TPSM84A22: Could you please help check with power loss analysis to see how many load is ok (not trigger over temperature）for the module based on the customer's set up?

Frank Xiao

Genius 12055 points

Part Number: TPSM84A22

Hi team,

My customer tested our EVM board with VIN 12V, Vout 1.8v, load 10A, no fan, ambient 95°C, and find the device will trigger thermal shutdown.

You know the module's performance will change based on the device variation. So they cannot get the result based on one board test result.

Could you please help check with power loss analysis to see how many load is ok (not trigger over temperature）for the module based on the customer's set up?

Thanks.

over 5 years ago

0 Jimmy Hua over 5 years ago

TI__Mastermind 47060 points

Hi Frank,

The customer's ambient temperature of 95degC is too high for a 12V/1.8V at full load application. Figure 6 shows a "Safe Operating Area" for 12V/1.8V. At full load with natural convection(black), the maximum recommended temperature is roughly 77degC based on the graph.

Regards,
Jimmy

Power management

Power management forum

TPSM84A22: Could you please help check with power loss analysis to see how many load is ok (not trigger over temperature）for the module based on the customer's set up?