ZHCSCO3A May   2014  – JULY 2014 TPS40428

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Handling Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Asynchronous Pulse Injection (API)
      2. 7.3.2  Adaptive Voltage Scaling (AVS)
      3. 7.3.3  Switching Frequency and Synchronization
      4. 7.3.4  Voltage Reference
      5. 7.3.5  Output Voltage and Remote Sensing Amplifier
      6. 7.3.6  Current Sensing and Temperature Sensing Modes
        1. 7.3.6.1 Non Smart-Power Operation
        2. 7.3.6.2 Smart-Power Operation.
      7. 7.3.7  Current Sensing
      8. 7.3.8  Temperature Sensing
      9. 7.3.9  Current Sharing
      10. 7.3.10 Linear Regulators
      11. 7.3.11 Power Sequence Between TPS40428 Device and Power Stage
      12. 7.3.12 PWM Signal
      13. 7.3.13 Startup and Shutdown
      14. 7.3.14 Pre-Biased Output Start-up
      15. 7.3.15 PGOOD Indication
      16. 7.3.16 Overcurrent Protection
      17. 7.3.17 Output Overvoltage/Undervoltage Protection
      18. 7.3.18 Overtemperature Fault Protection
      19. 7.3.19 Input Undervoltage Lockout (UVLO)
      20. 7.3.20 Fault Communication
      21. 7.3.21 Fault Protection Summary
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 Multi-Phase Applications
    6. 7.6 Register Maps
      1. 7.6.1 PMBus General Description
      2. 7.6.2 PMBus Functionality
        1. 7.6.2.1 PMBus Address
        2. 7.6.2.2 PMBus Connections
        3. 7.6.2.3 PMBus Data Format
        4. 7.6.2.4 PMBus Output Voltage Adjustment
          1. 7.6.2.4.1 No Margin Voltage
          2. 7.6.2.4.2 Margin High Voltage State
          3. 7.6.2.4.3 Margin Low State
        5. 7.6.2.5 Reading the Output Current
        6. 7.6.2.6 Soft-Start Time
        7. 7.6.2.7 Turn-On/Turn-Off Delay and Sequencing
        8. 7.6.2.8 Supported PMBus Commands
          1. 7.6.2.8.1  PAGE (00h)
          2. 7.6.2.8.2  OPERATION (01h)
          3. 7.6.2.8.3  ON_OFF_CONFIG (02h)
          4. 7.6.2.8.4  CLEAR_FAULTS (03h)
          5. 7.6.2.8.5  WRITE_PROTECT (10h)
          6. 7.6.2.8.6  STORE_USER_ALL (15h)
          7. 7.6.2.8.7  RESTORE_USER_ALL (16h)
          8. 7.6.2.8.8  CAPABILITY (19h)
          9. 7.6.2.8.9  VOUT_MODE (20h)
          10. 7.6.2.8.10 VIN_ON (35h)
          11. 7.6.2.8.11 VIN_OFF (36h)
          12. 7.6.2.8.12 IOUT_CAL_GAIN (38h)
          13. 7.6.2.8.13 IOUT_CAL_OFFSET (39h)
          14. 7.6.2.8.14 IOUT_OC_FAULT_LIMIT (46h)
          15. 7.6.2.8.15 IOUT_OC_FAULT_RESPONSE (47h)
          16. 7.6.2.8.16 IOUT_OC_WARN_LIMIT (4Ah)
          17. 7.6.2.8.17 OT_FAULT_LIMIT (4Fh)
          18. 7.6.2.8.18 OT_WARN_LIMIT (51h)
          19. 7.6.2.8.19 TON_RISE (61h)
          20. 7.6.2.8.20 STATUS_BYTE (78h)
          21. 7.6.2.8.21 STATUS_WORD (79h)
          22. 7.6.2.8.22 STATUS_VOUT (7Ah)
          23. 7.6.2.8.23 STATUS_IOUT (7Bh)
          24. 7.6.2.8.24 STATUS_TEMPERATURE (7Dh)
          25. 7.6.2.8.25 STATUS_CML (7Eh)
          26. 7.6.2.8.26 STATUS_MFR_SPECIFIC (80h)
          27. 7.6.2.8.27 READ_VOUT (8Bh)
          28. 7.6.2.8.28 READ_IOUT (8Ch)
          29. 7.6.2.8.29 READ_TEMPERATURE_2 (8Eh)
          30. 7.6.2.8.30 PMBus_REVISION (98h)
          31. 7.6.2.8.31 MFR_SPECIFIC_00 (D0h)
          32. 7.6.2.8.32 MFR_SPECIFIC_04 (VREF_TRIM) (D4h)
          33. 7.6.2.8.33 MFR_SPECIFIC_05 (STEP_VREF_MARGIN_HIGH) (D5h)
          34. 7.6.2.8.34 MFR_SPECIFIC_06 (STEP_VREF_MARGIN_LOW) (D6h)
          35. 7.6.2.8.35 MFR_SPECIFIC_07 (PCT_VOUT_FAULT_PG_LIMIT) (D7h)
          36. 7.6.2.8.36 MFR_SPECIFIC_08 (SEQUENCE_TON_TOFF_DELAY) (D8h)
          37. 7.6.2.8.37 (E0h) MFR_SPECIFIC_16 (COMM_EEPROM_SPARE)
          38. 7.6.2.8.38 MFR_SPECIFIC_21 (OPTIONS) (E5h)
          39. 7.6.2.8.39 MFR_SPECIFIC_22 (PWM_OSC_SELECT) (E6h)
          40. 7.6.2.8.40 MFR_SPECIFIC_23 (MASK SMBALERT) (E7h)
          41. 7.6.2.8.41 MFR_SPECIFIC_25 (AVS_CONFIG) (E9h)
          42. 7.6.2.8.42 MFR_SPECIFIC_26 (AVS_ADDRESS) (EAh)
          43. 7.6.2.8.43 MFR_SPECIFIC_27 (AVS_DAC_DEFAULT) (EBh)
          44. 7.6.2.8.44 MFR_SPECIFIC_28 (AVS_CLAMP_HI) (ECh)
          45. 7.6.2.8.45 MFR_SPECIFIC_29 (AVS_CLAMP_LO) (EDh)
          46. 7.6.2.8.46 MFR_SPECIFIC_30 (TEMP_OFFSET) (EEh)
          47. 7.6.2.8.47 MFR_SPECIFIC_32 (API_OPTIONS) (F0h)
          48. 7.6.2.8.48 MFR_SPECIFIC_44 (DEVICE_CODE) (FCh)
  8. 8 Applications and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1  Switching Frequency Selection
        2. 8.2.2.2  Inductor Selection
        3. 8.2.2.3  Output Capacitor Selection
          1. 8.2.2.3.1 Output Voltage Deviation During Load Transient
          2. 8.2.2.3.2 Output Voltage Ripple
        4. 8.2.2.4  Input Capacitor Selection
        5. 8.2.2.5  VDD, BP5, BP3 Bypass Capacitor
        6. 8.2.2.6  R-C Snubber
        7. 8.2.2.7  Current and Temperature Sensor
        8. 8.2.2.8  Power Sequence Between the TPS40428 Device and Power Stage
        9. 8.2.2.9  Output Voltage Setting and Frequency Compensation Selection
        10. 8.2.2.10 Key PMBus Parameter Selection
          1. 8.2.2.10.1 MFR_SPECIFIC_21 (OPTIONS)
            1. 8.2.2.10.1.1 IOUT_CAL_GAIN
            2. 8.2.2.10.1.2 Enable and UVLO
            3. 8.2.2.10.1.3 Soft-Start Time
            4. 8.2.2.10.1.4 Overcurrent Threshold and Response
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Layout Guidelines for TPS40428 Device
      2. 10.1.2 Layout Guidelines for the Power Stage Device
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 开发支持
      1. 11.1.1 德州仪器 (TI) Fusion Digital Power Designer
      2. 11.1.2 TPS40k 环路补偿工具
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 术语表
  12. 12机械封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

