TPS54302: tps54302 at light load

Terry Wu2

Expert 2110 points

Part Number: TPS54302

Hello Sirs,

May I know why Cout need 330uF Cap for 18V to 5.25V 0.1A condition ? Can I use 10uF *1 or 22uF *1 for Cout ?

Many thanks !

webench.ti.com/.../webench5.cgi

over 6 years ago

0 Shawn Nie over 6 years ago

TI__Genius 10070 points

Hi,

Please refer to datasheet "Table 2. Recommended Component Values". At light load, TPS54302 works at skip mode, the ripple is larger than CCM, if you want to reduce the ripple, a larger Cout is needed, but you should make sure the loop is stable.

Shawn

0 Terry Wu2 over 6 years ago in reply to Shawn Nie

Expert 2110 points

Hi Shawn,

Got it.TKS !

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TPS54302: tps54302 at light load