AWR1243BOOST: Maximum power comsumption at AWR1243BOOST.

Tomotaroh Kohro

Genius 17185 points

Part Number: AWR1243BOOST
Other Parts Discussed in Thread: TPS7A88

Regarding power consumption. About RF input of 1.3V , document describes maximum 2000 mA.

AWR1243Boosts EVM has TPS7A88 that the current limit of LDO is 1.5 - 1.9A.

(1) What kind of conditions were used when the maximum power consumption was calculated.

(2) I would like to know if there are any cases that EVM cannot work by LDO maximum current limit.

Best Regards

KORO

over 8 years ago

0 Vivek Dham over 8 years ago

TI__Guru 58035 points

Hello Koro San,
The TPS7A88 has two outputs, each of the outputs can give 1- 1.5 A current , so we can get > 2A current from both the outputs. We use one output for the 1p3_RF1 pin and other for 1p3_RF2 pin.
The conditions in which the max 2A current is considered is with 2TX, 4RX operatinal at the same time. This current is observed during the chirp period.

Regards,
Vivek

0 Tomotaroh Kohro over 8 years ago in reply to Vivek Dham

TI__Genius 17185 points

Dear Vivek-san.

Thanks a lot.

Best Regards
KORO

0 Tomotaroh Kohro over 8 years ago in reply to Vivek Dham

TI__Genius 17185 points

Dear Vivek-san.

I understood that it is no issue at EVM use.

Regarding maximum power consumption, it is depended on process variations. Are these values considering this process variations too?

Best Regards

KORO

0 Vivek Dham over 8 years ago in reply to Tomotaroh Kohro

TI__Guru 58035 points

Hello Koro San,
You are right, these do take into account the process variation.

regards,
Vivek

0 Tomotaroh Kohro over 7 years ago in reply to Vivek Dham

TI__Genius 17185 points

Vivek-san.

Thanks a lot.

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AWR1243BOOST: Maximum power comsumption at AWR1243BOOST.