• UC3845A: short circuit protection

  

  Pankaj Misra

  TI Thinks Resolved

  Part Number: UC3845A Other Parts Discussed in Thread: UC3845 , UC2845 I have query regarding short circuit protection from UC3845 or UC2845 controller. What we observed that peak current went high and did not get burst/hiccup mode operation. As per our…

  • over 1 year ago
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Answered

• UC3845A: Failure modes for PWM Controller

  

  Samir Castineira

  Resolved

  Part Number: UC3845A I am looking for reliability data for the UCx84x PWM controller. Can you please provide the common failure modes for this controller?

  • Resolved

  • over 2 years ago
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Answered

• UC3845A: DC/DC load regulation

  

  Bohdan Atamanchuk

  Resolved

  Part Number: UC3845A Other Parts Discussed in Thread: UC3845 , UC3843 , UC3842 , , UC3843A Non-isolated HV DC/DC (24VDC to 600VDC) with voltage closed loop control does not hold load. Output voltage starts dropping with increased load even though DC is…

  • Resolved

  • over 2 years ago
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• UC3845A: UC3845

  

  Adarsh Kumar

  TI Thinks Resolved

  Part Number: UC3845A Dear Sir, I design a buck converter Input-40-90V, Output 12V,10A. I used a Input capacitor 220uF 100V , I face a problem during testing at Input-84V, Output 12V,10A. that the input capacitor is degraded. why this happned, …

  • over 2 years ago
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• UC3845A: Does UC3845A have OC protection when start-up?

  

  Wiky Liao

  TI Thinks Resolved

  Part Number: UC3845A Hi Team, I am wondering UC3845A have overcurrent protection in start-up. If yes, how to accomplish. Thanks. Best Regards. Wiky

  • over 4 years ago
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• UC3845A: Reference Design for non isolated buck converter

  

  sathish kumar

  TI Thinks Resolved

  Part Number: UC3845A Other Parts Discussed in Thread: UC3845 , TL2842 Hi, We are designing a Buck converter output : 12V 10A, Input : 36V -72Vdc Can you please provide any buck converter reference deign for UC3845 IC. Regards, Sathishkumar…

  • over 3 years ago
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Answered

• UC3845A: Primary inductance of Flyback Transformer

  

  Atul Bhakay1

  Resolved

  Part Number: UC3845A Hi there, In various application notes I come across 2 formulae to calculate the primary inductance of a flyback transformer.. These 2 formula are given below :- a) Lp = (Vin min² x Dmax² x effeciency) / (2 x Freq x Po). where…

  • Resolved

  • over 5 years ago
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• UC3845A: Looking for Forward Converter Reference Designs

  

  Gui Kang Gui Kang

  TI Thinks Resolved

  Part Number: UC3845A Is there a version of data sheet or application note for both UC3845AN and UCC38C45P that provide details on forward converter design? Thank you for helping me.

  • over 5 years ago
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• UC3845A: Oscillator accuracy PPM

  

  Eddie Koh

  TI Thinks Resolved

  Part Number: UC3845A What is the accuracy of the oscillator in PPM?

  • over 6 years ago
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• UC3845A: specification change question

  

  Brian OConnell

  TI Thinks Resolved

  Part Number: UC3845A Noted that free-air operating temperature range has been reduced from -40°C to 85°C, and is now 0°C to 70°C. Need to know basis of this specification change. For future products, is this part number no longer recommended? Thanks…

  • over 7 years ago
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