UCC27712: TIDA-00961 circuit query

Dae Hyun Kim

Prodigy 125 points

Part Number: UCC27712

Hi. there.

I'm DH.Kim

I'm reviewing the totem pole PFC using TIDA-00961.

and attached file is the circuit of TIDA-00961.

please see the attached file and page 2(two) with UCC27712DR(U102)

there are L1 and H1 in I.C

The input PWM from DSP is that LI is from Si_Gate_H and HI is from Si_Gate_L.

But, I think, LI is from Si_Gate_L, HI is from Si_Gate_H.

I'm a little bit confused. Please let me know which one is correct.

over 4 years ago

0 Don Dapkus over 4 years ago

TI__Guru**** 189401 points

Hi,

Can you re-attach the image? It didn't get attached correctly.

0 Dae Hyun Kim over 4 years ago

Prodigy 125 points

It is the circuit using UCC27712.

I think, in Si_Gate_H, H means High and in Si_Gate_L, L means Low.

so i'm confused.

Thanks.

tidrv40a.pdf

0 Salil over 4 years ago in reply to Dae Hyun Kim

TI__Expert 3860 points

Hi,

This is because of a schematic entry error in version 2. This error was corrected in software, and hence does not affect the operation of the circuit.

Regards,

Salil

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UCC27712: TIDA-00961 circuit query