Part Number: UCC28250 We used UCC28250 as the full bridge controller in a non-isolated DC/DC converter. Input voltage is 70Vdc, output voltage is 5.72Vdc.
Normal primary MOSFET on time is 1.5us, abnormal primary MOSFET on time can be 3us.
Pls check…
Part Number: UCC28250 Other Parts Discussed in Thread: PMP8878 Dear all,
How the switching frequency of PMP8878 is decided as 200KHz?. what are the parameters which limits the switching frequency?. What will happen if we the switching frequency doubled…
Part Number: UCC28250 Other Parts Discussed in Thread: UCC28950 Hi,
The application circuit in the datasheet shows an implementation of a voltage mode control converter. If I want to make a current mode converter controlled from the primary side, how should…
Part Number: UCC28250 Hello ,
I need information for the part "UCC28250PW/UCC28250PWR",refer below for queries
1.Requirement for radiation (Single event effect) : The power supply module shall provide all functions needed for continued safe…
Part Number: UCC28250 Other Parts Discussed in Thread: PMP8878 , UCC25230 , , PMP8877 , UCD3138 Hello sir,
We are planning to develop a Brick module taking PMP8878 as a reference. But we have the requirement of Input over voltage and under voltage protection…
Part Number: UCC28251 Other Parts Discussed in Thread: UCC28250 , , UCC28250EVM-564 Hi Team,
One of my customer is using UCC28250 on their project, but they need change to UCC28251 for some reasons. I just want to know how to change the circuit when replace…
Part Number: UCC28250 i need to build a buck converter from 1200v to 300v i must generate pwm using UCC28250, is that possible?
Reading the datasheet, seems like there's no application circuit to control a non-synchronous buck converter (since the…
I tried several different combinations of resistors including the 100 Kohm, it's not working for me. Please note that I am using UCC28251 instead of UCC28250.
Part Number: UCC28250 I have a 300v to 48v push-pull dc-dc using UCC28250 . because the input voltage already higher 75V, Can you let me know how to determine ramp resistance and capacitance? and how to select premary-side ovp resistance?
Hi,
If UCC28250 EVM original board ripple voltage does not meet the specs based on its user's guide, you would need to make a return process.
If you changed something such as change UCC28250 to UCC28251, the original board needs to be tuned up. for…
