TPS61500: Does TPS 61500 Support from Dynamic Output current changes

Napa Karthikeya Prasad

Part Number: TPS61500

Tool/software:

Hii Team,

We are Integrating OPT 3004 Light Sensor from TI with TPS 61500 LED Driver IC for Night Vision Camera, Based out the Light Intensity, Can we change the current through LED Dynamically ?

Regards,

Karthik

3 months ago

0 Suchen Dong 2 months ago

TI__Expert 3151 points

Hi Napa,

Our expert will reply to you later. Thanks for your patience.

0 Napa Karthikeya Prasad 2 months ago in reply to Suchen Dong

Prodigy 115 points

Hii Suchen,

Awaiting!!!

0 Hongjia-Wu 2 months ago in reply to Napa Karthikeya Prasad

TI__Expert 6680 points

Hi Karthik,

Yes the device supports analog and pure PWM dimming methods for LED brightness control. Connecting a capacitor to the DIMC pin configures the device to be used for analog dimming, and the LED current varies proportional to the duty cycle of an external PWM signal. Floating the DIMC pin configures the device for pure PWM dimming with the average LED current being the PWM signal's duty cycle times a set LED current.

Regards,

Hongjia

0 Napa Karthikeya Prasad 2 months ago in reply to Hongjia-Wu

Prodigy 115 points

Hii Hongjia-Wu,

Thanks for responding on this!!

Ca you provide calibrated data for duty cycle of an external PWM signal.Vs LED Current?

Regards,

Karthik

0 Hongjia-Wu 2 months ago in reply to Napa Karthikeya Prasad

TI__Expert 6680 points

Hi Karthik,

You can refer to DS Page11 to get the relationship of the PWM duty cycle and LED current.

Regards,

Hongjia

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TPS61500: Does TPS 61500 Support from Dynamic Output current changes