Power Integrations new LYTSwitch-6 LED driver IC

     Power Integrations' new LYTSwitch™-6 Series safety isolated LED driver ics add a new option for smart lighting applications. The new IC offers a 65 W flicker-free output, up to 94% efficiency, and standby power as low as 15 mW, while offering configuration options to support two - or single-stage PFCS. The LYTSwitch-6 IC is designed for home and commercial lighting as well as thin ceiling recess light applications, and its fast dynamic response provides excellent cross-adjustment rates for parallel LED string applications, eliminating the need for additional secondary regulator circuits. It is also easy to connect the pulse width modulation (PWM) dimming interface.

     The LYTSwitch-6 IC supports both constant voltage (CV) and constant current (CC) control, enabling lighting manufacturers to choose one solution for different design applications, resulting in production and logistics savings. Advanced thermal reentry protection protects the IC from excessive temperature and provides illumination with temperature rise under any high temperature environment and operating conditions.

     With integrated 650 V or 725 V MOSFETs and secondary FluxLink™ control, the LYTSwitch-6 IC provides better than 3% constant voltage and current adjustment accuracy across all input voltages, loads and temperatures without the need for an optocoupler. Thanks to synchronous rectification and quasi-resonant switching, the efficiency of the power conversion stage with flyback topology can exceed 94%, so high power output can be provided without the use of heat sinks. For example, A 35 W(12 V/2.92 A) design using an additional PFC circuit can achieve efficiencies of more than 89%. The standby power of the new device is always less than 15 mW at general-purpose AC input, even with an input voltage detection circuit, which allows the IC to provide self-protection from mains voltage surges and surges.

     Hubie Notohamiprodjo, Product Marketing Director for LED Lighting at Power Integrations, said: "The LYTSwitch-6 IC is suitable for smart lighting applications with multiple outputs. By eliminating the heat sink and optocoupler and significantly reducing the size of the output capacitance by 30 percent, the number of components and the system size of the overall solution are also significantly reduced."