Rev. P05
4
VPN12AD02-FU EVB GUIDE
QUICK START GUIDE:
Power on/off
1.
Connect 3~4 LEDs from VOUT to GND if jumper JR25 is short, Connect 5~8 LEDs from VOUT
to GND if jumper is open.
2.
Short the jumper JR16 and JR18
3.
Give Power from VIN to GND (without EMI solution), from EMIIN to EMIG (with EMI solution)
4.
Open the Disable jumper to enable VPN12AD02-FU
5.
Short the Disable jumper to disable VPN12AD02-FU
Digital and analog dimming
1.
For digital dimming, open JR18 and give the PWM signal to PWMI pin.
2.
For analog dimming, open JR16 and give the analog signal to SET pin.
Frequency Spread Spectrum
1.
Add R11=10kohm to enable Frequency Spread Spectrum.
2.
Remove R11 to disable Frequency Spread Spectrum.
Input Power
Output Load
JR25
JR16
JR18
Figure 3: Quick Start Guide for Constant Current Application
