參數(shù)資料
型號: ML4841
廠商: Fairchild Semiconductor Corporation
英文描述: Variable Feedforward PFC/PWM Controller Combo(前饋可變PFC/PWM控制器組合芯片)
中文描述: 可變前饋式PFC / PWM控制器組合(前饋可變式PFC /脈寬調(diào)制控制器組合芯片)
文件頁數(shù): 13/15頁
文件大?。?/td> 149K
代理商: ML4841
ML4841
REV. 1.0 10/12/2000
13
AC INPUT
85 TO 265VAC
C1
680nF
ML4824
F1
3.15A
R5
300m
1W
BR1
4A, 600V
D12
1A, 50V
D13
1A, 50V
R2A
453k
R2B
453k
R3
75k
R4
13k
R1A
499k
R1B
499k
R12
27k
C6
1μF
C7
220pF
R11
750k
C19
1μF
C2
470nF
R27
22k
C18
470pF
R6
41.2k
R10
6.2k
C11
10nF
C3
100nF
C30
330μF
R21
22
C5
100μF
D1
8A, 600V
C4
10nF
R14
33
D10
1A, 40V
D8
1A, 40V
R7A
178k
R7B
178k
C12
10μF
D3
600V
Q1
IRF840
Q2
IRF830
C13
100nF
C14
1μF
IEAO
IAC
ISENSE
VRMS
SS
VDC
RAMP 1
RAMP 2
VEAO
VFB
VREF
VCC
PFC OUT
PWM OUT
GND
DC ILIMIT
Q3
IRF830
R15
3
C20
1μF
R28
240
12VDC
L1
3.1mH
L2
33μH
C21
1800μF
C24
1μF
RTN
D11
D5
600V
D6
600V
C25
100nF
R17
33
R30
4.7k
D7
15V
R22
8.66k
R25
2.26k
R20
820m
C15
10nF
C16
1μF
C31
1nF
R8
2.37k
C8
82nF
C9
8.2nF
C17
220pF
R19
220
R23
1.5k
R24
1.21k
C22
4.7μF
TL431
R26
10k
C23
100nF
R18
220
Figure 6. W Power Factor Corrected Power Supp.y.
minimize the momentary “no-load” period, thus lowering ripple
voltage generated by the switching action. With such synchronized
switching, the ripple voltage of the first stage is reduced.
Calculation and evaluation have shown that the 120Hz
component of the PFC’s output ripple voltage can be
reduced by as much as 30% using this method.
TYPICAL APPLICATIONS
Figure 6 is the application circuit for a complete 100W
power factor corrected power supply, designed using the
methods and general topology detailed in Application
Note 33.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ML4841CP 功能描述:功率因數(shù)校正 IC PFC Controller PWM Combo RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
ML4841CP_Q 功能描述:功率因數(shù)校正 IC PFC Controller PWM Combo RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
ML4841CS 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Variable Feedforward PFC/PWM Controller Combo
ML4841IP 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Variable Feedforward PFC/PWM Controller Combo
ML4841IS 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Variable Feedforward PFC/PWM Controller Combo