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This book explores integrated gate drivers with emphasis on new
gallium nitride (GaN) power transistors, which offer fast switching
along with minimum switching losses. It serves as a comprehensive,
all-in-one source for gate driver IC design, written in handbook
style with systematic guidelines. The authors cover the full range
from fundamentals to implementation details including topics like
power stages, various kinds of gate drivers (resonant,
non-resonant, current-source, voltage-source), gate drive schemes,
driver supply, gate loop, gate driver power efficiency and
comparison silicon versus GaN transistors. Solutions are presented
on the system and circuit level for highly integrated gate drivers.
Coverage includes miniaturization by higher integration of
subfunctions onto the IC (buffer capacitors), as well as more
efficient switching by a multi-level approach, which also improves
robustness in case of extremely fast switching transitions. The
discussion also includes a concept for robust operation in the
highly relevant case that the gate driver is placed in distance to
the power transistor. All results are widely applicable to achieve
highly compact, energy efficient, and cost-effective power
electronics solutions.
This book explores integrated gate drivers with emphasis on new
gallium nitride (GaN) power transistors, which offer fast switching
along with minimum switching losses. It serves as a comprehensive,
all-in-one source for gate driver IC design, written in handbook
style with systematic guidelines. The authors cover the full range
from fundamentals to implementation details including topics like
power stages, various kinds of gate drivers (resonant,
non-resonant, current-source, voltage-source), gate drive schemes,
driver supply, gate loop, gate driver power efficiency and
comparison silicon versus GaN transistors. Solutions are presented
on the system and circuit level for highly integrated gate drivers.
Coverage includes miniaturization by higher integration of
subfunctions onto the IC (buffer capacitors), as well as more
efficient switching by a multi-level approach, which also improves
robustness in case of extremely fast switching transitions. The
discussion also includes a concept for robust operation in the
highly relevant case that the gate driver is placed in distance to
the power transistor. All results are widely applicable to achieve
highly compact, energy efficient, and cost-effective power
electronics solutions.
This book provides a comprehensive, single-source on resonant
switched-capacitor converters. It is written in the style of a
handbook, with systematic guidelines, and includes implementation
examples. The authors explore integrated hybrid resonant DCDC
converters in order to achieve highly compact, energy efficient and
cost-effective power management solutions in the growing fields of
wearables and internet-of-things applications. They provide an
introduction into hybrid converters as a new and promising
converter class, which merges capacitive and inductive conversion
concepts into one. Coverage ranges from fundamentals to
implementation details, including topics such as power stage
design, gate drive schemes, different control mechanisms for
resonant operation and integrated passives. Introduces a new,
multi-ratio resonant converter architecture, which enables lower
switching frequencies and better passive component utilization;
Discusses circuit block design for high efficiency of the power
stage; Explores implementation details and concepts for integrated
passives; Derives models, implements and compares to each other
different control mechanisms.
This book provides readers with a single-source reference to
current sensing integrated circuit design. It is written in
handbook style, including systematic guidelines and implementation
examples. The authors focus on the implementation of wide-bandwidth
current sensing on a single microchip, toward usage in applications
such as sensing, control and optimization of the energy flow in
growth areas like industrial electronics, renewable energies, smart
grids, electromobility and the Internet of Things. Provides readers
with a comprehensive, all-in-one source for current sensing
integrated circuit design, including implementation examples;
Discusses modeling and optimization of on-chip Rogowski coil and
Hall sensor in both lateral and vertical orientation; Includes
noise reduction techniques, such as auto-zeroing and chopping;
Covers open-loop and closed-loop sensor front-end design; Presents
the first on-chip current sensor with a planar coil placed besides
a power line to measure internal signal currents and the first
off-chip current sensor with a helix-shaped coil for external
signal currents in the multi-MHz region.
Bringing together contributions from an international group of
social scientists, this collection examines diverse crises, both
historical and contemporary, which implicate market forces,
widening inequalities, social exclusion, forms of resistance, and
ideological polarisation. The Commonalities of Global Crises offers
carefully researched case studies which stretch across large
geographical distances- from Egypt to the US and from northern,
central, eastern and southern Europe to South America- and covers
timely issues including human rights, slavery, care, migration,
racism, and the far right. The volume demonstrates that such
different settings and diverse concerns are characterized by a
common tension in which the crises that unfold around pressures of
widening marketization and commodification are met by the
(re)building or re-assertion of various communities, and competing
politics of solidarity and nostalgia.
Bernhard Weicht provides a multi-layered analysis of how we
understand and construct care in everyday life, the meanings it has
for ourselves, our families, our relationships, identities and our
sense of society and what is right and proper, making an original
contribution to the discussion of the nature of care ethics and its
political potential.
