NXQ1TXA5 Datasheet | NXP Semiconductors

description The NXQ1TXA5 is a controller/driver IC for a 5 V Qi-certified/pliant low-power wireless charger. It offers a fully integrated solution that includes a 5 V full-bridge power) stage, as defined in Wireless Power Consortium (WPC) 5 V Qi standards A5, A11, A12 and A16. The NXQ1TXA5 uses dedicated analog ping circuitry to detect devices, according to the Qi standard, achieving extremely low standby power consumption. If a Qi-pliant receiver is detected, the NXQ1TXA5 starts to municate with it. If the receiver is recognized, it safely initiates wireless power transfer from the transmitter to the receiver, while monitoring for fault conditions such as overheating or interference from metal objects. The device is optimized to operate from a USB power supply and uses Smart Power Limiting (SPL) to adjust the output power automatically to pensate for power-limited supplies. The device supports Foreign Object Detection (FOD). LED outputs and a buzzer output are available for the user interface. The LED outputs feature a number of blinking modes. Static Power Reduction (SPR) allows multiple NXQ1TXA5-based transmitters to operate from a single USB power supply by limiting power consumption per device. The NXQ1TXA5 is available in a 5 mm  5 mm, 32-pin HVQFN package. 2. Features and benefits - One-chip WPC 1.1.2 Qi-pliant device for A5/A11/A12/A16 5 V single-coil low-power transmitter - Operates from 5 V supply - Integrated high-efficiency full-bridge power stage with low EMI radiation meeting EN55022 radiated and conducted emission limits - Very few external ponents required, minimizing cost and board space - Extremely low-power receiver detection circuitry; standby power 10 m W (typical) - Power stage fully protected against overcurrents and overtemperature - Fully integrated accurate coil current measurement - Demodulates and decodes munication packages from Qi-pliant receivers - PID regulation for closed-loop power drive and control - Internal 1.8 V digital supply...