參數(shù)資料
型號: ML4827IP-2
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: Fault-Protected PFC and PWM Controller Combo
中文描述: 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, PDIP16
封裝: PLASTIC, DIP-16
文件頁數(shù): 6/16頁
文件大?。?/td> 256K
代理商: ML4827IP-2
ML4827
6
TYPICAL PERFORMANCE CHARACTERISTICS
250
200
150
100
50
0
T
VFB (V)
0
5
3
1
4
2
250
200
150
100
50
0
–500
T
IEA INPUT VOLTAGE (mV)
500
0
400
300
200
100
0
V
VRMS (mV)
0
5
3
1
4
2
Voltage Error Amplifier (VEA) Transconductance (g
m
)
Current Error Amplifier (IEA) Transconductance (g
m
)
Gain Modulator Transfer Characteristic (K)
Figure 1. PFC Section Block Diagram.
VEAO
IEAO
VFB
IAC
VRMS
ISENSE
RAMP 1
OSCILLATOR
OVP
PFC ILIMIT
VREF
POWER FACTOR CORRECTOR
BROKEN WIRE
COMPARATOR
2.5V
+
+
7.5V
REFERENCE
VCC
VCCZ
VEA
+
IEA
+
+
+
PFC OUT
S
R
Q
Q
S
R
Q
Q
2.7V
–1V
1V
GAIN
MODULATOR
3.5k
3.5k
13.5V
14
12
15
2
4
3
7
16
1
13
VREF
2μA
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