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TPS92682-Q1 Based LED design

Other Parts Discussed in Thread: TPS92682-Q1, TPS92692

Hi TI,

Requirement:

Design HB LED 3 LED of 1A each with 300lm/LED

Design LB LED 4 LED of 1A each with 350lm/LED.

  • Number of LEDs         : 4 LEDs for Low-Beam; 3 LEDs for High-Beam (1-1-1 or 1-2-1 configuration)
  • Total LED flux for low beam             = 1400 lm(350 lm/LED) (Osram KW.CELNM2 LEDs are considered for simulation)
  • Total LED flux for high beam           = 900 lm(300 lm/LED)
  • Output current                                    = 0.75A to 1.5A each LED
  • Total current(LB)                              = 4 To 6A
  • Total current(HB)                              = 3 to 4.5A

1. Based on the above requirement I have selected TPS92682-Q1 which has two channels to drive the HB and LB LED in each channel separately. Please whether i can drive them separately these two LED strings without any Microcontroller requirement ? and

2. do they have brightness control technique like reducing the current reduce the Lumens accordingly, i.e whenever the If>Ith LED will start glowing with lesser lumens to maximum when it reaches its maximum LED current.?

Thanks

Please confirm on this