TPS92561 Datasheet, PDF (1/24 Pages) Texas Instruments – Phase Dimmable, Single Stage Boost Controller for LED Lighting

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TPS92561
SLVSCD1B – DECEMBER 2013 – REVISED JANUARY 2014
TPS92561 – Phase Dimmable, Single Stage Boost Controller for LED Lighting
FEATURES
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•2 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
• 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
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.
LED+
TPS92561
GATE VP
SRC OVP
VCC ADJ
SEN GND
LED+
EMI
Filter
Figure 1. Typical Application Schematic
(opt) TRIAC
Dimmer
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013–2014, Texas Instruments Incorporated