Part Number: UCC28C45 Hello,
I have a below requirement.
Input voltage: All range battery input i.e. 14.4V to 154V input
Output Voltage: 2.8VDC
Output Current: 0.1A to 2.5A (can switch immediately)= Wattage of ~9W
Topology: PSR, Flyback
Ripple of +/-50mV…
Other Parts Discussed in Thread: UCC28C45 , UC3714 , UC2714 for Low side Active clamp forward converter can i drive both N-MOSFET and P-MOSFET (Q1,Q2) using UCC28C45 ?
if yes, please suggest solution for generate the dead time Tdel as mentioned in below…
Part Number: UCC28C45-EP Hi,
Good Day.
On the component datasheet, an example application schematic (sheets 9 & 10 – Figure 4) shows an RC circuit (see circled in red below) implemented between the Current Sense pin (#3) and the Primary of Transformer…
Part Number: UCC28C45 Hi Team,
For the UCC28C45 controller. Is it normal for the controller to pulse the output during no-load conditions?
The first image is with 20mA load, then 40 mA, and the final one that is steady 5V output is 60mA load.
Thanks…
Part Number: UCC28C45 Other Parts Discussed in Thread: TL431 Team,
Customer has made a Flyback design based on UCC28C45: Vin : 85 to 265V, Vout = 17.5V, Iout = 0.7A The design shows on the COMP output an oscillation tendency or instability depending on the…
Part Number: UCC28C45-Q1 Other Parts Discussed in Thread: LM5155-Q1 , LM3481-Q1 , UCC28C45 , UCC28C55 , LM5155 , LM3481 Hi Expert,
Our customer is developing OBC/DCDC platform. I see both UCC28C45-Q1 PWM controller and LM3481-Q1 or LM5155-Q1 flyback can be used…
Part Number: UCC28C45 Hi team,
Could you pls share the equation of UCC25C45 RT/CT and fsw relationship?
Datasheet figure 1 only showed some configurations but my customer want a detail equation.
I found a equation at below link, https://e2e.ti.com/support…
Part Number: UCC28C45 Team,
Customer implemented the below slope compensation (R RAMP = 10kΩ).
When the input voltage increases then there is a state where the controller works with two different duty cycles. The enclosed video shows the voltage input increase…
Part Number: UCC28C45
Team,
See below an excerpt from the webench generated design for the below spec: Flyback, Vin : 85 to 265V, Vout = 17.5V, Iout = 0.7A What is the use of the Qsc transistor in this design? Can you please share some light on the…
Part Number: UCC28C45-EP
Hello Team,
For using this part to drive a FET on the primary side of a transformer. Would you recommend having an RC filter on Pin 6 of this part? The Current Sense Pin. see in the Datasheet on page 10 there is an RC on Pin 6…