TPS2391DGKR

Hot Swap Controllers Overview

The TPS2391DGKR is a single-channel hot-swap controller designed for -48V distributed power systems. It operates within a supply voltage range of -36V to -80V and withstands transient spikes up to -100V. The device controls an external N-channel FET to manage inrush current and protect against overcurrent faults. Key programmable parameters include current limit, slew rate, and fault timeout via external components. It features automatic retry on load errors, UVLO, and a drain-open fault output. Packaged in an 8-VSSOP, it supports surface-mount installation with an operating temperature range of -40°C to 85°C.

Hot Swap Controllers Feature Summary

• Automatic retry mechanism recovers from load errors without latching off
• Programmable current limiting and slew rate control via external resistor and capacitor
• Integrated fault timer prevents nuisance tripping during startup transients
• Leakage-free fault reporting through open-drain output pin

Hot Swap Controllers Applications

• -48V distributed power systems
• Central office switching equipment
• Wireless base stations

Hot Swap Controllers Procurement Notes

Verify the complete part number including the DGKR suffix to ensure correct tape-and-reel packaging and VSSOP package variant. Confirm RoHS-3 compliance status as required by specific regional regulations. Check for any recent PCN notifications regarding assembly or material changes that may affect qualification. Ensure compatibility with existing BOM specifications for thermal management and footprint dimensions.

Hot Swap Controllers Selection Notes

Select this component when automatic recovery from transient load faults is required, distinguishing it from the latching TPS2390. Verify that the system operates within the -36V to -80V input range. Ensure sufficient external components are available to program the desired current limit and slew rate. Consider the 8-pin package constraint for board space limitations compared to wider packages.

Hot Swap Controllers Part Context

This device belongs to the TPS239x family of hot-swap controllers optimized for telecom infrastructure. It shares core protection logic with the TPS2390 but differs in fault handling behavior. The DGKR suffix indicates a specific reel quantity and tape configuration for automated assembly. It complements other TI PMIC solutions for comprehensive power management in central office environments.

Hot Swap Controllers Replacement Considerations

TPS2390DGKR serves as a functional substitute if latching fault behavior is acceptable instead of automatic retry. Both share identical pinouts and programming requirements. Verify that the application does not strictly require the non-latching characteristic unique to the TPS2391 series before swapping.