• UCC256403: UCC256403 HV Function

  

  Kami Huang60

  TI Thinks Resolved

  Part Number: UCC256403 Other Parts Discussed in Thread: UCC28019A Dear Sir/Ms. 1. Integrated High Voltage Startup Does it mean UCC256403 pin 1 (HV) be disconnected ? After disconnect, it starts to operate when VCC is supplied ? Because of some past experience…

  • 1 month ago
  • Power management
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Answered

• UCC256403: Driving GaN

  

  abhishek moghe

  Resolved

  Part Number: UCC256403 UCC256403 has high side and low side Gate Drives included. Can it be used to Drive GaN FET as well, assuming we have a level shifter between IC and Actual GaN FET ? i am looking at the specific dV/dt rating of HS floating node which…

  • Resolved

  • 6 hours ago
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Answered

• UCC256403: PMP40766 LLC based on UCC256403 constant output current mode

  

  Olek-PL

  Resolved

  Part Number: UCC256403 Other Parts Discussed in Thread: PMP40766 Hello, I see that in the PMP40766 500W reference design for charging batteries there is a diagram (page 10) showing nice constant output current mode at the maximum load. My question is: how…

  • Resolved

  • 3 months ago
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Answered

• UCC256403: Avoiding tripping Fault

  

  Connie Lu1

  Resolved

  Part Number: UCC256403 Hi team, My customer is using the UCC256403 in an LLC design and they need to be able to inhibit or stop the switching of the primary side LLC mosfets but need to do so without tripping the FAULT state which then results in a 1…

  • Resolved

  • 1 month ago
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• RE: UCC256403: Need to create a SPACE Power supply - Grade LLC Controller 500W. I'm stuck between a UC1825B-SP and UCC256403.

  

  Steven Mappus1

  Hi Thomas, Two parts tp your question, I will address each separately: Unable to run UCC256403 SIMPLIS model: You will get an error if you try and run the sim directly from the zip file so please make sure you unzip all the contents into a local folder…

  • 1 month ago
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• UCC256403: Migrating from UCC256303

  

  Kazuki Itoh

  Resolved

  Part Number: UCC256403 Other Parts Discussed in Thread: UCC256303 , Hello team, I'm considering to migrate from UCC256303 to UCC256403. In this case, which one do you generally recommend to use, UCC256403A or UCC256403? Regards, Itoh

  • Resolved

  • 1 month ago
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Answered

• UCC256403: Problem with LLC in the constant current mode

  

  user5329941

  Resolved

  Part Number: UCC256403 Other Parts Discussed in Thread: PMP40766 Hello, I've a problem with LLC based on the UCC256403 in the constant current mode and I would be very thankful for any help. I based my project on the reference design for 500W CC/CC…

  • Resolved

  • 16 days ago
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Answered

• UCC256403: Transformer design

  

  Ilia Hadzhiev

  Resolved

  Part Number: UCC256403 Hi, this is transformer for 500W LLC 390V / 24V. After measuring the leakage inductance i have different values depend witch secondary winding i am shorting. Any help please ?. The transformer is wound by myself so there is no perfect…

  • Resolved

  • 2 months ago
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• UCC256403: In the case of unused BW pin

  

  Satoshi

  TI Thinks Resolved

  Part Number: UCC256403 Other Parts Discussed in Thread: UCC256303 Can UCC256403 use the condition of unused BW pin connect to GND? Below E2E thread is described UCC256303 can set BW pin to GND, but UCC256403 is add BMTH and BMTL sensing. I wonder about…

  • 1 month ago
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Answered

• UCC256403: burst mode can't be disabled in Simplis simulation

  

  Sam76

  Resolved

  Part Number: UCC256403 Hello, I try to disable burst mode in Simplis simulation. But the burst mode is still engaging as shown in waveform below. The BMTH and BMTL are set to 0.2. I tried RBW as 2.7k and 18k. None could disable burst. Any suggestions…

  • Resolved

  • 1 month ago
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