Power Electronics / Power Management


Fast 100 V MOSFET driver handles high capacitance gates

19 November 2003 Power Electronics / Power Management Residential Estate (Industry)

Linear Technology's LTC4440 is a 100 V transient tolerant high-side N-channel MOSFET driver with powerful gate drivers that minimise switching losses in power supplies.

Housed in ThinSOT (SOT-23) and 8-lead MSOP packages, the IC's 80 V (100 V transient) operation, peak pull-up output current of 2,4 A and 1,5 Ω pull-down output impedance make it ideally suited for driving high gate capacitance, high voltage and high current standard threshold MOSFETs.

The IC improves the efficiency and output power capability of a DC/DC converter by reducing MOSFET gate drive fall and rise times to 7 and 10 ns, respectively, when driving 1000 pF loads. The LTC4440 is designed to improve power supply performance in 48 V telecom systems as well as distributed power systems in industrial and automotive applications. It features supply independent TTL/CMOS compatible input thresholds. The input logic signal is internally level-shifted to the boot-strapped supply, which may function at up to 115 V above ground.

The IC contains both high side and low side undervoltage lockout circuits that disable and protect the external MOSFET when activated. The LTC4440 is rated for extended temperature range operation from -40 to 85°C ambient.

For more information contact Memec SA, 011 897 8600.





Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

3-terminal filters for automotive applications
RS South Africa Power Electronics / Power Management
TDK has expanded its YFF series of 3-terminal filters for automotive applications to include higher voltages up to 35 V and higher capacitances up to 4,7 µF.

Read more...
Simple battery charger ICs for any chemistry
Altron Arrow Editor's Choice Power Electronics / Power Management
The LTC4162 is a highly integrated, high voltage multi-chemistry synchronous monolithic step-down battery charger and PowerPath manager with onboard telemetry functions and optional maximum power point tracking.

Read more...
Why your PoE budget could make or break your next installation
Power Electronics / Power Management
In South Africa’s often unpredictable networking environments, understanding and planning your PoE budget is essential for system reliability, customer satisfaction, and long-term scalability.

Read more...
Five-minute EV charging a reality
Power Electronics / Power Management
Successfully demonstrated in Beijing recently at the Shanghai auto show, BYD claimed to add 400 km of range in just five minutes of charging.

Read more...
The evolution of power management in electronics
TRX Electronics Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.

Read more...
Power and precision in a compact package
Conical Technologies Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.

Read more...
Robust PoE module
CST Electronics Power Electronics / Power Management
The Ag59800-LPB high power, IEEE 802.3bt compliant, PD module from Silvertel offers typical efficiency of 95% making it an ideal choice for higher power, space-constrained applications.

Read more...
Cutting-edge solutions for Africa’s clean energy future
Power Electronics / Power Management
As Africa pushes towards reliable, affordable, and sustainable energy, Sungrow is driving transformation with cutting-edge innovations that enhance grid stability, reduce energy costs, and expand access to clean power.

Read more...
Transformer protection is a critical safeguard for municipal power stability
Power Electronics / Power Management
Transformer protection is not just a technical requirement; it is a vital component in ensuring the resilience and operational integrity of South Africa’s municipal power infrastructure.

Read more...
Reliable power solution
Conical Technologies Power Electronics / Power Management
The Mibbo MLD-120W-xxVx is a robust DIN-rail mounted DC-DC converter with a 120 W output capacity specifically designed for industrial and automation applications.

Read more...









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.




© Technews Publishing (Pty) Ltd | All Rights Reserved