NCS29001DGEVB_TEST_PROCEDURE - 96 KB

Test Procedure for the NCS29001DGEVB Evaluation Board
1.
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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.
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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
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