STEF48H28

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30 A electronic fuse for the 9-80 V DC rails

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概要

製品概要

概要

概要

The STEF48H28 is an advanced 30 A integrated electronic fuse for the 9 - 80 V DC power lines.

Connected in series to the main power rail, it provides protections from inrush, under/overvoltage, and overcurrent conditions. When an overload condition occurs, the device reacts with a (I x t) approach with adaptive time to shut down. The overcurrent protection curve can be customized to accommodate for pulsed overloads, typical of CPUs/GPUs. If the overload persists, the device disconnects the load from the bus.

A precise current monitor signal provides continuous information about the load current to the system controller IC. Similarly, a precise temperature sensor generates a monitor signal that permits the system controller to keep the device's power dissipation under control.

Adjustable insertion delay and soft-start time help control the in-rush current during startup operations.

The device also embeds user-adjustable undervoltage/overvoltage lockout protection, power good, self-diagnostic, and thermal protection.

Telemetry and status information is available both in analog form and on the digital PMBUS® interface.

Multiple STEF48H28 can be connected in parallel to support high-power systems, such as AI servers and supercomputers.

  • 特徴

    • 30 A continuous current
    • Input voltage range from 9 to 80 V
    • Absolute maximum rating 95 V
    • SMBUS™ interface
    • PMBUS®™ V 1.3.1 commands compliant
    • Adjustable UVLO and OVLO
    • Integrated 1.7 mΩ power MOSFET
    • Overcurrent protection with adjustable threshold and timeout
    • Fast, adjustable short-circuit protection
    • Thermal protection
    • Power good, fault, and reset functions
    • Programmable soft-start and turn-on delay time
    • Precise current monitor signal
    • Precise temperature monitor
    • Digital voltage, current, power, energy, and temperature telemetry
    • Parallel operation
    • Integrated MOSFET diagnostic features
    • Integrated black-box function
    • Fault latch or auto-retry configuration
    • -40 °C < TJ < 125 °C operating temperature
    • QFN42L (7x7 mm) package - IPC2221B 100 V spacing compatible

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The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Marketing description of the package type.Compliancy of the device with industry requirement domains (IRD)The RoHS status of a product:
ECOPACK 1: Initial grade to identify European RoHS compliant products.
ECOPACK 2: New grade to identify brominated chlorinated and antimony oxide flame retardant free products.
ECOPACK 3: Halogen free RoHS exemptions free products.
(*): ECOPACK 2 version available upon request.
(**): Some versions still existing in ECOPACK 1 or not compliant.Longevity Commitment in yearsLongevity Starting DateThe current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Budgetary PriceMarketing description of the package type.Storage method used to contain product.Main country of assembly or fabrication of the product.ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes. ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.