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  • UC1843-SP: Comparison Space grade PWM Controllers

    TI Thinks Resolved
    Part Number: UC1843-SP Other Parts Discussed in Thread: UC1845 , UC1843 , , UC1845-SP Hi Sir, I wanted to use space grade PWM controller for forward converter with current mode control. There are many space grade ICs available like: UC1843, UC1845…

  • RE: UCC28C45-EP: Oscillator Frequency Equation

    Hey Kyle, This part is very similar to the UC1845 and the equation for the UC1845 the output frequency is: fo = 1.72/(Rt*Ct) Where Rt is in Ohms Ct is in Farads and f is in Hz. I checked it with the frequency graph we provide in the UCC28C45…
    • Answered

  • RE: UC2845: The same series with UC2845D8TR up to 105 ℃

    Resolved
    Hi Xing, The UC1845 is rated to the higher temperature but does not come in the same package. The UCC28C45 is rated to 105C and is pin to pin compatible, Regards Peter

  • Switching Controller for Current Limiting

    Other Parts Discussed in Thread: UC1845 Hello, I am looking into using a UC1845 as a current limiter for an upstream voltage source. The concern is that during normal operation, when current is below the setpoint, the PWM will be set to 100% and the…
    • Answered

  • UC1845A-SP: LCCC (FK) 20 Package Drawings Missing!

    Resolved
    Part Number: UC1845A-SP Hi, Please provide detailed package drawing for the LCCC-20 quickly, and as a .pdf (not autocad). Part # 5962-8670408VXA (uc1845alqmlv), LDC 1915A. The datasheet for the UC1845A-SP does NOT have the LCCC-20 (FK) package drawing…
    • Resolved

  • WEBENCH® Tools/UC1845A-SP: Design a non-isolated boost converter with WEBENCH

    TI Thinks Resolved
    Part Number: UC1845A-SP Other Parts Discussed in Thread: UC1845A , UC1845 , UC1843A-SP , UC1843A Tool/software: WEBENCH® Design Tools Hi everybody, I'd like to design a rad-hard non-isolated DC-DC boost converter using the TI UC1845A-SP PWM controller…

  • RE: UCC28631 Latched Fault mode

    Bernard, Thanks, Too many unknowns with this chip for my application. Sounds like it was targeted at HV off line applications and if one deviates from that recipe, then all bets are off. Falling back to a tried and true fixed frequency UC1845 with…
    • Answered

  • [FAQ] Looking for blank or dummy ceramic packages for mechanical samples. Are any available?

    Resolved
    Other Parts Discussed in Thread: MKT-WG16A-MS , MKT-WG10A-MS , SN0020HKH , SN0010HKU , TPS7H1111-SP , TPS7H4011-SP , TPS7H6003-SP , SN00020FK Looking for mechanical package samples for trim and form setup Answer: For our Space Power Ceramic QMLV qualified…
    • Resolved
    • Answered

  • RE: UCC2806: sync with current ramp?

    Resolved
    Hello Harel, Yes, you will see a voltage ramp in CT when you connect 5V to RT. These two app notes have the best information on GPPWM SYNC. Even though the devices mentioned are not the UCC2806, the CT pin behaviors will be similar. In particular, pages…
    • Answered

  • RE: TPSM846C24: IS TPSM846C24MOLR the material in a special process or is it specially designed to withstand radiation?

    Resolved
    Hi Jenny, As far as I know, TPSM846C24 module is not specifically manufactured to withstand radiation. You may find some SEE TI products here: e2e.ti.com/.../slyt532g.pdf

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