SLVUCI5A April   2023  – June 2025 AM6526 , AM6528 , AM6548 , TPS6594-Q1

 

  1.   1
  2.   PDN-0C User's Guide for Powering AM65x with the TPS6594-Q1 PMIC
  3.   Trademarks
  4. 1Introduction
  5. 2Device Versions
  6. 3Processor Connections
    1. 3.1 Power Mapping
    2. 3.2 Control Mapping
  7. 4Supporting Functional Safety Systems
  8. 5Static NVM Settings
    1. 5.1  Application-Based Configuration Settings
    2. 5.2  Device Identification Settings
    3. 5.3  BUCK Settings
    4. 5.4  LDO Settings
    5. 5.5  VCCA Settings
    6. 5.6  GPIO Settings
    7. 5.7  Finite State Machine (FSM) Settings
    8. 5.8  Interrupt Settings
    9. 5.9  POWERGOOD Settings
    10. 5.10 Miscellaneous Settings
    11. 5.11 Interface Settings
    12. 5.12 Watchdog Settings
  9. 6Pre-Configurable Finite State Machine (PFSM) Settings
    1. 6.1 Configured States
    2. 6.2 PFSM Triggers
    3. 6.3 Power Sequences
      1. 6.3.1 TO_SAFE_SEVERE and TO_SAFE
      2. 6.3.2 TO_SAFE_ORDERLY and TO_STANDBY
      3. 6.3.3 ACTIVE_TO_WARM
      4. 6.3.4 ESM_SOC_ERROR
      5. 6.3.5 PWR_SOC_ERROR
      6. 6.3.6 MCU_TO_WARM
      7. 6.3.7 TO_MCU
      8. 6.3.8 TO_ACTIVE
      9. 6.3.9 TO_RETENTION
  10. 7Application Examples
    1. 7.1 Moving Between States; ACTIVE, MCU ONLY, and RETENTION
      1. 7.1.1 ACTIVE
      2. 7.1.2 MCU ONLY
      3. 7.1.3 RETENTION
    2. 7.2 Entering and Exiting Standby
    3. 7.3 Entering and Existing LP_STANDBY
    4. 7.4 Runtime Customization
  11. 8References
  12. 9Revision History

5.1 Application-Based Configuration Settings

In the TPS6594-Q1 data sheet, there are seven application-based configurations for each BUCK to operate within. The following list includes the different configurations available:

  • 2.2MHz Single Phase for DDR Termination
  • 4.4MHz VOUT Less than 1.9V, Multiphase or High COUT Single Phase
  • 4.4MHz VOUT Less than 1.9V, Low COUT, Single Phase Only
  • 4.4MHz VOUT Greater than 1.7V, Single Phase Only
  • 2.2MHz VOUT Less than 1.9V Multiphase or Single Phase
  • 2.2MHz Full VOUT Range and VIN Greater than 4.5V, Single Phase Only
  • 2.2MHz Full VOUT and Full VIN Range, Single Phase Only

The seven configurations also have optimal output inductance values that optimize the performance of each buck under these various conditions. Table 5-1 shows the default configurations for the BUCKs. These settings cannot be changed after device startup.

Table 5-1 Application Use Case Settings
Device BUCK Rail Default Application Use Case Recommended Inductor Value
TPS65941319-Q1 BUCK1 2.2MHz VOUT Less than 1.9V Multiphase or Single Phase 470nH
BUCK2 2.2MHz VOUT Less than 1.9V Multiphase or Single Phase 470nH
BUCK3 4.4MHz VOUT Less than 1.9V, Multiphase or High COUT Single Phase 220nH
BUCK4 4.4MHz VOUT Less than 1.9V, Multiphase or High COUT Single Phase 220nH
BUCK5 4.4MHz VOUT Less than 1.9V, Multiphase or High COUT Single Phase 220nH