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  • UCC21540: UCC21540 Questions

    TI Thinks Resolved
    Part Number: UCC21540 Hi team, Our customer has some questions of UCC21540. 1. DT pin setting: if they don’t need to use this deadtime setting, can we pull this pin to GND directly? 2. About the CMTI spec: how to test this spec, or how to check whether…
    • Answered

  • UCC21540: UCC21540DWKR

    Resolved
    Part Number: UCC21540 Hello experts, Customer normally decaps and checks the die of the components before a run. For TI UCC21540DWKR, they found that the die showing a different print ID. Traditionally, TI part# on chip matches that in the die. Please…
    • Resolved
    • Answered

  • UCC21540-Q1: Are both of OUTA and OUTB is "L" state @ one of them is under its UVLO_OFF threshold?

    Resolved
    Part Number: UCC21540-Q1 Hi team, Are both of OUTA and OUTB is "L" state @ one of them is under its UVLO_OFF threshold? Or Just one output is "L" state @ its VDD is under UVLO? For example, If VDDA is under VVDDA_OFF, is only OUTA "L…
    • Resolved
    • Answered

  • UCC21540-Q1: UCC21540-Q1

    Resolved
    Part Number: UCC21540-Q1 Hello, I want to implement the following configuration and thanks to ti technical team, I could find the answer of my questions. There is one more point that I would like to know your opinion about. In the following circuit, having…
    • Resolved
    • Answered

  • UCC21540-Q1: UCC21540-Q1

    Resolved
    Part Number: UCC21540-Q1 Hello, I hope this message finds you well. I want use UCC21540-Q1 in order to drive my N-MOSFETs that I am going to use for my prototype. In order to turn off my MODFETs I want to use a negative Vgs and I found the following interesting…
    • Resolved

  • UCC21540: Duty cycle lose

    TI Thinks Resolved
    Part Number: UCC21540 Dear technical support: Hello! We are using TI's UCC21540 device, but there are some questions during the application. Now I want to consult technical support and hope to get your help. 1. Figure 2 in the attachment is the test…

  • UCC21540: UCC21540 driver A/B switch feasibility

    TI Thinks Resolved
    Part Number: UCC21540 Hi sirs, UCC21540 has 2 output rails A and B. Are they (A and B) independent operation? Usually, A is put on high side, and B is on low side. May I config them in A at low side, and B at high side with correct PWM change?
    • Answered

  • UCC21540: Whether it can drive SiCFET

    Resolved
    Part Number: UCC21540 Dear Teams, Could I ask whether UCC21540 can drive SiCFET? Customer is looking for isolated gate driver with disable function that can drive SiCFET, do you have any recommendation? Thanks! Dylan
    • Resolved

  • UCC21540-Q1: Phase-Shift-Full-Bridge Primary (HV-Current) waveform

    TI Thinks Resolved
    Part Number: UCC21540-Q1 Other Parts Discussed in Thread: UCC28951 , UCC28950 Hi, in our Phase-Shift-Full-Bridge DC/DC we have the issue, that the primary (HV-Current) has not the expected waveform. We tried several things to get an idea why: First we change…

  • UCC21540-Q1: Deadtime

    TI Thinks Resolved
    Part Number: UCC21540-Q1 Other Parts Discussed in Thread: UCC21520 Hi team, Can you please provide the minimum and maximum values of Dead Time (DT) for UCC21540-Q1? In the datasheet of UCC21520, this information is provided in the 5 Pin Configuration and…

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