Advanced hot-swap/e-fuse for robust load protection and efficient power management

HMI has announced the release of the HL8520E, a state-of-the-art hot-swap/E-Fuse device developed to offer superior protection and power control for sensitive load circuitry.

The device protects systems from input transients, shorts, and voltage spikes that may damage load circuitry while managing power delivery to improve reliability. With an input voltage range of 2.7V to 16V, it supports low and high-voltage systems, making it suited to diverse applications. The device can also handle up to 20A of output current, providing reliable performance under heavy loads, ideal for power-intensive applications.

Featuring an integrated low Rds(on) MOSFET with just 2.8mOhm resistance, the device minimises conduction losses, improving power efficiency, and thermal performance. It includes a comprehensive set of protection features, such as over-current protection, short-circuit protection, thermal shutdown, damaged MOSFET detection, over-voltage protection, and under-voltage lockout, safeguarding the device and the load from electrical faults.

The device allows for an external adjustable soft start for smoother system operation, facilitating controlled inrush current during startup. It also provides configurable current limits, delivering further flexibility in power management and helping to ensure safe and reliable operation. The fast response time of less than 200ns for short-circuit protection ensures that the device quickly detects and mitigates fault conditions, minimising system disruption.

The device includes E-Fuse health reporting, which supplies valuable diagnostic feedback for system monitoring and maintenance. The device comes in a compact LGA-26 package (4mm x 4mm), making it ideal for space-constrained applications where efficient use of board space is critical.

“The HL8520E is ideal for a wide range of applications, including servers, hot-swap systems, laptops, and disk drives,” stated Mason Choi, VP/GM of HMI. “Its versatile design and robust protection features make it well-suited for environments where reliable power management and load protection are critical.”