11 器件和文档支持

11.1 开发支持

11.1.1 德州仪器 (TI) Fusion Digital Power Designer

德州仪器 (TI) Digital Power Designer 能够为 TPS40428 提供全面支持。 Fusion digital Power Designer 是一款图形用户界面 (GUI)，可使用德州仪器 (TI) USB-to-GPIO 适配器通过 PMBus 来配置和监视 TPS40428 器件。

单击此链接下载德州仪器 (TI) Fusion Digital Power Designer 软件包。

dpd_config_slusbv0_p.pngFigure 33. 使用 Fusion Digital Power Designer 进行器件配置
dpd_monitor_slusbv0_p.pngFigure 34. 使用 Fusion Digital Power Designer 进行器件监控

11.1.2 TPS40k 环路补偿工具

在双路输出应用中，TPS40428 器件是一款电压模式控制器；德州仪器 (TI) TPS40k 环路补偿工具可为其提供支持。 这款电子表格工具可用于计算频率补偿组件。

对于多相应用，将电流信息应用于控制环路可实现相位间的电流均流，TPS40428 器件此时不再是一个纯粹的电压模式控制器。 电子表格工具中计算得到的补偿组件值可用作起始点。

由于组件变化、PCB 寄生阻抗和布局影响，最好根据测量结果来优化补偿组件值。

11.2 Trademarks

All other trademarks are the property of their respective owners.

11.3 Electrostatic Discharge Caution

esds-image

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

11.4 术语表

SLYZ022 — TI 术语表。

这份术语表列出并解释术语、首字母缩略词和定义。