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參數(shù)資料
| 型號： | PWM5031-DIE |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, UUC |
| 封裝： | DIE |
| 文件頁數(shù)： | 3/19頁 |
| 文件大?。?/td> | 236K |
| 代理商： | PWM5031-DIE |
11
SCD5031 Rev L 11/3/08
Aeroflex Plainview
FIGURE 6 – Current Sense Circuit
Error
1.4V
1V
Current
Comparators
2R
R
Amp
5
7
4
12
6
VSOFT
2.5V
VFB
CURRENT
SENSE
VEE
RS
R
C
IS
Sense
S
R
Q
Peak Current (Is) is determined by the formula:
A small RC filter may be required to suppress switch transients
I
S
MAX
1.0V
R
S
------------
=
or if
I
S
MAX
V
SOFT
1.4
–
3R
S
--------------------------------
=
V
R
S
1Volt
<
then
COMP
FIGURE 7 – Error Amplifier Open-Loop Frequency Response
at +125°C & -55°C
Gain
Frequency Hz (Log Scale)
dB
120
80
40
0
-40
10
100
1K
10K
100K
1M
10M
1
+125°C
-55°C
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