Part Number: UC2845 Tool/software: I designed a flyback converter using the UC2845. The output meets the design specifications; however, when operating in Peak Current Mode, the duty cycle becomes highly inconsistent under all load conditions. Specifically…
Part Number: UC2845 Tool/software: Want to design a 2 switch forward output inductor using PQ geometry core. Appreciate guidance on the core selection and calculations.
Part Number: UC2845 Other Parts Discussed in Thread: LM2904 , Dear Expert
We use LM2904DR as UC2845 flyback voltage control loop ,and we found in some batch LM2904 output nosie could be unormal .
This is our LM2904 voltage control loop sch ,IN- (PIN2…
Part Number: UC2845 I have the UC2845AD8TR on my PCA parts list and this has been flagged as being placed on LTB status by TI.
Does TI offer a direct replacement for the UC2845AD8TR device ?
Part Number: UC1845 Other Parts Discussed in Thread: UC2845 Dear sir,
quick questions:
Q1: what is the difference between UC1845 and UC2845, except for temperature?
Q2: whether we have SOIC package of UC1845 now?
Nice day!
Regards,
Jack
Part Number: UC2845 Hi team,
My customer is using our UC2845. They find in their application the UC2845 and the MOS will all broken.
And they find there's burn mark on the Rcs.
So could you please help check the current limit for the ISENSE pin…
Part Number: UC2845 Tool/software: Pspice model of this controller throwing convergence issue, and voltage on the RT/CT is showing as 80V, In the spice circuit I am not applying 80V anywhere, here I am simulating a simple flyback converter with input…
Part Number: UC2845
Hi expert,
The UC184x devices are specified for operation from –55°C to 125°C,
the UC284x series is specified for operation from –40°C to 85°C,
and the UC384x series is specified for operation from 0°C to 70°C.
My customer…
Part Number: UC2845 Hi，
My customer have tested the UC2845 and found that our device have this function that under light load or no load the output frequency will decreased and enter into a low power consumption mode. But they cannot find this description…
Part Number: UC2845 Other Parts Discussed in Thread: UCC20225A-Q1 Hi Expert,
My customer traditionally use UC2845 as the controller for buck topo, the input voltage is 200V, o utput range is 80V to 160V, output current is around 15A. Now they need a…
