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Texas Instruments TPS25947EVM eFuse Evaluation Module (EVM)

Texas Instruments TPS25947EVM eFuse Evaluation Module (EVM) has 4 channels and enables evaluation of TPS259470L, TPS259472A and TPS259474L eFuses from the TPS25947xx family. Channels 1 and 4 are standalone channels and provide programmable OVCSEL, OVLO, ITIMER, dVdt, and ILM settings. Channels 2 and 3 share a common ground plane and provide the option to evaluate power muxing and parallel operation capabilities of TPS25947xx eFuse. The input power is applied at connectors J1, J9, J12, J16 while J2, J8, J11, J15 provide the output connection for Channels 1, 2, 3, and 4 respectively. TVS diodes D1, U7, D14, and D5, provide input protection from transient overvoltages, while Schottky diodes D2, D12, D15, and D6 provide output protection for the Texas Instruments TPS25947xx eFuses in Channels 1, 2, 3, and 4, respectively. S1, S2, S3, and S4 allow U1, U2, U3, and U4 to be RESET or disabled. A Power Good (PG) indicator is provided by D3. A scaled device current can be monitored at TP15, with a scale factor of 0.13 V/A.

Features

  • 2.7V to 23V (typ) operation
  • 0.5A to 6A programmable current limit using onboard jumpers
  • Programmable output voltage slew rate control
  • Programmable transient current blanking timer
  • Programmable current limit
  • Power Mux and Parallel configurations
  • TVS diode for input transient protection
  • Onboard Schottky diode at output prevents negative spike during overcurrent faults
  • LED status for Power Good and Fault indication

Required Equipment

  • Power Supplies
    • One adjustable power supply 0V to 30V output, 0A to 10A output current limit
  • Meters
    • One DMM minimum needed
  • Oscilloscopes
    • A DPO2024 or equivalent, three 10x voltage probes, and a DC current probe
  • Loads
    • One resistive load or equivalent which can tolerate up to 10A DC load at 24V and capable of the output short

Applications

  • Hot-Swap, Hot-Plug
  • Server standby rails
  • Optical modules
  • PCIe, SSDs, and HDDs
  • Routers and switches
  • Industrial PC
  • Digital TV

Test Setup

Mechanical Drawing - Texas Instruments TPS25947EVM eFuse Evaluation Module (EVM)

Texas Instruments TPS25947EVM eFuse Evaluation Module (EVM)