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  • UCC21551-Q1: Ucc21551 Layout Guidance

    TI Thinks Resolved
    Part Number: UCC21551-Q1 Other Parts Discussed in Thread: UCC21551CQEVM-079 Hello, We are planning to use the UCC21551x isolated gate driver in a motor drive application. In the datasheet/layout guideline, the following recommendation is given: …

  • RE: UCC21551-Q1: Please review the schematic of UCC21551-Q1

    Dear Amy, Thank you for your support. 2. About enable pin, I saw that 90kohm pulldown is attached internally in block diagram. Is internal pullup in your answer typo? (1) As I said, nFAULT_OCP_IN is from current sensor's output. Current sensor…
    • Answered

  • UCC21551-Q1: UCC21551-Q1 DFJ package suitability for 1,500 VDC channel-to-channel voltage

    Resolved
    Part Number: UCC21551-Q1 Hello TI team, Can the UCC21551-Q1 DFJ package be used in a 1500 VDC system? The channel-to-channel rating is 1850 VDC, but the distance between the two channels is only about 5.3 mm. My understanding is that at least 8 mm…
    • Resolved

  • UCC21551: Implementing ASC Protection with UCC21551- Hardware vs Software Approach

    Part Number: UCC21551 Hi, I'm designing a traction inverter and want to implement ASC (Active Short Circuit) protection. Background: Some driver have built-in ASC protection I'm using UCC21551 (no ASC input) I need to implement ASC protection…
    • Answered

  • UCC21551: Negative Gate Bias from UCC21551 for SiC MOSFETs

    Resolved
    Part Number: UCC21551 Other Parts Discussed in Thread: UCC21530 Hi Ti Team, For my totem-pole PFC design I am using the isolated dual gate driver UCC21551 from TI to drive SiC MOSFETs. For SiC devices, a small negative gate bias during turn-off is usually…
    • Resolved

  • UCC21551-Q1: FuSa version of UCC21551-Q1

    TI Thinks Resolved
    Part Number: UCC21551-Q1 Hi Expert, Have a nice day. Does TI have UCC21551-Q1's FuSa version? Thanks! Best Regards, Leo
    • Answered

  • UCC21551: Issue with 100% Duty Cycle Simulation using UCC21551 (Based on SLUAA58)

    Resolved
    Part Number: UCC21551 Other Parts Discussed in Thread: UCC27212 Hi all, I previously opened a thread with the same title, but it seems to have been removed, so I am reposting my question here. I am working on a high-side power switch design using…
    • Resolved
    • Answered

  • UCC21551: Subject: UCC21551 for 8x Parallel MOSFETs per Switch - Design Review Request

    Resolved
    Part Number: UCC21551 Hi TI Team, I'm using UCC21551BDWKR to drive 8 parallel MOSFETs per switch position (16 total per phase leg) in a motor controller. 22R gate resistor per MOSFET Switching frequency: 8-15kHz Bus voltage: up to 96V Is…
    • Resolved

  • UCC21551-Q1: UCC21551-Q1: Why do the DFJ and DWK packages have the same 1850-V channel-to-channel isolation rating?

    TI Thinks Resolved
    Part Number: UCC21551-Q1 Hello TI Team, The UCC21551-Q1 datasheet specifies a channel-to-channel creepage distance of >5.3 mm for the DFJ28 package and >3.3 mm for the DWK package. However, the Absolute Maximum Ratings specify the same channel-to…
    • Answered

  • UCC21551: Inquiry Regarding External Circuit Design for the UCC21551

    Resolved
    Part Number: UCC21551 Other Parts Discussed in Thread: UCC21520 Tool/software: Hello, I'm Cheol-ha kang. I am a hardware engineer based in South Korea, specializing in the development of converters for the automotive industry. First, before I ask…
    • Resolved

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