Chip-integrated power management solutions are a must for ultra-low
power systems. This enables not only the optimization of innovative
sensor applications. It is also essential for integration and
miniaturization of energy harvesting supply strategies of portable and
autonomous monitoring systems.
The book particularly addresses interfaces for energy harvesting, which
are the key element to connect micro transducers to energy storage
elements. Main features of the book are:
- A comprehensive technology and application review, basics on
transducer mechanics, fundamental circuit and control design,
prototyping and testing, up to sensor system supply and applications.
- Novel interfacing concepts - including active rectifiers, MPPT
methods for efficient tracking of DC as well as AC sources, and a
fully-integrated charge pump for efficient maximum AC power tracking at
sub-100µW ultra-low power levels. The chips achieve one of widest
presented operational voltage range in standard CMOS technology: 0.44V
to over 4.1V.
- Two special chapters on analog circuit design - it studies benefits
and obstacles on implemented chip prototypes with three goals: ultra-
low power, wide supply voltage range, and integration with standard
technologies. Alternative design approaches are pursued using bulk-input
transistor stages in forward-bias operation for amplifiers, modulators,
and references.
- Comprehensive Appendix - with additional fundamental analysis, design
and scaling guidelines, circuit implementation tables and dimensions,
schematics, source code listings, bill of material, etc.
The discussed prototypes and given design guidelines are tested with
real vibration transducer devices. The intended readership is graduate
students in advanced courses, academics and lecturers, R&D engineers.
