• [FAQ] TPS549A20: SMBus Device ID for TPS549A20, TPS53819A, TPS53915, and TPS53913

  

  Kadeem Samuel

  Part Number: TPS549A20 Other Parts Discussed in Thread: TPS53915 , TPS53819A How do I find the PMBus device ID for the TPS549A20? The command code 0xFC is used for PMBus self-discovery for the TPS549A20. The expected response is either 0x0089 or 0x0090…

  • 3 months ago
  • Power management
  • Power management forum

• TPS549A20: TPS549A20 automotive

  

  Dimitri Weigel21

  TI Thinks Resolved

  Part Number: TPS549A20 Hello, is automotive PPAP for TPS549A20 parts planned? Thank You.

  • 5 months ago
  • Power management
  • Power management forum
Answered

• TPS549A20: Can PMBUS pins being grounded when take TPS549A20 as a replacement of TPS548A20

  

  guanghua shangguan

  Resolved

  Part Number: TPS549A20 Other Parts Discussed in Thread: TPS548A20 , We encounter a supply shortage on TPS548A20 and consider replacing it with TPS549A20 which is with the PMBUS interface, besides some slight different default settings such as frequency…

  • Resolved

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

• TPS549A20: Things to consider if using this in place of TPS548A20

  

  user5018898

  Resolved

  Part Number: TPS549A20 Other Parts Discussed in Thread: TPS548A20 , Hi, I have an issue where i cannot get TPS548A20 and am looking at using the TPS549A20. I see the only difference is the PMBus capability. can i just leave the SDA and SCL connected to…

  • Resolved

  • 2 months ago
  • Power management
  • Power management forum

• TPS549A20: Vout Regulation in Light Load

  

  Russell Wetherley1

  TI Thinks Resolved

  Part Number: TPS549A20 Hello E2E, Can we share the raw data of load regulation in pulse skip mode? Granted, this only impacts low currents, but is it something we characterize? If not, what is the typical vout delta when in light load? Can we share the…

  • 5 months ago
  • Power management
  • Power management forum

• WEBENCH® Tools/TPS549A20: TPS549A20 Output oscillations

  

  Dimitri Weigel21

  Part Number: TPS549A20 Tool/software: WEBENCH® Design Tools Hello, how I can prevent this huge oscillations on output at small loads? webench.ti.com/.../SDP.cgi Thanks

  • 10 months ago
  • Simulation, hardware & system design tools
  • Simulation, hardware & system design tools forum
Answered

• TPS549A20: Disable Soft Start

  

  Russell Wetherley1

  Resolved

  Part Number: TPS549A20 Other Parts Discussed in Thread: TPS549B22 , TPS54672 Hello E2E, Is it possible to disable the soft start on the TPS549A20? What's the fastest way we can boot up to regulator? My customer is looking for something that can rise…

  • Resolved

  • 6 months ago
  • Power management
  • Power management forum

• TPS549A20: I/O pins information

  

  Art Mecina

  TI Thinks Resolved

  Part Number: TPS549A20 Hello Guys, Our customer needed additional information on the I/O pins of TPS549A20. Do they need pull-up resistors to 3.3V on I2C SDA, and SCL ? Thanks in advance! Art

  • 8 months ago
  • Power management
  • Power management forum
Answered

• TPS549A20: TPS549A20 Documentation, EN pin behavior

  

  Serge Sudja

  Resolved

  Part Number: TPS549A20 Is the pin EN=GND switching off both FETs: low side & high side? Data sheet says: The enable pin turns on the DC-DC switching converter, without any definitions of "turns on" and/or "turns off" state. Thank…

  • Resolved

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

• TPS549A20: TPS549A20 WRITE_PROTECT Register has value 0x00

  

  Maximilain Werner

  Resolved

  Part Number: TPS549A20 Other Parts Discussed in Thread: TPS544B20 Hi all, I have some trouble with the WRITE_PROTECT register. I want to lock the PMIC so the WRITE_PROTECT [10h] register should has the value 0x40. If i write this to the register and read…

  • Resolved

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

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