Modern laptop adapters require higher efficiency, ultra-low standby power, and a smaller footprint, pushing legacy power architectures to their limits in balancing no-load consumption and strict energy targets.
Injoinic is tackling this challenge head-on with its new QR flyback PD 65W power supply solution. Driven by a trio of chips—the IP2017 multi-mode flyback controller, IP2028 synchronous rectification controller, and IP2766G fast-charge protocol controller—this design pushes up to 20V/3.25A (5V–20V wide range). The three chips work in perfect synergy, achieving a no-load standby draw of under 5mW at 230VAC and easily meeting Level VII energy efficiency benchmarks. It’s the ultimate cost-effective, plug-and-play reference design for high-power fast chargers.
The Injoinic chipset shines in efficiency, ripple control, and component integration. Thanks to the highly configurable multi-mode operation and precise timing of the IP2017, alongside the ultra-low quiescent current of the IP2766G, the adapter draws less than 0.28W at a light load of 20V/0.15W.
Full-load ripple is kept under 200mV (dropping to a mere 70mV at 230V/50Hz), ensuring clean power and rock-solid EMI performance. Under the hood, the IP2017 packs a 700V high-voltage startup and X-cap discharge, seamlessly transitioning between low-side CCM and high-side QR modes.
On the secondary side, the IP2028 handles up to 120V sensing tolerance with a volt-second anti-shoot-through mechanism, protecting the SR MOSFET from false triggers and voltage spikes.
Meanwhile, the IP2766G protocol IC supports PD3.0, PPS, QC, and SCP, using an integrated Charge Pump to directly drive an N-MOS while offering internal loop compensation. This slashes external BOM counts, shrinking the final PCBA down to just 72.2mm × 38.7mm × 25mm.
Injoinic’s PD 65W reference design completely redefines the boundaries of power density and ultra-low power consumption. By integrating primary control, secondary synchronous rectification, and protocol decoding, it gives engineers the tools to hit "zero standby power" and Level VII efficiency across the full voltage spectrum, all while maintaining a remarkably compact profile. As high-power fast charging becomes the baseline, this highly integrated, multi-protocol "three-chip" architecture sets a new standard for consumer electronics and portable adapters, steering the industry toward greener, smarter power delivery.
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