Power Management

The ongoing demand for smaller form factors and faster charging times of mobile products continue to drive the need for efficient, high-density power delivery (PD) for charging with a wide input voltage (VIN) range of 5V

Zhen-Yu Yang1, Ke-Horng Chen1, Kuo-Lin Zheng1,2, Ying-Hsi Lin3, Shian-Ru Lin3, Tsung-Yen Tsai3, Wei-Cheng Huang1 National Yang Ming Chiao Tung University, Hsinchu, Taiwan 2 Chip-GaN Power Semiconductor, Hsinchu, Taiwan 3

Shahar Wolf2, Ashoke Ravi1, Krishnan Ravichandran1, Ofir Degani2, James W. Tschanz1, Vivek De1 Intel, Hillsboro, OR Intel, Haifa, Israel 1 2 Power delivery components are critical for meeting size and weight requirements

Instituto Superior Tecnico/University of Lisboa, Lisbon, Portugal 1 2 Direct 12V-to-1V power delivery has become popular in datacenter applications. Multiple outputs regulated by switching regulators are favorable to red

Sai-Weng Sin1, Rui P. Martins1,3 University of Macau, Macau, China Zhuhai UM Science & Technology Research Institute, Zhuhai, China 3 Instituto Superior Tecnico/University of Lisboa, Lisbon, Portugal 1 2 A high-efficienc

computing needs in data center, autonomous vehicle, and mobile device processors demand increasingly large peak currents at scaled-CMOScompatible voltages (<1V). To ease otherwise high I2R losses in power delivery (PD),

compute/memory and analog/mixed-signal circuits such as SerDes transceivers, RF/wireless front-end, PLLs, sensors, etc. On-chip low-dropout regulators (LDOs) isolate the input Vin noise from switching DC-DC converters po

foldable phones, the number of smart phones that use two batteries are gradually increasing [1]. In ultra-fast charging applications, two batteries are connected in series as shown in Fig. 30.3.1. The output voltage of t

vibration energy have gained popularity as a next-generation energy source owing to their numerous advantages including flexibility, high conversion efficiency, and low cost. However, ultrahigh instantaneous open-circuit

Shuo Li, Xinjian Liu, Benton H. Calhoun University of Virginia, Charlottesville, VA Energy harvesting and power management units (EHPMUs) are gaining popularity for self-powered Internet-of-Things (IoT) applications due

interfaces on acoustic Internet-of-Things (IoT) sensor nodes and mobile devices require integrated low-power always-on wake-up functions such as Voice Activity Detection (VAD) and Keyword Spotting (KWS) to ensure longer

*Equally-Credited Authors (ECAs) Many envisioned IoT applications are not realizable today due to the mW-level power burden of wireless communication circuits for the most popular consumer standards: WiFi and BLE. To hel

Southern University of Science and Technology, Shenzhen, China 1 2 The interconnects between a quantum processor and control electronics can be made more compact and reliable by placing classical circuits at cryogenic te

Extensive research on quantum mechanics in past decades has successfully paved the way towards the disruptive technology of quantum computing. A further step to the realization of a fault-tolerant scalable quantum comput

Mark Yeck1, Joseph A. Glick1, Raphael Robertazzi1, Ray Richetta2, John F. Bulzacchelli1, Daniel Ramirez2, Dereje Yilma2, Andrew Davies2, Rajiv V. Joshi1, Shawn D. Chambers2, Scott Lekuch1, Ken Inoue1, Devin Underwood1, D

transceiver systems, shown in Fig. 19.7.1, offer flexibility for multiband, multi-user, and joint communication-and-sensing platforms. However, wideband MIMO applications increase the number of desired or interfering sig

ETH Zurich, Zurich, Switzerland 1 2 Mm-wave 5G communication seeks to support multi-Gb/s data-rates over its large available spectrum, particularly in the K/Ka bands (24 to 40GHz). To ensure sufficient link budget under

ETH Zurich, Zurich, Switzerland 1 2 The continuous growth of data-rates has stimulated the rapid development of 5G New Radio (NR) in the mm-wave FR2 bands (above 24GHz). Consequently, to compensate for the mm-wave high p

increase of the speed and data-rate achieved by 5G. A major challenge in 6G is to provide a large transmitter output power (Pout) with high energy efficiency and linearity from a limited supply voltage to overcome high p

data-rates in wireless communications has driven the rapid development of silicon-based transceivers in the mm-wave and sub-THz bands. The broad available spectrum in D-band (110 to 170GHz) is attracting interest for sho

University of Lisboa, Lisbon, Portugal 1 2 The profile of portable and wearable devices keeps shrinking, demanding high current density power management integrated circuits. Switched-capacitor (SC) converters and buck co

High conversion-ratio (CR) DC-DC boost converters are essential for LED backlighting in smartphone and tablet displays. For realizing a high CR, a conventional boost (CB) converter [1] shown in Fig. 18.7.1 would use a la

computing cores with a wide-range sub-volt rail, the energy-efficient high and wide voltageconversion-ratio (VCR) converters are crucially important. In addition, low form factor and decent transient responses are also f

In the last decade, hybrid and resonant switched-capacitor (SC) converters have gone from a relatively unexplored concept to one that is gaining widespread adoption in a range of applications [1]. However, despite capabi

University of Lisboa, Lisbon, Portugal 1 2 Automotive and industrial applications require a high-efficiency DC-DC converter to directly convert power from the 12V intermediate bus to a low-voltage point-of-load (PoL). Th

