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Jsauce9412
Level 1
Level 1
First reply posted 5 sign-ins First question asked

We are sending inquiries regarding TLD6098-1EP IC PWM DUTY 

We are trying to apply in Daytime Running Lamp, Position Lamp.

 

1) Is it possible to control the  PWM duty cycle 5% in the IC to satisfy the LED minimum guaranteed current?

2) Due to low dimming control such as Analog Dimming (SET) PIN 30% control and PWM DUTY 5% control
Can output current error and flicker occur?

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1 Solution
AliAsgar
Moderator
Moderator
Moderator
1000 replies posted 250 solutions authored 750 replies posted

Hi,

Regarding the flickering, I assume you are talking about instability that could trigger the light flickering. Usually if the PWM frequency is higher than 50Hz then it is not visible.

  • 5% is achievable if a PMOS is used as dimming element.
  • The flickering depends on stability. If a proper compensation network is chosen, then there shouldnt be a problem.

Please check the TLD6098-12B_EVAL evaluation kit and check the stability with DC-DC designer tool

Best Regards,
AliAsgar

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1 Reply
AliAsgar
Moderator
Moderator
Moderator
1000 replies posted 250 solutions authored 750 replies posted

Hi,

Regarding the flickering, I assume you are talking about instability that could trigger the light flickering. Usually if the PWM frequency is higher than 50Hz then it is not visible.

  • 5% is achievable if a PMOS is used as dimming element.
  • The flickering depends on stability. If a proper compensation network is chosen, then there shouldnt be a problem.

Please check the TLD6098-12B_EVAL evaluation kit and check the stability with DC-DC designer tool

Best Regards,
AliAsgar