Infineon Launches Single-Stage Flyback Controller for Battery Charging Applications
Published2022.10.12 11:28
▲ ICC80QSG battery charging IC (Image provided by Infineon Korea)
Supports power design expandable up to 130W
Burst mode, minimizing power consumption at no-load and light-load
This IC is designed for battery charging applications and, when optimized for use with CoolMOS™ P7 super-junction (SJ) MOSFETs, supports scalable power designs up to 130 W.
It is evaluated as suitable not only for battery charging applications but also for △adapters △printers △PCs △TVs, etc.
The ICC80QSG battery charger IC switches to valley n in quasi-resonant mode (QRMn).
In addition to QRM operation, it prevents continuous conduction mode (CCM) under medium and light loads and operates in valley switching discontinuous conduction mode (DCM).
Pairing the ICC80QSG with CoolMOSTM P7 MOSFETs can achieve higher efficiency, lower EMI, and require fewer heatsinks and coils in flyback designs, reducing the overall BOM.
Burst mode is supported to lower the driver output voltage to minimize power consumption under no-load or light load conditions.
<br /> The ICC80QSG implements the secondary side regulation (SSR) technique, making it suitable for current control during battery charging.
As a design flexibility, the on-time can be mapped from the valley transition point to the desired maximum operating switching frequency, and the maximum on-time is adjustable to limit the input power and current for safe operation.
Strict brown-in/brown-out hysteresis was used, as the brown-in and brown-out hysteresis is externally configurable.
This protects the primary MOSFET from overheating during low input voltages, even when using a smaller heatsink.
Additionally, it includes comprehensive protection features to facilitate the design of safe and robust AC-DC battery chargers for a variety of applications.
The ICC80QSG battery charger IC is available in a PG-DSO-8 package and is available now.
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