A fully integrated AC-DC power converter that faces a mains voltage of 120 V RMS , 60 Hz is presented. The converter achieves an increased operating range and efficiency due to a switching capacitor which relies on the principles of charge redistribution and the memory effect. As such, the converter mimics a variable voltage division to bridge the voltage gap between the high mains and low DC-output. Customized ACswitches and a high-voltage capacitor ensure the high voltage capability. The AC-DC power converter is designed in a 0.35 µm-CMOS technology and achieves an output power of 15.16 µW at peak efficiency of 80.7 % on an active area of 9.8 mm 2 .

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The integration level of electronic systems has continually increased over the past years, leading to significant reductions in cost, size and power consumption of consumer applications. One block, however, is still mostly implemented using discrete components: the Power Management Unit. This paper analyses the benefits of monolithic power management together with the main bottlenecks, and demonstrates how the latest research efforts in system-and circuit-level techniques pave the way for their widespread use.

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