LP87702-Q1: Power dissipation spec

Roy Chou1

Genius 12505 points

Part Number: LP87702-Q1
Other Parts Discussed in Thread: PEET-GUI

Hi Team,

Do we have Power dissipation spec of LP87702-Q1?

Roy

over 3 years ago

0 Samuli Piispanen over 3 years ago

TI__Expert 4355 points

Hi Roy,

You can use PMIC Efficiency Estimator Tool (PEET-GUI) to see the efficiency. Simply select LP87702-Q1 and set the buck and boost settings accordingly. The data is based on real measurements in room temperature.

https://dev.ti.com/gallery/view/PMIC/PMIC-Efficiency-Estimator-Tool/ver/0.9.0/

Best regards,

Samuli Piispanen

0 Roy Chou1 over 3 years ago in reply to Samuli Piispanen

TI__Genius 12505 points

Hi Samuli,

We would like to know Pout(max) of each rail that could suffer. Do we have related spec?

Roy

0 Samuli Piispanen over 3 years ago in reply to Roy Chou1

TI__Expert 4355 points

Hi Roy,

Bucks have maximum output voltage of 3.3 V and boost's maximum output voltage is 5.2 V. Peak current limits are configurable for each DCDC converter separately but for DC current the maximums are 3.5 A for bucks and 600 mA for boost.

Thermal shutdown occurs at 150 °C which limits the maximum possible output power depending on operating conditions e.g. ambient temperature, used switching frequency etc.

Best regards,

Samuli Piispanen

0 Roy Chou1 over 3 years ago in reply to Samuli Piispanen

TI__Genius 12505 points

Hi Samuli,

In addition, do we have SSC frequency range spec?

Roy

0 Samuli Piispanen over 3 years ago in reply to Roy Chou1

TI__Expert 4355 points

Hi Roy,

Sorry for the delayed response.

Spread spectrum frequency varies from 0.85xfsw to fsw where fsw is the switching frequency. Switching frequency also has 10% tolerance itself.

Best regards,

Samuli Piispanen

Power management

Power management forum

LP87702-Q1: Power dissipation spec