Test setup

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8

Test setup

A proper WLED array is required as load to correctly evaluate the LED7706.

Figure 7 shows

a possible assembly of LED7706 with a WLEDs test board. This demonstration board

includes 60 white LEDs (20 mA), switches, jumpers and test points used to easily perform

the functional tests of the LED7706.

Chapter 10 provides a brief description of the test

board and its schematic, which can be used as reference for any customized board.

Figure 7.

LED7706 demonstration board and white LEDs test board assembly

Figure 8 shows the complete test setup.

Figure 8.

LED7706 board test setup

PWM Generator

4.5V – 32V @ 2A

Power Supply

6x10 – 20mA WLEDs

Test Board

VBOOST

VIN+

VIN-

GND

DIM

+

A-Meter

CH2

CH1

Scope

V-Meter

ROW1

PWM Generator

4.5V – 32V @ 2A

Power Supply

6x10 – 20mA WLEDs

Test Board

VBOOST

VIN+

VIN-

GND

DIM

+

A-Meter

CH2

CH1

Scope

V-Meter

ROW1