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ML4841 데이터시트(PDF) 6 Page - Micro Linear Corporation

부품명 ML4841
상세설명  Variable Feedforward PFC/PWM Controller Combo
PDF  15 Pages
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제조업체  MICRO-LINEAR [Micro Linear Corporation]
홈페이지  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML4841 데이터시트(HTML) 6 Page - Micro Linear Corporation

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ML4841
6
TYPICAL PERFORMANCE CHARACTERISTICS
Voltage Error Amplifier (VEA) Transconductance (gm)
Current Error Amplifier (IEA) Transconductance (gm)
Variable Gain Control Transfer Characteristic
Figure 1. PFC Section Block Diagram.
15
VEAO
IEAO
VFB
IAC
VRMS
ISENSE
RAMP 1
OVP
PFC ILIMIT
VREF
2.5V
+
-
-
+
16
2
4
3
7.5V
REFERENCE
14
VCC
13
VCCZ
VEA
8
-
+
IEA
1
+
-
+
-
PFC OUT
12
S
R
Q
Q
S
R
Q
Q
2.7V
-1V
FROM PWM
OSCILLATOR
GAIN
MODULATOR
÷2
3.5k
Ω
3.5k
Ω
13.5V
8V
UVLO
VCCZ
250
200
150
100
50
0
VFB (V)
05
3
14
2
250
200
150
100
50
0
IEA Input Voltage (mV)
-500
500
0
400
300
200
100
0
VRMS (mV)
05
3
14
2



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