STEVAL-ILL013V1 Datasheet, PDF (8/43 Pages) STMicroelectronics – 80 W offline LED driver with PFC

UM0670
Design concept
Figure 4. Modified buck converter with dimming design concept
Vc = 16 V generated by the first converter
Additional board
L78L33
VIN = 400 V generated by the first converter
STPSC806D
80 W LEDs
VDD VSS
ST7LITEU05
CLKIN PWM
NC ICCCLK
RESET AIN2
INV VCC
L6562A
COMP GD
MULT GND
CS ZCD
STF9NM50N
ICC
programming
External module
for brightness regulation
Fixed off-time
network
PWM signal 0% to 100%
350 mA
700 mA
1A
AM00414
Doc ID 15327 Rev 2
8/43