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List of Figures
Figure Title Page
Number Number
Figure 1-1 S3F84P4 Pin Assignment.....................................................................................................................7
Figure 1-2 Simplified Buck Circuit..........................................................................................................................9
Figure 1-3 Current on load .....................................................................................................................................9
Figure 1-4 HKP-D1W1 Forward Voltage, Forward Current, and Relative Luminous Flux...................................10
Figure 2-1 Control Circuit .....................................................................................................................................11
Figure 3-1 Software Implementation Diagram .....................................................................................................13
Figure 3-2 Way to change PWM duty cycle.........................................................................................................14
Figure 4-1 Waveform for HPLED forward voltage and current ............................................................................15