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Ultra-small (less than 2cm2 single layer PCB) Qi low power wireless charger transmitter design, based on NXP®s NXQ1TXA5 true-single chip transmitter. The NXQ1TXA5 has only 2mW (!!!) standby power consumption, meeting IEC 62301 ZERO STANDBY POWER criteria, while performing Qi compliant analog ping. It needs less than 10 external components to build a complete wireless charger.