Akira-san
UCC256302 minimum slew rate that it can detect is 1 V/ns. The newer UCC256402 minimum slew rate is 0.1 V/ns. I cannot tell from the waveform provided if this is an issue with your design, but moving over to the newer UCC256402 will help insure…
Hello,
You can use the LM5021 in a two switch forwarded design.
We have a design tool that can be used to design many different power typologies. A two switch forwarded is one of the power stages. This will give you the transformer turns ratio…
Hello,
1. Section 10.2 of the EVM user's guide explains what this circuitry is for. The user's guide can be found at the following link.
https://www.ti.com/lit/ug/sluubx3b/sluubx3b.pdf
2. The HV pin is used for JFET charging of the VCC pin for…
Hi ACGUY,
Under normal switching conditions, the high side gate will turn on as soon as the controller detects the switch node has finished slewing up to Vin. When the controller is not able to detect the slew rate, the next gate turn-on will be delayed…
Rock,
The newest resonant mode converter (for LLC) is the UCC256402. Has the customer reviewed this device? This is ZVS topology for high efficiency and protects against ZCS conditions for high reliability.
Has the customer reviewed this device…
Hello,
The PSFB with ZVS improve efficiency by removing the switching losses (Psw).
In your design with an estimated FET turn on and turn off time (tr) of 50 ns switching the primary at 100 kHz would remove 7.5W of switching loss from the Hbridge…
Part Number: UCC256404 Other Parts Discussed in Thread: UCC256402 , UCC256403 , UCC28600 , UCC28085 , LM5156 Hi team,
My customer wants to develop the power module to convert 220VAC voltage to 48VDC (6A) and 30VDC (9.5A). It is for elevator main control…
Part Number: WEBENCH-POWER-DESIGNER Other Parts Discussed in Thread: UCC256402 , UCC28180 Hi there,
I managed to design a power supply that meets my PVDD requirements (for driving multiple Class-D amplifiers) using WEBENCH, but I'd like to include a…
Part Number: UCC256404 Other Parts Discussed in Thread: UCC256402 , UCC28740 , UCC25600 , UCC28782 , UCC28780 Hello:
While looking into the eval kit of UCC256404 LLC controller, is there a possibility of starting it up from the input power line itself…
Hi Oliver,
We are thinking of upgrading the IC from UCC256302 AND considering the UCC256402 AS THE ALTERNATIVE PART.
Our client need this supply for audio power amplifier thus ultra-low audible noise is a requirement besides wide-ac-input one of many…
