TPS22860: "power dissipation" and "Ron value on Vin=5V"

Motoyasu Hattori

Genius 9455 points

Part Number: TPS22860

Hi,

Please advise us how to calculate "pd - power dissipation".

Could you please let us know the Ron value on Vin=5V? We only find Ron value of Vin=3.3V/2.0V/1.8V.

Thanks and best regards,
M.HATTORI.

over 4 years ago

0 Andy Robles over 4 years ago

TI__Genius 13650 points

Hi Hattori,

Power dissipation in a load switch is calculated with the output current and Ron of the load switch [ PD = (I^2) * Ron ]

What VBIAS voltage would you be using in the application? This will affect Ron of the load switch.

Best regards,

Andy Robles

0 Motoyasu Hattori over 4 years ago in reply to Andy Robles

TI__Genius 9455 points

Hi, Andy-san,

VIN and VBIAS is 5V. Please advise us.

Thanks and best regards,
M.HATTORI.

0 Andy Robles over 4 years ago in reply to Motoyasu Hattori

TI__Genius 13650 points

Hi Hattori-san,

Ron for VIN = VBIAS = 5V would have a typical value of Ron = 0.73ohms. Figure 3 in the datasheet can also be used to obtain a margin of the Ron value across temperature from -40C to 85C.

Best regards,

Andy Robles

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TPS22860: "power dissipation" and "Ron value on Vin=5V"