[FAQ] AM62P / AM62P-Q1 Design Recommendations / Custom board hardware design – common queries for PMIC TPS65224-Q1

HI Board designers, 

Please refer below

Q.1 

TPS65219: AM62P support
Customer already use the TPS65219 today for an AM62x design and would like to re-use the same PMIC with the new AM62P.
However, I see our recommendation is to use the new TPS65224-Q1 which is larger and more expensive.
Is there any reason why the TPS65219 can't support the AM62P? Has any analysis been done to show any shortcomings?

The input current requirements are higher for the AM62P than the AM62x, so the TPS65224-Q1 is required to meet these power requirements.
You can see the power architecture in Figure 2-25 in this document: https://www.ti.com/lit/ug/spruja2/spruja2.pdf

Q.2

About the GPIO pins of PMICs
Can the GPIO pins on the PMIC be used as part of the rising and falling sequence signals of the sequence?
The way to use it is to set the output high when the BUCKx starts. If the power supply drops, can the GPIO of the PMIC be set to Low output?
yes this can be implemented with the PFSM but not with simple I2C writes.
PFSM is short for pre-configurable finite state machine which is configured and written to the device by Texas Instruments to meet the customers needs.
Customer can't reprogram the PFSM due to the limitations of OTP (one time programmable memory).

Q.3

About the power rails of TPS65224
We had read that GPIO3(pin8) is used to select the BUCK1&2 output power rail.
The NVM default BUCK1&2 output is 0.75v, actually we want to use 0.85v.

0.75V is the default option. BUCK12 output can be configured to 0.85V by having a 10k pull-up resistor in GPIO3 when powering the TPS6522430-Q1.

Q,4 About ADC (GPIO4 and GPIO5)

From GPIO pin assigned as ADC_IN to ground. If GPIO4
is used as ADC_IN, VADC_IN ≤ VIO. If GPIO5 is used as
ADC_IN, VADC_IN ≤ 1.8V

Regards,

Sreenivasa

HI Board designers, 

Depending on the use case TPS65224 can be used with AM62A7 / AM62A7-Q1 / AM62A3 / AM62A3-Q1 processor family.

Please refer below for queries related to operation of PMIC with 5V input

(+) TPS65224-Q1: PMIC operation with 5V operation for AM62A - Power management forum - Power management - TI E2E support forums

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1454622/tps65224-q1-pmic-operation-with-5v-operation-for-am62a/5594165#5594165

Regards,

Sreenivasa