PROJECT TITLE :

DTMOS-Based Pulse Transformer Boost Converter With Complementary Charge Pump for Multisource Energy Harvesting

ABSTRACT:

An energy-harvesting system that accommodates each discrete-time or continuous-time energy sources simultaneously is presented. The core dc–dc converter may be a pulse transformer boost converter using dynamic threshold MOS transistor that self-starts at 36 mV-input voltage and generates bipolar output voltages up to ±a pair of.five V. Employing the dynamic body bias technique to the boost converter power transistor improves power potency at sub-300-mV input voltages up to 2 times over the identical transistor in a very standard configuration. At massive harvested power, the supply-to-body diode of the facility transistor functions as an input voltage limiter. Dynamic threshold MOSFET (DTMOS) additionally increases transistor saturation current and output power compared to conventional transistors at similar input voltage. Instead of using a linear shunt regulator, excess power is dissipated by internal loss of a bipolar-clocked cross-coupled charge pump. An on-chip voltage-controlled oscillator, that generates clock frequency in proportion to the harvested power, and a unipolar-to-bipolar level shifter are included to drive the charge pump designed. The circuit prototypes are fabricated by using the UMC zero.13- $mumboxm$ CMOS method with the triple-well choice.