Active Part Numbers:
Meaning of P & Z
Mobile devices, and smartphones in particular, are one of todays largest technology markets. As the market continues to grow, it is changing and increasing complexity faster than ever. The combination of consumer expectations and increased power demands due to smartphones many integrated technologies and features mean that companies need to always be ready for whats coming next. Today, the lead...
BATTERY CHARGER FUNDAMENTALS
Li-ion battery charger ICs are devices that regulate battery charging current and voltage, and are commonly used for portable devices, such as cellphones, laptops, and tablets. Compared to other battery chemistries, Li-ion batteries have one of the highest energy densities, provide a higher voltage per cell, can tolerate higher currents, and do not have to be trickle charged when the battery is fu...
MP2629: UNBOXING AND GETTING STARTED
Our engineers walk you through unboxing and getting started with the evaluation kit for the MP2629, a buck charger IC with NVDC and an I2C interface. The EV2629-QC-00A evaluation board provides the ability to test and configure following features: 3.7V to 5.8V operating input voltage NVDC power path with 4.5A charge current Adjustable 4.8V to 5.5V output voltage Configurable charging paramet...
LITHIUM-ION BATTERY CHARGER IC BASED MAXIMUM POWER POINT TRACKING SYSTEM
In an era characterized by the internet of things (IoT), more connectivity means more outdoor devices are now battery-powered and constantly communicating. In particular, an increasing number of outdoor devices are being powered through solar panels. The charger should be suitable for maximum power point tracking (MPPT) in outdoor designs with a solar panel. This article illustrates design tips fo...
HOW TO ACHIEVE FAST CHARGING WITH USB PD IN PORTABLE DEVICES
Today’s consumers want to conveniently and quickly charge their portable devices anywhere, whether they are in a business center or shopping mall, or waiting for a flight or train. However, there are many different types of charging adapters and connectors, which can make determining which charger or chargers to have on hand confusing for the end user. If the consumer has to carry multiple d...
HOW TO SELECT A LITHIUM-ION BATTERY CHARGE MANAGEMENT IC
John B. Goodenough, considered the father of lithium-ion (Li-ion) batteries, became the oldest Nobel Prize winner when he was awarded the Nobel Prize in Chemistry in 2019 for his pioneering work. Nowadays, Li-ion batteries are utilized in all aspects of life for most consumers since they make electronic devices lightweight and long-lasting. For example, most mobile phones rely on a Li-ion battery ...
BATTERY CHARGER WITH MPPT REFERENCE DESIGN
HIGHLY INTEGRATED BATTERY-CHARGING SOLUTION WITH INNOVATIVE POWER PATH MANAGEMENT
To achieve compact design for battery-powered devices, the battery is usually not removable and the capacity is limited by the space reserved for the battery. As a result, the operation time of the device is a major concern as devices are built with more and more power-consuming functions. To improve the portability of battery-powered devices, another auxiliary charging device with greater battery...
SINGLE CELL SWITCH MODE BATTERY CHARGER
Highly-integrated switch-mode battery charger with system power path management and system boost designed for single-cell Li-ion or Li-Polymer batteries. Battery Management > MP2636
UNDERSTANDING QUIESCENT CURRENT AND SHUTDOWN CURRENT WITH A BOOST CONVERTER
For battery-powered applications, an excellent user experience depends on a long battery life and high-performance terminal devices. Quiescent current (IQ) is an important parameter to consider when optimizing these applications; in particular, an improved IQ increases battery life. This article will describe the difference between a boost converter’s IQ and shutdown current (ISD) to provide a de...
USB TYPE-C CHARGING CONNECTORS: DESIGN, OPTIMIZATION, AND INTEROPERABILITY
In June 2022, the EU parliament approved a mandate that will require the next generation of portable devices to be compatible with USB Type-C charging connectors. Manufacturers have until fall 2024 to make their products compatible with USB Type-C cables by adding a USB Type-C connector. Affected industries include mobile phones, digital cameras, handheld video game consoles, portable speakers, ke...
OPTIMIZING HAPTIC HMIS FOR RELIABILITY WITH MAGNETIC SENSORS
Rotary dials are used in diverse applications for human-machine interfaces (HMI). Touch interfaces include the buttons, knobs, and dials on everyday devices, from automobiles and white goods, to the touch screen on your mobile phone. These devices not only translate human input into an electrical signal, but they also provide an important feature — haptic feedback. This is especially useful for sa...
ANGLE SENSOR USE CASE: FOLDABLE PHONES
In this use case, we’ll examine the application of MagAlpha Angle Sensors in foldable phones.As the electronics industry for smartphones and tablets moves towards bezel-less and foldable display designs, new challenges have arisen that require engineers to address space constraints. Flexible displays in foldable phones benefit from angle sensors with a combination of low-power, long battery life, ...
AUDIBLE POWER SUPPLY NOISE
The design requirements of today’s switching power supplies are driven by efficiency requirements not only at full load, but also under sleep mode or no-load conditions when the cable is disconnected. Power system integrators have to meet new regulations from agencies such as Energy Star, 80 Plus, and the European Commission’s CoC, regardless of the power supply’s load condition....
MP2731 USB PD REFERENCE DESIGN: 4.5A, NVDC SINGLE-CELL CHARGER WITH OTG
The MP2731 USB power delivery (PD) reference design provides a complete solution for USB PD applications that comply with USB PD3.0 specifications. The major components of this reference design include the MP2731 — a 4.5A, narrow voltage DC (NVDC) single-cell Li-ion battery charger — and a CCG3PA (USB PD controller). The reference design offers a bidirectional DRP Type-C port. When a ...
SURFACE-MOUNTED INDUCTORS OPTIMIZED FOR MPS ICS
The new surface-mounted power inductors from Monolithic Power Systems are designed for applications ranging from power supplies to power converters. The molded and semi-shielded series inductors include inductance ranges from 0.33µH to 22µH, and saturation current ranges from 0.8A to 64A. This series includes molded, magnetic-shielded power inductors that offer soft saturation due t...
5G BASE STATION COMPLEXITY DRIVES THE NEED FOR LOW-EMI DC/DC MODULE SOLUTIONS
The 5G telecom standard is intended to support the ever-increasing data volume requirements from smartphones and smart connected devices in markets such as home and industrial automation, autonomous vehicles, healthcare, and smart wearables. 5G enables many more data connections per base station by using what are called “massive multiple-input multiple-output” (massive-MIMO) antenna ar...
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