Freescale's Watt Saver technology found a design win in AT&T's Zero Charger for cell phones.
Vampire power—the standby milliwatts that device chargers continue to draw even when the device battery is fully charged or no device is connected to the charger—wastes resources and costs consumers billions annually worldwide. For its Watt Saver technology, Freescale combined a microcontroller with firmware to monitor power usage and a relay to cut power to the charger completely when it is not needed. AT&T already uses the technology in its Zero Charger for cell phones; now Freescale is pitching Watt Saver to a broader market.
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