TPD1S514 Surge and ESD Protection

TPD1S514 Surge and ESD Protection

Texas Instruments' TPD1S514 is a single-chip protection solution for the USB VBUS line or other power buses. The bidirectional nFET switch ensures safe current flow in both charging and host mode while protecting the internal system circuits from any over voltage condition at the VBUS_CON pin.

On the VBUS_CON pin, this device can handle over voltage protection up to 30 VDC. After the EN pin toggles low, the TPD1S514 waits 20 ms before turning ON the nFET through a soft start delay. TPD1S514 can be factory programmed to multiple VOVP, start up and soft start delay combinations.

  • Over voltage protection at VBUS_CON up to 30 VDC
  • Precision OVP ( < ±1% tolerance):
    Factory programmable VOVP of 5.6 to 15 V
  • Low RON nFET switch supports host and charging mode
  • Dedicated VBUS_POWER pin offers flexible power up options under dead battery condition
  • Factory programmable startup and soft start delays
  • Transient protection for VBUS line:
    • IEC 61000-4-2 contact discharge ±15 kV
    • IEC 61000-4-2 air gap discharge ±15 kV
    • IEC 61000-4-5 open circuit voltage 100 V
      • Precision clamp circuit limits the VBUS_SYS voltage < VOVP
  • USB inrush current compliant
  • Thermal Shutdown (TSD) feature