DLP3010EVM-LC: About current limit control

user6036569

Intellectual 505 points

Part Number: DLP3010EVM-LC
Other Parts Discussed in Thread: DLPA2005

In a circuit based on DLP3010EVM-LC
We are observing the LED current of DLPA2005.

The DLPA2005 data sheet has registers that can control the following current limits:
There seems to be.

What kind of value is set in the current firmware?

And is there a way for the user to set it?

Regards,

Tak

over 3 years ago

0 Austin Snyder over 3 years ago

TI__Genius 12785 points

Hello Tak,

Welcome back to the E2E forum!

Unfortunately, this setting is not currently available. We apologize for the inconvenience.

Regards,

Austin

0 鈴木辰雄 over 3 years ago

Prodigy 105 points

I'm tatsu, the same project member as TAK.

LED OVERSHOOT makes projector image reproducibility NG

Solution
(1)Change the Transient Current Limit register setting of DLPA2005 to eliminate LED OVERSHOOT
(2)Improve LED drive circuit and eliminate LED OVERSHOOT
(3)The LED drive timing and DMD drive timing are shifted,
and projection is not performed at the timing when OVERSHOOT is occurring.

(1)-(3) ALL impossible!!

We have done all the measures.
Please tell me a good idea!!

Regards,

tatsu

0 Philippe Dollo over 3 years ago in reply to 鈴木辰雄

TI__Mastermind 28005 points

Tatsu,

Let me discuss with team to see what other options are available for you. Will get back within a few days.

Regards,

Philippe Dollo

0 鈴木辰雄 over 3 years ago in reply to Philippe Dollo

Prodigy 105 points

Philippe

I came up with the fourth idea
(4)Change LED_SEL_0/1 signal on FPGA to make LED lighting work faster

However, in order to lengthen the lighting time, it will be NG if it is lit multiple times.

Do you have a good idea?



Tatsu

0 Vivek Thakur over 3 years ago in reply to 鈴木辰雄

TI__Mastermind 23070 points

Tatsu-san,

Thank you for your patience. Our team mebr will get back to you early next week.

regards,

Vivek

0 Mayank Khandelwal over 3 years ago in reply to Vivek Thakur

TI__Genius 9971 points

Tatsu-san,

I believe you might have received a custom firmware build from one our team members. I will go ahead and close the thread. Please open it again if you have any questions/concerns.

Regards,

Mayank

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DLP3010EVM-LC: About current limit control