Part Number: UCC28251 Dear team,
We are using UCC28251 for isolated High voltage DCDC converter with voltage mode control. Now we are planning to use the device in current mode control.,
for voltage mode control, we have connected the ILIM pin to current…
Hi,
I assume no more support needed as no communication for a long time. I will close this thread. You can re-open this thread or create a new if needed.
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…
Part Number: UCC28251 Hello,
Can I operate this IC in open loop such that I will get PWM with 50% duty cycle always (after soft start)? I am planning to driver a half bridge in open loop always with clock sync option.
Thank you
Part Number: UCC28251 Other Parts Discussed in Thread: UCC27712 is there any issue in having UCC28251 in primary side control when input voltage is 300-450V range , output voltage = 12V and load max of 400W.
the Vdd of UCC28251 is given from a non-isolated…
Part Number: UCC28251 Other Parts Discussed in Thread: UCC28250EVM-501 , UCC28250 , Hi team,
I tested UCC28250EVM-501. Input 40V, output 3.3V, load is 10A. And I found that the ripple can reach to 500mV. And I found that the ripple is affected by the switching…
Part Number: UCC28251 Other Parts Discussed in Thread: UCC28221 HI.
UCC282251. It is explained in the datasheet that interleaved forward can be applied.
Please share me the interleaved forward circuit applying UCC282251.
Thank you.
Part Number: UCC28251 Hi!
My team is planning to use this component as a secondary side controller for a 400VDC to 12VDC Interleaved two switch forward converter. Single Choke topology
We're currently having trouble with the synchronous rectification…
Part Number: UCC28251 Hi!
I am designing full bridge DC-DC with UCC28251. Input 220VDC, Output 24VDC/10A, fsw = 250kHz. Controller is on primary side. When input voltage is present, output goes to 24V and then controller shuts own. This process is repeating…
Part Number: UCC28251 Hi team,
customer want a full-bridge or half-bridge controller that can support 25kHz switching frequency, do you have any recommendation?
Thx~
Rayna