Part Number: UC1843A I have inherited a 45 KHz current mode converter. Input voltage is 25V +/- 7V. 71V is generated by way of a 135 uHy inductor that charges seven 1000 Al Electrolytic (YES - 7 - SEVEN) - tangent of loss angle is 0.08, so ESR per is…
Part Number: UC1843A I'm getting the dreaded "time step too small" error while trying to simulate a flyback controller using the UC1843A-SP model downloaded from the product page. The same circuit, but using the built-in LT1243 controller, is working…
Part Number: UC1843A-SP For the HKU pkg (5962P8670409VYC), I see that the lid is metallic and connected to the thermal pad. Is the thermal pad internally connected to GND?
Part Number: UC1843A-SP Other Parts Discussed in Thread: UC1843A Hi,
I am planning to use UC1843A-SP for the flight model in my design. Before using it, I will use UC2843AN or UC2843N for the prototype instead of UC1843A-SP. I didn't see detailed information…
Part Number: UC1843A What is the difference between UC1843AJ and UC1843AJ883B? More specifically what does the B represent? I saw the relatively same question in this forum where it was announced no difference but that question didn't reference the B designator…
Hi,
15% period. the fosc is around 300kHz, the PWM switching frequency fs is half of fosc.
May I know 300 kHz is fs or fosc? fosc should be set below 500kHz.
the fosc of UCCx8C4x can be up to 1 MHz
Part Number: UC1843A Other Parts Discussed in Thread: UC1843 Is there a frequency response model available for the UC1843/3843 PWM? Have you any recommendations for modelling the device?
Part Number: UC1843A-SP Other Parts Discussed in Thread: UC1843A , Hi,
I'm trying to find some formula and technical notes about how to design feed-forward compensation network for my dc-dc application.
Please provide me some technical note to do it…
Part Number: UC1843A In the process of doing a DPA on a 5 lot sample of TI’s MPN: UC1843AMDREP; a recent discovery from our test vendor has shown a variation in the design of the part (at least from the stamp on the bottom side of the parts) see below…