• LM5127-Q1: LM5127-Q1 light load efficiency

  

  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 load…

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

• LM5127-Q1: LM5127-Q1 Ivccx

  

  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 7-3 the…

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

• LM5127-Q1: Layout guide

  

  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 1 year ago
  • Power management
  • Power management forum
Answered

• LM5127-Q1: Power up again before fully discharged

  

  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 1 year ago
  • Power management
  • Power management forum
Answered

• LM5127-Q1: Deep Sleep Mode

  

  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 2 years ago
  • Power management
  • Power management forum
Answered

• LM5127-Q1: Sleep Mode for Boost

  

  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 2 years ago
  • Power management
  • Power management forum
Answered

• LM5127-Q1: forced diode emulation at start up

  

  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 2 years ago
  • Power management
  • Power management forum

• LM5127-Q1: LM5127-Q1 LTspice Error

  

  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 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

  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 3 years ago
  • Power management
  • Power management forum
Answered

• LM5127-Q1: Output Discharge capabilities

  

  David Shumate

  Resolved

  Part Number: LM5127-Q1 Hi Team, If the output on a buck configuration of the LM5127 spikes above the regulated voltage because of external influence can you comment how the part will react? I ran some simulations on SPICE to emulate this condition and…

  • Resolved

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

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