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 Kobayashi-san,
Thank you for your interest in the UCC28070 PFC controller.
Since your design is targeted for high-line-only input range (170~264Vac), I strongly recommend that you use the revised inductor design procedure found in the UCC28070A…
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…
Part Number: UCC28070 Other Parts Discussed in Thread: UCC27324-Q1 , UCC27324 Hi TI Team,
I am using UCC28070 for interleaved PFC, Power 3.5KW
while testing we loaded 3.3KW using rheostat load but Power factor remains at 0.95 only kindly advice me what…
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: UCC28070 Hi,
We used UCC28070 on traditional boost PFC. It's found that the input current became unstable while the input voltage is higher than 250Vac. That is not related to loading as we changed…
Part Number: UCC28070-Q1 Other Parts Discussed in Thread: UCC28220-Q1 , UCC28070 Hi,
two questions about UCC28070-Q1.
1- Can you use this device as a boost controller in a dc-dc application? My customer was thinking on using UCC28220-Q1, but then they realized…
Part Number: UCC28070-Q1 Hi,
how can i calculate RIMO and RSYNTH if use a shunt resistor for current sensing instead of a current transform. In datasheet we just formula for CT.
