Search tips
Showing 1,127 results View by: Thread Post Sort by
    Answered

  • UCC28070: Using the UCC28070 with AC/DC input

    Resolved
    Part Number: UCC28070 Hello everyone, We are starting a new design for a 2 kW, 24 VDC power supply that must accept both AC and DC inputs . The main requirements are: AC input: 90 VAC to 264 VAC DC input: 150 VDC to 380 VDC Output: 24 VDC…
    • Resolved

  • UCC28070: UCC28070: Possibility of Constant Current Control Using IMO Pin or Similar Mechanisms

    Part Number: UCC28070 Hi team, Purpose: To confirm whether constant current control can be implemented with UCC28070. Background / Setup: Device: UCC28070 Considering the use of the IMO pin or similar functions. Issue / Question: Can…

  • UCC28070: UCC28070 Sync Function and Rdmx Resistor

    Part Number: UCC28070 Hello, I'm attempting operation using a sync pulse to lock operation between multiple converters. I'm generating a 400kHz pulse with a 1us on time (40% duty cycle) to achieve a 200kHz Fpwm. My converter successfully operates…

  • UCC28070: UCC28070 Semi-Bridgeless PFC Achieves Output Regulation but Poor PFC Below 200

    Part Number: UCC28070 Hello, I am working on a semi-bridgeless PFC converter using the UCC28070 controller. The converter is able to regulate the DC output voltage to 390 V across the input range, including at lower input voltages such as 180 VAC. …

  • UCC28070: UCC28070 VSENSE pin absolute maximum rating (7 V)

    Part Number: UCC28070 Hi, Regarding UCC28070, the VSENSE pin absolute maximum rating is specified as 7 V. Could you please advise: - Is there any additional robustness or margin information beyond the 7 V abs max rating? - Does the VSENSE pin have any…

  • UCC28070: UCC28070 OVP triggered during power stage transition (LLC to Inverter)

    Part Number: UCC28070 Description: I am designing a 3kW power system: UCC28070 (PFC) -> LLC -> DC/AC Inverter . Issue: The UCC28070 triggers its internal Over Voltage Protection (OVP) at 1.06x when the downstream Inverter operates at output frequencies…
    • Answered

  • UCC28070: UCC28070 for LED power supply: Can the VAO or IMO pin be used for constant-current or constant-power control?

    Resolved
    Part Number: UCC28070 Hi team, I would like to use UCC28070 for an LED power-supply application, and I would like to confirm whether constant-current control can be implemented by adjusting the VAO pin, the IMO pin, or a similar control method.…
    • Resolved

  • UCC28070: Feasibility of 3-channel interleaved boost converter using UCC28070 with 120-degree phase shift via TL594

    TI Thinks Resolved
    Part Number: UCC28070 Other Parts Discussed in Thread: TL594 I am exploring a system configuration for a 3-channel interleaved boost converter with a DC input. My plan is to use UCC28070 controllers and synchronize them using a TL594 to achieve a 120…

  • UCC28070: Could you pls help review the Sch for UCC28070?Thanks.

    Part Number: UCC28070 Dears, My customer want to use UCC28070 for 2.6KW PFC project,could you pls help review the sch? Thanks. Input:190-264VAC output:400V/6.5A Switching Frequency:100Khz

  • UCC28070: UCC28070 operation question

    TI Thinks Resolved
    Part Number: UCC28070 Other Parts Discussed in Thread: UCC28064A , , UCC28064 Tool/software: Hello expert, Could UCC28070(CCM) and UCC28064A(CrM) externally apply High VDC input (100Vdc-300Vdc) then Boost to Bulk cap. for working normally? Its VINAC…

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