LM5105- HO-Driver and LO-Driver

Hirotaka Matsumoto

Other Parts Discussed in Thread: LM5105

Hi all

Would you mind if we ask LM5105?

<Question1>
As the operation of HO-Driver and LO-Driver, there are only Sink and Source mode.
Is there Hi-z mode? As our recogniton, we think it doesn't exist .Is our recognition correct?

<Question2>
And then, when the device is power down, disable, or UVLO, both drivers are sink operation, aren't there?

Kind regards,

Hirotaka Matsumoto

over 9 years ago

0 Hirotaka Matsumoto over 9 years ago

Guru 27585 points

Hi team,

We guess that your days are so busy, however could you give us some comment?

Kind regards,

Hirotaka Matsumoto

0 Oliver Pan91 over 9 years ago in reply to Hirotaka Matsumoto

TI__Intellectual 2230 points

HI Hirotaka,

Sorry for delay reponse, for your question;

1. Yes, you are correct, both output of the driver can only be high or low, there isn't existing the Hi-z status.
2. During the UVLO and disable, the driver output is held low. Please notice that UVLO condition on VDD will hold low both high-side and low-side output(HO&LO) and UVLO condition on the bootstrap capacitor(HB-HS) will only hold low the high side output (HO)

Best Regards
Oliver

0 Hirotaka Matsumoto over 9 years ago in reply to Oliver Pan91

Guru 27585 points

Oliver san, Thank you for your help.

Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.

Power management

Power management forum

LM5105- HO-Driver and LO-Driver