Part Number: UC3842 Other Parts Discussed in Thread: UCC24630 , LM2903 , LM8364 Hi Team,
Can I have some classical schematic suggestion for input under/over voltage protection based on UC3842? Tks a lot.
BR,
Xiaobing (Eric)
Hi Deepak,
Thanks for your interest in LM5030. I would take a look at using a undervoltage sensing circuit like LM8364 to drive the SS pin. At the input, you can place a pulldown resistor which would trigger the undervoltage and the LM8364 will pull…
Part Number: UCC28911 Other Parts Discussed in Thread: LM8364
Dears:
Customer will evaluate UCC28911 and have some issue as below:
A. The precision of low voltage protection.
b. The precision of current-limiting protection.
c. The precision of constant…
Hi Doi-san,
Yes, UCC28056 has brown-in but does not have brown-out. An external circuit would be required to implement a brownout function. An example can be found in PMP20612 reference design using LM8364: www.ti.com/.../tidrqy2.pdf . You can use this…
hyster.pdf
Hi Kuo,
Please take a look how hysteresis was implemented with the LM8364 on the attached document.
This can be used to pull VSENSE low on the UCC28180 and shut off the PWM.
Regards
John
Hi Rajesh,
Thanks for your interest in UCC28C44. This device will not turn off until VDD hits its UVLO threshold which is 9V typical. What you can do is use an external circuit connected to the COMP pin to pull COMP low when Vin is less than 62V to disable…
Part Number: UCC28180 Other Parts Discussed in Thread: PMP20612 , LM8364 Can anyone tell me if the addition of the diode across the inductor and boost diode would take care of the issue of no overcurrent protection?
I am experiencing the same issue that…
Other Parts Discussed in Thread: LM8364 , LM8365 Hello,
I need to add a delay to a LM8364 circuit, but I can't spin the PCB. I've found the LM8365 and need to know if the N/C pin (Pin #4) is internally connected. My plan is to modify existing…
Other Parts Discussed in Thread: LM8364 , TPS3847 Hi,
I'm trying to find a micropower under voltage sensing IC similar to LM8364 but with a wider input voltage. My target is to monitor the voltage of a 2-cell Li-Ion battery, so the Input voltage has to…
Hi Kuramochi-san,
There is no problem by putting down the SS when voltage drop, actully the UCC24630EVM-636 is realize UVLO in this way: voltage supervisor device LM8364 is used to accurately set the turn-on voltage of the power supply. The output of LM8…
