GreenChip Resonant Controller Delivers High Efficiency for LED Applications up to 400 W

NXP Semiconductors N.V. announced the availability of the SSL4120 — a GreenChip™ resonant half-bridge controller with integrated power factor correction (PFC) for high-power LED applications up to 400 W. The single-chip SSL4120 is a high-efficiency solution for high-power LED applications such as office lighting, shop lighting, high-bay and low-bay lighting, parking garage lighting, area lighting and street lighting.

Offering true universal mains operation, the SSL4120 enables efficient direct start-up from rectified mains ranging from 90 to 305 volts. The SSL4120 enables low total harmonic distortion (THD) of less than 10 percent, a high power factor (PF) over 0.97, and a typical PFC frequency of 380 kHz to meet and exceed legal requirements for high-power LED lighting applications. NXP will showcase the latest additions to the GreenChip family of SSL driver ICs at Hong Kong International Lighting Fair (booth 5B-C12).

“Both outdoors and indoors, demand for high-power LED solutions is growing strong in commercial, industrial and street lighting applications worldwide. By integrating controllers for power factor correction and a half-bridge resonant converter in a single chip, the SSL4120 offers an elegant, cost-effective solution in designing high-efficiency LED drivers and power supplies for this market,” said Ryan Zahn, general manager, lighting solutions product line, NXP Semiconductors.

Key Features

* Single chip with integrated controllers for PFC and half-bridge resonant converter (HBC)

* Designed for high-power LED applications from 75 to 400 W

* True universal mains operation from 90 to 305 V

* Low THD (<10%) and high PF (>0.97)

* Resonant topology and valley/zero voltage switching enable high efficiency (>93%)

* Typical PFC frequency of 380 kHz enables compliance with regulatory requirements for THD

* Compact form factor enables cost-effective designs with a minimal external components

* PFC in boundary-mode operation with on-time control

* HBC burst mode switching

* All-around protection, including OverCurrent Protection (OCP), OverVoltage Protection (OVP), demagnetization sensing, open-loop protection, capacitive mode protection, and a general-purpose latched protection input, enables safe operation under severe practical conditions


The SSL4120 resonant controller, the latest high-power LED driver IC from NXP, is now in volume production with product samples available immediately. Other GreenChip solutions for high-power LEDs include the award-winning SSL4101 — a flyback controller with integrated PFC, covering a power range of 25 to 150 W.

NXP Semiconductors N.V.
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