Test Procedure for the NCS29001DGEVB Evaluation Board 1. Board Setup: IC input voltage 8.5V to 18V Inductor input voltage 24V LED current 200 mA (BE SURE LED CURRENT DOES NOT EXCEED 200 mA!) Switching frequency 200kHz LED string 76V total forward voltage 2. Power Supply: Refer to diagram above for proper connections to board. Plug in the GND first. Connect output load Connect IC input voltage Connect Inductor input voltage Connect function generator Power on 3. Enable Device Through STBY and PWMin: Bring device out of standby by connecting STBY pin to ground Apply PWM signal centered at 1.65 V with 3.30 Vpk-pk to PWMin (100Hz to 300Hz) to engage soft-start power up Adjust PWM duty cycle to change LED brightness 3/10/2014 1 www.onsemi.com