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S3F84A5
Samsung S3F84A5 Manuals
Manuals and User Guides for Samsung S3F84A5. We have
1
Samsung S3F84A5 manual available for free PDF download: Application Note
Samsung S3F84A5 Application Note (17 pages)
An LED Lighting System
Brand:
Samsung
| Category:
Computer Hardware
| Size: 0.31 MB
Table of Contents
Revision History
3
Table of Contents
4
1 Overview of HPLED Lighting Control System
7
Pin Assignment in S3F84P4
7
Figure 1-1 S3F84P4 Pin Assignment
7
Key Features of S3F84P4
8
System Principle
8
Buck Circuit
9
Summary
9
Figure 1-2 Simplified Buck Circuit
9
Figure 1-3 Current on Load
9
Constant Current Control
10
Figure 1-4 HKP-D1W1 Forward Voltage, Forward Current, and Relative Luminous Flux
10
2 Hardware Implementation
11
System Diagram and Circuit
11
Figure 2-1 Control Circuit
11
Components Selection
12
Select the Inductance (L1) for the Requirement of Current Ripple
12
Select the Capacitance (C2) for the Requirement of Voltage Ripple
12
3 Software Implementation
13
Figure 3-1 Software Implementation Diagram
13
Figure 3-2 Way to Change PWM Duty Cycle
14
4 System Validation
15
Figure 4-1 Waveform for HPLED Forward Voltage and Current
15
5 Appendix
17
BOM List of Key Circuit
17
Appendix 2: Source Code
17
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