Add LMZ13608

[ottojo]

Add LMZ13608

This adds the symbol for the LMZ13608 Power Module (TI Product Page)
8A DC/DC Buck Converter, 6-36V Input

PR for footprint at KiCad/kicad-footprints#1532.

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• Provide a URL to a datasheet for the symbol(s) you are contributing
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[CLAassistant]

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[myfreescalewebpage]

Hi @ottojo , thanks for contributing,

A few comments I have during my review:

• Description package name should be Texas NDY0011A: 8A Adjustable Step-Down DC/DC Power Module in 15x15mm, Texas NDY0011A is great
• Footprint can be Package_LGA:Texas_NDY0011A according to me and footprint filter should be Texas*NDY0011A*
• Name of pin 9 should be NC
• Number of pin PAD should be 12
• Symbol is too tall compared to other similar devices, proposition below

Cheers,
Joel

[myfreescalewebpage]

Thanks for the fixes, no more comment, just need to wait for the footprint now :)

[evanshultz]

I'm reviewing the footprint. A couple thoughts:

1. Should the ground pin be named AGND? Usually we will copy the datasheet pin names and the main pin name, and the visible pin name, is AGND.
2. Is U the right ref des prefix for a module? https://github.com/KiCad/kicad-symbols/blob/master/Converter_DCDC.lib uses a mixture of U and PS. For what it's worth, IEE 315-1975 shows PS is used for "power supply" and "rectifier (complete power-supply assembly)".

[myfreescalewebpage]

@evanshultz
1- I was wondering about the same think during the review. I have not asked the modification, "AGND" looks strange for me since this is a regulator.
2- Not bad, I have no personal preference. Maybe we need to log an issue to decide about that and parse the whole library to get it consistent with U or PS ?

[evanshultz]

1. That's what the datasheet says...
2. Agreed. Would you mind to start the issue?

[myfreescalewebpage]

1. It's also PGND depending if you consider the PGND to be the main GND pin (see block diagram page 14 of the datasheet)
2. Sure!

[myfreescalewebpage]

Issue about references at #1727

[myfreescalewebpage]

@ottojo ok for this proposition separating the ground pins.
Waiting for the footprint before merging.
Joel

[myfreescalewebpage]

@ottojo footprint has been merged but you need to change the footprint here (footprint library has changed).
Joel

[myfreescalewebpage]

Thanks, merging.