ON Semiconductor has introduced the NCP362, proclaiming it to be the industry’s first overvoltage protection (OVP) device with both integrated current protection and high-speed electrostatic discharge (ESD) protection for USB 2.0 applications in portable, telecom, consumer and computing systems. This integrated device improves safety of USB ports by streamlining design in portable electronics by eliminating the need for standalone OVP, over-current protection (OCP) and transient voltage suppressor (TVS) components that are normally necessary to protect vulnerable portable devices against electrical surge damage and electronic discharge from host, wall adapters, human body and unsuitable after-market AC-DC adapters.
The device, which is placed behind the USB or bottom connector, provides +20 V front end protection for the downstream USB port, thanks to an integrated power MOSFET that can handle 500 mA. Because long cables can induce ringing due to serial inductance in the USB cable, the NCP362 has been designed to open the VBUS line when the voltage transient exceeds the internal over-voltage threshold, which is internally set to 5,675 V. This threshold value can be changed by a metal tweak if a different value is needed for a specific application. In addition, OCP is available, opening the internal MOSFET if the downstream VBUS’s load exceeds 750 mA, supporting 500 mA continuously for the USB ports. This current clamp value can be also adjusted to a lower value to be compliant to 100 mA single or dual ports.
Both protections are very fast – at fewer than 100 nanoseconds – offering an efficient protection level for the downstream transceiver, battery charger devices or Lithium battery to be charged. In addition, the NCP362 offers system level IEC 61000-4-2 ±15 kV ESD protection. The part integrates high-speed ESD diodes for data lines (D+ and D-) and TVS for the VBUS pin of the USB ports. Due to the low capacitance of integrated ESD diodes (0,5 pF), this device is compliant with the USB 2.0 protocol.
Accelerate development of physical AI deployments Altron Arrow
DSP, Micros & Memory
With Avocado OS now available on the HummingBoard RZ-V2N-
AIoT and SolidSense AIoT V2N from SolidRun, teams can move from prototype to deployed fleet in weeks.
Read more...Universal NFC device Altron Arrow
DSP, Micros & Memory
Delivering high-end performance in a compact 4 x 4 mm package, the multipurpose NFC reader from ST Microelectronics, enables the convenience of contactless interaction and features for various end applications.
Read more...Compact direct Time-of-Flight 3D LiDAR module Altron Arrow
AI & ML DSP, Micros & Memory
The VL53L9 from STMicroelectronics is the first direct Time-of-Flight (dToF) 3D LiDAR all-in-one module in ST’s portfolio, offering a resolution of 2,3K zones, wide field of view, on-chip processing, 100 frames per second, and sensing range from 5 centimeters to 9 meters.
Read more...SoC brings scalable edge AI to life Altron Arrow
AI & ML
The NXP i.MX 937 applications processor is optimised for performance without excessive power draw and bridges the gap between entry-level chips and high-end processors.
Read more...Compact direct Time-of-Flight 3D LiDAR module Altron Arrow
Opto-Electronics Electronics Technology AI & ML
The VL53L9 from STMicroelectronics is the first direct Time-of-Flight (dToF) 3D LiDAR all-in-one module in ST’s portfolio, offering a resolution of 2,3K zones, wide field of view, on-chip processing, 100 frames per second, and sensing range from 5 centimeters to 9 meters.
Read more...Generating negative voltages from a positive supply Altron Arrow
Editor's Choice Passive Components
It is common for IoT devices, industrial sensors, meters, and medical equipment to require both a positive and negative voltage, and this article explains the options available to produce a negative rail from a positive rail supply.
Read more...Addressing latency and signal integrity challenges Altron Arrow
DSP, Micros & Memory
Strengthening Microchip Technology’s data centre solutions portfolio, its XpressConnect retimers support high-bandwidth architectures, while helping reduce integration complexity.
Read more...Precision timing in compact package Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Designed for use in harsh environments, the EX-423 incorporates a four-point mounted quartz crystal structure that improves shock resistance and reduces g-sensitivity.
Read more...EMC limits and levels Altron Arrow
Editor's Choice Circuit & System Protection
As soon as electronics and electrical systems started interfering with each other, the world had to come to some consensus. Considering physics is universal and does not care about what country electrical/electronic products are used in, it should be the same everywhere, right? It is nearly there, but not quite.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version