Power Integrations introduces its InnoSwitch3-Pro family of configurable off-line CV/CC and CP flyback switching ICs. Capable of delivering up to 65 W and achieving up to 94% efficiency under line-and-load conditions, the new devices enable precise and dynamically adjustable voltage control (10 mV steps) and current control (50 mA steps) via a simple I²C interfacecable.The devices can be paired with a microcontroller or take inputs from the system CPU to control and monitor the offline power supply. Applications include virtually any fast-charging protocol, including USB Power Delivery (PD) 3.0 + PPS, Quick Charge™ 4/4 +, AFC, VOOC, SCP, FCP, and other industrial and consumer battery chargers, dimmable LED ballast controllers, and field-configurable industrial power supplies.
The InnoSwitch3-Pro power conversion integrated circuits include microprocessor-controlled VCC power, eliminating the need for an external LDO to power the microcontroller. An n-channel FET driver is also included, which can be used to enable or disable the main power output. Combined with integrated bus voltage, current, and fault reporting telemetry, and dynamically configurable protection features such as OTP, OV/UV line, OV/UV output, and short circuit protection, the BOM for a sophisticated offline power supply is significantly reduced, and design complexity is dramatically simplified.
Comments from Shyam Dujari, Director of Product Marketing for Power Integrations: "The AC-DC power conversion market is undergoing a rapid transition, with system designers needing a programmable solution that can adapt to various fast-charging protocols, including the USB PD 3.0 + PPS specification." He added, "The ability to precisely control the output voltage and current of a power supply over a wide range is also useful for designers of specialized applications with smaller production runs, as they can easily configure a single-board design for multiple product SKUs using software during manufacturing or installation."
The new InnoSwitch3-Pro ICs employ Power Integrations' high-speed digital communications technology, FluxLink™, along with synchronous rectification, quasi-resonant switching, and precise secondary feedback detection and control circuitry. The devices are CQC certified, UL listed, and TUV approved (EN60950) to overcome the insulation barrier. The products' InSOP™-24D package also provides a thermally efficient, low-profile solution with extended leakage (>11.5 mm) and spacing between the primary and secondary sides for high reliability, surge protection, and ESD robustness.
The InnoSwitch3-Pro integrated circuits focus on fast-charging protocols for applications such as smartphones, laptops, tablets, smart speakers, and non-load applications requiring a configurable or load-controlled output. Samples are available now, priced at $1.12, in quantities of 10,000. Technical support for the InnoSwitch3-Pro integrated circuits is available on the Power Integrations website.
