Can be used for battery charging applications and easily scalable design

Battery powered appliances are one of the fastest growing market segments in the industry. Such applications require energy-saving, robust and cost-effective battery charging solutions. In order to meet this demand, Infineon Technology Co., Ltd. (FSE code: IFX/OTCQX code: IFNNY) introduced ICC80QSG single-stage pulse width modulation (PWM) controller for flyback topology, further expanding the product array of Infineon's AC-DC controller IC. This IC is specially tailored for battery charging applications, and is compatible with CoolMOS ™ P7 super junction (SJ) MOSFET is used together to achieve a scalable power design with output power up to 130 W. This product is also suitable for adapter, printer, PC, TV, monitor, set-top box, audio amplifier and other applications.

ICC80QSG battery charging IC supports quasi resonant mode multi valley switch (QRMn). In addition to the quasi resonant mode (QRM), it can also prevent entering the continuous conduction mode (CCM) and realizing the intermittent conduction mode (DCM) of valley switch under medium and light load. ICC80QSG and CoolMOS ™ P7 MOSFET devices can be used together to improve energy efficiency and reduce electromagnetic interference (EMI). Moreover, because the flyback design requires fewer heat sinks and coils, the BOM cost is also saved. In addition, a burst mode is integrated for light load conditions, which helps to achieve extremely low power consumption in standby mode. The ICC80QSG can reduce the output voltage of the low gate drive chip in the burst mode, which can meet the requirements of extremely low standby loss under light load or no load conditions, so as to play an excellent standby performance in the entire working range.

ICC80QSG adopts the secondary side regulation (SSR) control mode, which is an ideal scheme for current controlled battery charging. In order to obtain higher design flexibility, it provides an adjustable turn-on time comparison table corresponding to the valley bottom switch position at a given maximum operating frequency, and an adjustable maximum turn-on time used to limit the input power and current so that it can operate safely under low-voltage line conditions. The IC provides protection for primary MOSFETs with external adjustable hysteresis overvoltage protection and undervoltage protection. It will not overheat even if less radiators are used under the input undervoltage condition. With comprehensive protection functions, ICC80QSG can realize simple, safe and powerful AC-DC battery charger design for many applications.

Supply

ICC80QSG battery charging IC packaged with PG-DSO-8 is now available.