VIN

RSET

TPS92411

RSNS

DRAIN

VS

VIN

RSET

TPS92411

RSNS

DRAIN

VS

VIN

RSET

TPS92411

RSNS

DRAIN

VS

±

+

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

1

FEATURES

SIMPLIFIED APPLICATION DIAGRAM

•

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)

•

APPLICATIONS

•

LED Lamps and Light Bulbs

•

LED Luminaires

•

Downlights

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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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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.