Answered

• UC1843-SP: package dimensions & material

  

  Tomohiro Tanaka

  Resolved

  Part Number: UC1843-SP Could you let me know the package information as follows? P/N: 5962-8670410VPA ・Package material/ base plating /plating (ex. Ceramic(Alumina)/Ni/Au ・Lid material/ base plating /plating (ex. Covar/Ni/Au ・Package cavity wall thickness…

  • Resolved

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

• UC1843-SP: Component Mass and Juntion to Case Thermal Resistance

  

  Aidan Watson

  Resolved

  Part Number: UC1843-SP Hello, for this part: 5962-8670402VXA I would like to know: mass Junction to case thermal resistance Heat sinking side (top/bottom) Thank you. Aidan Watson

  • Resolved

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

• UC1843-SP: VREF Good Logic

  

  Steve Widener

  Resolved

  Part Number: UC1843-SP In the block diagram of the subject device, there is a "VREF GOOD" logic block shown that connects to the inverting input of a 3-OR gate. What are the rising and falling thresholds of this VREF Good block (monitoring VREF)…

  • Resolved

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

• UC1843-SP: VC and VCC isolation

  

  Steve Widener

  Resolved

  Part Number: UC1843-SP Can the Vc be powered from a separate supply from Vcc? Are there any limitations on those voltages relative to each other?

  • Resolved

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

• UC1843-SP: Comparison Space grade PWM Controllers

  

  Nesh Johny

  TI Thinks Resolved

  Part Number: UC1843-SP Other Parts Discussed in Thread: UC1845 , UC1843 , , UC1845-SP Hi Sir, I wanted to use space grade PWM controller for forward converter with current mode control. There are many space grade ICs available like: UC1843, UC1845 what are…

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

• UC1843-SP: the potential of Lid about UC1843-SP

  

  Takafumi Yamazaki

  TI Thinks Resolved

  Part Number: UC1843-SP I would like you to reply about following question. Is the potential of Lid about UC1843-SP Open? or Grand ? Or else?

  • over 6 years ago
  • Space & High Reliability (Read Only)
  • Space & High Reliability Forum (Read Only)
Answered

• UC1901-SP: Avoiding the 2.5V Feedback Offset in Reference Design UC1843BEVM-CVAL

  

  Vince Jison

  Resolved

  Part Number: UC1901-SP Other Parts Discussed in Thread: UC1843BEVM-CVAL , UC1901 , UC1843-SP , UC1843 , UC1843B-SP Hello, I am designing a power supply using the UC1901-SP for isolated feedback. In the reference design for the 'UC1843BEVM-CVAL' eval board…

  • Resolved

  • over 1 year ago
  • Power management
  • Power management forum
Answered

• UC1901-SP: CC/CV Without Opto-coupler

  

  Karthik Venkateshaiah

  Resolved

  Part Number: UC1901-SP Other Parts Discussed in Thread: UC1843-SP , Hi, I am designing a DC-DC fly-back converter using UC1843-SP PWM controller for space application. The use of Opto-coupler is prohibited in my application hence feedback control is done with…

  • Resolved

  • over 3 years ago
  • Power management
  • Power management forum

• Spice Model for UC1843-SP Internal Error Amp

  

  Luis Martinez-Mitjans

  Hi, I'm looking for an accurate gain-phase model for the error amp inside the 1843 PWM for use on a space product. Thanks

  • over 11 years ago
  • Power management
  • Power management forum
Answered

• RE: UC1843B-SP: Sawtooth generator for voltage mode UC1843B PWM

  

  Giacomo Cerfeda

  Resolved

  Hi Daniel, in the EVM files of the UC1843-SP I can see anything to help me for generating the sawtooth. Moreover, I do not understand how is it possible to divide down the clock generated by the PWM. Thanking you in advance Giacomo

  • over 3 years ago
  • Power management
  • Power management forum

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