Hi Adarsh,
For LP8868Y-Q1, it uses floating buck-boost topology (Boost to Vin). The LED+ is connected to the CSN point and the LED- is connected to the Vin. Therefore, considering the 58V max input voltage, the max SW/CSN/CSP is 58+37.2 >> 65V.
Regarding…
Part Number: LP8868Y-Q1 The current simulation of stop/turn LEDs is coming out a over our LED operating temp max at 85C ambient.
Is there any way we can put an NTC near the LEDs for foldback/derating of the drive current to the LEDs?
Hi Mathanraj,
Mathanraj Pandian said: My doubts regarding How select OVP resistor, which reference voltage setting to the OVP pin, I t depends on Output load??
The threshold is VOVP = 1.2V. Please refer to Table 7-4. Protections in Boost / Buck-Boost…
Part Number: LP8868Y-Q1 Other Parts Discussed in Thread: TPS923655 Tool/software: Hi Team,
Please provide the Web bench model LP8868Q1-Y or V,
The LT spice model isn't available in your website, how to simulate the driver???
Part Number: LP8868Y-Q1 Other Parts Discussed in Thread: TPS923655 Tool/software: How to set a converter in CC and CV , In datasheet your mentioned IN 7.1
"The LP8868-Q1 family is a 4A non-synchronous buck/boost/buck-boost LED drivers with 4.5V to 65V…
Part Number: LP8868Y-Q1 Tool/software: Hello,
I am using LP8868-Q1 in buck-boost configuration and checking the Fault pin status in various fault condition as provided in the datasheet.
Output is configured with 5LEDs (Vftotal:15V) and 1A current…
Hi Marco,
Marco B said: with regards to the UVP, the triggering voltage is 1.2V. The thresold is calculated with the voltage divider (Vin-VLED_series)*Ruvp2/(Ruvp1+Ruvp2), right?
Right. Please consider the Vin_min and VLED_max for calculation, and…
Part Number: LP8868Y-Q1 Hello TI Team,
different handling fault in open LED and short output to gnd let me think about to have same conditions in remaining failure current by using logic from Fault to EN. Fault is pulled up to Vcc and EN is pulled up…
Part Number: LP8868Y-Q1 Hi team,
I understand the RDAMP of LP8868Y is chosen to suppress the overshoot current at rising edge of PWM on when the PWM dimming frequency is high. I would like to know below what dimming frequency, the RDAMP is not needed…
Part Number: LP8868Y-Q1 Tool/software: How do I set the overvoltage protection to 45 volts? Also, could you please give the formula for setting the OVP?
