TIDUFF9 September   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1 System Description
  8. 2 Power Design Parameters
  9. 3 Sequencing
    1. 3.1 Start-Up
    2. 3.2 Shutdown
  10. 4 Schematics
  11. 5 Front-End Protection
  12. 6 Multiple Peripheral Rail Buck Converter PMICs
  13. 7 Low-Voltage, High-Current, Core Rail Buck Converter
  14. 8 Voltage Supervisor
  15. 9 Summary
  16. 10Documentation Support
  17.   Trademarks

6 Multiple Peripheral Rail Buck Converter PMICs

The TPS6594-Q1 is a power management IC (PMIC) that has four flexible multiphase configurable buck regulators with an additional buck regulator and four LDOs. The TPS6594-Q1 device includes protection and diagnostic mechanisms such as voltage monitoring on the input supply, input overvoltage protection, voltage monitoring on all buck and LDO regulator outputs, register and interface CRC, current-limit, short-circuit protection, thermal pre-warning, and overtemperature shutdown.

The LP8764-Q1 is a power management IC (PMIC) which has four step-down DC/DC converter cores, that are configurable for five different phase configurations from one 4-phase output to four 1-phase outputs.

Both PMICs utilize a non-volatile memory (NVM) to control the default power sequences and default configurations, such as output voltage and GPIO configurations. The NVM is pre-programmed to allow start-up without external programming. Most static configurations, stored in the register map of the device, can be changed through SPI or I2C interfaces to configure the device to meet many different system needs. The NVM contains a bit-integrity-error detection feature (CRC) to stop the power-up sequence if an error is detected, preventing the system from starting in an unknown state.