SLVUCF3 March   2022 DRA829V , LP8764-Q1 , TDA4VM , TPS6594-Q1

 

  1.   Trademarks
  2. 1Introduction
  3. 2Device Versions
  4. 3Processor Connections
    1. 3.1 Power Mapping
    2. 3.2 Control Mapping
  5. 4Supporting Functional Safety Systems
    1. 4.1 Achieving ASIL-B System Requirements
    2. 4.2 Achieving up to ASIL-D System Requirements
  6. 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 Multi-Device Settings
    13. 5.13 Watchdog Settings
  7. 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 TO_ACTIVE
      6. 6.3.6 TO_RETENTION
  8. 7Application Examples
    1. 7.1 Initialization
    2. 7.2 Moving Between States; ACTIVE and RETENTION
      1. 7.2.1 ACTIVE
      2. 7.2.2 RETENTION
    3. 7.3 Entering and Exiting Standby
    4. 7.4 Entering and Existing LP_STANDBY
    5. 7.5 Runtime Customization
  9. 8References

5.1 Application-Based Configuration Settings

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

  • 4.4 MHz VOUT Less than 1.9 V, Multiphase or High COUT Single Phase
  • 2.2 MHz Single Phase for DDR Termination
  • 4.4 MHz VOUT Less than 1.9 V, Low COUT, Single Phase Only
  • 4.4 MHz VOUT Greater than 1.7 V, Single Phase Only
  • 2.2 MHz Full VOUT Range and VIN Greater than 4.5 V, Single Phase Only
  • 2.2 MHz VOUT Less than 1.9 V Multiphase or Single Phase
  • 2.2 MHz Full VOUT and Full VIN Range, Single Phase Only
In the LP8764-Q1 datasheet, there are also seven application-based configurations:
  • 4.4MHz Single-Phase and Multi-Phase Configuration
  • 2.2MHz Single-Phase Configuration for DDR Termination
  • 4.4MHz Single-Phase Configuration Low Output Voltage
  • 4.4MHz Single-Phase Configuration High Output Voltage
  • 2.2MHz Single-Phase Configuration with 5.0V VIN
  • 2.2MHz Single-Phase and Multi-Phase Configuration
  • 2.2MHz Single-Phase Generic Configuration

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. The loop parameters associated with the use cases cannot be changed after device startup.

Table 5-1 Application Use Case Settings
DeviceBUCK RailDefault Application Use CaseRecommended Inductor Value
TPS65941213-Q1BUCK12.2 MHz VOUT Less than 1.9 V Multiphase or Single Phase470 nH
BUCK22.2 MHz VOUT Less than 1.9 V Multiphase or Single Phase470 nH
BUCK32.2 MHz VOUT Less than 1.9 V Multiphase or Single Phase470 nH
BUCK42.2 MHz VOUT Less than 1.9 V Multiphase or Single Phase470 nH
BUCK52.2 MHz VOUT Less than 1.9 V Multiphase or Single Phase470 nH
LP876411B4-Q1BUCK12.2MHz Single-Phase and Multi-Phase Configuration470 nH
BUCK22.2MHz Single-Phase and Multi-Phase Configuration470 nH
BUCK32.2MHz Single-Phase and Multi-Phase Configuration470 nH
BUCK42.2MHz Single-Phase and Multi-Phase Configuration470 nH