- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Dear Sir/madam
Application Note - AN76530
Heading - PSoC® 1 Automotive Ultrasonic Distance Measurement
In the above mentioned application note, on page no - 13, there is a connection for the Power Jack .
I just wanted to know that what Input unregulated voltage would be given to this power jack.
and wether it would be DC or Ac .
Waiting for your solution regarding the same
Regards
- Labels:
-
PSoC 1
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Looks like nominal is 12 V. Max for regulator is 26 V, but that probably exceeds Tj for
the regulator under load. You need to calculate load current, and do the thermal analysis
to make sure you do not exceed Tj, even though it does have internal thermal protection
and short circuit capability.
Regards, Dana.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
The power circuit shown in AN76530 provides provision to connect one of 3 sources -battery (VBAT), supply from DC adapter (PWR JACK) and voltage from another circuit (VIN). If you are using a single source, you don't have to connect D6 and D5.
You can either use a battery of 12V or build a unregulated power supply (~12V) (step down transformer -> bridge rectifier). For 5V regulator, you can use most commonly available IC LM7805.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
One of the bigger challenges, being an automotive application, is handling
load dump transients, which the ap note does not address, nor is the ap note
power supply circuit adequate in this regard.
en.wikipedia.org/wiki/Load_dump
www.ti.com/general/docs/lit/getliterature.tsp
Regards, Dana.