LP8556: Boost Converter Block Diagram

K.Yaita

Part Number: LP8556

Hi Team,

The datasheet shows the following block diagram.
What is the feature of "active load" (red part) block?

The datasheet doesn't show the feature, so I would like to ask.

Best Regards,
Yaita / Japan disty

over 6 years ago

0 Hak-Leong Ng over 6 years ago

TI__Intellectual 1985 points

Hi Yaita,

Let me check with design before getting back to you.

Regards
H L

0 K.Yaita over 6 years ago in reply to Hak-Leong Ng

Guru 29690 points

Hi

I believe the "Active Load" is enabled when OVP is detected.
Is my understanding correct?
If the answer is yes, I would also like to know how much sink current flows when enabled.

Best Regards,
Yaita

0 Caryss Li over 6 years ago in reply to K.Yaita

TI__Expert 4550 points

Hi Yaita-san,
The "Active load" is used to achieve adaptive boost output voltage, I believe it has nothing to do with OVP .

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LP8556: Boost Converter Block Diagram