ZHCSJI6 March   2019 TPS65653-Q1

PRODUCT PREVIEW Information. Product in design phase of development. Subject to change or discontinuance without notice.  

  1. 1 特性
    1.     简化原理图
  2. 2 应用
  3. 3 说明
    1.     直流/直流效率与输出电流
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 I2C Serial Bus Timing Parameters
    7. 6.7 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 DC/DC Converters
        1. 7.3.1.1 Overview
        2. 7.3.1.2 Transition Between PWM and PFM Modes
        3. 7.3.1.3 Buck Converter Load Current Measurement
        4. 7.3.1.4 Spread-Spectrum Mode
      2. 7.3.2 Sync Clock Functionality
      3. 7.3.3 Power-Up
      4. 7.3.4 Regulator Control
        1. 7.3.4.1 Enabling and Disabling Regulators
        2. 7.3.4.2 Changing Output Voltage
      5. 7.3.5 Enable and Disable Sequences
      6. 7.3.6 Device Reset Scenarios
      7. 7.3.7 Diagnosis and Protection Features
        1. 7.3.7.1 Power-Good Information (PGOOD pin)
          1. 7.3.7.1.1 PGOOD Pin Gated mode
          2. 7.3.7.1.2 PGOOD Pin Continuous Mode
        2. 7.3.7.2 Warnings for Diagnosis (Interrupt)
          1. 7.3.7.2.1 Output Power Limit
          2. 7.3.7.2.2 Thermal Warning
        3. 7.3.7.3 Protection (Regulator Disable)
          1. 7.3.7.3.1 Short-Circuit and Overload Protection
          2. 7.3.7.3.2 Overvoltage Protection
          3. 7.3.7.3.3 Thermal Shutdown
        4. 7.3.7.4 Fault (Power Down)
          1. 7.3.7.4.1 Undervoltage Lockout
      8. 7.3.8 Operation of the GPO Signals
      9. 7.3.9 Digital Signal Filtering
    4. 7.4 Device Functional Modes
      1. 7.4.1 Modes of Operation
    5. 7.5 Programming
      1. 7.5.1 I2C-Compatible Interface
        1. 7.5.1.1 Data Validity
        2. 7.5.1.2 Start and Stop Conditions
        3. 7.5.1.3 Transferring Data
        4. 7.5.1.4 I2C-Compatible Chip Address
        5. 7.5.1.5 Auto-Increment Feature
    6. 7.6 Register Maps
      1. 7.6.1 Register Descriptions
        1. 7.6.1.1  DEV_REV
        2. 7.6.1.2  OTP_REV
        3. 7.6.1.3  BUCK0_CTRL_1
        4. 7.6.1.4  BUCK0_CTRL_2
        5. 7.6.1.5  BUCK1_CTRL_1
        6. 7.6.1.6  BUCK1_CTRL_2
        7. 7.6.1.7  BUCK0_VOUT
        8. 7.6.1.8  BUCK1_VOUT
        9. 7.6.1.9  BUCK0_DELAY
        10. 7.6.1.10 BUCK1_DELAY
        11. 7.6.1.11 GPO_DELAY
        12. 7.6.1.12 GPO2_DELAY
        13. 7.6.1.13 GPO_CTRL
        14. 7.6.1.14 CONFIG
        15. 7.6.1.15 PLL_CTRL
        16. 7.6.1.16 PGOOD_CTRL_1
        17. 7.6.1.17 PGOOD_CTRL_2
        18. 7.6.1.18 PG_FAULT
        19. 7.6.1.19 RESET
        20. 7.6.1.20 INT_TOP_1
        21. 7.6.1.21 INT_TOP_2
        22. 7.6.1.22 INT_BUCK
        23. 7.6.1.23 TOP_STAT
        24. 7.6.1.24 BUCK_STAT
        25. 7.6.1.25 TOP_MASK_1
        26. 7.6.1.26 TOP_MASK_2
        27. 7.6.1.27 BUCK_MASK
        28. 7.6.1.28 SEL_I_LOAD
        29. 7.6.1.29 I_LOAD_2
        30. 7.6.1.30 I_LOAD_1
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
        1. 8.2.1.1 Inductor Selection
        2. 8.2.1.2 Buck Input Capacitor Selection
        3. 8.2.1.3 Buck Output Capacitor Selection
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 器件支持
      1. 11.1.1 第三方产品免责声明
    2. 11.2 接收文档更新通知
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 术语表

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

8.2.1.1 Inductor Selection

The inductors L0 and L1 are shown in the Typical Application. The inductance and DCR of the inductor affects the control loop of the buck regulator. TI recommends using inductors similar to those listed in Table 8. Pay attention to the saturation current and temperature rise current of the inductor. Check that the saturation current is higher than the peak current limit and the temperature rise current is higher than the maximum expected rms output current. For the minimum effective inductance to ensure good performance at maximum peak output current over the operating temperature range refer to Electrical Characteristics. DC resistance of the inductor must be less than 0.05 Ω for good efficiency at high-current condition. The inductor AC loss also affects conversion efficiency. Higher Q factor at switching frequency usually gives better efficiency at light load to middle load. Shielded inductors are preferred as they radiate less noise.

Table 8. Recommended Inductors

MANUFACTURER PART NUMBER VALUE DIMENSIONS L × W × H (mm) RATED DC CURRENT
ISAT maximum (typical) /
ITEMP maximum (typical) (A)		 DCR
typical / maximum (mΩ)
Murata DFE252012PD-R47M 0.47 µH (20%) 2.5 × 2 × 1.2 5.2 (–) / 4 (–)(1) — / 27
Tayo Yuden MDMK2020TR47MMV 0.47 µH (20%) 2 × 2 ×1.2 4.2 (4.8) / 2.3 (2.45) 40 / 46
(1) Operating temperature range is up to 125°C including self temperature rise.