Hot-swap controller with current limiting and soft start
19 May 2004
Power Electronics / Power Management
Residential Estate (Industry)
Products & Solutions
Analog Devices' ADM1073 is a -48 V hot swap controller designed for central office applications. The device uses a number of techniques to protect the external N-channel FET and the supply against inrush currents during board insertion and short circuits in the event of board failure.
Soft start, with adjustable current limit profile, controls the current during FET turn-on, and a programmable current limit determines the maximum current. An adjustable PWM retry scheme limits the FET on-time in the event that the output voltage does not reach the required value in a single on cycle, and the device will shut down the FET after seven consecutive retries. Further safe operating area (SOA) protection is provided by reducing the FET on-time as the voltage drop across the FET increases.
Key features are: precision linear inrush current limiting soft start inrush current limit profiling; precision current limit ON time protects FET; adjustable current limit threshold; adjustable PWM retry scheme and multiple device cascading for charging large capacitive loads; outputs indicate whether load capacitor fully charged and whether supply in or out of limit; shutdown after seven consecutive auto-restarts for FET protection; restart input for user-triggered 5 second shutdown and auto-restart; shunt regulator for operation over wide supply range; supply undervoltage and overvoltage monitoring with adjustable hysteresis is user-programmable.
A 'micro' evaluation board is available.
Further reading:
Secure, modernise and optimise CCTV
Surveillance Products & Solutions
Industrial and commercial organisations are navigating complex digital transformation processes. With SecuVue, companies can bridge the gap between operational technology and information technology for safer, smarter operations.
Read more...
Water mist for optimal fire suppression
Fire & Instrument Services
Fire & Safety Products & Solutions
Building owners, facility managers and other professionals are seeking fire suppression solutions that can meet the demands of modern buildings and facilities, including reduced water usage and environmental impact, while providing the necessary protection for assets and business operations.
Read more...
Smoke 'em out
Fire & Safety Products & Solutions
The moment an intrusion is detected, Smoke Screen’s high-powered fog cannons activate, flooding the area with a dense, harmless fog that reduces visibility to near zero within seconds.
Read more...
IoT innovation in water mist fire protection
Fire & Safety Products & Solutions IoT & Automation
Marioff, a provider of water mist fire protection, has introduced an Internet of Things (IoT) solution designed for high-pressure water mist systems, enabling real-time monitoring, smart alerts, and centralised control.
Read more...
Advanced fire safety solutions
Fire & Safety Products & Solutions
With fire incidents on the rise, it is crucial to choose fire safety solutions that are proven, reliable, and capable of providing early detection and efficient response.
Read more...
Next-gen power meter
Electrocomp Express
Power Electronics / Power Management
The VT-PWR-LV is a next-gen Vista Touch power meter from Trumeter for single, split, and three-phase systems.
Read more...
Advanced PMIC for high-performance AI applications
ASIC Design Services
Power Electronics / Power Management
Microchip Technology has announced the MCP16701, a Power Management Integrated Circuit (PMIC) designed to meet the needs of high-performance MPU and FPGA designers.
Read more...
New SiC power MOSFET
Future Electronics
Power Electronics / Power Management
STMicroelectronics’ SCT012H90G3AG is a robust, automotive-grade SiC MOSFET, engineered for demanding power electronics, featuring a 900?V drain-source voltage and exceptionally low on-resistance of 12?mO at 60?A.
Read more...
Fundamental motor control design challenges and solutions
Power Electronics / Power Management
Mouser Electronics has announced a new eBook in collaboration with Qorvo, featuring industry experts providing key insights into methods, power efficiency and integration solutions available for motor control applications.
Read more...
Power management IC for battery products
Power Electronics / Power Management
The nPM1304 PMIC complements Nordic’s nPM1300 PMIC with a highly integrated, ultra-low power solution and precision fuel gauging for small size battery applications.
Read more...
printer friendly version