ha16142fp Renesas Electronics Corporation., ha16142fp Datasheet - Page 17

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

6. Integrator (PWM-CS detection operation)
PWM-RES
(internal signal)
PWM-CS
(current sense
TIM pin current
(integral output
TIM pin voltage
(integral output
LATCH STATUS
(for PFC-STOP)
LATCH STATUS
(for PWM-STOP)
Note: Timer time calculation equation
input)
current)
voltage)
Timer time t-tim2 is the time until PG pin inversion (from low to high) after the PWM-CS pin trigger.
t-tim2 can be set using the following approximate equation.
t-tim2
The time at which both the PFC and PWM functions are stopped by this timer can be calculated
using the following approximate equation.
t-tim2' = 1.65 ⋅ t − tim2 ⋅ ⋅ ⋅ ⋅ ⋅ Typical calculation
= −Ctim ⋅ (Vlch − pfc − 0.2V) / Isrc − tim2
= −Ctim ⋅ (2.5V − 0.2V) / (−33µA) ⋅ ⋅ ⋅ ⋅ ⋅ Typical calculation
5.2µA
−33µA
0.2V
PFC Enable
PWM Enable
1V
0
t-tim2
HA16141P/FP, HA16142P/FP
2.5V
t-tim2'
Rev.4, Sep. 2001, page 15 of 15
PFC Stop
4V
PWM Stop