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| Texas Instruments TPS92561 |
TPS92561 – Phase Dimmable, Single Stage Boost Controller for LED Lighting
FEATURES (คุณสมบัติ)
• Simple Hysteretic Control
• Compact Solution and Simple Bill Of Materials
• Naturally Dimmable TRIAC and Reverse Phase Dimmers
• Implements LED Drive Circuits Capable of High >90% Efficiency, >0.9 Power Factor, and <20% THD
• Programmable Output Over-voltage Protection
• Overtemperature Shutdown
• VCC Undervoltage Lockout
• 8-Pin VSSOP (MSOP) With Exposed Pad
APPLICATIONS (การประยุกต์ใช้งาน)
• Off-Line TRIAC Dimmable Applications
• Off-Line Non-Dimmable Lamps
• Lamps Requiring the Highest Efficiency and Lowest BOM Cost
• Industrial and Commercial Solid State Lighting
DESCRIPTION (รายละเอียด)
The TPS92561 device is a boost controller for LED
lighting applications utilizing high-voltage, low-current LEDs. A boost converter approach to lighting
applications allows the creation of the smallest volume converter possible and enables high
efficiencies beyond 90%. The device incorporates a current sense comparator with a fixed offset enabling a simple hysteretic control scheme free of the loop compensation issues typically associated with a boost converter. The integrated OVP and VCC regulator
further simplify the design procedure and reduce external component count.
Diagram TPS92561 (ภาพตัวอย่าง)
Application circuit TPS92561 (วงจรการประยุกต์ใช้)
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