Part Number: UCC28780 Hello,
I'm designing an AC/DC power supply 115Vac@400Hz to 32Vdc and in primary side I’m facing startup issues with UCC28780RTE.
in the power on phase I get in SWS pin around 3.01V and for VDD, 1.83V, and it doesn’t allow…
Part Number: UCC28780 Hi,
I am designing an isolated DC-DC converter using UCC28780. It has some startup problems. The converter is restarting after 6 switching cycles (ULVO cycle reset). Observed that No overcurrent, Overtemperature, brownout,CS pin…
Part Number: UCC28780 Other Parts Discussed in Thread: TINA-TI Team,
is it possible to use the UCC28780 in a capacitor charging supply, similar to LT3751?
Is this controller in TINA and the new PSPICE for TI?
Thanks
Part Number: UCC28780 Other Parts Discussed in Thread: UCC24612 , LM321 We have a power supply product (input : 100~240Vac, output : 30V/2.34A) which used the design solution of TI UCC28780 + Navitas GaN MOSFET NV6115 + UCC24612, it can work well at full…
Part Number: UCC28780 Hi,
We are designing a 12V/65W power supply using UCC28780(QFN package). During testing, we observed that there are PWML pulses. Please see the below image CH1:Vdd CH2:Voltage on HVG pin CH3: Voltage on SWS pin, CH4: Reference voltage…
Part Number: UCC28780 Hi Experts,
Our customer BAOLIJIN made a 65W ACF board. UCC28780 is used as the primary control chip, the primary side with integrated GaN as the switch tube and the secondary side with synchronous rectification. Output voltage…
Part Number: UCC28780 Hi,
I designed a USBC charger using UCC28780, the aimed power rating is 20V/6A. however, the temperature of switches rose to 90 degree under the 6 W output power. I checked the operation condition of UCC28780. it seems stable under…
Part Number: UCC28780 Hi, I am trying to do AC simulation with the simulation file of UCC28780(GaN) in simplis, but the simulation always fails in convergence. Is it possible to perform AC analysis in simplis?
Part Number: UCC28780 Other Parts Discussed in Thread: PMP30631 , , PMP , TL431 Dir Sir/Madam,
I have successfully simulated the design on the kit .
Now I want to change the design to output 5V ~ 6A.
Simple iteration of the ratios reported in the PMP30631…