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 only transformer…
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 consult…
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-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 a new…
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…
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 diode,…
Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 Hi team,
My customer would like to us know if UCC28730-Q1 can be used as HV redundancy flyback for input range from 40V to 880V?
Also can this flyback controller be configured for multiple…
Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28740 , UCC28730 , UCC28740-Q1 Hi,
the data sheet of the UCC28740 suggests to use two capacitors to allow start up from high voltage for voltages above 700Vdc. Why is this not included in the data…
Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 Hi team,
I'm looking to use the UCC28730-Q1 on a 400VDC HV battery back-up supply to a low voltage, 12V rail. The 400V battery can face transients up to 800V, but the Abs Max of the UCC28730…