L9788 - multifunction IC for automotive engine management system

Hardware inside and outside of the ECU
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L9788 - multifunction IC for automotive engine management system

Post by Dron_Gus » Wed Sep 04, 2019 10:46 am

L9788 is something like TLE8888 but with 6 channels pre-drivers of ignitor drivers. While only 4 low-side injector channels.

I'm looking for TLE8888-like chip for 6 cylinder motor. Want some integrated solution... but all-in-one solutions are up to 4 cylinders.

Was someone able to get full manual for this chip?

May be someone can point me 6-ch ignitor pre-driver chip? Something like MC33810 or Bosch CK240 but with 6 channel.

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Re: L9788 - multifunction IC for automotive engine management system

Post by Ahmad » Wed Sep 11, 2019 3:20 pm

I like too for 8 cylinders.
L9788 is in standardization phase and not ready for use.
I want to use tow L9779WD-SPI now.
For 6-ch ignitor pre-driver, you can use Bosch CK110.
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CK110_Product_Info.pdf
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Last edited by Ahmad on Thu Sep 12, 2019 12:08 pm, edited 1 time in total.

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Re: L9788 - multifunction IC for automotive engine management system

Post by russian » Thu Sep 12, 2019 1:37 am

Ahmad wrote:
Wed Sep 11, 2019 3:20 pm
For 6-ch ignitor pre-driver, you can use Bosch CK110.
Where would you buy qty 25 of CK110? Do you have a datasheet?
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Re: L9788 - multifunction IC for automotive engine management system

Post by Dron_Gus » Thu Sep 12, 2019 8:19 am

Ahmad wrote:
Wed Sep 11, 2019 3:20 pm
I like too for 8 cylinder.
L9788 is in standardization phase and not ready for use.
I want to use tow L9779WD-SPI now.
For 6-ch ignitor pre-driver, you can use Bosch CK110.
For 8 cylinder you can use 2 x MC33810. Each has 4 x ignition pre-driver + 4 x injector driver. And a loooot of diagnostic and protection features.

Seems I'm going to use 2 x MC33810 for 6 cyl.

L9779WD-SPI is quite similar to TLE8888.

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Re: L9788 - multifunction IC for automotive engine management system

Post by Ahmad » Thu Sep 12, 2019 8:24 am

Bosch 30397 = Bosch CK110
I read above datasheet and seems It has simple 16bit SPI function for diag.

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Re: L9788 - multifunction IC for automotive engine management system

Post by Ahmad » Thu Sep 12, 2019 8:31 am

Dron_Gus wrote:
Thu Sep 12, 2019 8:19 am
For 8 cylinder you can use 2 x MC33810. Each has 4 x ignition pre-driver + 4 x injector driver. And a loooot of diagnostic and protection features.

Seems I'm going to use 2 x MC33810 for 6 cyl.

L9779WD-SPI is quite similar to TLE8888.
L9779WD-SPI has other feathers (SEO, Carnk, CAN, Stepper, ...)

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Re: L9788 - multifunction IC for automotive engine management system

Post by Dron_Gus » Thu Sep 12, 2019 8:40 am

Ahmad wrote:
Thu Sep 12, 2019 8:31 am
L9779WD-SPI has other feather (SEO, Carnk, CAN, Stepper, ...)
8888 also has CAN.
And 4 x push-pulls (half-bridges) that can be used for stepper.
Not sure about SEO and Crank.

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Re: L9788 - multifunction IC for automotive engine management system

Post by Ahmad » Thu Sep 12, 2019 8:54 am

TLE8888 and L9779 are about identical. My limitation is availability in local stores.

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Re: L9788 - multifunction IC for automotive engine management system

Post by russian » Thu Sep 12, 2019 11:00 am

Ahmad wrote:
Thu Sep 12, 2019 8:24 am
Bosch 30397 = Bosch CK110
I read above datasheet and seems It has simple 16bit SPI function for diag.
you are making a mistake. 16 page product info is not a datasheet, datasheet for such chip wojld be about 100 pages, see tle8888 datasheet as example
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Re: L9788 - multifunction IC for automotive engine management system

Post by Ahmad » Thu Sep 12, 2019 11:49 am

You are true Andrey. That file is not a complete datasheet. But CK110 is not Engine Management device same as TLE8888. It seems to be a simple IGBT driver with some diagnostic.

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