Part Number: UCC28251 Tool/software: Hi team,
This is FAE Jayden, ZTE is using UCC28251 in HSFB power module. During the application process, they found that the voltage of FB/EA- was -0.6V, which exceeded the requirement of -0.3V. Is there any application…
Part Number: UCC28251 Tool/software: Hi team,
This is FAE Jayden, continuing from the previous E2E thread, how long does it take for the device to enter the latch state and exit the latch state after the input voltage is undervoltage? Customers need this…
Part Number: UCC28251 Other Parts Discussed in Thread: UCC28951 , UCC28950 , UCC2808A-2 , LM25037
Tool/software:
Hello,
I am trying to design a 1 kW DC/DC converter whose output will be used for a sinusoidal pwm full-bridge inverter.
My specs for the converter…
Part Number: UCC28251 Tool/software: The datasheet describes how to "enter" pulse-enable operation by sending a falling edge to EN pin prior to SS reaching 0.3V. Great. As the other posts imply there are concerns with 'accidental' glitches causing…
Part Number: UCC28251 Other Parts Discussed in Thread: OPA2388 Tool/software: Hi team,
This is FAE Jayden, ZTE is using UCC28251. They have raised one question that I need to check with you.
Can the overcurrent protection function of UCC28251 be made…
Part Number: UCC28251 Tool/software:
Hi Team,
This is FAE Jayden, my customer ZTE would like to know which pins of UCC28251 have latch-up effects? Is it just the VDD pin? Are there also latch-up effects on output pins such as OUTA and OUTB?
If so, how…
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…
Part Number: UCC28251 Other Parts Discussed in Thread: UCC28250
Hello,
I have configured the external circuit of controller to get the 90KHz at 45% duty PWM on primary outputs. Hence the RT ~82Kohm and external PWM applied across this resistor.
Test…
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 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
