Single-chip protection solution for USB VBUS line and other power buses

05-01-2015 | Texas Instruments | Power

A new single-chip protection solution for the USB VBUS line or other power
buses, the TPD1S514 has been introduced by Texas Instruments.

Aimed at applications such as cell phones, tablets, eBooks, portable media
players and 5V, 9V, and 12V power rails, the bi-directional nFET switch
ensures safe current flow in both charging and host mode while protecting
the internal system circuits from over-voltage condition at the VBUS_CON
pin. On the VBUS_CON pin, the device can handle over-voltage protection up
to 30VDC.

After the EN pin toggles low, the TPD1S514 waits 20ms before turning ON the
nFET through a soft start delay. The device can be factory programmed to
multiple VOVP, start up and soft start delay combinations.

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