Part Number: UCC35705 The datasheet states that the device is a voltage mode 4MHz PWM controller but the oscillator is only spec'd to 1MHz.
Where does the 4MHz come from?
Thanks
Hi Echo! I'm glad to hear that your heating issue has been resolved, but there is still a larger issue here. You mention that the chip automatically fails after a few minutes and stops outputting PWM pulses. Can you check the VFF pin voltage? If it is…
Other Parts Discussed in Thread: UCC35705 , TL431 how can i set the output voltage of my converter using this IC(UCC35705)?What's i have to connect at the FB pin, the output of an error amplifier or the output voltage? i can't understand where is the…
Hi Jeyaprakash
I do not see any PSPICE model for the UCC25706,UCC35705,UCC35706 devices either ?
Have tou found a model for these parts outside of TI?
Regards
Peter
Hi Jerry,
The UCC35705 is a high speed PWM controller and can run at up to 4MHz, http://www.ti.com/product/UCC35705
Hopefully this will be suitable for your application.
Regards
Peter
Part Number: LM5021-Q1 Other Parts Discussed in Thread: LM5021 , UCC35706 , UCC35705 , UCC25706 , UCC25705 , UC3525A , UCC27517 Hi TI Team
I'd like to know the CS function of LM5021-Q1.
Could I disable this function?
I need a PWM IC could work on voltage…
Hi Kensuke-san,
The UC2825 is an older device based on bipolar process, the UCC35705 is a newer device with a 4MHz Fmax with voltage mode control.
Regards
Peter
Part Number: UC3843 I need support about the choice of the right controller for a high power (2kW) step-down converter with adjustable output voltage. The application is DC Variac (chopper).
- Topology is: non-synchronous buck
- The goal is to control…
Other Parts Discussed in Thread: UCC35706 Hi,
I am Trying to make one DC to Dc convertor with UCC35706, strangely all the four devices I had is gone bad ie PIN 3 Vff shows zero Volt.
The schmatic design is taken from another working design. Its resonant…