HA16178P Renesas Technology, HA16178P Datasheet - Page 11

• Manufacturer Part Number: HA16178P
• Description: Power Factor Correction Controller IC
• Manufacturer: Renesas Technology

HA16178P/FP
5. PFC ON/OFF Function
REJ03D0903-0100 Rev.1.00 Jun 12, 2007
Page 11 of 24
(Internal signal)
PFC-OFF
PFC-ON
Vac
Rec+
Rec–
71.9 V
1.75 V
R1
720 k
R2
20 k
PFC ON status
C1
2.2 µ
V
PFC-ON (DC)
Vac =
Em
=
=
V
2 × √2 × Vac
2 × Em
5
PFC-ON (DC)
PFC-ON
π
2 × √2
π
×
R1 + R2
× π
×
R2
R1 + R2
×
R2
R1 + R2
R2
1.75 V
1.60 V
PFC ON/OFF control
65.8 V
1.60 V