Answered

• UC1825: Differences between UC2825 and UC3825

  

  Alpha H

  Resolved

  Part Number: UC1825 Other Parts Discussed in Thread: UC2825 , UC3825 , Hey folks, Quick question, what are the main differences between the UC1825, UC2825, and UC3825. Is it just that the UC1825 is available under different "high reliability" options? Which…

  • Resolved

  • over 4 years ago
  • Power management
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• UC3825: UC3825 Output issues

  

  Rock Su

  TI Thinks Resolved

  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…

  • over 5 years ago
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• UC3825: To configure the Error amplifier

  

  Gopinath R

  TI Thinks Resolved

  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…

  • over 4 years ago
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• UC3825: UC3825DWTRG4 max voltage rating in each PIN OUT

  

  Red Yen

  TI Thinks Resolved

  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

  • over 4 years ago
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• UC3825: How does error amplifier works

  

  Gopinath R

  TI Thinks Resolved

  Part Number: UC3825 I am using UC3825.I want to understand about the internal operation of the error amplifier.Can you explain it ?

  • over 4 years ago
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• UC3825: Switching frequency

  

  Michiaki Tanii

  TI Thinks Resolved

  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

  • over 4 years ago
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• UC3825: uc3825 400v SMPS

  

  ross atkinson

  TI Thinks Resolved

  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…

  • over 5 years ago
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• UC3825: Device Recommendation

  

  Xing He

  TI Thinks Resolved

  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…

  • over 4 years ago
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Answered

• UC3825: Power management forum

  

  Robin Zhou

  Resolved

  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…

  • Resolved

  • over 5 years ago
  • Power management
  • Power management forum
Answered

• UC3825: The phase of output A & B

  

  Chun Hung Chen

  Resolved

  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

  • Resolved

  • over 5 years ago
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