TPS92411 Datasheet, PDF (1/22 Pages) Texas Instruments – Floating Switch for Offline AC Linear Direct Drive of LEDs with Low Ripple Current

TPS92411, TPS92411P
www.ti.com
SLUSBQ6 – OCTOBER 2013
Floating Switch for Offline AC Linear Direct Drive of LEDs with Low Ripple Current
Check for Samples: TPS92411, TPS92411P
FEATURES
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• High-Performance Solution for Driving LEDs
from AC Mains
• Simplifies Design of Phase Dimmable LED
Driver with High Power Factor, Low Total
Harmonic Distortion, and Low Current Ripple
• Suitable for LED Lamp and Luminaires up to
70 W
• Input Voltage Range: 7.5 V to 100 V
• Stackable 100V, 2-Ω MOSFET Building Block
• Up to 350 mA Current Capability (PSOP
package)
• Controlled Switch Open and Close Transitions
Minimize EMI
• Input Undervoltage Protection
• Output Overvoltage Protection (TPS92411P)
• Low I_Q: 200 µA (typ)
APPLICATIONS
• LED Lamps and Light Bulbs
• LED Luminaires
• Downlights
SIMPLIFIED APPLICATION DIAGRAM
120 VRMS
±
+
VIN
DRAIN
TPS92411
RSET
RSNS
VS
VIN
DRAIN
TPS92411
RSET
RSNS
VS
VIN
DRAIN
TPS92411
RSET
RSNS
VS
DESCRIPTION
The TPS92411 is a 100-V floating MOSFET switch
for use in offline LED lighting applications. It is used
in conjunction with a current regulator that can
achieve greater than 0.9 power factor to create a LED
drive solution with low-ripple current. When properly
designed, solution performance is comparable to
traditional flyback, buck or boost based AC/DC LED
drivers. The approach requires no inductive
components saving size and cost. Slew controlled low
frequency operation of the TPS92411 switches
creates very little EMI. Detailed operation is described
in the APPLICATION INFORMATION section.
Package options include SOT23-5 and PSOP-8
allowing the user to optimize for small size or scale
for high power. Using the PSOP-8 package, design of
LED luminaires up to 70 W is possible. Other features
include a UVLO circuit to monitor when the device
has sufficient voltage to operate properly and over-
voltage protection (TPS92411P).
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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, Texas Instruments Incorporated