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).
|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)|
Forward Phase (Triac)
|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)