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參數資料
| 型號： | MC33260DG |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | GreenLine TM Compact Power Factor Controller: Innovative Circuit for Cost Effective Solutions |
| 中文描述： | 0.5 A POWER FACTOR CONTROLLER, PDSO8 |
| 封裝： | LEAD FREE, SOIC-8 |
| 文件頁數： | 19/22頁 |
| 文件大小： | 232K |
| 代理商： | MC33260DG |
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
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC33260DR2 | 功能描述:功率因數校正 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 |
| MC33260PG | 功能描述:功率因數校正 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 |
| MC33261 | 制造商:SPC Multicomp 功能描述:HEATSINK TO220/218 16.7/W 制造商:SPC Multicomp 功能描述:HEATSINK TO220/218 16.7C/W 制造商:SPC Multicomp 功能描述:HEAT SINK; Packages Cooled:TO-218 / TO-220; Thermal Resistance:16.7C/W; External Height - Imperial:1"; External Height - Metric:25.4mm; External Width - Imperial:0.654"; External Width - Metric:16.6mm; Heat Sink Material:Aluminium ;RoHS Compliant: Yes |
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