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TPS61088-Q1: simulation Pspice model issue

Lawrence He
Genius 3115 points
Part Number: TPS61088-Q1
Other Parts Discussed in Thread: TPS61378-Q1, TPS61178

Hi, Support Team

our client use TPS61088-Q1 of Pspice model to simulation, and we find EN pin pull low to GND but output have a voltage?

schematic:

20240517-slvmau6a Add EN 100K to gnd-Schematic (003).pdf

waveform:

20240517-slvmau6a Add EN 100K to gnd-Simulation (001).pdf

if any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence

  • 0
    TI__Genius 16295 points

    Hi Lawrence,

    The device is not true load disconnected.

    When EN is low, the body diode of high side MOS can conduct Vin to Vout.

    If you need a boost with true disconnect, please refer to TPS61378-Q1 or TPS61178.

    Best Regards,

    Fergus