ha16142fp Renesas Electronics Corporation., ha16142fp Datasheet - Page 14

• Manufacturer Part Number: ha16142fp
• Description: Pfc And Pwm Controller
• Manufacturer: Renesas Electronics Corporation.

HA16141P/FP, HA16142P/FP
3. PFC controller status (cont.)
Rev.4, Sep. 2001, page 12 of 12
Notes:
Notes: 4.
Step-up voltage
+B
PFC-FB
2/
PFC-OUT
3.
Precondition: VREF GOOD, PFC-ON, Non latched.
PFC-FB (cont.)
The actual input voltage to the PFC-FB pin is the step-up voltage divided with a resistance (see figure below).
If R1 is set as 710 kΩ and R2 as 4.7 kΩ, the decision voltage at the step-up pin (+B) is as shown in the figure below.
All numeric values in the figure are typical values.
418V
356V
2.75V
2.34V
+B
R1
R2
710kΩ
4.7kΩ
PFC-FB
PFC-V
2.5V
395V
2.60V
+
−
AMP
Power Good Period
PFC-EO
To Multiplier
1.70V
259V
380V
(Typical Output Voltage)
2.5V
(PFC Feedback Voltage)