Home »  Single-stage Flyback Controller IC for Battery Charging Applications Offers Scalable and Hassle-free Power Designs

 Single-stage Flyback Controller IC for Battery Charging Applications Offers Scalable and Hassle-free Power Designs

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ICC80QSG Single-stage Flyback Controller IC

Infineon Technologies AG has extended its offering of AC-DC controller ICs by introducing the new ICC80QSG single-stage PWM controller for flyback topologies. This new battery charging IC offers a quasi-resonant mode, switching in valley n (QRMn), and is tailored for battery charger applications offering scalable power designs of up to 130 W – when optimized using CoolMOS™ P7 Superjunction (SJ) MOSFETs. Moreover, it is also suitable for adapters, printers, PC, TV, monitor, set-top box, and audio amplifier applications.

The QRM operation of this IC comes with continuous conduction mode (CCM) prevention and valley switching discontinuous conduction mode (DCM) in mid to light load. By pairing this IC with CoolMOS™ P7 MOSFET devices, high efficiency and low electromagnetic interference (EMI) can be achieved to enable savings on the overall BOM.  It features a reduced gate driver output voltage during burst mode, making it ideally suited for very low standby requirements under light load or no load conditions with a remarkable standby performance over the whole operating range.

The ICC80QSG IC implements a secondary-side regulation (SSR) method, which is ideal for current control during battery charging. For higher design flexibility, it accommodates adjustable on-time mapping at the valley changing position for the desired maximum operating switching frequency, as well as adjustable maximum on-time that limits input power and current, allowing safe operation under low line conditions. 

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