ML4827CP-1 Micro Linear, ML4827CP-1 Datasheet - Page 6

• Manufacturer Part Number: ML4827CP-1
• Description: Fault-Protected PFC and PWM Controller Combo
• Manufacturer: Micro Linear

ML4827
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
3.5k
V FB (V)
3.5k
+
–
3
IEA
IEAO
Gain Modulator Transfer Characteristic (K)
400
300
200
100
1
Figure 1. PFC Section Block Diagram.
4
0
OSCILLATOR
0
+
–
5
1V
POWER FACTOR CORRECTOR
1
m
)
+
–
COMPARATOR
BROKEN WIRE
V RMS (mV)
2
Current Error Amplifier (IEA) Transconductance (g
3
2.7V
–1V
250
200
150
100
PFC I LIMIT
4
50
–500
0
+
–
+
–
OVP
5
2µA
IEA INPUT VOLTAGE (mV)
V REF
V CCZ
13.5V
0
R
R
S
S
Q
Q
Q
Q
V CC
REFERENCE
13
7.5V
PFC OUT
500
V REF
14
12
m
)