ISL1902 Datasheet, PDF (13/25 Pages) Intersil Corporation – Full-Featured, Dimmable AC Mains LED Driver with PFC

ISL1902
Test Waveforms and Circuits (Continued)
OC THRESHOLD
OC
OUT
LEADING EDGE BLANKING
OC PROPAGATION DELAY
OC + LEB TO OUT DELAY
FIGURE 9. OC +LEB TO OUT DELAY
t_DELAY
AC
MAINS
PLACEHOLDE_tDELAR_Y
INRUSH
FIGURE 10. AC MAINS TO INRUSH TIMING
VDD
0.1µF
0.4V
90/140µA
5kΩ
54kΩ
1 VDD
OUT 24
2 PRELOAD PWMOUT 23
3 OFFREF INRUSH 22
4 VREF
GND 21
5 IOUT
AC 20
6 CS+
OVP 19
ISL1902
7 CS-
LOUT 18
8 REFIN
LREF 17
9 LPOUT
LFB 16
10 OC
RAMP 15
11 FB2
VERR 14
12 FB1
DELADJ 13
90/140µA
10kΩ
470pF
FIGURE 11. ERROR AMPLIFER INPUT OFFSET TEST CIRCUIT
13
FN7981.2
March 20, 2013