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  • TPS6521907 Technical Reference Manual

    • SLVUCL9A June   2023  – February 2025 TPS65219

       

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  • TPS6521907 Technical Reference Manual
  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2EEPROM Device Settings
    1. 2.1  Device ID
    2. 2.2  TPS6521907 Sequence and Power Block Diagram
    3. 2.3  Enable Settings
    4. 2.4  Regulator Voltage Settings
    5. 2.5  Sequence Settings
      1. 2.5.1 Power-Up Sequence
      2. 2.5.2 Power-Down Sequence
    6. 2.6  EN / PB / VSENSE Settings
    7. 2.7  Multi-Function Pin Settings
    8. 2.8  Over-Current Deglitch
    9. 2.9  Mask Settings
    10. 2.10 Discharge Check
    11. 2.11 Multi PMIC Config
  6. 3Revision History
  7. IMPORTANT NOTICE
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Technical Reference Manual

TPS6521907 Technical Reference Manual

Abstract

This Technical Reference Manual (TRM) can be used as a reference for the default register bits after the NVM download. The end user is responsible for validating the NVM settings for proper system use including any safety impact. This TRM does not provide information about the electrical characteristics, external components, package, or the functionality of the device. For this information and the full register map, refer to the device data sheet available on the at ti.com.

Trademarks

All trademarks are the property of their respective owners.

1 Introduction

The TPS65219/TPS65220 PMIC is a cost and space optimized solution that has flexible mapping to support the power requirements from different processors and SoCs. This PMIC contains seven regulators; 3 Buck regulators and 4 Low Drop-out Regulators (LDOs). Additionally, it has I2C, GPIOs and configurable multi-function pins. TPS65219 is characterized for -40°C to +105°C ambient temperature and TPS65220 is characterized for -40°C to +125°C ambient temperature. For safety sensitive applications, TPS65220 is functional safety capable. Therefore the TPS65220 development process is a TI-quality managed process, also functional safety FIT rate calculation and Failure mode distribution (FMD) is available for TPS65220. Whenever entering the INITIALIZE state, the PMIC reads its memory and loads the registers with the content from the EEPROM. The EEPROM loading takes approximately 2.3ms. The power-up sequence can only be executed after the EEPROM-load and all rails are discharged below the SCG threshold. This document describes the default configuration programmed on TPS6521907.

Note: The NVM configuration described in this document is ideal for the application described below but can also be used to power other processors or SoCs with equivalent power requirements.

  • Processor: AM62, AM64, AM243
  • CORE voltage: 0.85V
  • Memory: DDR4
  • Input Supply (VSYS, PVIN_Bx): 5V

2 EEPROM Device Settings

The following sections describe the default configuration on the EEPROM-backed registers. During the power-down-sequence, non-EEPROM-backed bits are reset, with the exception of unmasked interrupt bits and DISCHARGE_EN bits.

2.1 Device ID

This section lists all the register settings that identify the supported temperature and the NVM ID with the corresponding revision that represents a list of default register settings.

Table 2-1 Device ID
Register Address Field Name Value Description
0x00 TI_DEVICE_ID

(Bits: 7-5)

0x00 Device specific ID code to identify supported ambient and junction temperature.
0x01 TI_NVM_ID

(Bits: 7-0)

0x07 Identification code for the NVM ID
0x41 NVM_REVISION

(Bits: 7-5)

0x2 Identification code for the NVM revision
0x26 I2C_ADDRESS

(Bits: 6-0)

0x30 I2C address

2.2 TPS6521907 Sequence and Power Block Diagram

TPS65219 TPS6521907 Example Power Block
                    Diagram Figure 2-1 TPS6521907 Example Power Block Diagram
TPS65219 TPS6521907 Power-Up
                    Sequence Figure 2-2 TPS6521907 Power-Up Sequence
TPS65219 TPS6521907 Power-Down
                    Sequence Figure 2-3 TPS6521907 Power-Down Sequence

2.3 Enable Settings

This section describes the PMIC rails that are enabled in Active and Standby state. Any rail that is disabled by default has the option to be enabled through I2C once the device is in Active state and I2C communication is available. The transition between Active and Standby state can be triggered by hardware (when MODE/STBY pin is configured as STBY) or by software (register field: STBY_I2C_CTRL).

Table 2-2 ACTIVE state
PMIC Rail Register Address Field Name Value Description
BUCK1 0x02 BUCK1_EN 0x1 Enabled
BUCK2 0x02 BUCK2_EN 0x1 Enabled
BUCK3 0x02 BUCK3_EN 0x1 Enabled
LDO1 0x02 LDO1_EN 0x1 Enabled
LDO2 0x02 LDO2_EN 0x1 Enabled
LDO3 0x02 LDO3_EN 0x1 Enabled
LDO4 0x02 LDO4_EN 0x1 Enabled
GPO1 0x1E GPO1_EN 0x1 GPO1 enabled. The output state is Hi-Z.
GPO2 0x1E GPO2_EN 0x0 GPO2 disabled. The output state is low.
GPIO 0x1E GPIO_EN 0x0 GPIO disabled. The output state is low.
Table 2-3 STANBY (STBY) state
PMIC Rail Register Address Field Name Value Description
BUCK1 0x21 BUCK1_STBY_EN 0x1 Enabled in STBY Mode
BUCK2 0x21 BUCK2_STBY_EN 0x1 Enabled in STBY Mode
BUCK3 0x21 BUCK3_STBY_EN 0x1 Enabled in STBY Mode
LDO1 0x21 LDO1_STBY_EN 0x1 Enabled in STBY Mode
LDO2 0x21 LDO2_STBY_EN 0x1 Enabled in STBY Mode
LDO3 0x21 LDO3_STBY_EN 0x1 Enabled in STBY Mode
LDO4 0x21 LDO4_STBY_EN 0x1 Enabled in STBY Mode
GPO1 0x22 GPO1_STBY_EN 0x1 Enabled in STBY Mode
GPO2 0x22 GPO2_STBY_EN 0x0 Disabled in STBY Mode
GPIO 0x22 GPIO_STBY_EN 0x0 Disabled in STBY Mode

2.4 Regulator Voltage Settings

This section describes how each of the PMIC power resources are configured.

