Part Number: UC1846 Hello,
I'm trying to use an external error amplifier (the ADUM3190) to manage voltage reading on the secondary side of a flyback converter and feeding it back to the input of the UC1846.
Are there any reference designs to show…
Part Number: UC1846-SP Two questions regarding the UC1846-SP:
1) The datasheet mentions a couple different peak current values for the output used to drive the gates of power MOSFETs. Page 13 mentions 1.5A peak, 0.5A average while Page 22 mentions 2A…
Part Number: UC1846-SP Has anyone simulated this part in TINA? I used it and seems like the switching frequency is off in the model. To get a switching frequency of 100kHz, I had to use RT = 10k, CT = 1nF. According to equation five, this should get f…
Part Number: UC1856-SP Other Parts Discussed in Thread: UC1846 , Tool/software: In PSpice for TI only the UC1846 is available. The example only works for 15V-18V input.
I need to understand how to update the model for 40V input.
I'm also looking for an…
Part Number: UC1846 Hi all,
My customer is working on a new design with UC1846 and would like to know if we have a spec available for the minimum pulse width for a valid SYNC signal.
Thank you.
Jon
Part Number: UC1846 Hi,
I have a design in which two UC1846 ICs are operated in Master/slave mode with SYNC connected directly. Normal operation of the ICs is as shown below
However, under certain conditions, the oscillator of the master IC gets distorted…
Part Number: UC1846-DIE Other Parts Discussed in Thread: UC1846 I am using the UC1846 PWM IC (die form) on which the resistor value installed at the RT pin was incorrectly set at 12 ohms. The target value was in the 10 to 13k range with the error caused…
Part Number: UC1846-SP Hi,
I'm trying to set the switching frequency of my flyback converter using UC1846A-SP.
I need to allow %48 duty cycle and I need fsw=300kHz. Firstly, ı understand that switching frequency is equal to the oscillator frequency and…
Part Number: UC1846 Hi Teams,
My customer want to use UC1846 to design a 500W DC/DC buck/boost converter.
VIN=40V~120V, VOUT=49V~67V, Eff. need ~95%.
Q1. He wants to use SiC MOSFET SCTH90N65G2V-7 with UC1846, is this can work? Or have any suggestions of…
Part Number: UC1846-EP Other Parts Discussed in Thread: UC1846 , UC1825-SP It has been seen that upon power on of UC1846-EP, the Push-Pull generates Short circuit on primary lines causing high input current and turn off of other DCDC converters on the…
