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參數資料
| 型號： | MC34166TH |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 6 A SWITCHING REGULATOR, 81 kHz SWITCHING FREQ-MAX, PZFM5 |
| 封裝： | TO-220, 5 PIN |
| 文件頁數： | 15/20頁 |
| 文件大小： | 239K |
| 代理商： | MC34166TH |
MC34166, MC33166
http://onsemi.com
15
1000
T1
+
+
MC34166
Step-Down
Converter
0.001
0.001
Output 1
MBR20100CT
1000+
+
MC34166
Step-Down
Converter
0.001
0.001
Output 2
MBR20100CT
1000+
+
MC34166
Step-Down
Converter
0.001
0.001
Output 3
MBR20100CT
0.01
RFI
Filter
100
3.3
1N4003
MJE13005
220
0.047
1N4937
50
100k
T
2
1N5404
115 VAC
T
1
= Core and Bobbin - Coilcraft PT3595
T
1
=
Primary - 104 turns #26 AWG
T
1
=
Base Drive - 3 turns #26 AWG
T
1
=
Secondaries - 16 turns #16 AWG
T
1
=
Total Gap - 0.002
″
T
2
= Core - TDK T6 x 1.5 x 3 H5C2
T
2
=
14 turns center tapped #30 AWG
T
2
=
Heatsink = AAVID Engineering Inc.
T
2
=
MC34166 and MJE13005 - 5903B
T
2
=
MBR20100CT - 5925B
+
+
The MC34166 can be used cost effectively in off–line applications even though it is limited to a maximum input voltage of 40 V. Figure 28 shows
a simple and efficient method for converting the AC line voltage down to 24 V. This preconverter has a total power rating of 125 W with a conversion
efficiency of 90%. Transformer T
1
provides output isolation from the AC line and isolation between each of the secondaries. The circuit
self–oscillates at 50 kHz and is controlled by the saturation characteristics of T
2
. Multiple MC34166 post regulators can be used to provide
accurate independently regulated outputs for a distributed power system.
Figure 28. Off–Line Preconverter
R
θ
,
J
J
°
30
40
50
60
70
80
1.0
1.5
2.0
2.5
3.0
3.5
0
10
20
30
25
15
5.0
L, LENGTH OF COPPER (mm)
P
D(max)
for T
A
= +50
°
C
Minimum
Size Pad
2.0 oz. Copper
L
L
Free Air
Mounted
Vertically
PD
R
θ
JA
Figure 29. D
2
PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC34166THG | 功能描述:直流/直流開關調節器 40V 3A Buck/Boost/Inverting RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34166TV | 功能描述:直流/直流開關調節器 40V 3A RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34166TVG | 功能描述:直流/直流開關調節器 40V 3A Buck/Boost/Inverting RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34167 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:POWER SWITCHING REGULATORS |
| MC34167_05 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:5.0 A, Step−Up/Down/Inverting Switching Regulators |
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