Hi A M,
Thanks for your response.
Did you try the feedback side change that was recommended in previous thread:
(+) UCC256402: Soft start issue - Power management forum - Power management - TI E2E support forums
Your schematic doesn't show this update…
Part Number: UCC256402 Other Parts Discussed in Thread: UCC256404 , TL431 , UCC256403
Hi,
I have two questions,
1- Verify that this is correct, or correct me if I'm wrong: For UCC256402 or UCC256404 , the datasheet doesn't specify a minimum high startup…
Part Number: UCC256402 Other Parts Discussed in Thread: UCC25640EVM-020 , UCC28064EVM-004 , UCC28056EVM-296 UCC256402 : UCC25640X : what are the start sequances of this component,& what are the conditions
Part Number: UCC256402 Other Parts Discussed in Thread: UCC25640 I am reaching out to seek clarification regarding the operation of the High Voltage Startup (HV) pin on the UCC25640(2/4) LLC Resonant Controller. Specifically, I am inquiring about the minimum…
Part Number: UCC256402 Hi Experts,
On the EVM schematic, ISNS pin has a 100pF bypass capacitor (C20) as shown in the following figure.
What is the allowable capacitance of this capacitor? For example, is it possible to use 1000pF or 0.01F?
Regards,
U…
Part Number: UCC256402 Question 1: During the soft start of this IC [UCC256402], if C1, the upper voltage divider capacitor, is adjusted from C1=47pF to C1=100pF, why does the soft start frequency decrease? If the C1=47pF then fs = 510kHz; C1=100pF then…
Part Number: UCC256402 Hello, Below is attached block diagram of the power stage. My question is, would there be any problem if two separated LLC stages share one PFC input. Considering that if both upper switches are open at the same time both resonant tanks…
Part Number: UCC256402 Hello,
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1244602/ucc256402-soft-start-issue?tisearch=e2e-sitesearch&keymatch=soft%20start%20UCC256402#
Further to our discussion soft…