Recent ChargerLAB teardowns confirm that CPS has unleashed the CPS8601—a cutting-edge 15W wireless charging transmitter IC. By packing a high-performance 8051 MCU, full-bridge drivers, low-on-resistance power MOSFETs, ASK demodulation, Foreign Object Detection (FOD), and precision ADCs into a single monolithic chip, the CPS8601 redefines integration. Fully compliant with WPC 1.3 EPP 15W as well as Apple and Samsung wireless fast-charging protocols, this IC flattens the control and power delivery architecture. By drastically slashing peripheral component counts, it serves as the ultimate go-to master controller for ultra-compact magnetic chargers, desktop pads, and multi-device wireless docks.
The CPS8601 shines in both processing power and high-frequency power conversion. Supporting a wide 3.3V to 14.3V input range, it embeds an 8051 core clocked dynamically from 8MHz to 48MHz (with 16KB MTP and 40KB ROM), backed by a 144MHz PWM engine to handle complex protocol handshakes and real-time power adjustments. In the power stage, integrated full-bridge drivers and low-on-resistance power MOSFETs (both high and low sides sit in the 17mΩ class) support fine-tuned dead-time control to systematically minimize switching losses. On the data side, it deftly handles both voltage and current-mode ASK demodulation for reliable receiver status tracking and power negotiation. Additionally, the chip features an internal 12-bit multi-channel ADC and an all-around protection matrix (OVP, OCP, OTP, and FOD), plus low-power sleep/standby modes. It has already proven its metattle in premium retail hardware, driving the low-power charging channel in devices like the Belkin 20W Qi2 2-in-1 Magnetic Wireless Charger (WIZ021).
By fusing transmitter control, full-bridge inversion, and ASK demodulation into a single-chip solution, the CPS8601 delivers a highly integrated, cost-effective golden ticket for the 15W magnetic wireless charging and portable accessory market. It eliminates the engineering headache of shoehorning discrete drivers and FETs into cramped enclosures, all while boosting efficiency and FOD safety. As these highly integrated wireless transmitter SoCs become the industry norm, the consumer wireless power ecosystem is primed to leap forward into an era of higher power densities and ultimate miniaturization.
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