ML4824-2 Fairchild Semiconductor, ML4824-2 Datasheet - Page 6

• Manufacturer Part Number: ML4824-2
• Description: The ML4824 is a controller for power factor corrected, switched mode power supplies
• Manufacturer: Fairchild Semiconductor

ML4824
Typical Performance Characteristics
6
Voltage Error Amplifier (VEA) Transconductance (g
15
2
4
3
7
I AC
V FB
V RMS
I SENSE
RAMP 1
2.5V
250
200
150
100
50
0
0
–
+
VEA
VEAO
MODULATOR
1
GAIN
16
2
V FB (V)
3.5k
3.5k
3
+
–
IEA
IEAO
Gain Modulator Transfer Characteristic (K)
400
300
200
100
4
0
Figure 1. PFC Section Block Diagram.
1
OSCILLATOR
0
5
+
–
1
m
)
V RMS (mV)
2
3
Current Error Amplifier (IEA) Transconductance (g
2.7V
–1V
4
PFC I LIMIT
250
200
150
100
50
–500
OVP
+
+
0
–
–
5
IEA INPUT VOLTAGE (mV)
S
R
S
R
0
PRODUCT SPECIFICATION
Q
Q
Q
Q
REV. 1.0.6 11/7/03
PFC OUT
500
12
m
)