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Showing 23 results View by: Thread Post Sort by
  • LM5127-Q1: Output capacitor selection using quickstart calculator

    shihui xu
    shihui xu
    TI Thinks Resolved
    Part Number: LM5127-Q1 Tool/software: some questions about the output capacitor selection parameter: 1. What frequency does the ESR value here refer to? 2. How to calculate the ESR value when I put several different cap value of mlcc and e-cap in…
    • 10 months ago
    • Power management
    • Power management forum
  • LM5127-Q1: LM5127-Q1 light load efficiency

    shihui xu
    shihui xu
    TI Thinks Resolved
    Part Number: LM5127-Q1 We set CH1: Boost,CH2 and CH3 as single phase buck. There's a use case: EN1=EN3=L EN2=H Iout2 is about 10mA~300mA. How can we estimate the light load efficiency of LM5127-Q1 CH2? Vin=12V fsw=400KHz, Vout2=3.3V, and the light…
    • over 2 years ago
    • Power management
    • Power management forum
  • LM5127-Q1: LM5127-Q1 Ivccx

    Imelda Zhang
    Imelda Zhang
    Part Number: LM5127-Q1 Hi Expert, Thanks for your help! Recently my customer is using LM5127-Q1 in their project. They are asking the input current of VCCX 5V. From my perspective,If VCCX > 4.5 V, VCCX is internally connected to VCC. From fig 7…
    • over 2 years ago
    • Power management
    • Power management forum
  • LM5127-Q1: Layout guide

    shihui xu
    shihui xu
    TI Thinks Resolved
    Part Number: LM5127-Q1 The screenshot below is from the LM5127-Q1 datasheet chapter 11.1. I was wondering why the layout guide here ask us to use a low-side MOSFET whose rDS(on) is greater than 8ohm, doesn't it cause more conduction loss?
    • over 2 years ago
    • Power management
    • Power management forum
  • Answered
  • LM5127-Q1: Power up again before fully discharged

    Peter Xu
    Peter Xu
    Resolved
    Part Number: LM5127-Q1 Hi team, When we use LM5127, keep it running and open BATT, quickly power on again before the 3.3V power of SW3 fully discharged. Will there be some unknown problems(voltage unstable, breakdown) in LM5127? Regards, Peter
    • Resolved
    • over 2 years ago
    • Power management
    • Power management forum
  • Answered
  • LM5127-Q1: Deep Sleep Mode

    Masatoshi Oguri
    Masatoshi Oguri
    Resolved
    Part Number: LM5127-Q1 Hello, There is "Deep Sleep Mode". For what situation is this feature good? In what situation does the device enter this mode? Thank you. Regards, Oguri (TIJ automotive FAE)
    • Resolved
    • over 3 years ago
    • Power management
    • Power management forum
  • LM5127-Q1: LM5127-Q1 LTspice Error

    Samet ALTUN
    Samet ALTUN
    TI Thinks Resolved
    Part Number: LM5127-Q1 I want to simulate LM5127-Q1 spice model in LTSpice. But I get error message that ; How Can I solve this problem ?
    • over 4 years ago
    • Power management
    • Power management forum
  • Answered
  • LM5127-Q1: Sleep Mode for Boost

    Masatoshi Oguri
    Masatoshi Oguri
    Resolved
    Part Number: LM5127-Q1 Hello, There is Sleep Mode for VOUT1 when it is configured as boost. This is explained in the pin description in p.5 of the datasheet as "When CH1 is configured as a boost, it is allowed to enter sleep mode when SLEEP1 is greater…
    • Resolved
    • over 3 years ago
    • Power management
    • Power management forum
  • Answered
  • LM5127-Q1: forced diode emulation at start up

    Masatoshi Oguri
    Masatoshi Oguri
    Resolved
    Part Number: LM5127-Q1 Hello, The device starts up with forced diode emulation. Why? Is it for Vout pre-biased start up? Thank you. Regards, Oguri
    • Resolved
    • over 3 years ago
    • Power management
    • Power management forum
  • Answered
  • LM5127-Q1: LM5127-Q1 Triple Buck Converter or Pre Boost Converter and 2 independent buck converter issue

    Samet ALTUN
    Samet ALTUN
    Resolved
    Part Number: LM5127-Q1 I want to use this PMIC is that LM5127-Q1 for our infataiment cluster. Our clusters are used for Truck. And truck battery voltage is typically 24V.(18V-32V range) But I want to get three output voltage from 24 V is that 12V, 5V…
    • Resolved
    • over 4 years ago
    • Power management
    • Power management forum
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