Search tips
Showing 34 results View by: Thread Post Sort by

  • UCC28C54: Questions regarding the electrical characteristics of UCC28C54

    TI Thinks Resolved
    Part Number: UCC28C54 Could you please tell me the minimum value during circuit operation? I would like to investigate whether there is an increase in the VDD terminal when the current consumption is low. That's what I was asking.

  • UCC28C54: UCC28C54 inquiries

    Part Number: UCC28C54 Hi experts, Good day! My customer is using UCC28C54 in a new solar inverter project and encountering some harware issues. Below waveform is UVLO restart status. VCC capacitor is 100uF, start up resistor is 600k. For VCC drop…

  • UCC28C54: UCC28C54: measured COMP-to-CS offset is ~0.6 V, not 1.15 V typ - is the offset valid at operating V_CS?

    TI Thinks Resolved
    Part Number: UCC28C54 Part: UCC28C54DR Application: auxiliary flyback, DCM, 22 kHz Current sense network: - Rcs = 0.2 ohm (primary side) - Rcsf = 1 kohm series, Ccsf = 150 pF to GND (tau = 150 ns) - R_P not fitted, so no offset injection into…

  • UCC28C54: UCC28C54

    TI Thinks Resolved
    Part Number: UCC28C54 Other Parts Discussed in Thread: UCC28781 , LM5023 , UCC28600 , UCC2801 , UCC28630 Tool/software: I am planning to make 200W SMPS based on QR Flyback topology with Sic Mosfet . So, can you please help me to understand the challenges…
    • Answered

  • UCC28C54: ucc28c54

    Resolved
    Part Number: UCC28C54 Hello, I'm using UCC28C54 with an input voltage of 1000V max. I used a resistors voltage divider so the VDD input voltage is 20V. I'm currently investigating the situation of reverse polarity connection in the HV input. I couldn…
    • Resolved

  • UCC28C54: Operational frequency

    TI Thinks Resolved
    Part Number: UCC28C54 Tool/software: Hi Team, in DS at table 7-1 it seems that the UCC28C54DR can work with a low frequencies as low as 10kHz. in our design we are using 2.2nF and around 70kOhm resistor but when playing around with the resistor values…

  • UCC28C54: UCC28C54 won't start, strange WBDesign

    TI Thinks Resolved
    Part Number: UCC28C54 Hi I used the WEBench designer for an AC/DC design using the UCC28C54, and got the design in the attached PDF. I built it according to the design, but the UCC28C54 does not start. Digging into the details I notice two things…

  • UCC28C54: Spice model not working in Ltspice - Issue with RT/CT pin

    Part Number: UCC28C54 Tool/software: Hello, I made a simple test circuit for UCC28C54 using spice model on the product page, the simulation freezes when Vdd reaches about 6V. However, if I provide a sawtooth on RT/CT pin, simulation works as expected…

  • UCC28C54: Inquiry regarding use case support

    TI Thinks Resolved
    Part Number: UCC28C54 Other Parts Discussed in Thread: UCC28C56EVM-066 Tool/software: Hello, My customer wants to design a product using UCC28C54 that supports the following conditions: 1) Input: 750Vdc 2) Output: 12Vdc/100W Q1. Is it possible to…

  • UCC28C54: flyback solution proposal

    TI Thinks Resolved
    Part Number: UCC28C54 Other Parts Discussed in Thread: UCC28750 , Tool/software: Customer was looking for a flyback solution: Vin= 36V-60V, Vout=24V/3A, 6A overcurrent threshold, with short circuit protection function and input UVLO function(36V) required…

Didn't find what you are looking for? Post a new question.