DLPA2005: using DLPA2005 without driving any LEDs

Kivanc Hedili

Part Number: DLPA2005
Other Parts Discussed in Thread: DLP2010NIR, , DLPC150, DLP2010

Hi, we are developing an optical system using DLP2010NIR where no light source is necessary. In this case can we disconnect all the LED driver related pins like AFE, RGB strobe decoder, VLED buck-boost? Is there a guide for using DLPA2005 to drive the DMD chip only?

Thanks,

Kivanc

over 3 years ago

0 Philippe Dollo over 3 years ago

TI__Mastermind 28005 points

Kivanc,

Do you mean to drive the system without LEDs connected? Or are you looling to drive the LEDs externally?

Regards,

Philippe Dollo

0 Kivanc Hedili over 3 years ago in reply to Philippe Dollo

Prodigy 230 points

Hi Philippe,

There are no LEDs or other light sources in our system, all we need is to display a pattern on the DMD.

Best regards,

Kivanc

0 Anas Gasser over 3 years ago in reply to Kivanc Hedili

Intellectual 375 points

Hi,

I am developing an application that does not require any light source as well. For that, I replaced the three LEDs with similar diodes. But if it is possible to somehow shut the RGB STROBE DECODER and VLED BUCK-BOOST, it will be great to save some power. I am interested in TI's reply on this too.

Kind regards,

Anas

0 Vivek Thakur over 3 years ago in reply to Anas Gasser

TI__Mastermind 22830 points

Hello Anas,

Thank you for your patience. Which controller are you using?

Could you please also share more details about your application?

regards,

Vivek

0 Anas Gasser over 3 years ago in reply to Vivek Thakur

Intellectual 375 points

Hello Vivek,

Many thanks for your reply!

I am using DLPC150. I am trying to use the DLP2010 as a building block in a fluorescence time-resolved spectromter system. Hence, no need for the LED control from DLPA2005.

Kind regards,

Anas

0 Vivek Thakur over 3 years ago in reply to Anas Gasser

TI__Mastermind 22830 points

Hello Anas,

I will look int to this and get back before end of the week.

regards,

Vivek

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

TI__Mastermind 22830 points

Hello Anas,

We reviewed your requirement. Unfortunately, this feature or functionality is NOT supported on DLCP150.

Regards,

VIvek

0 Anas Gasser over 3 years ago in reply to Vivek Thakur

Intellectual 375 points

Hello Vevik,

Many thanks for your effort. Just to double check, it is supported, right?

Kind regards,

Anas

0 Vivek Thakur over 3 years ago in reply to Anas Gasser

TI__Mastermind 22830 points

Hello Anas,

Thank you for clarification. I am sorry. I made a typo mistake. It is NOT supported. I have edited the previous post.

regards,

Vivek

0 Anas Gasser over 3 years ago in reply to Vivek Thakur

Intellectual 375 points

Hello Vivek,

Many thanks for the reply and the correction.

I got a little bit confused when I also had a look at the schematics of the DLP NIRnanoscan. In the reference design, the DLPA2005 has no connection at VLED1 and VLED2. However, the used controller is DLPC150 as well. Can't I just follow that design?

Thanks in advance!

Kind regards,

Anas

0 Vivek Thakur over 3 years ago in reply to Anas Gasser

TI__Mastermind 22830 points

Hello Anas,

It is reference design for Spectroscopy scanning application. Please use this reference design.

In this application, there should not be any LED load. VLED feature is mainly for projection application where you are driving LED from DLPA2005.

regards,

Vivek

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DLPA2005: using DLPA2005 without driving any LEDs