Part Number: UCC28720 Hi,
At the top of page 19 of the datasheet, there is a formula that calculates Ls. Is the value of Ls critical? Can it be less than what is calculated? Because the value found is very high (8mH while transformers good for a similar…
Part Number: UCC28720 Other Parts Discussed in Thread: DRV110 Hi,
Can we use UCC28720 for constant current control application (example: solenoid control).
Is it possible to disable the voltage control loop and use only the current control loop.
Part Number: UCC28720 Other Parts Discussed in Thread: UCC28710
I made a Flyback using UCC28710. It works well. I replaced the controller by UCC28720.
According to two datasheets, there is no many difference between two controllers such as maximum switching…
Part Number: UCC28720 Hi,
We are using UCC28720 as per attached image below.
In few of the power supplies, we found Parts R91, R92 ( Current Sense resistors), U1 ( Switcher) , T1 ( Transistor connected to the switcher drive) and R2 ( Transistor Base drive…
Part Number: UCC28720EVM-212 Other Parts Discussed in Thread: UCC28720 Hi ,
I know that the UCC28720 can achieve a 5W charger design without Y capacitor. under easily passing EMI test (Application Report Number ZHCA597), I want to know, if output changed…
Part Number: UCC28720 Hello,
I copied the reference design inside UCC28720 datasheet, including same part numbers for discrete. The design gives the expected output with no load connected, and when a 10 ohm load is added the voltage drops to zero with…
Part Number: UCC28720 Other Parts Discussed in Thread: UCC28722 , UCC28880 , UCC28910 Can we design 5V, 0.5A isolated power supply module with this IC? If i try with TI Webench it shows that junction temperature lower than ambient temperature. Please advise…
Part Number: UCC28720 Customer wants to design a 5V 7.5W application referring the EVM.
Is it enough change that only current sense resistance is changed from 2.15 ohm to 1.56 ohm, using the same transformer with Lp=1.5 mH and turns ratio of 15.42:1? …
Other Parts Discussed in Thread: UCC28720 , UCC28720EVM-212 , UCC28700 , UCC28704 , UCC24636 , UCC28730 , UCC24650 Hello, I've re-created the UCC28720-EVM on my own circuit card, emulating everything "almost" exactly - placement and layout is very very close…