ha16174p Renesas Electronics Corporation., ha16174p Datasheet - Page 35

• Manufacturer Part Number: ha16174p
• Description: Power Factor Correction Controller Ic
• Manufacturer: Renesas Electronics Corporation.

HA16174P/FP
System Diagram
Rev.1.00 Jan 06, 2006 page 35 of 36
720 k
2.2 µ
From
VRB1 (B+ monitor1)
0.016
(5 W)
Rec+
Rec–
3.3 n
1000 p
470 p
VREF
820 k
100
33 n
3 M
PFC-ON
1.75 M
20 k
56 k
30 k
24 k
27 k
PGADJ
VREF
1000 p
CAO
0.01 µ
IAC
EO
RT
CT
CS
FB
10
12
14
13
9
7
8
5
4
IAC
From OUT
IMO = K × {IAC × (VEO – 1V)}
0.1 µ
2.5 V
T1
Q1
K
15.4 µs
IMO
V
2.40 V
Oscillator
0.65 V
AMP
770 ns
Selector
0.50 V
0.95 V
470 µ
(450 V)
Gain
3.3 k
S
R
3.6 V
65 kHz
1.75 V
1.60 V
C
24 V
Q
Q
AMP
K = 0.20
K = 0.05
Select
Gain
B+PG
RESET
VCC
B+
VREF
GOOD
27.5 V
RAMP
55 k
4.7 µ
PFC-DT
16
S
R
VREF
Q
Q
VREF
H
L
680 k
C
IN
OUT
IN
OUT
SS
LIMIT
9.0 V
10.5 V
Reset:
Vcc<5 V
UVLO
Shut
down
– 0.30 V
from
auxiliary
2.688 V
2.638 V
2.638 V
R
S
PFC
DELAY
PG
DELAY
R
S
R
S
3.0 V
Q
Q
Q
Q
Q
Q
DELAY
RESET
PFC
DELAY
PG
DELAY
To FB
Shut
down
FB LOW
B+OVP
UVL
B+PG
RESET
S
R
S
R
Q
Q
Q
Q
Generator
5 V VREF
B+GOOD
680 k
PFC-OFF
VRB1
VREF
GOOD
2.50 V
1.25 V
VREF GOOD
DELAY
RESET
Gate Driver
+/– 1.0 A (PEAK)
Out
In
5 V Internal Bias
VREF
Circuit Ground
4.0 V
25 µA
B+ OUT
VREF
100 µA
(385 V dc)
10 µA
15
11
6
1
3
2
GND
VREF
OUT
DELAY
SS
GND
PG
5.1 k
To
Q1 gate
4.7 µ
2.2 µ
VREF
0.1 µ
VREF