Part Number: UCC28711 Other Parts Discussed in Thread: UCC27714
Tool/software:
I would like to assume driving two MOSFETs in series without a pulse transformer using a single PWM IC (UCC28711). In this case, if the parasitic components of the PCB and…
Part Number: UCC28711 Tool/software:
1.These are two PWM ICs from TI.
2.The 3844 series has output voltage and output current specified in the datasheet. The block diagram also indicates the output voltage. The output current is correlated with the…
Part Number: UCC28711 Tool/software:
This is an excerpt from the UCC28711 datasheet.
The image implies that once the average output current reaches the regulation reference, the controller transitions to frequency modulation mode to regulate the output…
Hello,
Please see mhy comments below.
For Cg, should I use the input capacitance of the MOSFET?
If Cg is note speficied they will give you Qg.
C = Qg/Vg
In the provided guide, the STD2N95K5 MOSFET was used, which has an input capacitance of 105pF…
Part Number: UCC28711 Tool/software: Hello! I am currently building an SMPS using TI's design guide as a reference. 400- to 690-V AC Input 50-W Flyback Isolated Power Supply Reference Design for Motor Drives.
I have one question. The guide uses a…
Hi Seungpyo
Thank you for the reply.
I think the GND for controller signals looks very long. Ideally there should be a big pour to the controller signal GNDs from negative of C1. The gate return looks very long and this needs to be checked. The boxes…
Part Number: UCC28711 Tool/software: Hi,
I am Having issue with the controller that the output is going to some protection but as soon as i turn off AC input, after i second like that the output comes before discharging to zero. I am getting Square wave…
Part Number: UCC28711 Tool/software:
Hi,
When I turn on the device with full load condition (1.5A) the unit is going to some kind of protection but when I turn on the device without load than output is perfect even after loading full load (1.5A), I…
Part Number: UCC28711 Other Parts Discussed in Thread: TIDA-010000 , TIDA-00173 , UCC28740 Tool/software: Thank you very much for your help. Thanks to you, I am fully engaged in the development of SMPS as recommended by TI.
To use SiC MOSFETs (before…
Part Number: UCC28711
Tool/software:
Hello!
I am currently experimenting with an SMPS based on the "400- to 690-V AC Input 50-W Flyback Isolated Power Supply Reference Design for Motor Drives."
Contrary to the guide, I am not…
