work in progress TLE6244

Hardware inside and outside of the ECU
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russian
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TLE6244

Post by russian » Mon May 26, 2014 10:15 pm

That's another of these MQFP64 low side drivers. This one has a detailed datasheet (attached)

https://svn.code.sf.net/p/rusefi/code/t ... t_TLE6244/
Breakout_TLE6244_schematic.pdf

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18 channels total with direct control of 16 channels. About $2.5 @ Qty 10!

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TLE6244_datasheet.pdf
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Re: TLE6244

Post by kb1gtt » Mon May 26, 2014 11:51 pm

If no one else takes the challenge to make this a KICAD, ping me once I get through the one I'm on. Me likes this chip.
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Re: TLE6244

Post by russian » Sun Oct 12, 2014 5:22 pm

10 pieces have arrived:
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Re: TLE6244

Post by DaWaN » Tue Oct 14, 2014 9:58 am

Nice!

Creating a KiCAD footprint / board for these chips is on my to-do list (I will not forget it), but time has been a bit sparse in the last two weeks.

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Re: TLE6244

Post by russian » Sun Dec 14, 2014 1:40 pm

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Jared, it's a beauty!

First post has the SVN link and schematics, need some review before I order it.
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Re: TLE6244

Post by kb1gtt » Sun Dec 14, 2014 2:47 pm

I'm concerned about it thermally. Those are some high Rds values. Based on Rds only I get the below graphic if everything is on.

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The datahseet notes an Rth of 2 to 5, which is way high for that slug, so they must be recommending the attached heat sink be below 2 to 5 C/W. The spread sheet used the 5C/W, however I have no idea what we an achieve so it's something we'll need to pay close attention to. Either that or we'll have to keep the ambient below -5C :)
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Re: TLE6244

Post by russian » Sun Dec 14, 2014 3:02 pm

I know places with ambient below -5.

I guess the fact that duty cycle on some of these channels is only about 10% help a bit?
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Re: TLE6244

Post by kb1gtt » Sun Dec 14, 2014 3:16 pm

Yes duty cycle and not using all channels can help quite a bit. I'd like to design the thermal such that you can run 100% if possible, such that it become one less item to worry about.
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Re: TLE6244

Post by pobedyst » Tue Apr 10, 2018 8:00 am

I have just recently renovated the control unit MED17.5, where just 6244 chip is used in the control channel of the low-pressure fuel pump. The failure of this chip is not uncommon for these control units, so I can only say that its use can cause some problems. But I'm not sure, because in the MED17.5 chip is used from the manufacturer BOSCH, its denomination is 30620, I do not know this analogue or BOSH simply orders with its marking data chips. I have not found, and it is unlikely to find a datasheet course 30620. Does anyone know what information is about how BOSCH uses its chips - are they complete analogues or for BOSCH specifically produce individual chips? Or is it the same thing?

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