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Introduction, features, and applications of onsemi NCL30159 LLC converter controller

2/27/2024 9:00:00 AM

Summary: Provides wide dimming range operation over a wide output frequency range up to 750kHz.

onsemi NCL30159 LLC converter controller

onsemi NCL30159 LLC converter controller provides wide dimming range operation over wide output conditions over a frequency range up to 750kHz. The NCL30159 Inductor Capacitor (LLC) is a primary-side current mode controller with high efficiency in standby, open string protection and dedicated start-up. The converter controller provides high-voltage start-up and brown-out detection, which greatly simplifies power supply or LED string driver design. The NCL30159 controller allows maximum power limiting functionality. Analog dimming capability combined with PWM dimming is used to design window LED drivers and control the total luminous flux of the LED string.

The converter controller is available in an SOIC-16 package and integrates a half-bridge output driver with primary current sensing. The
controller is suitable for lighting applications with minimal external components. Typical applications include window (CP) LED drivers, dimmable LED drivers, low-cost high-efficiency LED lighting, electric vehicle battery chargers and television power supplies.


characteristic

  • Integrated high-voltage starting circuit with power overcurrent detection

  • High frequency operation up to 750kHz (from 20kHz)

  • Current Mode Control Scheme

  • Automatic dead zone and maximum dead zone clamp

  • Overcurrent and open string protection

  • LED string short circuit protection

  • Proprietary no-load operation skips cycles

  • Dedicated soft-start sequence to avoid hard handovers

  • Pb-free equipment


specification

  • 50mV low-side drive voltage drop

  • Output source short circuit current 0.8A

  • 1.5A output sinks short circuit current

  • 10μA leakage current


app

  • Low-cost and efficient LED lighting (50W ~ 300W)

  • Window (CP) LED driver

  • Dimmable LED driver

  • Electric vehicle battery charger

  • TV power supply

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