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TPS63001: en pin not turning off output

Kevin Pingel
Prodigy 90 points
Part Number: TPS63001

I Have built the Circuit as shown in the diagram except the en pin is separately connected to a control source. Problem is when en is pulled to gnd i still get voltage out. 4v. is the part damaged? shouldn't the output be disconnected with en low?

www.ti.com/.../diagram.tsp

  • 0
    TI__Expert 7925 points

    Hi Kevin,

    The device should be turned off when driving the EN pin low. Can you please check:

    • Are you driving a wrong pin (for example PS/SYNC instead of EN)?
    • Are you driving the EN pin with proper voltage levels (less than 0.4 V needed to turn of EN pin)?
    • Do you have any load? In shutdown, there is no active discharge, and the output capacitor will keep the voltage until the it is discharged by the load or self-discharged.

    Best regards,
    Milos

  • 0
    TI__Expert 7925 points

    Hi Kevin,

    We haven’t heard back so we're assuming this answers your question. If not, just post a reply below, or create a new thread if the thread has locked due to time-out.

    Thanks and regards, Milos