TPS23523 TPS2352x -48 V High Performance Hot Swap and ORing Controller |


TPS2352x -48 V High Performance Hot Swap and ORing Controller



The TPS23523 is an integrated hot swap and OR-ing controller that enables high power telecom systems to comply with stringent transient requirements. The 200-V absolute maximum rating makes it easier to survive lightning surge tests (IEC61000-4-5). The soft start cap disconnect allows for the use of smaller hot swap FETs by limiting the inrush current, without hurting the transient response. The dual hot swap gate driver saves space and BOM cost in high power applications that require multiple hot swap FETs.The 400-µA sourcing current allows fast recovery, which helps to avoid system resets during lightning surge tests. The dual current limit makes it easier to pass brown outs and input steps such as required by the ATIS 0600315.2013. Finally, it offers accurate undervoltage and overvoltage protection with programmable thresholds and hysteresis.

The TPS23523 integrates an OR-ing controller, making it ideal for –48-V systems that require reverse hook-up protection and reverse-current protection. The OR-ing controller protects the output when the input drops avoiding system resets.


  • –10-V to –80-V DC Operation, –200-V Absolute Maximum
  • Soft Start Cap Disconnect
  • Dual Hot Swap Gate Drive
  • 400-µA Gate Sourcing Current
  • Dual Current Limit (based on VDS)
    • 25 mV ±4% When Low VDS
    • 3 mV ±25% When High VDS
  • Programmable UV(±1.5%) and OV (±2%)
    • Programmable Hysteresis (±11%)
  • Integrated OR-ing Controller
    • Regulation: 25 mV ±15 mV
    • Fast Turn off: –6 mV ±4 mV
  • Retries After Time Out
  • 16-Pin TSSOP

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Parametrics Compare all products in eFuses & hot swap controllers

Number of channels (#)
Vin (Min) (V)
Vin (Max) (V)
Vabsmax_cont (V)
Overcurrent response
Current limit type
Fault response
Current limit function enabled
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
TPS23523 TPS23521 TPS23525
1     1     1    
External     External     External    
-10     -10     -10    
-80     -80     -80    
-200     -200     -200    
Soft-Start     Soft-Start     Soft-Start    
Current Limiting     Current Limiting     Current Limiting    
Adjustable     Adjustable     Adjustable    
Auto Retry     Auto Retry     Auto Retry    
Always     Always     Always    
Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125    
TSSOP | 16     TSSOP | 16     TSSOP | 16    
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)