STPM801-TR

Hot Swap Controllers Overview

The STPM801-TR is a single-channel automotive hot-swap and ideal diode controller designed for high-redundancy power architectures. It integrates soft-start and OR-ing protection functions, utilizing external N-channel MOSFETs to manage load protection against transient voltages, overvoltage (OV), and undervoltage (UV) conditions. The device supports a wide input voltage range of 4 V to 65 V with reverse input protection up to -65 V. Key electrical specifications include a static current of less than 50 µA when the WAKE pin is low, compliance with AEC-Q100 standards, and adherence to ISO 26262 development processes supporting ASIL D applications. It features an integrated charge pump and adjustable soft-start via external capacitance.

Hot Swap Controllers Feature Summary

• Integrates hot-swap, soft-start, and OR-ing protection capabilities to safeguard loads from high transient voltages and regulate output during overvoltage events like load dumps.
• Features an integrated ideal diode controller that drives a second MOSFET to replace Schottky diodes, ensuring reverse input protection and maintaining output voltage during power failures or short circuits.
• Supports functional safety requirements aligned with ISO 26262, enabling deployment in applications demanding ASIL D certification levels.

Hot Swap Controllers Applications

• Regional and body electronic control units (ECU)
• Advanced Driver Assistance Systems (ADAS) ECU
• High-performance computing ECU
• Automotive infotainment ECU
• Redundant power transmission systems

Hot Swap Controllers Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm the specific tape-and-reel packaging configuration matches system automation requirements. Ensure the revision level aligns with design-in documentation. Request full datasheets and application notes for integration validation. Check for any end-of-life notifications or alternative part recommendations from the manufacturer.

Hot Swap Controllers Selection Notes

Select this controller for automotive designs requiring robust power management with dual-supply redundancy. It is suitable for systems needing precise current limiting and voltage regulation under harsh electrical conditions. Consider the external MOSFET selection carefully to match the controller's drive capabilities and thermal performance. Evaluate the need for ASIL D compliance to determine if this component meets the specific safety integrity targets of the application architecture.

Hot Swap Controllers Part Context

The STPM801 belongs to STMicroelectronics' portfolio of automotive power management ICs focused on reliability and safety. It complements other PMIC solutions by providing specialized control for hot-swap and ideal diode applications. This component addresses the growing demand for redundant power architectures in modern vehicles, supporting complex electronic ecosystems in ADAS and high-performance computing domains.

Hot Swap Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult STMicroelectronics official resources for potential obsolescence management or cross-reference options.

Hot Swap Controllers FAQ

How does the STPM801 handle reverse input protection?

The device provides reverse input protection up to -65 V by controlling the voltage drop across external N-channel MOSFETs, preventing damage during incorrect polarity connections.

What is the maximum input voltage supported by the STPM801?

The STPM801 supports a wide input voltage range from 4 V to 65 V, making it suitable for various automotive power bus configurations.