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TPL5110-Q1: TPL5110-Q1

Part Number: TPL5110-Q1

one shot mode::

1. Is the programmed time interval still selected as shown in 8.5.3?Or a fixed value?

2. In this mode, if the DELAY/M_DRV pin is connected to the power supply through the closed switch during the power-on period, it is always HIGH. How is the programmed time interval calculated?

3. During power on, the DELAY/M_DRV pin is connected to the power supply through the open switch, that is, the pin is normally connected to R_EXT. After the RESISTANCE READING is completed, the DELAY/M_DRV pin is connected to the power supply through the closed switch, that is, it is always HIGH.

4. Can the DRV respond to the DELAY/M_DRV pin level falling edge?

5. What is the power supply voltage range of this chip?What happens when the supply falls below or jumps around the lower voltage limit?

  • A1. Yes, that is correct.

    A2. See section 8.5.2; the time interval will not be set until the switch is opened

    A3. See A2 above

    A4. The falling edge will correspond with the start of the next time interval, t_IP, after t_DB expires. Otherwise, the device responds to rising edges on the inputs.

    A5. The supply range is 1.8V to 5.5V. If the supply voltage exceeds 6V, it exceeds the absolute maximum ratings and the device is susceptible to permanent damage. The device will not function once supply voltage drops below the UVLO of ~1.6V - 1.7V

    Kind regards,
    Lane

  • A4.
    If the DELAY/M_DRV pin is connected to the power supply through a closed switch, it is always HIGH and the time > t_IP. Is the DRV a periodic output or a single output?If it's a periodic output, is the period t_IP?
    A5.
    What happens when the power supply oscillates between 1.5 and 2V?

  • Q6. If the DELAY/M_DRV pin is connected to the power supply through a closed switch, it is always HIGH and the time > t_IP. Is the DRV a periodic output or a single output?If it's a periodic output, is the period t_IP?

    A6. t_IP will not be set until the switch is opened. DRV output will periodic (timer) or a single pulse (one-shot) depending on the connection of EN/ONE_SHOT (pin 6)

    Q7. What happens when the power supply oscillates between 1.5 and 2V?

    A7. Every time the power supply drops to 1.5V, the device will turn off. 

    Kind regards,
    Lane