TPSM831D31: Total OutA+loadA and OutB+loadB cap. value

Kevin Huang67

Intellectual 410 points

Part Number: TPSM831D31

Hi Sir,

What's the maximum total capacitance value of VoutA+load A(0.6V~1.3V,120A)?

What's the maximum total capacitance value of VoutB+load B(0.35V~1.3V,40A)?

I am afraid of the total capacitance too large to damage the TPSM831D31.

over 3 years ago

0 Nastasha over 3 years ago

TI__Genius 10000 points

Hi,

As shown in the spec, the typical capacitance values for the output rails depend on whether ceramic caps are used. We have a minimum spec to guarantee stability and performance of this module, but there is not a maximum spec. There is not a risk of damaging the device if you have more than the typical spec value for the output capacitance. The system requirements will likely guide whether you need more capacitance than the typical values recommended.

Thanks,

Nastasha

0 Kevin Huang67 over 3 years ago in reply to Nastasha

Intellectual 410 points

Hi Nastasha,

If no load B and reserved Vout B to connect to banana jack, can I just route FB_B0 trace to banana jack and put 100uF near banana jack and route FB_B1 trace to gnd point near banana jack ?

The software is to disable Vout B ?

0 Nastasha over 3 years ago in reply to Kevin Huang67

TI__Genius 10000 points

Kevin,

I don't see any issue with this. The OPERATION register can disable Channel B if not needed.

Thanks,

Nastasha

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TPSM831D31: Total OutA+loadA and OutB+loadB cap. value