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  yogesh ramdasi

  • 5 months ago
  • Power management
  • Power management forum

  UCC27714: ucc27714

  TI Thinks Resolved

  Part Number: UCC27714 please refer section 7.4.3 (in datasheet of ucc27714) about forward converter which mosfets are recommended for charging cboot is it possible to use this forward conveter for pure reistive load please reply Regards Yogesh...
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  Zirui Su

  • 5 months ago
  • Power management
  • Power management forum

  UCC27714: Question of its CMTI and related issue

  TI Thinks Resolved

  Part Number: UCC27714 In UCC27714 datasheet page 4 I can see that the dVhs/dt max is equal to 50V/ns, I would like to ask about its CMTI related question: a) What is the difference between CMTI and slew rate, are they refer to different objects? b...
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  Richard Herring

  • 4 months ago
  • Power management
  • Power management forum

  RE: UCC27714: Low-side MOSFETs disabled but getting hot, with 5% high-side PWM.

  Hello Farmer Jo, It is good to hear your latest changes have, I assume, resolved your remaining issues. The questions you asked regarding loss, or drop of the bridge input voltage and same with the driver bias, in itself would not damage the driver...
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  Richard Herring

  • 5 months ago
  • Power management
  • Power management forum

  RE: UCC27714: C_Boot charging circuit

  Hello Felix, I have edited the datasheet drawing with the different resistor arrangement as discussed in the previous E2E forum. I would suggest this approach to limit the current in the boot resistance, so separate the boot resistance from the pull...
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  Mamadou Diallo

  • 5 months ago
  • Power management
  • Power management forum

  RE: WEBENCH® Tools/UCC27714: UCC27714 working

  Hello Gandhali, Thanks for reaching out. This will not work, unless you have dedicated floating bias on HB-HS as the bootstrap circuit is not compatible with your application given that the boot cap needs a path to GND to replenish when the high-side...
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  Richard Herring

  • 6 months ago
  • Power management
  • Power management forum

  RE: UCC27714: Input pull down

  Hello GI, I cannot comment on tradeoff of adding pull down resistance regarding the impact to the uC GPIO pins performance. I would ask would if a 10K pulldown resistance would have any negative impact on the uC output pins generating the PWM drive...
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  Antonio Fadhel

  • 25 days ago
  • Power management
  • Power management forum

  UCC28950: Channel D Output Unexpected Long On-Time

  TI Thinks Resolved

  Part Number: UCC28950 Hi Team, My customer is having a UCC28950 issue with long on-times on the D FET causing high current and eventual FET failure. They tried increasing the slope comp and it did not help, so they believe it might be due to noise in...
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  6052478

  • 8 months ago
  • Power management
  • Power management forum

  UCC27714: Bootstrapped High side fets not switching

  TI Thinks Resolved

  Part Number: UCC27714 Hi I have the low side fets switching fine, but the high side ones are not doing much, below is this portion of the schematics: Mosfets are FDP61N20 U8 is the UCC27714 U9 is isolation ISO7730FDWR D26 is standard diode...
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  Dylan Bartlett1

  • 10 months ago
  • Power management
  • Power management forum

  UCC27714: Enable pin not working correctly under simulation

  • Resolved

  Part Number: UCC27714 Hi, I am working with the SPICE model for the UCC27714 gate driver
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  Howard Zou

  • 9 months ago
  • Power management
  • Power management forum

  UCC27714: level shift inquiry

  • Resolved

  Part Number: UCC27714 Hi, in the internal circuit for HI to HO level shift. It's two Vss/HS level

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