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參數(shù)資料
| 型號： | ML4813 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Flyback Power Factor Controller(倒轉(zhuǎn)功率因數(shù)控制器) |
| 中文描述： | 反激式功率因數(shù)控制器（倒轉(zhuǎn)功率因數(shù)控制器） |
| 文件頁數(shù)： | 13/15頁 |
| 文件大小： | 265K |
| 代理商： | ML4813 |
ML4813
13
INDUCTOR INFORMATION
L3 is the flyback inductor and also provides the operating
power for the control circuitry. A gapped ferrite pot core
was chosen for this application for it's modest high
frequency losses with high ripple current operation. Some
possible choices are:
Manufadurer
Part #
Total Gap
N
P
Magnetics Inc. F43019
Phillips
Phillips
0.05"
0.05"
0.07"
32
32
38
3019 PL00-3F3
3019 PA125-3C8
The first 2 cores are sold ungapped and require the use of
a .025. spacer to gap the center leg to yield a total gap
length of 0.05". If an ungapped core is used, a "shorted
turn" should be employed as shown in Figure 14 to
prevent radiated EMI. The third core listed is sold with its
center ieg pre-gapped (0.07" total) so that the outside of
the core closes completely, providing shielding without a
shorted turn. N
S
should be 3 turns. All windings are
#24AWG wire.
Inductors L1 and L2 are constructed using a powdered
iron. This is a suitable material for these inductors since
the high frequency ripple currents (and resulting flux
excursions) are much less severe than for L3. The core
selected is a MicroMetals T68-26D with 80 turns or
#24AWG wire.
APPLICATIONS
(Continued)
Figure 14. EMI Shielding for Ungapped Cores
SHORTED TURN
(COPPER FOIL)
0.25" SPACER
WINDINGS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ML4819 | Power Factor and PWM Controller “Combo” |
| ML4819CP | Power Factor and PWM Controller “Combo” |
| ML4821 | Power Factor Controller |
| ML4821CP | Power Factor Controller |
| ML4821CS | Power Factor Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ML4813CP | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Flyback Power Factor Controller |
| ML4813CS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Flyback Power Factor Controller |
| ML4813IP | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Flyback Power Factor Controller |
| ML4813IS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Flyback Power Factor Controller |
| ML4818 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Phase Modulation/Soft Switching Controller |
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