Part Number: TPS61199 Tool/software: Hi
The customer's screen has a set brightness level. When the screen brightness is set to level 0, and the screen is turned off and on again, the screen brightness will be brighter than level 0, but darker than level…
Hi Dongwoo,
You can check which pin is damaged firstly, please use the multimeter diode mode, connect the red probe to GND, and use the black probe to touch each pin of TPS61199.
Theoretically, the good pins will show hundred mV voltage to indicate there…
Part Number: TPS61199 Hey LED Driver team,
I have a customer prototyping with the TPS61199 for a new project and they would like to be able to select different backlight configurations via GPIO and as such would like to use a GPIO to disable unused LED…
Part Number: TPS61199 Hi Team,
Customer have some questions in design and need support team to comment :
If the input frequency of the PWM pin exceeds the range of 100 Hz to 22 kHz defined in the spec such like using 32KHz PWM dimming, will there be…
Part Number: TPS61199 Hi，
When using TPS61199, I found that the actual current did not match the set ISET current, the difference was 5 times.
If the ISET resistance is set to 50mA, the single-string LED current measured with a multimeter is only 10mA…
Part Number: TPS61199 Hi, I am currently using the Design Tool for the TPS61199 LED Backlight Driver and I wanted some clarification how the gain margin gets calculated in the design tool. Usually gain margin is difference between 0dB and the gain where…
Part Number: TPS61199 Hi,
Good Day. On page 16 of the datasheet(TPS61199) , customer see a schematic drawing showing us that two regulated current sink inputs could be connected to each other in order to double the current in the led streams. In his application…
Part Number: TPS61199 Hi there,
I've run into another issue with TPS61199 where one of my ICs regulates at too low of a OUT voltage. The OUT voltage (LED rail) is at 38V instead of an expected ~41V.
I probed the COMP pin and compared to another IC…
Part Number: TPS61199 Hi everyone,
I am writing to you because I have a problem with a new project that I am developing. following the instructions in the datasheet I made my circuit, but I have a problem, the LEDs on my LCD panel are flashing, the inductor…
