Part Number: UCC28070-Q1 Hi,
The datasheet specifies below Dmax value for Dmax typ 95% case,
I need Max/Typ/Min for specific Dmax such as 90% typ case.
Can you provide Dmax value for Min/Max for specific typ case? Or formula?
Min XXX %
Typ Set specific…
Other Parts Discussed in Thread: UCC28180 , UCC28070A , UCC28070-Q1 , PMP22220 , UCD3138 , PMP8740 Hello TI Team,
We are planning for an OBC for small vehicles in automotive grade.
Kindly share some reference desing for below requirements.
Output Power - …
Part Number: UCC28070-Q1 Other Parts Discussed in Thread: UCC27524 , UCC28070 Hello Team,
We are using UCC28070 PFC IC and UCC27524 Driver IC for Inhouse on board charger development project.
The testing is in work.
We are not getting the PFC output…
Hello Massimo,
Thank you for your question on synchronization for a 4-phase PFC using two UCC28070 controllers.
I searched through TI's clock generator portfolio and found that all of the IC's in this category are designed for multiple 10's and 100's…
Part Number: UCC28070-Q1 Other Parts Discussed in Thread: UCC28070 Dear,
I used UCC28070 to design 6.6KW project, when input voltage is 260V, full loading ; I found the input current waveform was abnormal, please refer to the attachment waveform. i want to…
Part Number: UCC28070-Q1 Other Parts Discussed in Thread: UCC28070 Hi all, I am looking at the datasheet of the PFC controller (UCC28070-q1). There is an equation which i didn't understood Vac=73*Vrms --(Page 23)
I couldn't find any relation like this…
Hello Keith,
The UCC28070 controller does not distinguish between the two PFC topologies (or any other topology for that matter). It merely drives its outputs (basically the GDA and GDB pins) based on the signals present on all the inputs (basically all…
Part Number: UCC28070-Q1 Hi team expert,
I noticed there is a frequency dithering function in UCC28070-Q1. Customer asks me if fpwm=65kHz, whether they could adjust the frequency dithering rate of change in fPWM as 0.1kHz, 0.5kHz and etc? If so, is it just…
Part Number: UCC28070-Q1 Hi,
We found that PWM GDA/GDB shut down after AC Vin drop for a while, but the Vsense voltage should be higher than 0.75V at that point. Not sure if Vinac or others can cause PWM shut down. Please advise the PWM on/off control logic…
Part Number: UCC28070-Q1 Other Parts Discussed in Thread: UCC28070 We used UCC28070 as controller of interleaved boost PFC. Found unit failed after high/low temp cycling. One of the current transformer core cracked, please advise the reaction on two phase if…