TPS92411 Floating Switch for Offline AC Linear Direct Drive of LEDs with Low Ripple Current |

TPS92411 (ACTIVE) Floating Switch for Offline AC Linear Direct Drive of LEDs with Low Ripple Current



The TPS92411 is a 100-V floating MOSFET switch for use in offline LED lighting applications. The device is used in conjunction with a current regulator that can achieve a power factor greater than 0.9 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, thus 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 or more is possible. Other features include a UVLO circuit to monitor when the device has sufficient voltage to operate properly and over-voltage protection (TPS92411P).


  • 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 Luminaires up to 70+ W
  • Input Voltage Range: 7.5 V to 100 V
  • Stackable 100 V, 2-Ω MOSFET Building Block
  • Controlled Switch Open and Close Transitions Minimize EMI
  • Designed for use with the TPS92410 or with a Discrete
    Linear Regulator
  • Input Undervoltage Protection
  • Output Overvoltage Protection (TPS92411P)
  • Low IQ: 200 µA (typ)


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Part number Order Input voltage (type) Vin (Min) (V) Vin (Max) (V) Iout (Max) (A) Vout (Min) (V) Vout (Max) (V) Regulated outputs (#) Topology Dimming method Power factor correction (Min) Type Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Vref (V) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
TPS92411 Order now AC Linear     8     94     0.35     9     94     1     AC Direct-Drive
Floating Switch    
Forward Phase (Triac)
Reverse Phase    
Natural     Linear     0     0     0.2     0.21     Soft Switching     Catalog     -40 to 150     SO PowerPAD | 8
SOT-23 | 5    
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)