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參數(shù)資料
| 型號： | MC33260 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | GreenLine Compact Power Factor Controller(GreenLine技術功率因數(shù)控制器) |
| 中文描述： | 二七二三六七六七小巧的功率因數(shù)控制器（二七二三六七六七技術功率因數(shù)控制器） |
| 文件頁數(shù)： | 19/22頁 |
| 文件大?。?/td> | 221K |
| 代理商： | MC33260 |
MC33260
http://onsemi.com
19
Figure 38. Circuit Supply Voltage
1
8
7
6
5
2
3
4
M
D1...D4
+
V
CC
15 V
C
pin8
+
r
R
stup
PDIP8 CONFIGURATION SHOWN
MC33260 V
CC
SUPPLY VOLTAGE
In some applications, the arrangement shown in Figure 38
must be implemented to supply the circuit. A startup resistor
is connected between the rectified voltage (or onehalf
wave) to charge the MC33260 V
CC
up to its startup
threshold (11 V typically). The MC33260 turns on and the
V
CC
capacitor (C
pin8
) starts to be charged by the PFC
transformer auxiliary winding. A resistor, r (in the range of
22 ) and a 15 V Zener should be added to protect the circuit
from excessive voltages.
When the PFC preconverter is loaded by an SMPS, the
MC33260 should preferably be supplied by the SMPS itself.
In this configuration, the SMPS starts first and the PFC gets
active when the MC33260 V
CC
supplied by the power
supply, exceeds the device startup level. With this
configuration, the PFC preconverter doesn’t require any
auxiliary winding and finally a simple coil can be used.
PCB LAYOUT
The connections of the oscillator and V
control
capacitors
should be as short as possible.
Figure 39. Preconverter Loaded by a Flyback SMPS: MC33260 V
CC
Supply
1
8
7
6
5
2
3
4
M
V
CC
SMPS Driver
+
+
+
+
+
+
Preconverter Output
+
DIP8 CONFIGURATION SHOWN
相關PDF資料 |
PDF描述 |
|---|---|
| MC33262CDR2 | Power Factor Controllers |
| MC33262CDR2G | Power Factor Controllers |
| MC33262DG | Power Factor Controllers |
| MC33262DR2 | Power Factor Controllers |
| MC33262DR2G | Power Factor Controllers |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MC33260D | 功能描述:功率因數(shù)校正 IC Critical Conduction RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| MC33260DG | 功能描述:功率因數(shù)校正 IC Critical Conduction Mode PFC RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| MC33260DR2 | 功能描述:功率因數(shù)校正 IC Critical Conduction RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| MC33260DR2G | 功能描述:功率因數(shù)校正 IC Critical Conduction Mode PFC RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| MC33260P | 功能描述:功率因數(shù)校正 IC Critical Conduction RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
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