A
π (pi)
filter, employing a ferrite bead (Fair-Rite part number 2673000701 or equivalent) in series with the input or output
terminals of the regulator reduces the ripple/noise by at least 20 db (see Figure 33 and Figure 34). In order for
the inductor to be effective ceramic capacitors are also required. (Note: see Capacitor Recommendations for
additional information on vendors and component suggestions.)
These inductors plus ceramic capacitors form an excellent filter because of the rejection at the switching
frequency (650 kHz - 1 MHz). The placement of this filter is critical. It must be located as close as possible to the
input or output pins to be effective. The ferrite bead is small (12,5 mm
× 3 mm), easy to use, low cost, and has
low dc resistance. Fair-Rite also manufactures a surface-mount bead (part number 2773021447). It is rated to 5
A, and can be used on the output bus. As an alternative, suitably rated 1-H to 5-H wound inductors can be
used in place of the ferrite inductor bead.
Figure 33. Adding
π Filters (I
O ≤ 3 A)
Figure 34.
π-Filter Attenuation vs. Load Current
20
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PTN78060HAST | 功能描述:DC/DC轉(zhuǎn)換器 3A Wide-In Wide Output Adj Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PTN78060HAZ | 功能描述:DC/DC轉(zhuǎn)換器 3A Wide-In Wide Output Adj Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PTN78060HAZT | 功能描述:DC/DC轉(zhuǎn)換器 3A Wide-In Wide Output Adj Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PTN78060W | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR |
| PTN78060W_09 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR |
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