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TPS562209: About application report SLVA477B output voltage setting Equation 9

Len Hsu2
Intellectual 2440 points
Part Number: TPS562209
Other Parts Discussed in Thread: TPS562200

Hi team,

About application report SLVA477B had mentioned that current IR1/2 needs to >100 times IFB.

But as TPS562209 datasheet mentions.

Output: 3.3V, R2=33.2K, R3=10K

IR1/2= 3.3/(33.2K+10K) = 0.0764 mA

But this didn't meet  >100 times IFB.

Why these two result can't meet?

  • 0
    TI__Expert 6425 points

    HI Hsu, 

    There is a typo about TPS562200 datasheet about IFB. The unit of IFB should be uA. please check TPS562200 datasheet which is hand by hand part of TPS562209. The only differences is mode at light loading. so the suggested FB resister is no problem for TPS562209. 

    BRs, 

    Edwin