The NXQ1TXH5 is a fully integrated one-chip controller and driver IC enabling the design
of a 5 V Qi-certified low-power wireless charger. It includes a 5 V full-bridge power
stage, as defined in the Wireless Power Consortium (WPC) low power Qi configurations A5,
A11, A12 and A16. The device is optimized for minimum external component count, enabling
a very low cost application and a simple PCB design.
The NXQ1TXH5 uses dedicated analog ping circuitry to detect devices, according to the Qi
standard, achieving an extremely low standby power consumption of 10 mW. The NXQ1TXH5
takes care of a reliable ASK communication and controls the wireless power transfer from
the transmitter to the receiver, while monitoring for fault conditions such as
overheating or interference by 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 compensate for power-limited supplies. The device supports Foreign
Object Detection (FOD), and operates according to the WPC Qi low power V1.2
LED and buzzer outputs are available for the user interface. For the LED outputs a wide range
of blinking modes can be selected in the application. Static Power Reduction (SPR)
allows multiple NXQ1TXH5-based transmitters to operate from a single USB power supply by
limiting power consumption per device.
The NXQ1TXH5 comes in a size optimized low cost 5 mm × 5 mm, 32-pin HVQFN package.