HA16141P_05 RENESAS [Renesas Technology Corp], HA16141P_05 Datasheet - Page 14

• Manufacturer Part Number: HA16141P_05
• Description: PFC and PWM Controller
• Manufacturer: RENESAS [Renesas Technology Corp]

HA16141P/FP, HA16142P/FP
5. Integrator (OC detection operation)
Rev.5.00 Jun 15, 2005 page 14 of 17
PWM-RES
(internal signal)
O.C
(overcurrent
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
detection input)
current)
voltage)
Timer time t-tim1 is the time until PG pin inversion (from low to high) after the O.C pin trigger.
t-tim1 can be set using the following approximate equation.
t-tim1 = −Ctim ⋅ (Vlch − pfc − 0.2V) / Isrc − tim1
= −Ctim ⋅ (2.5V − 0.2V) / (−21µA) ⋅ ⋅ ⋅ ⋅ ⋅ Typical calculation
5.2µA
−21µA
0.2V
0.3V
PFC Enable
PWM Enable
0
t-tim1
2.5V
PFC Stop
3V