Part Number: TPS92511 The datasheet states that "larger tolerances should be expected for lower ILED... (< 150mA!).."
Can you give any calculation base or test data about the degradation of tolerance for ILED=100mA?
Theoretically the device can support…
Part Number: TPS92511 Hi TI expert~
I have been using TPS92511 .
It is supposed to drive the load of 71mA constant current. (@Vin:40V, VLED:36V, R IADJ :21kohm)
However, after several seconds, the output current decreases on several board. (71mA…
Part Number: TPS92511 Other Parts Discussed in Thread: LM3445 , LM3444 , LM3414HV Hi E2E,
Good day!
Can we set the LED current of this part lower than 150mA, specifically 40mA?
Best regards,
Franz
Part Number: TPS92511 hi,
in section "7.3.10 PWM Dimming Control" it is mentioned a typ. 40-90uA current related to the internal pull-up on DIM pin.
What is min/max spread? We want to add a pull-down to keep device off while MCU boots, but can't say…
Part Number: TPS92511 Hi,
I have used TPS92511 for Driving two 3V LEDs at 350mA.
The Operating frequency was set as 300kHz using 33.2kHz Resistor
inductor used was 68uH.
The Switching waveforms at the LX pin doesn't seems to be perfect. There…
Part Number: TPS92511 Hello guys,
One of my customer considering using TPS92511 for their net products too.
They want to know how many LED in series can be by TPS92511 drive with 60V input and 500mA current?
Could you please give me your reply?…
Part Number: TPS92511 Other Parts Discussed in Thread: TPS92515 I think that calculation method for TPS92511 power dissipation is below, is it correct?
・Psw = 1/2 (Vin × Iout × fsw × (Trise + Tfall))
・Pcond = Iout^2 × RLX × Duty
・Pdrive = Qg × Vin…
Part Number: TPS92511 Please let me know about equation of power dissipation for TPS92511.
By the way;
I found "estimated from the efficiency curves of Figure 13)" on datasheet P22,
but I didn't understand and figure 13 is not mean efficiency curve…
Part Number: TPS92511 Other Parts Discussed in Thread: LM3405A , TPS92513 Hi
We have following design requirement.
VIN:12V
VLED: 2.2V
RFS:3.3K
RIADJ : 4.3K (0.35A as led current)
L : 200uH
These specification will offer Iripple = 0…
