Test Setup - STMicroelectronics LED7707 Application Note

AN2810
8

Test setup

An appropriate white LED array is required as a load to correctly evaluate the LED7706.
Figure 7
demonstration board includes 60 white LEDs (150 mA), switches, jumpers and test points
which can be used to easily perform functional testing of the LED7707.
Figure 7.
Figure 8
Figure 8.
shows a possible assembly of the LED7707 with a WLED test board. This
LED7707 demonstration board and white LED test board assembly
shows the complete test setup.
LED7707 demonstration board test setup
ROW1 ROW1
CH1 CH1 CH2 CH2
Scope Scope
Doc ID 14893 Rev 1
DIM DIM
GND GND
VIN- VIN-
VIN+ VIN+
VBOOST VBOOST
6x10 – 75mA 6x10 – 75mA WLEDs ARRAY WLEDs ARRAY
PWM Generator PWM Generator
6V – 32V @ 2A 6V – 32V @ 2A
Power Supply Power Supply
+ +
A-Meter A-Meter
V-Meter V-Meter
Test setup
11/17