TPS92075 Non-isolated, Phase Dimmable, Buck PFC LED Driver with Digital Reference Control | TI.com

TPS92075
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Non-isolated, Phase Dimmable, Buck PFC LED Driver with Digital Reference Control

 

Description

The TPS92075 is a hybrid power factor controller (PFC) with a built-in phase dimming decoder. The device analyzes line cycles continuously using an internal, low-power, digital controller for shape and symmetry. The power converter stage generates an analog current reference and uses it to regulate the output current. The device uses control algorithms to manipulate the analog reference. These algorithms optimize dimmer compatibility, power factor and total harmonic distortion (THD).

Using a constant off-time control, the solution achieves low component count, high efficiency and inherently provides variation in the switching frequency. This variation creates an emulated spread spectrum effect easing the converters EMI signature and allowing a smaller input filter.

The TPS92075 also includes standard features: current limit, overvoltage protection, thermal shut-down, and VCC undervoltage lockout, all in packages

Features

  • Controlled Reference Derived PFC
  • Integrated Digital Phase-Angle Decoder
  • Digital 50/60 Hz Synchronization
  • Phase-Symmetry Balancing
  • Constant LED current operation
  • Fast Start-up
  • Dimming Implemented Via Analog Reference Control
  • Smooth Dimming Transitions
  • Overvoltage Protection
  • Feedback Short-Circuit Protection
  • Leading and Trailing Edge Dimmer Compatibility
  • Low BOM Cost and Small PCB Footprint
  • Patent Pending Digital Architecture
  • Available in 8-Pin SOIC and 6-Pin TSOT

Parametrics

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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) UVLO thresholds on/off (V) Features Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
TPS92075 Order now AC/DC     11     18     2     9     120     1     Buck
Buck-Boost    
Analog
Forward Phase (Triac)
PWM
Reverse Phase    
Active     Inductive     50     300     1.3     0.5     9.8 / 6.4     Adjustable Switch Frequency
Soft Start
Thermal Shutdown    
-40 to 125     SOIC | 8
SOT-23-THIN | 6    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
6SOT-23-THIN: 5 mm2: 1.6 x 2.9 (SOT-23-THIN | 6)    
LM3447 Order now AC/DC     7.5     17.5     2     9     60     1     Flyback     Forward Phase (Triac)
Reverse Phase    
Active     Inductive     60     120     1.6     1     10.5 / 7.5     Adjustable Switch Frequency
Soft Switching
Thermal Shutdown    
-40 to 125     TSSOP | 14     14TSSOP: 32 mm2: 6.4 x 5 (TSSOP | 14)    
TPS92074 Order now AC/DC     11     18     2     9     120     1     Buck
Buck-Boost    
Analog
PWM    
Active     Inductive     50     300     1.3     0.5     9.8 / 6.4     Adjustable Switch Frequency
Soft Start
Thermal Shutdown    
-40 to 125     SOIC | 8
SOT-23-THIN | 6    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
6SOT-23-THIN: 5 mm2: 1.6 x 2.9 (SOT-23-THIN | 6)