Today, both smaller and smaller notebooks, tablets, and larger-sized phones require smaller, faster-charging chargers. However, a flyback converter that can effectively convert AC power to DC power and requires only a few components as the preferred topology limits the size of the charger. The development of the power adapter also reaches a critical point, then the active clamped flyback Can the chipset break the volume limit?
Wu Haoqiang, director of analog products business development for Texas Instruments in Texas, said at a media briefing in Shenzhen: "Smartphones need not only smaller but also more powerful chargers, while active clamp anti-excitation Smaller space releases more power. Specifically, active clamp flyback eliminates switching losses and reduces EMI, with proper control clamps to achieve zero voltage switching (ZVS); secondly, efficiency can be increased by circulating leakage energy and It is passed to the output instead of being dissipated to achieve higher efficiency than conventional flyback converters; finally, higher power density can be achieved with lower switching power consumption, resulting in higher switching frequencies and smaller passive components. TI's new chipset combines the UCC28780 active-clamp flyback controller with the UCC24612 synchronous rectifier controller to operate up to 1MHz, helping to halve the power supply size of AC/DC adapters and USB PD chargers."
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