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TPS2398

ACTIVE

-36-V to -80-V hot swap controller with power good

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Data sheet

TPS2398

ACTIVE
Data sheet Order now

Product details

FET External Vin (min) (V) -80 Vin (max) (V) -36 Vabsmax_cont (V) -100 Current limit (min) (A) 0.01 Current limit (max) (A) 500 Overcurrent response current limiting Fault response Latch-off Soft start Adjustable Features Fault output, Power good signal Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 85 Function Adjustable current limit, Inrush current control, Power good signal, Short circuit protection
FET External Vin (min) (V) -80 Vin (max) (V) -36 Vabsmax_cont (V) -100 Current limit (min) (A) 0.01 Current limit (max) (A) 500 Overcurrent response current limiting Fault response Latch-off Soft start Adjustable Features Fault output, Power good signal Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 85 Function Adjustable current limit, Inrush current control, Power good signal, Short circuit protection
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Wide Input Supply Range: –36 V to –80 V
  • Transient Rating to –100 V
  • Improved Transient Response
  • Enable Input (EN)
  • Programmable Current Limit
  • Programmable Current Slew Rate
  • Fault Timer to Eliminate Nuisance Trips
  • Open-Drain Power Good Output (PG)\
  • 8-Pin MSOP Package
  • APPLICATIONS
    • –48-V Distributed Power Systems
    • Redundant Negative Voltage Supplies
    • Central Office Switching
  • Wide Input Supply Range: –36 V to –80 V
  • Transient Rating to –100 V
  • Improved Transient Response
  • Enable Input (EN)
  • Programmable Current Limit
  • Programmable Current Slew Rate
  • Fault Timer to Eliminate Nuisance Trips
  • Open-Drain Power Good Output (PG)\
  • 8-Pin MSOP Package
  • APPLICATIONS
    • –48-V Distributed Power Systems
    • Redundant Negative Voltage Supplies
    • Central Office Switching

The TPS2398 and TPS2399 integrated circuits are hot swap power managers optimized for use in nominal –48-V systems. For redundant-supply systems, they incorporate an improved circuit breaker response that provides rapid protection from short circuits, while still enabling plug-ins to tolerate large transients that can be generated by the sudden switchover to a higher voltage supply. They are designed for supply voltage ranges up to –80 V, and are rated to withstand spikes to –100 V. In conjunction with an external N-channel FET and sense resistor, they can be used to enable live insertion of plug-in cards and modules in powered systems. Both devices provide load current slew rate and peak magnitude limiting, easily programmed by sense resistor value and a single-external capacitor.

They also provide single-line fault reporting, electrical isolation of faulty cards, and protection against nuisance overcurrent trips. The TPS2398 latches off in response to current faults, while the TPS2399 periodically retries the load in the event of a fault.

The TPS2398 and TPS2399 integrated circuits are hot swap power managers optimized for use in nominal –48-V systems. For redundant-supply systems, they incorporate an improved circuit breaker response that provides rapid protection from short circuits, while still enabling plug-ins to tolerate large transients that can be generated by the sudden switchover to a higher voltage supply. They are designed for supply voltage ranges up to –80 V, and are rated to withstand spikes to –100 V. In conjunction with an external N-channel FET and sense resistor, they can be used to enable live insertion of plug-in cards and modules in powered systems. Both devices provide load current slew rate and peak magnitude limiting, easily programmed by sense resistor value and a single-external capacitor.

They also provide single-line fault reporting, electrical isolation of faulty cards, and protection against nuisance overcurrent trips. The TPS2398 latches off in response to current faults, while the TPS2399 periodically retries the load in the event of a fault.
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Technical documentation

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Type Title Date
* Data sheet -48V Hot Swap Controller datasheet (Rev. A) 03 Sep 2003
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Selection guide Hot Swap Selection Tool 28 Jul 2015
EVM User's guide TPS2398EVM User's Guide 18 Aug 2003

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Calculation tool

TPS2398OR99CALC — TPS2398/TPS2399 Design Calculator

This is a design calculator spreadsheet for the TPS2398 and TPS2399 Hot-swap controllers. Users should use this for simple calculation of values for components to go with the controller.
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TPS2398 — -36-V to -80-V hot swap controller with power good TPS2399 — -36-V to -80-V hot swap controller with enable
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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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