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  • UC1845A-SP: Error Amplifier

    Resolved
    Part Number: UC1845A-SP Other Parts Discussed in Thread: UC1845A Tool/software: Hi Folks Is the Error Amplifier biased to 5V like shown in Figure 17 or is it 2.5V shown in the functional block diagram? Best Regards Rolf
    • Resolved

  • UC1845A-SP: Design Guide / Simulation

    Part Number: UC1845A-SP Tool/software: Dear Support Do you provide a spreadsheed calculator for the UC1845A-SP? Or is it possible to simulate with WEBECH? Best regards Rolf
    • Answered

  • UC1845A-SP: Sink/Source Current OUT pin

    Resolved
    Part Number: UC1845A-SP Other Parts Discussed in Thread: TIDA-070002 Tool/software: Dear Support What is the maximal peak current at the OUT pin? Specified is 200[mA] RMS but Figure 1. goes up to 500 [mA]. I saw several designs (e.g. TIDA-070002…
    • Resolved
    • 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

  • UC1845A-SP: Need for additional data not provided in datasheet: oscillator, COMP, Err Amp Input voltage

    Part Number: UC1845A-SP I have several questions below relating to setting tspec limits for the free-run oscillator frequency, the COMP offset diodes, and the Err Amp Input Voltage. 1) The oscillator: I have some DVT data from qty 3 UC1845A-SP that…
    • Answered

  • UC1845A-SP: Bipolar technology or, on the contrary, BiCMOS

    Resolved
    Part Number: UC1845A-SP Hi Experts, Our customer would like to know if component 5962P8670411VYC uses a purely bipolar technology or, on the contrary, BiCMOS In the second case, customer would like to know if we have any SEE reports that could share…
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    • Answered

  • UC1845A-SP: Setting switching frequency in order not to degrade minimum duty cycle

    Resolved
    Part Number: UC1845A-SP Hi, I'm trying to set switching frequency of my flyback converter using UC1845A-SP. I need to allo %48 duty cycle and I need fsw=300kHz. I know that Ct capacitance value effects minimum duty cycle and Rt resistance should be…
    • Resolved
    • Answered

  • UC1845A-SP: Oscillator equivalent circuit

    Resolved
    Part Number: UC1845A-SP Other Parts Discussed in Thread: UC1845 For the UC1845, do we have an equivalent circuit diagram for the Rt/Ct pin internals that is similar to other controllers that use separate Rt & Ct connections? (see example below):
    • 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: UC1846-SP: Setting switching frequency in order not to degrade minimum duty cycle

    Hey Miray, This question is very similar to this: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1081408/uc1845a-sp-setting-switching-frequency-in-order-not-to-degrade-minimum-duty-cycle The difference…

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