STMicroelectronics HVLED007 Current-Mode PFC Controllers
STMicroelectronics HVLED007 Current-Mode PFC Controllers offer a special circuit (Input Current Shaper) that enables High-PF quasi-resonant flyback converters to draw a theoretically sinusoidal input current from the power line. The STMicroelectronics IC is available with a control input intended for being driven by the phototransistor of an optocoupler to close a secondary-regulated isolated control loop. However, with the addition of a simple external circuitry, it can be used to close a primary-regulated voltage loop as well.
The HVLED007 provides protection features to handle overload, short-circuit, and overvoltage. The totem-pole output stage, capable of 600mA source and 800mA sink current, is suitable for big MOSFET drives. This totem-pole stage, combined with the other features, makes the device an excellent low-cost solution for EN61000-3-2 compliant SMPS up to 100W.
The HVLED007 PFC Controllers are ideal for indoor and outdoor solid-state lighting applications and provide an extended temperature range operation down to -40°C with guaranteed electrical specification.
Features
- Transition-mode (quasi-resonant) control of flyback PFC pre-regulators
- Proprietary input current shaper for minimum THD of line current
- Control input for isolated feedback and optocoupler driving
- Output overvoltage protection
- Overload and short-circuit protection
- Low (≤60μA) start-up current and low (≤4ma) quiescent current
- Digital leading-edge blanking on current sense
- -600/+800mA totem pole gate driver with UVLO pull-down and voltage clamp
- SO8 package
Applications
- Flyback PFC converters
- AC-DC LED drivers for domestic, commercial, and industrial lighting
- Street lighting
- EN61000-3-2 compliant SMPS
Evaluation Board
STMicroelectronics EVLHVLED007W35F Evaluation Board
Configured to evaluate the operation of the HVLED007, a current-mode PFC controller.
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