• 

  Sam76

  • 11 days ago
  • Power management
  • Power management forum

  UCC256403: pin LL/SS setting and LO gate pulse during charge boot stage

  TI Thinks Resolved

  Part Number: UCC256403 Hello, I have a few questions about the pin LL/SS setting and LO gate pulse during charge boot stage. 1. Will the SS initial voltage setting still be valid when ZCS event is triggered? 2. As I read through 03/2020 revision...
• 

  Satoshi

  • 1 month ago
  • Power management
  • Power management forum

  UCC256403: Measure for buzzing noise

  Part Number: UCC256403 One customer is designed UCC256403 board, but already occur buzzing noise. If there reason and correction point for improve buzzing noise, please let me know. And when the other UCC25640x/UCC25630x series better solution, please...
• 

  Rock Shao

  • 2 months ago
  • Power management
  • Power management forum

  UCC256403: For 1200W DC/DC power supply

  • Resolved

  Part Number: UCC256403 Part Number: UCC256403 Hi, The customer has a demand for 1200W DC/DC power
• 

  user5996000

  • 2 months ago
  • Power management
  • Power management forum

  UCC256403: VCR voltage fixed 7.2V at burst mode

  • Resolved

  Part Number: UCC256403 Hi expert, I'm using burst mode. The VCR voltage is fixed at 7.2V just
• 

  Yunsheng Qu

  • 2 months ago
  • Power management
  • Power management forum

  RE: UCC256403: burst mode disable

  Hi, Dear user6216947 The resistance from BW pin to GND define the burst mode scheme. The burst mode can be disabled by connecting BW pin to Gnd through 2.7kohm. BR, Yunsheng
• 

  Lukas Kreiner

  • 4 months ago
  • Power management
  • Power management forum

  UCC256403: shortcut is not detected

  TI Thinks Resolved

  Part Number: UCC256403 Hi Team, in case of shortcut at the output of my circuit this happens: CH1: signal on PIN 6 /ISNS CH2: Gate lowside FET during the time in which the higeside FET is on (between the ursors), the average of the ISENS signal...
• 

  5321944

  • 3 months ago
  • Power management
  • Power management forum

  UCC256403: UCC256403 work unusual in a constant current LED driver

  Part Number: UCC256403 Hi: I use UCC256403 in a constant current LED driver. When dim to light load,it looks like entered brust mode ,but output current has large ripple( Electronic load CV mode). I tested IFB,source from 140uA to 215uA,so i think...
• 

  user6230314

  • 5 months ago
  • Power management
  • Power management forum

  UCC256403: The open / short operation mode of each pin.

  TI Thinks Resolved

  Part Number: UCC256403 Hi, What if each pin is open or shorted? And what if the adjacent pins are shorted? I would like to know the open / short operation mode of each pin.
• 

  user6230314

  • 6 months ago
  • Power management
  • Power management forum

  UCC256403: About malfunction when noise enters BW pin

  • Resolved

  Part Number: UCC256403 Hi, I have connected between the BW pin and GND with a resistor, but when
• 

  user5996000

  • 6 months ago
  • Power management
  • Power management forum

  UCC256403: Maximum frequency setting at burst mode disable (option 7)

  • Resolved

  Part Number: UCC256403 Hi expert, How to set the maximum frequency when the burst mode disable

Didn't find what you are looking for? Post a new question.

• Ask a new question