Power Integrations, a high-voltage integrated circuit manufacturer dedicated to energy-efficient power conversion, yesterday announced the InnoSwitch3-Pro series of off-line flyback switching power ICs that can set constant voltage/constant current and constant power output characteristics. The new device delivers 65 W of output power and delivers 94% efficiency over a wide range of input voltages and loads. In addition, accurate dynamic step control of the output voltage and current is possible through a simple two-wire I2C interface (voltage step size of 10 mV and current step size of 50 mA). The new device works with the microcontroller and can control and monitor the off-line power supply according to the instructions of the system CPU. Applications cover almost all fast-charge protocols, including USB Power Transfer (PD) 3.0 + PPS, Quick Charge 4/4+, AFC, VOOC, SCP, FCP, and other industrial and consumer battery chargers, dimmable LEDs. Ballast driver and output adjustable industrial power supply.
The InnoSwitch3-Pro power conversion IC integrates a microprocessor VCC supply, eliminating the need for a new peripheral LDO to power the external microprocessor; it also integrates an n-channel MOSFET driver circuit that can be used to enable or disable the main power output of the power supply. The new device integrates telemetry technology for bus voltage, current and fault reporting, as well as dynamically settable protection functions such as over-temperature protection (OTP) for externally settable power supply, input overvoltage/undervoltage (OV/) UV) protection, output overvoltage/undervoltage (OV/UV) protection and short-circuit protection, resulting in a significant reduction in the number of BOM components for complex off-line power supplies and greatly reduced power supply design complexity.
Shyam Dujari, Director of Product Marketing at Power Integrations, said: "The AC-DC power conversion market is undergoing a rapid transition, and system designers need a programmable switching power supply solution that can accommodate a variety of fast-charge protocols, including recent Developed the completed USB PD 3.0 + PPS specification." He further pointed out that "the ability to accurately control the output voltage and current of the power supply in different application environments is also very useful for designers who need professional applications in small batch production because they can use The software easily configures output specifications during production or during installation to meet the power needs of different applications."
The new InnoSwitch3-Pro IC features Power Integrations' high-speed digital communications technology, FluxLinkTM, with synchronous rectification, quasi-resonant switching, and accurate secondary side feedback detection and control circuitry. The new device is CQC, UL and TUV (EN60950) certified and can be safely bridged between the primary and secondary safety barriers of the power supply. Its InSOP® 24D package also offers a thin solution for efficient heat dissipation with a wider creepage distance (>11.5 mm) and clearance on the primary and secondary sides for greater reliability, surge immunity and ESD capability .
The InnoSwitch3-Pro IC supports fast charging protocols for a wide range of applications, such as smartphones, laptops, tablets, smart speakers, and non-charging applications that require output controlled by load or adjustable output. Device samples are now available for ordering, priced at $1.12 per unit based on 10,000-piece quantities.
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