Search tips
Showing 92 results View by: Thread Post Sort by

  • UCC28750: wrong equation of Cbulk given in the datasheet

    TI Thinks Resolved
    Part Number: UCC28750 Other Parts Discussed in Thread: UCC28740 Tool/software: Equation for Cbulk in the datasheet of UCC28750 seems wrong because there should be a frequency term in the denominator to cancel out the units and get answer in faraday. …

  • UCC28750: Ripples on FLT input

    Part Number: UCC28750 Tool/software: Hello, I want to replace a FAN6602 with a UCC287502 on a 300W 24Vdc flyback power supply. The primary voltage is supplied by a PFC, and the controller supply voltage is provided by another small auxiliary flyback.…

  • UCC28750: Poor SMPS Load Regulation

    Part Number: UCC28750 Other Parts Discussed in Thread: , TL431 Tool/software: We are seeking assistance with a Flyback SMPS design using the UCC28750 controller. The design was based on the UCC28750EVM-071 User Guide and the UCC28750 Datasheet. Issue…
    • Answered

  • UCC28750: Overvoltage protection not working

    Resolved
    Part Number: UCC28750 Tool/software: Hi, Im using UCC287506 Power management IC. Im planning to have an Overvoltage protection above 400 Volts. I have connected the circuit as below. However at The fault pin of the IC im reading only 2.5 volts across…
    • Resolved

  • UCC28750: We are required Input over voltage protection above 300VAC how to connect flt pin in schematic. through auxilary or Input bulk capacitor. please suggest me.

    Part Number: UCC28750 Tool/software:

  • UCC28750: Options for 1500Vin DC-DC Converter

    TI Thinks Resolved
    Part Number: UCC28750 Tool/software: I am working on a DC-DC converter design with following specs: Vin = 1500Vdc (coming from battery pack) Vout = 24V Iout = 2.5A (could be higher as requirements are revised) 8kV isolation is needed. Different topologies…

  • UCC28750: Design Clarifications

    TI Thinks Resolved
    Part Number: UCC28750 Other Parts Discussed in Thread: TINA-TI , UCC28700 , , TLV431 , TL431 Tool/software: Hi, We needed some design clarifications for UCC28750 as below, 1) Feedback Options:- The reference design for feedback consists of an optocoupler…

  • UCC28750: Disabling OPP Feature

    TI Thinks Resolved
    Part Number: UCC28750 Tool/software: I am looking at the UCC28750 as a replacement controller to design into an existing flyback design, this is a power supply for a class D amplifier. it looks like a good candidate. I do however have one problem, we…

  • UCC28750: Going to some kind of protection while turning on at full load at 230VAC input.

    Part Number: UCC28750 Tool/software: Hi, I am working on a 125W AC-DC PSU using ucc287506 controller. where input is universal from 90VAC to 264VAC Output is 24V / 5.2A DC Find the Schematic in the attachment. 4075.Schematics.zip There are…

  • UCC28750: From where to find Gain information to enter in Power Stage design for Compensator design

    TI Thinks Resolved
    Part Number: UCC28750 Tool/software: Hi Team, I am trying to design the Feedback compensator RC component values using TI POWER STAGE DESIGNER. I am not able to understand from where to find the Gain information which is needed to be entered in the…

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