[ TPS60231 ] Individual Channel Control

Kenichiro

[ TPS60231 ] Individual Channel Control

(Slightly modified from original post)

Hi,

Can you please let me know whether each channel can be enabled/disabled with circuit ideas below? Each gate signals are given by CPU accordingly that enable channel with high signal. In this ideas, EN1 is tied to GND.

It's greatly appreciated, if you can comment this idea, clarify it's possible or not, share any other ideas and/or concerns.

Thanks,

Ken

over 9 years ago

0 Chris Glaser over 9 years ago

TI__Guru*** 148020 points

This should work on every channel except for D1. Since the IC uses D1 to set Vout, you shouldn't open D1.

What are you trying to achieve with this? What are the specs for your application?

0 Kenichiro over 9 years ago in reply to Chris Glaser

Mastermind 9165 points

Hi Chris,

Thank you for your support! Yes, my customer would like to use RGB LED for each channel and control individually.
We should connect each cathode of RGB LED to D1-D3 respectively. Correct? It's appreciated if you share any other concern.

Thanks,
Ken

0 Chris Glaser over 9 years ago in reply to Kenichiro

TI__Guru*** 148020 points

The D1 LED must be always connected (without a transistor) as the IC uses this one to set Vout. The other 2 LEDs are ok.

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[ TPS60231 ] Individual Channel Control

[ TPS60231 ] Individual Channel Control