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參數(shù)資料
| 型號： | MC34167 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 500kHz and 1MHz High Efficiency 1.5A Switching Regulators; Package: SO; No of Pins: 8; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 射頻放大器 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 263K |
| 代理商： | MC34167 |
MC34167, MC33167
http://onsemi.com
15
1000
T1
+
+
MC34167
StepDown
Converter
0.001
0.001
Output 1
MBR20100CT
1000+
+
MC34167
StepDown
Converter
0.001
0.001
Output 2
MBR20100CT
1000+
+
MC34167
StepDown
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
=
MC34167 and MJE13005 5903B
T
2
=
MBR20100CT 5925B
+
+
The MC34167 can be used cost effectively in offline 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 selfoscillates at 50 kHz and is controlled by the saturation characteristics of T
2
. Multiple MC34167 post regulators can be used to provide
accurate independently regulated outputs for a distributed power system.
Figure 28. OffLine 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
Free Air
Mounted
Vertically
PD
R
JA
Figure 29. D
2
PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| MC34167D2T | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 40V 5A RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34167D2TG | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 40V 5A Buck/Boost/Inverting RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34167D2TR4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 40V 5A RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34167D2TR4G | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 40V 5A Buck/Boost/Inverting RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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