Part Number: UCD3138A Other Parts Discussed in Thread: UCD7138 , when I use UCD3138A to control the synchronous rectifier with the UCD7138 driver, the PWM signal send to IN pin is based on the phase with primary. which means the turn-on of the IN pin…
Hello, the OUT_OC_UV_FAULT_LIMIT is defined at VOUT_UV_FAULT_LIMIT
I didn't find there is a parameter called "SR State". There is only one parameter called "SR_ON", which is used to turn on/off SR.
If you want to know more about UCD7138, please read…
Part Number: UCD3138ALLCEVM150 Other Parts Discussed in Thread: UCD7138 Hi Champs, A customer would like to know whether "Fusion Digital Power Studio" could control the functions with UCD3138ALLCEVM150 as follows: 1)Synchronous rectification control.…
Part Number: UCD3138A Other Parts Discussed in Thread: UCD7138 , , UCD3138 Hi,
Thank u for ur time.
My target is to use UCD3138A and UCD7138 to control a LLC circuit.
recently, I have studied this by traininglab1~4. And realized the function of…
Part Number: UCD3138A Other Parts Discussed in Thread: UCD7138 , UCD3138 hi,
In the [LLCHBFirmware-1.2], there is a UCD3138A and a UCD3138A-Sunflower.
Would you please tell me on function what`s the difference between these 2 ?
As I cannt find any…
Hi Robin,
There is a diode symbol within the UCD7138 block diagram but this is just symbolizing the function of UCD7138. There isn't a physical diode between Vout and the transformer.
Best Regards,
Ben Lough
Hi, Rock,
It is nice to know you. UCD3138 is very popular digital power controller able to control PFC, LLC, and SR. UCD7138 is a SR driver to optimize deadtime.
There are many application documents in the website. if you need more support, please…
Other Parts Discussed in Thread: UCD3138 , UCD7138 , UCD3138A The SR IDE function is used in Automatic Mode Switching With Hysteresis.
SR on time is fixed in Auto Config High.
Why the SR_VDS1/2 are need to be sense, and convert to SRDET1/2
What…
One more thing!
I notice that the UCD7138 hook up at the rectifier side has 2 different ground connections.
See the attached pdf. PMP20289LLC_SYNC_GND.pdf
How is that going to work?
In case of EPC3024 especially, the drain side has to be at the…
Part Number: PMP21842 Other Parts Discussed in Thread: UCD7138 , UCD3138A , PMP , PMP21309 , PMP20978 What are the highlights should I look into this PMP21842 12V/500W LLC design? What are the benefits this design gets from LMG3410 GaN device and UCD3138A…
