Hi TI team, can you please review the attached power section from one of my new projects.
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Hi TI team, can you please review the attached power section from one of my new projects.
Hello Govind,
These are my comments after reviewing TPS7A91 schematic:
- It is required to have a 10kΩ to 100kΩ pull-up resistor connected to PG pin.
-Make sure that the time constant of both the LDO startup and the power-good output are matching, which can be done by adding a capacitor in parallel with the power good pullup resistor. For more information, see the Pros and Cons of Using a Feedforward Capacitor with a Low Dropout Regulator.
- Just to make sure that the desired soft-start ramp time is 0.8ms which is calculated using below equation:
Best,
Eunize Tobias