Part Number: UCC28730 Hi, I am designing a Flyback-converter and am cuurently planning to use the UCC28730. How does the controller behave, when the maximum duty cycle is reached at a lower frequency then the 83kHz maximum frequency of the controller…
Part Number: UCC28730 Other Parts Discussed in Thread: UCC28950 Hi Team,
Our customer is trying to simulate the UCC28730 in Webench but encountered an error. Please see the details of the issue below.
I'm trying to take 575VDC nominal and step it…
Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 Hi
From the simulation result, controller will stop working(no DRV) when VOUT rise to the design value 12V, it looks like the VS level is above 4.6V and trigger the OVP,
I want to…
Part Number: UCC28730-Q1 Hi,
Attached file slum527 is simulation file from TI website, it is a 5V/2A output with a minium Vin around 86V
Attached file Vin_50V_Vout_12v is a new design simulation file based on slum527, I modify the Rcs,Rs1,Rs2 for…
Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 Q1: Why Rs2 is not present in below formula? I think Ivsl(run) go both RS1 and Rs2, isn't it ?
Q2, I am doing the design from DC input and the VIN(min) is as low as to 50V,output is…
Part Number: UCC28730 I am trying to simulate the part UCC28730 on Pspice for TI by using model given in its library
But unable to get DRV Signal, voltage level at HV, VCC, VS and CS pins is as defined in electrical characteristic of part as per datasheet…
Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 , UCC24650 Hi there,
I downloaded UCC28730 spice macro from this link . But when I try to import to TINA, an error message pops out:
Same for UCC24650 from the same zip file. The…
Part Number: UCC28730-Q1 Hi,
Q1: I don't understand why Dmax is derived at fmax? From below formula, the duty cycle is minimum when switch frequency is maximum, isn't it?
:
Q2: I don't understand the principle why Dmagcc is fixed internally at…
Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 , UCC24650 , Every schematic I see with the UCC28730 always has a wake-up UCC24650 on the secondary side.
Is this needed? Will the flyback work without it?
For example if I have a…
