Part Number: UCC28251 Other Parts Discussed in Thread: UCC27200 , , UCC28521 Hi team,
Customer design UCC28251 and UCC27200 like schematics shown. And customer found that when EN pin of UCC28251 is lower than 1.5V, the output of UCC28251 still output drive…
Other Parts Discussed in Thread: UCC28521 , UCC28528 Hello,
the datasheet of PFC controller UCC28521 / UCC28528 states in section oscillator a maximum switching frequency of 230kHz.
In section PIN DESCRIPTION PIN2 a maximum switching frequency of 600kHz…
Other Parts Discussed in Thread: UCC28521 , UCC28517 , TL431 Hi,
Posting this issue for factory assistance on behalf of Nam Tosuntikool of Summit Semiconductor:
Email 4/16/12
Hi Tuan, Mark,
Could you please help locating the UCC28521 expert? My issue…
Part Number: UCC28780 Other Parts Discussed in Thread: UCC29950 , UCC28521 , TIDA-01495 Hello, I want to design an active clamp flyback power supply, the output power can be up to 500 w. At the same time, there's PFC function integrated in a single stage…
Other Parts Discussed in Thread: UCC28521 Hi,
In our interleaved PFC, there's one diode D3 as the attached picture.
What's it used for? Customer wants the details.
Thanks.
Br, Jordan
Other Parts Discussed in Thread: UCC28070 , UCC28521 , UCC28251 UCC28070 support team, I have this question from a customer. Our previous PFC controllers had the constraint that Imo <= 2 Iac. For example, I see in the datasheet for UCC28521 on page 9: …
Other Parts Discussed in Thread: UCC28521 Hello. I have an application where I would like to use one of the PFC/PWM chips like the UCC28521 to develop a rail for a downstream process. However, the product requires that the rail be available down to low…
Other Parts Discussed in Thread: UCC28051 , UCC28180 , LM5023 , UCC24630EVM-636 , UCC28521 Dear all
Good day !
We are going to design two kinds of ACDC power modules---- approximately 400W or 700W output.
I found the cheapest PFC device is UCC28051 which is…
