Part Number: UC3825 In my application,i want to charge the capacitor to various voltage levels(100 to 500V) through a full bridge inverter and diode bridge rectifier.The output pulses(Out A and Out B) of the UC3825 are given to the inverter.
So,I want…
Part Number: UC3825 Hi Support team
May I have your help to check the ABSOLUTE MAXIMUM voltage RATINGS which was NOT define in D/S
PIN5 RT
PIN6 CT
PIN11 VOUTA
PIN12 PWR_GND
PIN14 VOUTB
PIN16 VREF5.1
thanks a lot
Part Number: UC3825 Dear colleague,
Our customer encountered a UC3825 issue:
When 2Pin voltage exceed 7Pin(Ramp)+1.25V(Internal), PWM output will change, just output A has output or output B has output.
Waveform as below:
Yellow: OUTA output waveform Blue…
Part Number: UC3825 Hi team,
Could you provide the equation for frequency configuration with RT, CT ?
And are there any application report to know more detail to design circuit with UC3825 ?
Thank you and best regards,
Michiaki
Part Number: UC3825 Other Parts Discussed in Thread: UCC27211 , LM5036 Hi Team,
My customer wants to design a buck converter, they would like to choose a device like UC3825 which has the Vref pin. So that they can adjust the reference voltage.
And duty…
Part Number: UC3825 Hi
I have designed a push pull SMPS with a 21.9v input and +/-400v output with an 80khz switching, with voltage mode control and type 3 feedback loop. The output is 18mA at 400v and 55ma at -400v, but I can not get the ripple below 5v…
Part Number: UC3825 Dear TI experts,
There is a question about UC3825. Our customer use it in a Ultrasonic massager. Poor finished product testing. Some products are weak in ultrasound, some products are not ultrasonic and the chip is damaged.
I tested…
Part Number: UC3825 Other Parts Discussed in Thread: UC3823 Hi TI team
I'd like to know output A & B of UC3825.
Are they reverse each other, or phase difference angle??
Thanks
Part Number: UC3825A Other Parts Discussed in Thread: UC3825 ,
This is an applied circuit diagram, with pins 11 and 14 connected to the gate driver and full bridge MOS to obtain the final voltage output in the upper left corner. And this voltage output…