Part Number: UCC28742 Tool/software: Hi Team ,
I m using your UCC28742 Simplis model for simulation but we are getting errors while simulation it .Below is the error message i m getting .i just want to know weather we can run this example simulation…
Part Number: UCC28742 Tool/software: Hi,
Thank you for your reply. Attached is circuit of output part, now the output capacitance is about 700uF. It maybe a little small, but I think is OK. And I try increasing the capacitance, it seems almost the same…
Part Number: UCC28742 Tool/software: Hi,
When I use UCC28742 to ouput 5.2V(main feedback), 15V and 24V, 5.2V has overshoot. Maximum voltage is about 5.8V, exceed 10%. At the beginning, switching frequency is high, how should I adjust the parements?
CH1…
Part Number: UCC28742 Tool/software: The datasheet for this part seems to indicate that the max power point occurs when: -the Ics produces a peak voltage of 770mV (Vcst(max) on the datasheet) AND -when the frequency is at 105kHz Although the design worksheet…
Hi,
A close one is UCC28781. As you are asking QR, frequency would be variable and cannot be fixed at 300kHz. Please take a look at UCC28781.
UCC28781 Zero-Voltage-Switching Flyback Controller with Dedicated Synchronous Rectifier Gate-Drive datasheet …
Part Number: UCC28742 Tool/software: The random explosion occurred during the power on and off.
We observed that the PWM could not be turned off normally to 0V, but was stuck at 5V.
This caused the MOS to fail to turn off normally, leading to the explosion…
Part Number: UCC28742 Tool/software: Problem Summary:
Despite building multiple prototypes, I'm encountering persistent issues with my power supply design. The primary challenges are:
No output voltage: The power supply fails to generate the expected…
Part Number: UCC28742UCC28742 Circuit Design with Excessive AUX Voltage:
The UCC28742 integrated circuit (IC) datasheet specifies that it can safely operate with a bias supply voltage (VDD) between 9V and 35V.
In your WeBench design, the AUX winding…
Part Number: UCC28742 Tool/software: I have been using UCC28742 IC for power switching, also using XZM-E30091 transformer for stepping up voltage. However, still I am not getting desire output in circuit like a 1000V.
Part Number: UCC28742 UCC256402 Other Parts Discussed in Thread: UCC28950 , UCC28251 , UCC2894 , UCC256402 , UCC25640EVM-020 , UCC25640
Tool/software:
Hi,
I am designing a Power supply having following parameters:
Input Voltage: 85VAC - 265VAC
Input Frequency…