Bernhard Weicht provides a multi-layered analysis of how we
understand and construct care in everyday life, the meanings it has
for ourselves, our families, our relationships, identities and our
sense of society and what is right and proper, making an original
contribution to the discussion of the nature of care ethics and its
political potential.
System-on-a-chip (SoC) designs result in a wide range of
high-complexity, high-value semiconductor products. As the
technology scales towards smaller feature sizes and chips grow
larger, a speed limitation arises due to an in creased RC delay
associated with interconnection wires. Innovative circuit
techniques are required to achieve the speed needed for
high-performance signal processing. Current sensing is considered
as a promising circuit class since it is inherently faster than
conventional voltage sense amplifiers. How ever, especially in
SRAM, current sensing has rarely been used so far. Practi cal
implementations are challenging because they require sophisticated
analog circuit techniques in a digital environment. The objective
of this book is to provide a systematic and comprehen sive insight
into current sensing techniques. Both theoretical and practical
aspects are covered. Design guidelines are derived by systematic
analysis of different circuit principles. Innovative concepts like
compensation of the bit line multiplexer and auto-power-down will
be explained based on theory and experimental results. The material
will be interesting for design engineers in industry as well as
researchers who want to learn about and apply current sensing
techniques. The focus is on embedded SRAM but the material
presented can be adapted to single-chip SRAM and to any other
current-providing memory type as well. This includes emerging
memory technologies like magnetic RAM (MRAM) and Ovonic Unified
Memory (OUM). Moreover, it is also applicable to array like
structures such as CMOS camera chips and to circuits for signal
trans mission along highly capacitive busses."
This book provides a systematic and comprehensive insight into current sensing techniques. In addition to describing theoretical and practical aspects of current sensing, the author derives practical design guidelines for achieving an optimal performance through a systematic analysis of different circuit principles. Voltage sense amplifiers are also considered, since they are used as a final comparator in a current sense amplifier. Innovative concepts, such as compensation of the bitline multiplexer and auto-power-down, are elucidated. Although the focus is on embedded static random access memory (SRAM), the material presented applies to any current-providing memory type, e.g. also to emerging memory technologies such as MRAM. The book will appeal to design engineers in industry and also to researchers wishing to learn about, and apply, current sensing techniques.
This book provides a comprehensive, single-source on resonant
switched-capacitor converters. It is written in the style of a
handbook, with systematic guidelines, and includes implementation
examples. The authors explore integrated hybrid resonant DCDC
converters in order to achieve highly compact, energy efficient and
cost-effective power management solutions in the growing fields of
wearables and internet-of-things applications. They provide an
introduction into hybrid converters as a new and promising
converter class, which merges capacitive and inductive conversion
concepts into one. Coverage ranges from fundamentals to
implementation details, including topics such as power stage
design, gate drive schemes, different control mechanisms for
resonant operation and integrated passives. Introduces a new,
multi-ratio resonant converter architecture, which enables lower
switching frequencies and better passive component utilization;
Discusses circuit block design for high efficiency of the power
stage; Explores implementation details and concepts for integrated
passives; Derives models, implements and compares to each other
different control mechanisms.
This book provides readers with a single-source reference to
current sensing integrated circuit design. It is written in
handbook style, including systematic guidelines and implementation
examples. The authors focus on the implementation of wide-bandwidth
current sensing on a single microchip, toward usage in applications
such as sensing, control and optimization of the energy flow in
growth areas like industrial electronics, renewable energies, smart
grids, electromobility and the Internet of Things. Provides readers
with a comprehensive, all-in-one source for current sensing
integrated circuit design, including implementation examples;
Discusses modeling and optimization of on-chip Rogowski coil and
Hall sensor in both lateral and vertical orientation; Includes
noise reduction techniques, such as auto-zeroing and chopping;
Covers open-loop and closed-loop sensor front-end design; Presents
the first on-chip current sensor with a planar coil placed besides
a power line to measure internal signal currents and the first
off-chip current sensor with a helix-shaped coil for external
signal currents in the multi-MHz region.
This book is a comprehensive reference for power management IC
design. The book covers the circuit design of main power management
circuits like charge pumps, bridge drivers, linear and
switched-mode voltage regulators. Sub-circuits include power
switches, gate drivers and their supply, level shifters, the error
amplifier, current sensing and control loop design. Circuits for
protection and diagnostics as well as system design aspects like
pin-out, floor planning, grounding/supply guidelines will also be
addressed.
This book is a comprehensive, all-in-one source on design of
monolithic GaN power ICs. It is written in handbook style with
systematic guidelines and includes implementation examples. It
covers the full range from technology fundamentals to
implementation details including design techniques specific for GaN
technology. It provides a detailed loss analysis based on
comparative measurements between silicon and GaN based converters
to provide an understanding of the relations between design choices
and results which can be transferred to other power converter
systems.
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