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參數(shù)資料
| 型號： | FSDM311L |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Green Mode Fairchild Power Switch (FPS) |
| 中文描述： | 1.5 A SWITCHING REGULATOR, 73 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | LSOP-8 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 377K |
| 代理商： | FSDM311L |
FSDM311
12
6. Burst operation :
In order to minimize the power dissipa-
tion in standby mode, the FSDM311 implements burst mode.
Figure 10. Circuit for burst operation
As the load decreases, the feedback voltage decreases. The
device automatically enters burst mode when the feedback
voltage drops below V
BURL
(0.55V). At this point switching
stops and the output voltages start to drop. This causes the
feedback voltage to rise. Once is passes V
BURH
(0.70V)
switching starts again. The feedback voltage falls and the
process repeats. Burst mode operation alternately enables
and disables switching of the power MOSFET to reduce the
switching loss in the standby mode.
Figure 11. Burst mode operation
OSC
4
Vfb
S
R
Q
GATE
DRIVER
5uA
400uA
0.70V
/0.55V
on/off
FSDM311
Burst operation Block
V
FB
Vds
0.55V
0.7V
Ids
Vo
Vo
set
time
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| FSES0765RGWDTU | Green Mode Fairchild Power Switch (FPS) for Green Mode Fairchild Power Switch (FPSTM) for |
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| FSF055D1 | 25A, 60V, 0.020 Ohm, Rad Hard, SEGR Resistant, N-Channel Power MOSFETs |
| FSF055D | 25A, 60V, 0.020 Ohm, Rad Hard, SEGR Resistant, N-Channel Power MOSFETs |
| FSF055R | 25A, 60V, 0.020 Ohm, Rad Hard, SEGR Resistant, N-Channel Power MOSFETs |
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