ha16158 Renesas Electronics Corporation., ha16158 Datasheet - Page 15

• Manufacturer Part Number: ha16158
• Description: Pfc & Pwm Control Ic
• Manufacturer: Renesas Electronics Corporation.

HA16158P/FP
Rev.2.00 Jan 30, 2007 page 15 of 23
AC Voltage
Vac
PFC-ON
PFC status
(internal signal)
Multiplier gain
(internal signal)
PFC-SS
compare
voltage
(internal signal)
Em
−0.25
−0.50
0Vac
OFF
0.25
0.05
ON
0V
2.2µF
C1
62Vac
1.5V
720kΩ
12kΩ
R1
R2
Rec+
PFC-ON(dc)
PFC-ON(dc) = 2 ∗ Em / π ∗ R2 / (R1 + R2)
PFC-ON
156Vac
5
3.8V
Figure 5
= 2 ∗ √2 ∗ Vac / π ∗ R2 / (R1 + R2)
1.5V
1.2V
3.8V
3.4V
PFC ON period
PFC-ON/OFF control
Multiplier gain switching
PFC-CS compare
voltage switching
140Vac
3.4V
49Vac
1.2V