Table 2-4 Buck Regulator Settings
PMIC Rail Register Address Field Name Value Description
Bucks Switching Mode

(Global for all buck regulators)

0x03 BUCK_FF_ENABLE

(Switching Mode)

0x0 Quasi-fixed frequency mode
0x03 BUCK_SS_ENABLE

(Spread-Spectrum)

0x0 Spread spectrum disabled

(only applicable if BUCK_FF_ENABLE=0x1)

BUCK1 0x0A BUCK1_VSET

(Output Voltage)

0xA 0.850V
0x0A BUCK1_UV_THR_SEL

(UV threshold)

0x0 -5% UV detection
0x0A BUCK1_BW_SEL

(Bandwidth)

0x1 high bandwidth
BUCK2 0x09 BUCK2_VSET

(Output Voltage)

0x33 3.300V
0x09 BUCK2_UV_THR_SEL

(UV threshold)

0x0 -5% UV detection
0x09 BUCK2_BW_SEL

(Bandwidth)

0x1 high bandwidth
0x03 BUCK2_PHASE_CONFIG 0x3 270 degrees

(only applicable if BUCK_FF_ENABLE=0x1)

BUCK3 0x08 BUCK3_VSET

(Output Voltage)

0x18 1.200V
0x08 BUCK3_UV_THR_SEL

(UV threshold)

0x0 -5% UV detection
0x08 BUCK3_BW_SEL

(Bandwidth)

0x1 high bandwidth
0x03 BUCK3_PHASE_CONFIG 0x2 180 degrees

(only applicable if BUCK_FF_ENABLE=0x1)

Note:
  • When bucks are configured for quasi-fixed frequency (BUCK_FF_ENABLE=0x0), changing the switching mode between auto-PFM and forced-PWM can be triggered by I2C (MODE_I2C_CTRL) or with one of the multi-function pins (MODE/RESET or MODE/STBY) if one of them is configured as MODE. Forced-PWM has priority over Auto-PFM.
  • BUCK2_PHASE_CONFIG, BUCK3_PHASE_CONFIG and BUCK_SS_ENABLE are only applicable when the buck regulators are configured for fixed frequency (BUCK_FF_ENABLE=0x1).
Table 2-5 LDO Regulator Settings
PMIC Rail Setting Register Address Field Name Value Description
LDO1 output voltage 0x07 LDO1_VSET 0x36 3.300V
Rail configuration 0x07 LDO1_LSW_CONFIG 0x0 Not Applicable (LDO1 not configured as load-switch)
0x07 LDO1_BYP_CONFIG 0x1 LDO1 configured as Bypass

(only applicable if LDO1_LSW_CONFIG=0x0)

UV threshold 0x1E LDO1_UV_THR 0x0 -5% UV detection
LDO2 output voltage 0x06 LDO2_VSET 0x18 1.800V
Rail configuration 0x06 LDO2_LSW_CONFIG 0x0 Not Applicable (LDO2 not configured as load-switch)
0x06 LDO2_BYP_CONFIG 0x0 LDO2 configured as LDO

(only applicable if LDO2_LSW_CONFIG=0x0)

UV threshold 0x1E LDO2_UV_THR 0x0 -5% UV detection
LDO3 output voltage 0x05 LDO3_VSET 0x18 1.800V
Rail configuration 0x05 LDO3_LSW_CONFIG 0x0 LDO Mode
ramp configuration 0x05 LDO3_SLOW_PU_RAMP 0x1 Slow ramp for power-up (~3ms)
UV threshold 0x1E LDO3_UV_THR 0x0 -5% UV detection
LDO4 output voltage 0x04 LDO4_VSET 0x26 2.500V
Rail configuration 0x04 LDO4_LSW_CONFIG 0x0 LDO Mode
ramp configuration 0x04 LDO4_SLOW_PU_RAMP 0x1 Slow ramp for power-up (~3ms)
UV threshold 0x1E LDO4_UV_THR 0x0 -5% UV detection
Note:
  • If a LDO is configured in bypass-mode or LSW-mode, UV-detection is not supported.
  • If an LDO is configured in bypass-mode, the corresponding PVIN_LDOx supply must match the configured output voltage in the LDOx_VOUT register.
  • If LDO is configured as load-switch (LSW_mode), the desired voltage does not need to be configured in the LDOx_VOUT register.
  • In bypass- or LSW-mode, the LDO acts as a switch, where VOUT is VIN minus the drop over the FET-resistance.
  • If LDO1 or LDO2 is configured as bypass, it allows voltage and function changes between LDO (VOUT=1.8V) and VOUT=VSET register setting. This voltage/function change can be triggered by hardware (using the VSEL_SD pin when configured as SD) or by software (VSEL_SD_I2C_CTRL).

2.5 Sequence Settings

This section breaks down the power sequence settings for the device including the power-up/power-down slot assignment and duration. There may be slots in which no rail or GPIO is assigned to ramp. These "empty" slots can be used to add additional time and increase a slot duration.

 

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