Part Number: UCC2894 Other Parts Discussed in Thread: UCC2891 , UCC28C42-Q1 , UCC28C52-Q1 Hello, I am trying to design an active clamp flyback with UCC2894D for an automotive application. The temperature requirement is 105 degC. According to the data given…
Part Number: UCC28C44-Q1 Other Parts Discussed in Thread: UCC28C42 As per application note, the converter is designed for CCM operation by using UCC28C42 for flyback converter. But i want to use in DCM operation can i use the same parameter for calculation…
Part Number: PMP10833 Other Parts Discussed in Thread: UCC28C42 , UCC28C42-Q1 , UC1843A , UC1842 , UC1842A , UCC2813-0 Hi,
UCC28C42 IC used in the EVM has junction temperature upto 105C only. Can you please suggest an alternate part with Tj=125 or more?
Switching…
Hello Aaron,
You can use the UCC28C42 in a two switch forwarded with 1 to 2 gate drive transformer. Figure 29 in the data sheet shows how to use the UCC28C42 in a single switch forwarded converter and this application can be used up to 300 W and only…
Part Number: UCC28C45 Other Parts Discussed in Thread: UC1845A , UCC28C42 , UCC28C41 , UC3845A , UC3845 , LM5104 Hi Export,
We are trying to test the working of the Pspice model of UCC28C45in TINA for which we build the open loop laboratory test fixture of…
Part Number: UCC2813-0-Q1 Other Parts Discussed in Thread: UCC28C42 Hi,
Is there any way to increase the soft start time to limit the inrush current? According to the d/s, the soft time maximum is 10ms but it's not enough.
Thanks
Dongbao
Hello Sendhil
I would try the following -
With 0V at the input to the power stage - you should remove the gate drive resistor R9
You don't say what voltage you are getting at VREF. If it's 0V then I would check for a short circuit between the VREF and…
Hi Sonal,
Could you please describe the difference between the two compensations? Is there a design documentation where they go through the calculations for the values? The UCC28C42 datasheet doesn't seem to have the C23 series capacitance in the typical…