STMicroelectronics HVLED101 High Power Factor Flyback Controllers

STMicroelectronics HVLED101 High Power Factor Flyback Controllers have enhanced peak current mode controllers. The STMicroelectronics HVLED101 can control mainly high power factor (HPF) flyback or buck-boost topologies having an output power of up to 180W. Some other topologies, like a buck, boost, and SEPIC, could also be implemented. Primary Side Regulation of output voltage and Optocoupler control can be applied independently on the chip, exploiting precise regulation and very low standby power during no-load conditions.

Features

Quasi-Resonant (QR) topology
Primary side regulation of output voltage
Direct optocoupler connection for secondary side regulated loop
High power factor and low THD in universal and extended range (PF> 0.9 and THD < 5% @ full load and < 10% @ 1/3 load)
800V fast high-voltage startup
Extremely low input power at no-load and standby conditions

Integrated input voltage detection for high power factor capability, DC rail detection, and protection triggering
Programmable frequency foldback with valley locking for noise-free operation
Programmable brownout and input overvoltage protection
Latch-free device guarantee by smart Auto Restart Timer (ART)
Input pin for remote protection with NTC management (threshold hysteresis and linearization)

Applications

Single-stage LED drivers with a high power factor of up to 180W
Two-stage LED drivers up to 200W

STMicroelectronics HVLED101 High Power Factor Flyback Controllers

Features

Applications

Block diagram

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