Californian electronics company Power Integrations has added to its LytSwitch-6 family of safety-isolated LED drivers for smart lighting applications.

The LYT6078C IC uses the firm’s PowiGaN gallium nitride (GaN) technology to deliver efficiency and performance benefits. It incorporates a 750V power switch and delivers flicker-free output up to 90W with other members of the family providing up to 110W.

Including both the PFC stage and the LytSwitch-6 LED driver, system efficiency is said to exceed 90%.

Housed in InSop-24 surface-mount packages, the ICs are protected by a thermal fold-back system, which reduces output power to limit device temperature during abnormal conditions, while still providing light output.

The company’s FluxLink communication technology allows secondary-side control without the need for an optocoupler, and provides better than ±3% CV and CC regulation across line, load, temperature and manufacturing. All LytSwitch-6 ICs have fast transient response and support pulse-width-modulation (PWM) dimming.

The performance benefits are covered in the DER-920 design report, which details a two-stage PFC boost plus isolated flyback on a dimmable LED ballast. It employs the LytSwitch-6 Lyt6078C IC and Power Integrations’ HiperPFS-4 PFS7624C PFC controller and provides peak efficiency above 91% when driving a 48V LED string at 1350mA from a 220 to 277V AC input. In standby mode, system power consumption is less than 80mW, which provides engineers with flexibility when designing lighting controls and particularly dim-to-off circuits.

“Power Integrations’ new PowiGaN-based LytSwitch-6 ICs save lighting manufacturers space and system costs for smart lighting power supplies,” said Hubie Notohamiprodjo, PI’s director of product marketing for LED lighting. “The company’s key design goals for our latest design report were high power factor, low harmonic content, high efficiency, and three-in-one dimming with zero-to-100% output current. The new Lyt6078C driver IC combined with our HiperPFS-4 PFC controller easily met these challenges.”

The ICs are available now, priced at $2.52 in 10,000 quantities.

Power Integrations develops semiconductor technologies for high-voltage power conversion. The company’s products are building blocks in the clean-power ecosystem, enabling the generation of renewable energy as well as the efficient transmission and consumption of power in applications from milliwatts to megawatts.