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參數資料
| 型號： | MC33368D |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | 50mA Switched-Cap DC/DC Converter 8-MSOP |
| 中文描述： | 0.01 A POWER FACTOR CONTROLLER, PDSO14 |
| 封裝： | PLASTIC, SO-16/14 |
| 文件頁數： | 13/20頁 |
| 文件大小： | 476K |
| 代理商： | MC33368D |
MC33368
http://onsemi.com
13
Figure 17. Power Factor Test Setup
1
0
AC Power
Analyzer
PM1000
A
V
Voltech
EMI Filter
T
2X Step–up
Isolation
Transformer
Autoformer
115 Vrms
Input
Line
Neutral
0 to 270 Vac
Output to
Power Factor
Correction
Circuit
HI
HI
L.O.
L.O.
0.1
1.0
W
VA
PF VrmsArms
VD
Acf Ainst Freq HARM
An RFI filter is required for best performance when connecting the preconverter directly to the ac line. The filter attenuates the level of high frequency switching that
appears on the ac line current waveform. Figures 15 and 16 work well with commercially available two stage filters such as the Delta Electronics 03DPCG6. Shown
above is a single stage test filter that can easily be constructed with four ac line rated capacitors and a common–mode transformer. Coilcraft CMT3–28–2 was used
to test Figures 15 and 16. It has a minimum inductance of 28 mH and a maximum current rating of 2.0 A. Coilcraft CMT4–17–9 was used to test Figure 19. It has a
minimum inductance of 17 mH and a maximum current rating of 9.0 A. Circuit conversion efficiency
η
(%) was calculated without the power loss of the RFI filter.
Figure 18. On/Off Control
Multiplier
8
C1
22
Frequency
Clamp
R
R
S
S
Q
S
Timer
R
Vref
Leading Edge
Blanking
Low
Load Detect
Comp
FB
6
LEB
13
PGnd
Gate
ZCD
VCC
Line
RD
AGnd
MC33368
16
12
7
11
10
FC
9
3
1
4
Quickstart
Overvoltage
Comparator
Set Domnant
1.5 V
15 V
Q
5.0 V
Reference
DC
Out
D5
C3
330
MTW14N50E
Q1
D6
C4
100
T
R4
22 k
EMI
Filter
92 to
270 Vrms
R7
0.1
C5
1.0
R5
1.3 M
R3
10 k
C2
0.01
R1
10 k
R2
820 k
R8
10 k
C9
330
μ
F
D1
D3
D2
D4
R11
10
15 V
C6
0.1
13/8.0
UVLO
1.2/1.0
R13
51
D8
RS Latch
Vref
Vref
Vref
CS
2
5
Mult
VCC
6.9 V
1.0 k
10 k
1.0 k
2N3904
1N4148
On/Off
Input
Zero
Current
Detect
1.08 x Vref
5.0 V
Off
0 V
On
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC33368DG | 功能描述:功率因數校正 IC High Voltage PFC w/Critical Mode 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 |
| MC33368DG | 制造商:ON Semiconductor 功能描述:DC/DC Converter (DC-DC) / Switching Regu |
| MC33368DR2 | 功能描述:功率因數校正 IC High Voltage 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 |
| MC33368DR2G | 功能描述:功率因數校正 IC High Voltage PFC w/Critical Mode 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 |
| MC33368P | 功能描述:功率因數校正 IC High Voltage 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 |
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