Product overview
Description
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.
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All features
- 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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EDA Symbols, Footprints and 3D Models
Quality and Reliability
Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
---|---|---|---|---|---|
STEF48H28 | Preview | PWFQFN 7X7X1.2 48L PITCH 0.5 | Industrial | Ecopack2 | |
STEF48H28SL | Preview | PWFQFN 7X7X1.2 48L PITCH 0.5 | Industrial | Ecopack2 | |
STEF48H28
Package:
PWFQFN 7X7X1.2 48L PITCH 0.5Material Declaration**:
STEF48H28SL
Package:
PWFQFN 7X7X1.2 48L PITCH 0.5Material Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
STEF48H28SL | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
STEF48H28 | | | distributors No availability of distributors reported, please contact our sales office |
STEF48H28SL Preview
STEF48H28 Preview
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors