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PWM5031 Datasheet(PDF) 11 Page - Aeroflex Circuit Technology

No. de pieza PWM5031
Descripción Electrónicos  RadHard High Speed PWM Controller
PDF  17 Pages
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Fabricante Electrónico  AEROFLEX [Aeroflex Circuit Technology]
Página de inicio  http://www.aeroflex.com
Logo AEROFLEX - Aeroflex Circuit Technology

PWM5031 Datasheet(HTML) 11 Page - Aeroflex Circuit Technology

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11
SCD5031 Rev B
Pre
lim
in
ar
y
FIGURE 6 – Current Sense Circuit
Error
1.4V
1V
Current
Comparators
2R
R
Amp
2
10
8
12
11
VSOFT
2.5V
VFB
COMP
CURRENT
SENSE
GND
RS
R
C
IS
Sense
S
R
Q
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
I
S
MAX
V
SOFT
1.4
–
3R
S
--------------------------------
=
FIGURE 7 – Error Frequency Amplifier Open-Loop Response
at +125°C & -55°C
Gain
Frequency Hz
dB
120
80
40
0
-40
10
100
1K
10K
100K
1M
10M
1
+125°C
-55°C



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