HA16142FP Datasheet, PDF (17/20 Pages) Renesas Technology Corp – PFC and PWM Controller

6. Integrator (PWM-CS detection operation)
PWM-RES
(internal signal)
PWM-CS
(current sense
input)
TIM pin current
(integral output
current)
1V
5.2µA
0
−33µA
HA16141P/FP, HA16142P/FP
4V
2.5V
TIM pin voltage
(integral output
voltage)
0.2V
LATCH STATUS
(for PFC-STOP)
PFC Enable
LATCH STATUS
(for PWM-STOP)
PWM Enable
t-tim2
PFC Stop
t-tim2'
PWM Stop
Note: Timer time calculation equation
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 = −Ctim ⋅ (Vlch − pfc − 0.2V) / Isrc − tim2
= −Ctim ⋅ (2.5V − 0.2V) / (−33µA) ⋅ ⋅ ⋅ ⋅ ⋅ Typical calculation
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
Rev.4, Sep. 2001, page 15 of 15