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Automotive LED driver solution

Jimmy Gong
Expert 3600 points
Other Parts Discussed in Thread: TPS92643-Q1

Hi team,

Do we have automotive LED driver can meet spec:

1. Vin: 7~10V(come from PoC)

2. Vout will connect 2 string IR LED (Vf: 6V, drive current: 2A)

3. PWM dimming, PWM dimming frequency 33.33ms(30Hz), on time 2ms, off time 31.33ms

I have found LP8868-Q1 and tps92643-Q1. LP8868-Q1 can't meet PWM dimming frequency 33.33ms(30Hz), on time 2ms, off time 31.33ms and tps92643-Q1 only has buck topology can't boost voltage from Vin 7~10V to 2 string IR LED 12V. do you have any recommendation for this situation? thanks.

BR,

Jimmy