Power Integrations has launched the InnoSwitch 4-CZ family of high frequency, zero voltage switching (ZVS) flyback switcher ICs.
InnoSwitch4-CZ devices incorporate a robust 750 V primary switch using Power Integrations’ PowiGaN technology and a novel high-frequency active clamp flyback controller to facilitate a new class of ultra-compact chargers suitable for phones, tablets, and laptops.
Balu Balakrishnan, CEO of Power Integrations said: “The introduction of the InnoSwitch4-CZ family of ICs marks a significant milestone for GaN technology. PowiGaN switches, in conjunction with our active clamp solution – ClampZero, enable a highly efficient design and an extremely compact form-factor. We’re pleased to have worked closely with the Anker team to bring this new class of mobile chargers to market.”
Steven Yang, CEO at Anker added: “We are excited to work with Power Integrations as their exclusive launch partners for their InnoSwitch4 chipsets. The InnoSwitch4-CZ was a natural choice for Anker’s new Nano II series of USB-C chargers. Its outstanding levels of integration and efficiency are key to the Nano II series’ extremely compact design.”
The first consumer devices based on InnoSwitch4-CZ devices were introduced earlier today by Anker, the global charging expert for mobile devices, through a YouTube Live event.
The InnoSwitch4-CZ family incorporates 750 V switch, primary and secondary controllers, ClampZero interface, synchronous rectification, and safety-rated feedback in a single, compact InSOP-24D package. A steady-state switching frequency of up to 140 kHz minimizes transformer size, further increasing power density.
In contrast with older active clamp flyback approaches, the InnoSwitch4-CZ and ClampZero combination provides up to 95% efficiency and maintains very high efficiency across variations in line voltage, system load and output voltage.
The new flyback switcher ICs enable exceptional CV/CC accuracy, independent of external components, and consume less than 30 mW no-load including line-sensing safety and protection features.
Targeting high-efficiency compact USB PD adapters, high-density flyback designs up to 110 W and high-efficiency CV/CC power supplies, InnoSwitch4-CZ ICs provide variable output voltage and constant current profiles.
Devices are fully protected featuring auto-restart or latching fault response for output over-voltage and under-voltage protection, multiple output under-voltage fault thresholds and latching or hysteretic primary over-temperature protection.