Linear Technology’s new LTM4641 is a 4,5 V to 38 V input, 0,6 V to 6 V output, 10 A step-down µModule regulator with comprehensive electrical and thermal protection for loads such as processors, ASICs and high-end FPGAs.
The IC monitors input voltage, output voltage and temperature conditions. If any user-adjustable trip thresholds are exceeded, it responds within 500 ns in the case of an output over-voltage fault, ceasing operation and, if necessary, activating external switches.
One switch disconnects the input supply rail while the other discharges the output capacitors to protect the load. Additionally, when any trip threshold is exceeded, the LTM4641 will issue a logic level fault signal which may be used to initiate an orderly emergency shutdown sequence in the system.
The adjustable trip thresholds are accurate to within ±2,7% over the full operating temperature range. As a μModule regulator, the device includes power MOSFETs, DC-DC controller, inductor, compensation and the protection logic circuits in a compact surface-mount BGA package.
The LTM4641 is designed for point-of-load regulation in robotics and industrial instrumentation, as well as rugged environments such as defence and avionics systems.
When any trip threshold is exceeded, the IC’s protection circuitry classifies the fault in one of two categories – latching or non-latching. Normal voltage regulation will automatically resume once a non-latching fault such as input under-voltage, bias input under-voltage or input over-voltage has cleared.
For latching faults such as an output over-voltage or a second input over-voltage threshold, the system must cycle the input power or supply a logic level signal to the LTM4641 in order to resume normal operation. An over-temperature fault can be classified by the user as a latching or non-latching fault by setting a logic level pin. The device can be configured to autonomously restart after latch-off fault conditions have cleared.
The output voltage is user adjustable from 0,6 V to 6 V with ±1,5% total accuracy over line, load and temperature. Additional features include output current sharing for loads requiring more than 10 A, externally adjustable soft start, output over-current protection, switching frequency and output voltage tracking.
The LTM4641 is packaged in a thermally efficient 15 x 15 x 5,01 mm RoHS compliant BGA with guaranteed operation over the -40°C to +125°C (E grade and I grade) or -55°C to +125°C (mp grade) internal temperature range.
ABB’s Mission to Zero drives South Africa’s energy transition ABB Electrification Products
Power Electronics / Power Management
ABB Electrification is charting a bold path towards a net-zero future with its Mission to Zero programme, a blueprint that combines energy efficiency, electrification, and digital innovation to accelerate the transition to clean energy.
Read more...Energy harvesting using a battery-less IoT system NuVision Electronics
Editor's Choice Power Electronics / Power Management
Energy Harvesting plays an essential role in the foundation of ambient IoT, a new generation of ultra-low power connected devices that operate by drawing energy from their environment instead of relying on traditional batteries.
Read more...Driving power, defining performance Future Electronics
Power Electronics / Power Management
Vishay’s portfolio of inductors, current sense resistors, and MOSFETs provides a comprehensive solution for intelligent power management.
Read more...Battery simulator module simplifies BMS testing Test Dynamics
Power Electronics / Power Management
The PXI/PXIe solution from Pickering Interfaces offers a scalable, modular design for faster development cycles, lower total cost of ownership, and improved safety.
Read more...DC PSU: The cornerstone for efficient solar-storage systems Vepac Electronics
Power Electronics / Power Management
PV energy storage systems are evolving and DC power supplies, with their technical characteristics that are naturally compatible with new energy, have become a key carrier for improving system energy efficiency.
Read more...Converter power modules for 48 V networks Altron Arrow
Power Electronics / Power Management
The economic and quality-of-life benefits of electrification is driving the adoption of HV to 48 V DC-DC conversion across many markets with 48 V power modules becoming more common.
Read more...Memory for asset tracking Altron Arrow
DSP, Micros & Memory
The Page EEPROM, ST’s latest memory, has been designed for efficient datalogging and fast firmware upload/download in battery-operated devices.
Read more...Microchip and AVIVA Links collaboration Altron Arrow
News
Microchip and AVIVA Links have achieved groundbreaking ASA-ML interoperability, accelerating the shift to open standards for automotive connectivity.
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