Part Number: UCC28C42 Hi Team,
I am doinjg simulation fdor the ucc28c42 accordance with ti webench schematic for vin 40v to 200v dc ang vout 12v 2a,
i m observing that circuit giving right sim results with 180v dc in but not with 40v, could u pleas…
Part Number: UCC28C42 Other Parts Discussed in Thread: UCC28070 Hi,
We are using UCC28C42 to generate an isolated 12V as well as a non-isolated auxiliary 12V. The input voltage is 400VDC (coming from a PFC stage), see the schematics below, the transformer…
Part Number: UCC28C42 As per datasheet, with
Rstart= 420k ohm , and Cvdd= 120uF,
Start up time calculated is mentioned as 7sec. I am not able to understand that calculation.
As per RC time constant, start up time is greater than 60 sec. How it is calculated…
Part Number: UCC28C42-Q1 Hello Team,
i have a query related to UCC28C42-Q1. There is some information reletad in electrical characteristics which i wanted to confirm.
In the PWM duty cycle, where VFB > 2.6 , then output of the ASIC duty cycle is 0 percent…
Part Number: UCC28C42 Hi,
We are using UCC28C42 floating buck converter to generate 15V output. The input is 3phase but i used single phase only to power this IC and circuit. We are facing problem that once we power ON the circuit the VDD voltage goes…
Hello Venkatesh,
Sorry for the delay. I still do not have updates from EDA yet.
As for the schematics, the UCC28C42 and the UCC38C42 are the same device. The only difference is their application (UCC28C42 is industrial while UCC38C42 is commercial). The…
Part Number: UCC28C42 Hi Everyone,
The datasheet of the UCCx8C4x gives a way to impliment soft start:
The diode is there to "forces a soft-start period each time the PWM goes through UVLO condition that forces VREF to go low. Without the diode, the capacitor…
Part Number: UCC28C42 Other Parts Discussed in Thread: UCC2806 Hi Everyone,
I'm using the UCC28C42 Peak Current Mode Controller and I tie the RT/CT pin directly to the output of the external clock (it can handle the sink current of the controller).…
Part Number: UCC28C44 Other Parts Discussed in Thread: UCC28C42 Hi expert,
My customer uses UCC28C44 in their products, but now they need replacements as the delivery shortage.
From datasheet, the only difference between UCC28C44 and UCC28C42 is the fsw…