• LM25141-Q1: LM25141 softstart query

  

  Shreeharsha kandlaje

  TI Thinks Resolved

  Part Number: LM25141-Q1 Other Parts Discussed in Thread: LM25141 Hello, could you please provide the tolerance range for the internal voltage reference(1.2V) mentioned in the datasheet of LM25141.

  • 2 months ago
  • Power management
  • Power management forum

• LM25141-Q1: LM25141 Feedback voltage

  

  Shreeharsha kandlaje

  TI Thinks Resolved

  Part Number: LM25141-Q1 Could you please confirm whether the below feedback voltage rating is considering all temperature and other boundary conditions?

  • 2 months ago
  • Power management
  • Power management forum

• LM25141-Q1: LM25141-Q1

  

  Shreeharsha kandlaje

  TI Thinks Resolved

  Part Number: LM25141-Q1 Hello, i have a generic question: Do you have any guide for selecting the soft start time( or capacitor value) during the initial design of the power supply? i have generally selected this value with thumb rule. Do we have a guidance…

  • 2 months ago
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• LM25141: LM25141

  

  Shreeharsha kandlaje

  TI Thinks Resolved

  Part Number: LM25141 calculation for softstart calculation for LM25141

  • 4 months ago
  • Power management
  • Power management forum

• LM25141-Q1: ESR of cap

  

  Amelie Zheng

  TI Thinks Resolved

  Part Number: LM25141-Q1 Other Parts Discussed in Thread: LM25141 Hi Team, Customer are doing low-temperature start-up experiments and found that this chip with 3.3V cannot start at low temperatures. Customer is worried that the phase margin of our loop is too…

  • 2 months ago
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• LM25141: schematic check

  

  GARETH OU

  TI Thinks Resolved

  Part Number: LM25141 Hi Could you help check the LM25141 schematic as below and any need to adjust ,Thanks LM25141.pdf

  • 4 months ago
  • Power management
  • Power management forum
Answered

• LM25141: LM25141 Does not turn on with light load (Vout=0)

  

  Borodin Kirill

  Resolved

  Part Number: LM25141 Vin = 20V, Vout=12V, L = 10uH, Rcurrent sense = 5mOhm, Cout=300uF, Iout - not meaning, 450kHz FPWM, SoftStart = 50ms, Hicuup Fault=60ms. EN pin- button All values ​​correspond to Exel Ref.des (LM25141-Q1 Quickstart Tool - revA2). Compensation…

  • Resolved

  • 7 months ago
  • Power management
  • Power management forum

• LM25141-Q1: efficiency at light load

  

  Betty Guo

  TI Thinks Resolved

  Part Number: LM25141-Q1 Other Parts Discussed in Thread: LM25148-Q1 Hi team, customer use LM25141-Q1 to power on DDR, the current is 16A. because the DDR is in sleep mode, the current at sleep is 70mA, customer need high efficiency at light load. so,…

  • 4 months ago
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• LM25141-Q1: cold start problem and how should we input the ESR for the quickstart tool

  

  guizhang chi

  TI Thinks Resolved

  Part Number: LM25141-Q1 Other Parts Discussed in Thread: LM25141 , 5736.LM25141-Q1 Quickstart Tool - revA2.xlsm we met the cold start problem at -40 degrees. so i guess maybe the paramter is not good enough at low temperautre . I am using the LM25141-Q1…

  • 2 months ago
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• LM25141-Q1: Inductor whistle when in light load

  

  Amelie Zheng

  TI Thinks Resolved

  Part Number: LM25141-Q1 Hi Team, My customer now use LM25141-Q1 in CPU. When in light load (output current is less than 0.2A), the inductor whistle. Customer change the inductor from 3.3uH to 8.2uH. But the whistle is still existing. Customer also would…

  • 4 months ago
  • Power management
  • Power management forum

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