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參數(shù)資料
| 型號(hào)： | MC34167T |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 8 A SWITCHING REGULATOR, 81 kHz SWITCHING FREQ-MAX, PSFM5 |
| 封裝： | TO-220, 5 PIN |
| 文件頁數(shù)： | 13/16頁 |
| 文件大小： | 408K |
| 代理商： | MC34167T |
MC34167 MC33167
13
MOTOROLA ANALOG IC DEVICE DATA
Figure 27. Off–Line Preconverter
1000
T1
+
+
MC34167
Step–Down
Converter
0.001
0.001
Output 1
MBR20100CT
1000
+
+
MC34167
Step–Down
Converter
0.001
0.001
Output 2
MBR20100CT
1000
+
+
MC34167
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
T2
1N5404
115 VAC
T1 = Core and Bobbin – Coilcraft PT3595
T1 =
Primary – 104 turns #26 AWG
T1 =
Base Drive – 3 turns #26 AWG
T1 =
Secondaries – 16 turns #16 AWG
T1 =
Total Gap – 0.002,
T2 = Core – TDK T6 x 1.5 x 3 H5C2
T2 =
14 turns center tapped #30 AWG
T2 =
Heatsink = AAVID Engineering Inc.
T2 =
MC34167 and MJE13005 – 5903B
T2 =
MBR20100CT – 5925B
+
+
The MC34167 can be used cost effectively in off–line applications even though it is limited to a maximum input voltage of 40 V. Figure 27 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 T1 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 T2. Multiple MC34167 post regulators can be used to provide accurate independently regulated outputs for a distributed power
system.
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)
PD(max) for TA = +50
°
C
Minimum
Size Pad
2.0 oz. Copper
Free Air
Mounted
Vertically
PD
R
θ
JA
Figure 28. D2PAK 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 |
|---|---|
| MC34167TG | 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 |
| MC34167TG | 制造商:ON Semiconductor 功能描述:Power Supply IC |
| MC34167TH | 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 |
| MC34167THG | 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 |
| MC34167TV | 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 |
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