DLPC4422: How to make DLPC4422EVM support 4-way actuator

Hi Jia,

Glad to see Wintech developing with the new DLP780TE. The team is looking at the best way to share the 4-way info. I will follow up with them tomorrow. 

Regards,

Matt

Hi Matt

Glad to See You Again

Discuss the control  mode of  XPR and number of channels

A. DAC mode or PWM mode

B. 2-Way or 4-Way

Who is using  DAC mode

A. DLPC4422EVM + DLP660TEEVM is using DAC mode and 2-Way 

B. DLPC4422EVM + DLP470TEEVM is using DAC mode and 4-Way (but DLPC4422EVM has no 4-way driver)

C. DLPC6421 + DLP470TP is using DAC mode and 4-way

Who is using PWM mode

A. DLPC7540EVM + DLP471TEEVM/DLP650TEEVM are using PWM mode and 4-Way

Does Actuator support DAC mode or PWM mode or both

A. miniAik .47/ .48/ .65/ .78 actuators all support DAC mode and PWM mode , params are saved in the actuator MCU

B. Optotune both XPR-20 and XPR-33 support DAC mode and PWM mode

So I want to know which  control mode will be used in the DLPC4420/DLPC4422 + DLP780TE solution

and

I want to modify DLPC4422EVM or our DLPC4422 main board to add 4-way driver 

and

must make sure composer project firmware can be run on the hardware platform

Thank you for any help

Best Regards

Jia

Hi Aaron and Matt

I know that Software supports 4-way XPR . Both FPGA and DLPC4420/DLPC4422 support 4-Way XPR

But DLPC4422EVM Hardware supports only 2-way not 4-way

First: DLPC4422EVM  XPR SH

A . ADC mode

B . only one channel

C . support for DLP660TE 

D . We have designed DLP660TE  device

https://www.ti.com/tool/WDST-3P-PRO6600

Second: DLPC4422 Software

A . Hardware = DLPC4422EVM + DLP660TE, "is 2XPR" is clicked. and the 2-way current driver signal is output from J43 (it is mode we are using in our DLP660TE device)

B . Hardware = DLPC4422EVM + DLP470TE, "is 2XPR" is not clicked. because it is using 4-way XPR

My qestion is where the 4-way XPR driver signals output, J42 yes or no

and

4-way driver is using 2 channel DAC mode or 2 channel PWM mode

How can I connect miniAik or Optotune Actuator to DLPC4422EVM

Or I need to design a New Actuator driver board

ultimate purpose：

Connect miniAik and Optotune Actuators to DLPC4422/DLPC4420EVM like DLPC7540EVM on which The 4-way PWM mode  driver circuit is integrated 

Or

How can I  make DLPC4422EVM+DLP470TE + miniAik 4-way actuator work OK

I think that there are the same need to the DLPC4420+DLP 780TE + 4-way

Guess:

A . 4-way driver signals output from J42

B . have to design PWM or DAC actuator driver circuit additionally

C . Both DLPC4420+DLP780TE and DLPC4422+DLP470TE will use the same Actuator driver circuit

I need to verify the functionality of DLP780TE as soon as possible on the DLPC4422 hardware platform this we have mass produced

Thank you for any help

Best Regards

Jia

Hello Jia,

It sounds like you might have a 1st Gen of DLPC4422 and DLP660TE, if this is the case you will need a 2nd Gen of DLPC4422.- purchasable on ti.com.

1. Our 2-way and 4-way designs are too different that we do not have updates documented.

2. Did the miniAik and Optotune Actuators come with driver boards or do you need a comparison to design your own driver board?

Best,

Aaron B

Hi Aaron

I am a systems engineer from Wintech inc

Mainly responsible for the products of the ECD department

https://www.ti.com/tool/WDST-3P-PRO6600

We released PRO6600 product at 2019 which referring to TI's DLPC4422 + DLP660TE solution

We designed DLPC4422 hardware referring to DLPC4422EVM  at 2017

May it is 1st Gen of DLPC4422

Now the hardware design downloaded from TI is 1st Gen not the latest 2nd

https://www.ti.com/tool/DLPLCRDC4422EVM

1. Our 2-way and 4-way designs are too different that we do not have updates documented.

A: Can you share the 2nd Gen of DLPC4422 docs with me, especially the hardware design

2. Did the miniAik and Optotune Actuators come with driver boards or do you need a comparison to design your own driver board?

A: we have no any Actuator driver boards except DLPC4422EVM and actuators

B: we really need an actuator driver board to connect DLCP4422EVM to actuator

C: Can you share me the Actuator driver board (hardware design is OK) which can be connected to DLPC4422EVM

Thank you

Best Regards

Jia

Hi Aaron

Now We use 2-way Actuator in the PRO6600 device (TI gave the suggestion at 2017)

DLP660TE must use 2-way actuator 

so DLPC4422EVM only integrates 2-way driver

But both DLP470TE and DLP780TE need 4-way actuator and DLPC4422EVM have no 4-way actuator driver

How can miniAik 4-way actuator be connected to DLPC4422EVM (or our DLPC4422 main board)

mayby a actuator is needed 

Please give me some informations

Thank you

Best Regards

Jia

Hi Aaron

I know that the signals of 4-way Actuator is output from XPR Alter FPGA 

The connector of the J54 , J55 and J56 are the 4-way Actuator interface

I read AllinOne source V09.00.00 of DLPC442X 

I find Actuator configs are sent to FPGA through IIC 

'Image Deleted'

And I know that the standalone board is connected to between DLPC4422EVM and Actuator

Can you share me the hardware design of actuator standalone board

Is correct to my guess ?

Thank you for you help

Best Regards

Jia

Hi Jia,

Let us look into your question and reply on Monday. We have a holiday today and most people are taking a much-deserved rest.

Regards,

Matt