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TPS2113: if IN1/IN2 Input voltage same?

Part Number: TPS2113

If the tps2113 IN1/IN2 input voltage is the same(from EN=0, VSNS=0), what happens to the output?


AND I'm looking for a device that uses IN1->IN2 sequentially, not outputting a high voltage value, available without any control such as enable/vsense. I'm waiting for your recommendation.

  • Hi Kwon,

    When EN=0 and VSNS=0, the device will use a mode of operation that compares IN1 and IN2. In this mode, there is a certain voltage hysteresis amount and deglitch time that is built in to the device to avoid the device from bouncing between the inputs in the situation that the voltages as equal. This is spec'd in the datasheet at the end of Page 4 within the Electrical characteristics section. (min = 0.1V max=0.2V)

    If IN1 was greater than IN2 (or applied first) and then IN2 rose to the same value, then it would continue to output IN1. But if IN2 is applied first or was greater, and then IN1 rose up to the same value, IN2 would still output until IN1 rose above the hysteresis threshold for longer than the deglitch time.

    Do note that for auto-switchover, a resistor divider network can be used to VSNS and the point of switchover can be set. You do not require a separate control signal to this pin to use TPS2113.

    Thank you for choosing TI PowerMUX for your designs.

  • Thank you for your reply.