Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.
Part Number: UC2854 Tool/software: I am using a 3300pF capacitor for Ct and a 2.8kohm resistor for Rset. The measured frequency is ~101kHz but the calculated frequency is ~135kHz (F = 1.25/(Rset x Ct)). Why is there such a large discrepancy? The resistor…
Part Number: UCC2818-EP Other Parts Discussed in Thread: UC2854B-EP , UC2854 , UCC2818 Tool/software: Hi TI team
I would like to know which among these PFC ICs (UCC2818-EP and UC2854-EP) can have <5%THD on the input current for input frequency of 360Hz…
Part Number: UCC2817 Other Parts Discussed in Thread: UC2854 , UC2854A Hello. I would like to know if UCC2817 can be used as a direct replacement for UC2854, only with accessory RLC component changes?
I have an application that uses the UC2854A to drive…
Part Number: UC2854 Dear Team,
I would like to know what will be the Multiplier output voltage when Vff is above 4.5 V. Does it will go to zero nor clamped at any particular voltage.
Thanks and Regards
D Arun Kumar
Part Number: UC2854 Dear all,
Our customer is trying to measure the leakage current between 16pin (GTDRV) and 1pin (GND).
Do you measure the leakage current between pin 1 and pin 16 when you evaluate the product?
If you are measuring, I would like you…
Part Number: UCC2818-EP Other Parts Discussed in Thread: UCC2818 , UC2854 Tool/software: Hi TI team,
I have following requirements
Input voltage -100Vrms to 134Vrms
Frequency- 360Hz to 800Hz
output voltage- 400V
output power 100W
I am planning to UCC2818…
Part Number: UC2854 Other Parts Discussed in Thread: TINA-TI , , UCC28180 , UCC28056 Tool/software: TINA-TI or Spice Models Hello,
I'm looking for a spice model for the UC2854 , as it is missing on TI.com.
TINA-TI or PSpice or LTspice would be ok.
Thank…
Part Number: UC2854 Hi team,
My customer has a question on the oscillator frequency.
In the datasheet, there is a min/max value that is given at T=[-40;+85degC].
Do we have a min/max value only at 25degC?
Thanks in advance for your feedback.
Pol
Part Number: UC2854 Hello E2E,
I am looking for some clarity. It was noticed in an older datasheet (2008) that the absolute max junction temp was 150C. In the newest datasheet lists the 150C as a max storage temp and a 85C recommended operating but no…
Hello,
The way the UCC28065 PFC controller is designed, it can operate long term with one one phase (channel, output) running and the other one not running, however, it always drives both phases at start-up to avoid the risk of CCM in the inductor. This…
