DLP4710EVM-LC: VLED MAX current via DLPA3005

Uryyy

Part Number: DLP4710EVM-LC
Other Parts Discussed in Thread: DLPA3005

On GUI, we can set RGB LED current as max12A, 16A and 16A. What is actual currents on DLP4710EVM-LC(DLPA3005) because of DC input 19V/4.74A?

over 4 years ago

0 Kyle Rakos over 4 years ago

TI__Mastermind 20045 points

Hello Uryyy,

The DC input is not the constraint in reaching the maximum LED currents. The LEDs are not all turned on at the same time.

Thanks,

Kyle

0 Uryyy over 4 years ago in reply to Kyle Rakos

Expert 1770 points

Hi Kyle,

If we use 16A power source, can we realize max current spec on DLP4710EVM-LC LED?

Uryyy

0 Uryyy over 4 years ago in reply to Uryyy

Expert 1770 points

Hi Kyle,

I could find SWx_IDAC[9:0] in DLPA3005 registers determine VLED currents. I would like to know the current IDAC values in DLPA3005. How can I find the values or set?

Regards,

Uryyy

0 Kyle Rakos over 4 years ago in reply to Uryyy

TI__Mastermind 20045 points

Hello Uryyy,

Please see the DLPC3439 Software Programmer's guide for the appropriate I2C command to read the DLPA3005 current value. It is command 55h.

You should be able to reach the maximum LED current with the specified input power source. Or are you asking how to power the LEDs externally? If the appropriate input supply specified is used you should be able to nominally hit 12A for red and 16A for green and blue.

Thanks,

Kyle

0 Uryyy over 4 years ago in reply to Kyle Rakos

Expert 1770 points

Hi Kyle,

My asking was "the specified input power source"".

Thank you.

Uryyy

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DLP4710EVM-LC: VLED MAX current via DLPA3005