Author Topic: Boost-Buck Converters and a reference pin  (Read 814 times)

0 Members and 1 Guest are viewing this topic.

Offline roogadgetTopic starter

  • Contributor
  • Posts: 27
  • Country: au
Boost-Buck Converters and a reference pin
« on: October 06, 2018, 09:46:51 am »
I have spent a great amount of time looking for a buck boost converter that outputs 12V.

Turns out it requires an external reference of 5V for the PG pin.

Do these regulators always require a reference?
It seems odd to a beginner (me) that it would require an additional regulator just to use one.
 

Offline aheid

  • Regular Contributor
  • *
  • Posts: 245
  • Country: no
Re: Boost-Buck Converters and a reference pin
« Reply #1 on: October 06, 2018, 10:00:52 am »
From the data sheet:
Quote
PS   7   I   D   Logic-level input signal to enable and disable low-power mode. The power mode is low-power mode when this pin is high (1) and is normal mode when this pin is low (1).

So seems to me that if you're not interested in low-power mode, you can just tie that pin to ground.
 

Offline sd

  • Supporter
  • ****
  • Posts: 46
  • Country: ro
Re: Boost-Buck Converters and a reference pin
« Reply #2 on: October 06, 2018, 11:34:23 am »
PG 15 O D
Output power good pin. This pin is an open-drain pin. The status of the power-good output is good
when this pin is high (1) and has a failure when this pin is low (0)

If you don't need PGOOD, just ignore that pin.
 

Offline aheid

  • Regular Contributor
  • *
  • Posts: 245
  • Country: no
Re: Boost-Buck Converters and a reference pin
« Reply #3 on: October 06, 2018, 10:17:26 pm »
PG

Man I need to learn to double-check things when posting before breakfast...
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf