TPS55340-Q1: light load efficiency

K.Yaita

Part Number: TPS55340-Q1
Other Parts Discussed in Thread: TPS55340

Hi Team,

My customer considers to use TPS55340-Q1 for the following application.
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Vin: 5V
Vout: 8V
Iout: 2A(max)
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In addition, light load efficiency around 10mA load is important for their application.
Is there any efficiency data?

Best Regards,
Yaita / Japan disty

over 7 years ago

0 Helen chen over 7 years ago

TI__Mastermind 40080 points

What is the target operation frequency? 400kHz? Because different operation frequency has different test result. For TPS55340, when Io=10mA, it may still works f=fsw and didn't enters into the skip mode.

0 K.Yaita over 7 years ago in reply to Helen chen

Guru 29720 points

Hi Helen-san,

Thank you for your kind support.
My customer considers to set fsw=2MHz however also wants to know when fsw=300kHz.

Best Regards,
Yaita

0 Helen chen over 7 years ago in reply to K.Yaita

TI__Mastermind 40080 points

Got it, will test next week.

0 K.Yaita over 7 years ago in reply to Helen chen

Guru 29720 points

Hi Helen-san,

Thank you always for your kind support!
I will wait for your feedback.

Best Regards,
Yaita

0 Helen chen over 7 years ago in reply to K.Yaita

TI__Mastermind 40080 points

when Vin=5V, Vo=8V

1. fsw=300kHz, efficiency=86.1%;

2. fsw=2MHz, efficiency=69.6%

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TPS55340-Q1: light load efficiency