12V/24V-to-1V power converters with high efficiency and fast transient responses are highly desirable in industrial and automotive applications. Double step-down (DSD, also known as series-capacitor) converters are among

processors, a high-frequency and multi-phase (MP) integrated voltage regulator (IVR) using multiple inductors would be an ideal solution to deliver optimized power with rapid dynamic voltage scaling (DVS) [1-5]. Neverthe

Chin-Hsiang Liang1, Kai-Syun Chang1, Kai-Cheng Chung1, Ke-Horng Chen1, Ying-Hsi Lin2, Shian-Ru Lin2, Tsung-Yen Tsai2 National Chiao Tung University, Hsinchu, Taiwan, Realtek Semiconductor, Hsinchu, Taiwan 1 2 Today’s min

The applications of large-area electronics (LAEs) based on thin-film transistors (TFTs) are rapidly expanding from displays to sensors. For the TFT gate drivers, high-voltage bipolar supply rails (approximately ±15V) are

multi-output (SIMO) converter offers the advantage of small size and can provide distributive voltage/current for wearable electronic devices. However, there are still some design challenges to solve. In continuous-condu

wireless sensor node (WSN). However, energy harvesting resources are inherently sporadic and critically affected by their environment, mandating energy storage elements (e.g., battery or super-capacitor) to guarantee a r

Inductive DC-DC converters are fundamentally limited by the trade-off between conduction losses and switching losses. Miniaturized converters used in applications such as mobile devices suffer badly from this trade off,

Suhwan Kim1, Xiaosen Liu1, Huong T. Do2, Kaladhar Radhakrishnan2, Krishnan Ravichandran1, James W. Tschanz1, Vivek De1 Intel, Hillsboro, OR Intel, Chandler, AZ 1 2 High-performance many-core processors and GPUs demand 10

electronics has strengthened the demand for fully integrated power management circuits. Buck converters offer high efficiency, but they cannot satisfy the stringent size requirements because bulky off-chip inductors are

NXP Semiconductors, Chandler, AZ 1 Autonomous-driving features have increased the load power demand of processors, which in turn, have resulted in the development of a 48V bus in electric vehicles. The resulting high and

Efficient high-conversion-ratio power delivery is needed for many portable computing applications which require sub-volt supply rails but operate from batteries or USB power sources. In such applications, the power manag

*Equally-Credited Authors (ECAs) It is projected that 75 billion Internet-of-Things (IoT) devices will be deployed for applications such as wearable electronics and smart home by 2025. Securing IoT devices is one of the

Dinesh Bharadia1, Patrick P. Mercier1 University of California San Diego, La Jolla, CA Broadcom, San Diego, CA 1 2 Wi-Fi is the most ubiquitous wireless networking technology for IoT in homes, offices, and businesses. Si

applications presents a challenge for chip-level thermal management and also tends to be inefficient. Straightforward parallelizing of LDOs to increase output current is a flawed approach since subtle variations between

Digital low-dropout regulators (DLDOs) are commonly used in low-power systemon-chips (SoCs) because of their low-voltage operation and fast transient response via the digital control of a power gate. However, the digital

from sub-g vibrational environments while having a volume of a few cm3. Thus, such EMHs are promising candidates for powering net-zero-power sensor nodes as compared to their electrostatic- or piezoelectric-based counter

extraction capability of piezoelectric energy harvesters (PEHs), the quality factor of mechanical resonators should be maximized over the extraction-energy frequency bandwidth (EFB). As a result, the EFB is often limited

attractive solution. There are two types of WPT receivers (RXs), voltage-mode (VM) RX [1], [2] and current-mode (CM) RX [3], [4]. The VM-RX is suitable when the coupling coefficient (k12) between the transceiver (TX) and

Arian Hashemi Talkhooncheh, Minwo Wang, Mikhail G. Shapiro, Azita Emami California Institute of Technology, Pasadena, CA Substantial advances in the field of surgery have taken place in recent years, which aim at decreas

Si Hoon Lee1, Kwangmin Park1, Jaeheung Lim1, Minchul Lee1, Jeongho Park1, Hyun Kim1, Young Ok Lee2, Hyun Su Ahn2, Eunseok Shin1, Hyungjong Ko1, Seoungjae Yoo1, Hyunsurk Ryu1, Yongin Park1, Joonseok Kim1, Long Yan1 Samsun

China 1 2 IoT devices usually operate in random-sparse-event scenarios (Fig. 20.2.1). To avoid missing events, traditionally a periodic-wake-up frequency [1] must be orders of magnitude higher than the average event rate

San Diego, CA 1 2 Nearly all IoT devices require wireless connectivity, and to keep costs down and deployment opportunities up, communication should ideally occur with widely deployed commodity hardware such as WiFi. How

Increased switching frequency of power devices for power electronics allows for compact and lightweight circuit implementations for variety of applications, including power factor corrections, DC/DC converters, and motor

Samsung Electronics, Hwaseong, Korea 1 2 Demand for DC-DC voltage conversion from a 48V input has been on the rise due to proliferation of server and automotive applications with a 48V intermediate bus and 48V batteries,

standard as a charging solution for mobile devices [1]. Moreover, the extended specification includes programmable power supply (PPS) which is suitable for fast charging mobile devices by allowing the power source to dyn