3.3V CMOS to 28V conversion

Abdul Erfan Mohammad104180

Hi Support,

I have to generate the 28V/GND logic from 3.3V/GND signal. Can you please suggest the circuit with part number. I also need to have current source and sink options possible on these outputs with optical isolation.

Regards,

Erfan

over 11 years ago

0 Ron Michallick over 11 years ago

TI__Guru**** 168356 points

Abdul,

How many bits of data and what is the maximum bit rate?
Are the 28V and 3.3V grounds the same or isolated?

0 Abdul Erfan Mohammad104180 over 11 years ago in reply to Ron Michallick

Intellectual 285 points

Hi Ron Michallick,

It is very slow speed status signals which may run till 1Mbps max. I have shown the type of outputs that I want to implement in below images. Total 3 kind of outputs

1. Discrete output (200mA) - 8 No's

2. High side drive output (Current source - 200mA)- 16 No's

3. Low side drive output (Current sink type - 200mA)) - 24 No's

Regards,

Erfan

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3.3V CMOS to 28V conversion