Part Number: TPS922054 Other Parts Discussed in Thread: TPS922052 Hi Teams,
Regarding the TPS922054 chip, customers have found that the time from power on to stable current is relatively long. Is there any way to adjust the light energy to make the…
Part Number: TPS922054 Tool/software: I designed a circuit for analog dimming with the TPS922054 and now I'm testing it. I use a 1kHz PWM on the ADIM pin and a 48V power supply. It drives 10 LEDs with approximately 3V forward voltage. The maximum target…
Part Number: TPS922054 Tool/software: When I use the TPS922054 in Flexible Dimming mode, I met two problems.
①When I increase the EN/PWM duty cycle, the current on the LED increases.
But according to the manual it states that the current changes according…
Part Number: TPS922054 Tool/software: Hi,
We have designed a LED driver with TPS922054DRRR as shown below . We are facing some issues while bring up . The Fault pin (pin 5 ) is always low while turn on the device and it looks not functioning . Could…
Part Number: TPS922054 Tool/software: Hi Teams,
At present, the customer's actual measured output current with load cannot reach 4A. Please help to investigate the possible reasons and provide any good suggestions. Thank you~ 5125.IRLED-0725.pdf
Part Number: TPS922054
Tool/software:
Hi team,
Could you provide the information about internal pull-up/down of ADIM/HD pin and EN/PWM pin?
It is needed for selection external resistor. Best regards, Goto
Part Number: TPS922054 Tool/software: Hi, I noticed an instability when i use the IC with the following configuration.
PWM: high
Adim: 20kHz ca.10%
Rcomp: 1kohm
Ccomp: 20nF
fset: 1MHz
current max: 3A
see the PDF:
green: ADIM
blue:…
Part Number: TPS922054 Hi,
Q1. There is a reference circuit diagram in the TPS922054 data sheet. In our application, the conditions of 24V → 12V and 4A are exactly the same, so we are considering using the same parts as much as possible. Could you please…
Part Number: TPS922054 Tool/software: Hi TI team,
I'm designing a project that involves TPS922054 to drive LEDs ranging from 0.375A (1 LED - 9W at 24V) to 2.25A (6 LEDs - 54W at 24V). My intention is to use flexible dimming and set the analog pin to…
Part Number: TPS922054 Tool/software: Hi,
I have the following circuit powering a string of LEDs, hooked up to a 3.3V microcontroller. It's fed in 36V, and the nominal Vf of the LED string is around 30V. I have the ADIM/HD pin always high, and the microcontroller…
