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參數(shù)資料
| 型號(hào)： | FA3647N |
| 廠商： | FUJI ELECTRIC CO LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | PWM control IC with light load power saving function For Switching Power Supply Control |
| 中文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數(shù)： | 19/21頁 |
| 文件大?。?/td> | 406K |
| 代理商： | FA3647N |
FA3641P(N), FA3647P(N)
76
Fig. 36 Gate circuit
When gate resistance differs between ON and OFF as shown
in Figure 36, the loss is given by:
(
... (17)
Example:
When Vcc = 18V, Qg = 80nC, fsw = 100kHz, and Rg = 10
, the
typical IC loss is given by:
Pdr = 1
18V
80nC
100kHz
2
(3) Total loss
The total loss (Pd) of the IC is the sum of the control circuit loss
(Pop) and the output circuit loss (Pdr) calculated previously:
Pd = Pop + Pdr .............................................................. (18)
Example:
The standard IC loss under the conditions used in (1) and (2)
above are:
Pd = Pop + Pdr = 34.2mW + 72.8mW = 107mW
Pdr = 1
Vcc Qg fsw
Ron
Roff
Rg1 Rg2 Ron
2
Rg1 Roff
)
15
10
15
(
7
10
7
=72.8mW
)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FA3647P | PWM control IC with light load power saving function For Switching Power Supply Control |
| FA365 | THIN SMD HIGH-FREQUENCY CRYSTAL UNIT |
| FA-365 | THIN SMD HIGH-FREQUENCY CRYSTAL UNIT |
| FA3675F | For Switching Power Supply Control |
| FA3863X | SUPER BRIGHT LED |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FA3647N-H1 | 制造商:Fuji Electric 功能描述: |
| FA3647P | 制造商:FUJI 制造商全稱:Fuji Electric 功能描述:PWM control IC with light load power saving function For Switching Power Supply Control |
| FA3647P-D1 | 制造商:Fuji Electric 功能描述: |
| FA365 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THIN SMD HIGH-FREQUENCY CRYSTAL UNIT |
| FA-365 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THIN SMD HIGH-FREQUENCY CRYSTAL UNIT |
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