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  • UCC24636: Rpl output resistor value

    TI Thinks Resolved
    Part Number: UCC24636 I recently used webench to create an "mains" ac to 5v dc isolated converter (see https://webench.ti.com/appinfo/webench/scripts/SDP.cgi?ID=829567FEA10E90C3) i noticed that the output has a resister Rpl between 5v+ and …

  • UCC24636: Unencrypted PSpice model required

    TI Thinks Resolved
    Part Number: UCC24636 We are trying to design a power generator circuit using the UCC24636 IC. The encrypted spice models available online are giving simulation error of "too few nodes" in LTSpice. Can anyone provide the unencrypted spice model file for…

  • UCC24636: Start up burning MOS DS level

    Part Number: UCC24636 Dear Expert My customer start up synchronous rectifier burning MOS DS Pin . This kind of failure phenomenon has about 4 sets, a total batch 500 sets. Below is schemeitc : Could you give any suggestion how we locate where the problem…

  • UCC24636: SR timing delay

    TI Thinks Resolved
    Part Number: UCC24636 Our customer found folloing SR timing delay waveform. (delay time: about 550ns) <Condition> IN:DC240V-DC340V OUT:13.5V/4A Also they didn't found low Vin and light load condition. CH1:Primary FET_VDS CH2…

  • UCC24636: DRV ON time

    TI Thinks Resolved
    Part Number: UCC24636 Our customer consider to use UCC24636 with Low-Side SR Configuration. Please see attched waveform. 2541.waveform.xlsx 1.Is this waveform normal .? 2.Can they extend DRV ON time ? Please let us know how to extend DRV ON time. 3.If…

  • RE: UCC24636: RVPC,RVSC

    Ulrich-san Thank you for your support.We got additinal information from customer. Customer checked pcb connections is true. And capacitor value between VPC to device GND in all sheet are correct About turns ratio of the windings: Np:17 Ns:5 Nb:2 Regards…

  • UCC24636: DCDC CONVERTER, FLYBACK, 80-160V IN, 120V OUT, 1A, WEBENCH

    TI Thinks Resolved
    Part Number: UCC24636 Other Parts Discussed in Thread: UCC28740 , TL431 Dear officer, I am writing to ask one question about a UCC24636 application in a flyback convert. When I plug in 80-160VDC in, 120V 1A out into WEBENCH, it provides me this circuit…

  • UCC24636: UCC24636

    TI Thinks Resolved
    Part Number: UCC24636 Hi Sir： I use the ucc24636 as auxiliary power controller, Vout =12V.. And I use the excel UCC24636-Calc to set the external resistance. I have a resistor Q1 in parallel and Q1 is 1200V MOSFET. it Out of work,The Vout i can get 12V…

  • RE: UCC28781: Suitable Flyback controller

    Hi Charles, The UCC28781 or UCC28782 could work for this. For the PFC, the UCC28056 can be used on the front end. I found PMP22538 which is a 60-W reference design that might be a good starting point as well. WEBENCH recommends an LLC approach which would…
    • Answered

  • UCC24636: possible to use for output voltage Vout = 31V ?

    Resolved
    Part Number: UCC24636 Other Parts Discussed in Thread: UCC24624 Dear Team, our customer uses the UCC24636 for an industrial battery charger. The first version had an output voltage of 11-15.6V, so no problem. In another project they are looking for a SR…
    • Resolved

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