LM5116: LM5116 to be a source/sink function

Chen Alex1

Genius 3865 points

Part Number: LM5116
Other Parts Discussed in Thread: LM5170-Q1, TPS53313

HI sir

could I use the LM5116 to be a source/sink function

over 4 years ago

0 Timothy Hegarty over 4 years ago

TI__Guru 74912 points

Hello,

Depends on what you mean by a sink function. In general, the buck controller is not designed to operate in the reverse direction as a boost in steady state. However, take a look at the LM5170-Q1 as an example of a bidirectional controller.

Regards,

Tim

0 Chen Alex1 over 4 years ago in reply to Timothy Hegarty

Genius 3865 points

hi tim

yes, I need a power stage for sink & source function for Battery test

the TPS53313 6-A I used in the past can sink about 30w of power, now I need a power for sink 1000w in new project

thanks

0 Timothy Hegarty over 4 years ago in reply to Chen Alex1

TI__Guru 74912 points

When you say "sink", do you mean transfer back to the input? If so, I think the LM5170-Q1 is a good solution. However, the TPS53313 is just a standard buck converter, so it should only be able to sink current on a transient basis.

Regards,

Tim

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LM5116: LM5116 to be a source/sink function