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參數(shù)資料
| 型號： | LX1562IDM |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SECOND-GENERATION POWER FACTOR CONTROLLER |
| 中文描述： | 0.5 A POWER FACTOR CONTROLLER, PDSO8 |
| 封裝： | ROHS COMPLIANT, PLASTIC, SOIC-8 |
| 文件頁數(shù)： | 21/25頁 |
| 文件大?。?/td> | 443K |
| 代理商： | LX1562IDM |
S
ECOND
-G
ENERATION
P
OWER
F
ACTOR
C
ONTROLLER
LX1562/1563
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
21
Copyright 1996
Rev. 1.3 12/96
P
R O D U C T I O N
D
A T A
S
H E E T
A P P L I C AT I O N I N F O R M AT I O N
POWER MOSFET SELECTION
The voltage rating of MOSFET and rectifier must be higher than
the maximum value of the output voltage.
V
DS
≥
1.2 V
O MAX
V
DS
≥
282V
The RMS current can be approximated by multiplying the RMS
current at the peak of the line by 0.7.
I
RMS
= 0.7 I
LP
√
D/3
D
≡
On-time duty cycle
D = 0.39 at V
AC
= 100V
I
LP
= 2.4A
I
RMS
= (0.7)(2.4)(
√
.39/3) = 0.61A
P
DC
I
RMS
R
DS
≤
P
DC
≡
allowable power
dissipation.
1
0.61
I
RMS
/triangle = I
LP
√
D/3
R
DS
≤
= 1.6
IRF730 with R
DS
= 1
and V
DS
= 400V
meets the above
requirements.
2
I
LP
D
INPUT RECTIFIER AND CAPACITOR SELECTION
The current through each diode is a half-wave rectified sine wave.
The maximum current happens at minimum line with a peak
value of 1.2A.
I
PEAK
π
π
I
AVE
=
=
= 0.38A
choose
1N4004 with 1A rating.
P
DISS
= (I
AVE
) (V
F
) = 0.38 x 0.9 = 0.344W
T
J
= T
A
+ P
D
x
θ
JA
assuming
θ
JA
= 65°C/W for 1/8"
lead length.
T
J
= 80 + (.344)(65) = 102°C
1.2
Assuming
is the percentage of allowable input current ripple,
C1 can be calculated using the following equations:
2 P
O
η
I
P
R
EFF
=
C1
≥
f
SW
≡
Switching frequency
of inductor current
at peak input voltage.
if
= 3%
R
EFF
=
= 117
C1
≥
= 0.9μF
choose
1μF, 250V capacitor
.
2
1
2
π
R
EFF
f
SW
2 x 80
(.95)(1.2)
2
1
(.03)(2
π
)(117)(50000)
OUTPUT CAPACITOR SELECTION
There are mainly two criteria for selecting the output capacitor:
A large enough capacitance to maintain a low ripple voltage, and
a low ESR value in order to prevent high power dissipation due
to RMS currents.
The output capacitance can be approximated from the following
equation:
I
DC
2
π
f
LINE
V
C6
≥
where: I
≡
DC output current
DV
≡
Output ripple
I
DC
=
= 0.348A
assuming 5% peak to peak ripple,
0.348
2
π
(60) (11.5)
C6
≥
= 81μF
choose
C6 = 100μF
.
80
230
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相關(guān)代理商/技術(shù)參數(shù) |
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| LX1562IDMT | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Power Factor Controller |
| LX1562IM | 功能描述:IC PFC CONTROLLER 8DIP RoHS:是 類別:集成電路 (IC) >> PMIC - PFC（功率因數(shù)修正） 系列:- 產(chǎn)品培訓(xùn)模塊:GreenChip Synchronous Rectification Control Family of ICs 標(biāo)準(zhǔn)包裝:1 系列:- 模式:間歇導(dǎo)電（DCM） 頻率 - 開關(guān):- 電流 - 啟動:- 電源電壓:8.6 V ~ 38 V 工作溫度:-20°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SO 包裝:Digi-Reel® 其它名稱:568-5348-6 |
| LX1563 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:SECOND-GENERATION POWER FACTOR CONTROLLER |
| LX1563IDM | 功能描述:IC CONTROLLER PFC 9.8V 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - PFC（功率因數(shù)修正） 系列:- 產(chǎn)品培訓(xùn)模塊:GreenChip Synchronous Rectification Control Family of ICs 標(biāo)準(zhǔn)包裝:1 系列:- 模式:間歇導(dǎo)電（DCM） 頻率 - 開關(guān):- 電流 - 啟動:- 電源電壓:8.6 V ~ 38 V 工作溫度:-20°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SO 包裝:Digi-Reel® 其它名稱:568-5348-6 |
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