Semtech Releases HotSwitch Platform for Protection of Electronic Systems against Fault Conditions

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Semtech Corporation, a leading global supplier of high-performance analog and mixed-signal semiconductors and advanced algorithms, announced the release of the HotSwitch^® platform. This platform includes integrated load switches and eFuses with first-of-their-kind elevated protection feature sets optimized for protecting electronics systems against typical electrical transients and steady-state fault conditions.

Electronic waste, or e-waste, is the fastest-growing source of waste globally with e-waste volumes growing to 53.6 million metric tons in 2019, an increase of 21% since 2014 according to the Environmental Protection Agency. With consumers now owning up to 22 connected devices, the potential amount of e-waste has become an ongoing challenge for electronic systems manufacturers. Semtech’s HotSwitch platform, which aids in safeguarding electric systems, provides elevated protection features that prolong the life span of electronic devices and potentially reduce e-waste.

“Semtech has a long-established reputation as a trusted and leading innovator and provider of circuit protection,” said Tamir Reshef, vice president of marketing for Semtech's Protection Products Group. “With the new HotSwitch platform, Semtech has expanded the protection tools available to the design community for safeguarding systems, prolonging operational life and enabling the use of electronic systems in a more environmentally sustainable manner.”

HotSwitch devices are specifically designed to detect electrical surges and provide robust security to the downstream subsystem by gracefully disconnecting the load from the power source. They offer an enhanced shield against inrush current, overvoltage, under voltage, reverse current, short circuit, and over-temperature faults.

Two HotSwitch platform products are available now and can be purchased through Semtech’s distribution channels.

HS2950P, a single-channel integrated high-side load switch
 With a wide input voltage range of 2.7V to 29V, supporting up to 5A output current, this product features a low 25mΩ (typical) Rds(on) to minimize power loss and contains various adjustable protection features, including soft-start, turn on-delay, overvoltage, under-voltage, and current limit. HS2950P comes in a small 3x3mm 12-pin DFN package. The device offers thermal shutdown functionality and faults flagging to ensure a rugged defence for downstream industrial, telecom and consumer systems subject to transients and short circuits risk.

HS2240P, an integrated eFuse and surge protection device
 Designed to protect against various electrical overstress (EOS) conditions including lightning, electrostatic discharge (ESD), short circuits and inrush current capabilities, this device works in an input voltage range of 2.7V to 22V, with a current limiting threshold of 3.9A. It incorporates a high ESD withstand voltage of ±30kV for air and contact per IEC 61000-4-2. The VIN pin of this device is rated for a high-energy transient current of up to 40A (tp =8/20μs). HS2240P comes in a small 3.5x2mm 14-pin DFN package.

Universal Features of Semtech’s HotSwitch Platform

• Integrated protection circuitry that can replace conventional fuses and other protection devices.
• Delivery of higher system reliability with safety features like overcurrent, voltage, temperature and reverse current blocking.
• Enhanced system dynamic behaviors, including limited inrush current, proper loading sequence, handling minor disturbances in a system power line, and injecting lesser interference among loads.
• Longer battery life for systems with low leakage and quiescent currents.
• Lower bill of materials (BOM) count and smaller printed circuit board (PCB) area than discrete or multi-chip solutions.
• Ability to embed IEC 61000-4-2 level compliant ESD protection for some applications.

Join Semtech in an upcoming webinar, “How To Use a HotSwitch For System Protection,” on Dec. 6, 2022, at 8 a.m. PT (5 p.m. CET) to learn more about the performance advantages of the HotSwitch platform, and why the system is ideal for the engineering and circuit protection community to continually evolve electronics systems for industrial, telecom and consumer industries.

Click here to learn more about HotSwitch Platform.