• LM5140-Q1: Phase and Gain analysis

  

  Sunset

  TI Thinks Resolved

  Part Number: LM5140-Q1 Hello Team, we are using the LM5140-Q1 with fixed 3.3V 5V output. Considering that the feedback resistors are internal, what would be the method you would recommend to make at system level, a phase and gain analysis for the control…

  • 19 days ago
  • Power management
  • Power management forum

• LM5140-Q1: Effective bandwidth-limiting capacitance internal FB resistors

  

  Piotr F.

  TI Thinks Resolved

  Part Number: LM5140-Q1 Hello TI Team, What are effective bandwidth-limiting capacitance and internal FB resistors values? This is needed for Error Amplifier analysis done by my customer (values needed to solve equations form datasheet chapter 8.2.2.10…

  • 2 months ago
  • Power management
  • Power management forum

• LM5140-Q1: schematic review of LM5140-Q1

  

  Betty Guo

  TI Thinks Resolved

  Part Number: LM5140-Q1 Hi team, could you help to review the LM5140-Q1 schematic? the application is cluster, battery input is 12V. thank you in advance. LM5140-Q1.pdf

  • 6 months ago
  • Power management
  • Power management forum

• LM5140-Q1: LM5140 Max Current Capability

  

  Mahendra A G

  TI Thinks Resolved

  Part Number: LM5140-Q1 Hi team, What is the maximum output current that can be achieved at both Vout1(3.3V) and Vout2(5V) when the input is 12V, Thanks Mahendra

  • 7 months ago
  • Simulation, hardware & system design tools
  • Simulation, hardware & system design tools forum

• LM5140-Q1: Power issue:

  

  Harsh b

  TI Thinks Resolved

  Part Number: LM5140-Q1 Hi Team, we are using this LM5140 for some product, But in some of boards we are getting sudden power down issue, after which board will not turn on. We are getting VDDA = 0.8V,VCC= 0.8V, and HB =0.8V. we are facing this issue in…

  • 6 months ago
  • Power management
  • Power management forum

• LM5140-Q1: Where are the feedback grounds layouted to

  

  Hubert Geiger

  TI Thinks Resolved

  Part Number: LM5140-Q1 Dear Sir/Madam, Dear Texas Instruments Team, I build a converter with the LM5140-Q1. I have seen your evaluation board, described in the SNVU521-July 2016. In your eval board, you create 3.3V and 5V by connecting the FB1 and FB2…

  • 5 months ago
  • Power management
  • Power management forum

• LM5140-Q1: Under Voltage Lockout (UVLO)

  

  Albin Dennevi

  TI Thinks Resolved

  Part Number: LM5140-Q1 Other Parts Discussed in Thread: TPS3710-Q1 I'm using LM5140QRWGTQ1 with pretty much the example schematics. VOUT1 outputs 3.3V, VOUT2 outputs 5.0V. EN1 is connected to VCC. I'm using LM5140QRWGTQ1 with pretty much the example…

  • 6 months ago
  • Power management
  • Power management forum

• LM5140-Q1: LM5140-Q1

  

  PowerSystemsEngineer

  TI Thinks Resolved

  Part Number: LM5140-Q1 I have got Troubles with the VCCX pin, pin 6 of LM5140-Q1. When I leave this pin Floating, the converter works. So far so good. In the datasheet it is written on page 3: "6 VCCX I Optional input for an external bias supply…

  • 11 months ago
  • Power management
  • Power management forum

• LM5140-Q1: How to reduce the high frequency ripple

  

  Mahendra A G

  TI Thinks Resolved

  Part Number: LM5140-Q1 Hi team, I am facing an issue with the HF ripple on the dual buck output rails, the ripple is not reducing even after changing the COMP circuit to the suggested values, the ripple is 340mVpk-pk on 3.3V output rail, with 330MHz…

  • 6 months ago
  • Power management
  • Power management forum
Answered

• LM5140-Q1: ISO7637-2 test

  

  Phil Yi40

  Resolved

  Part Number: LM5140-Q1 Hi, expert for LM5140-Q1, I believe the device has passed ISO7637-2 test; would you please share the test report? Our customer is asking for it. Thanks! Phil

  • Resolved

  • 9 months ago
  • Power management
  • Power management forum

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