ZHCSR76 November   2022 TPSM82901

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and 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 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 Mode Selection and Device Configuration (MODE/S-CONF)
      2. 7.3.2 Adjustable VO Operation (External Voltage Divider)
      3. 7.3.3 Setable VO Operation (VSET and Internal Voltage Divider)
      4. 7.3.4 Soft Start/Tracking (SS/TR)
      5. 7.3.5 Smart Enable with Precise Threshold
      6. 7.3.6 Power Good (PG)
      7. 7.3.7 Undervoltage Lockout (UVLO)
      8. 7.3.8 Current Limit And Short Circuit Protection
      9. 7.3.9 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Pulse Width Modulation (PWM) Operation
      2. 7.4.2 AEE (Automatic Efficiency Enhancement)
      3. 7.4.3 Power Save Mode Operation (Auto PFM/PWM)
      4. 7.4.4 100% Duty-Cycle Operation
      5. 7.4.5 Output Discharge Function
      6. 7.4.6 Starting into a Pre-Biased Load
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application with Adjustable Output Voltage
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Programming the Output Voltage
        3. 8.2.2.3 Capacitor Selection
          1. 8.2.2.3.1 Output Capacitor
          2. 8.2.2.3.2 Input Capacitor
          3. 8.2.2.3.3 Soft-Start Capacitor
        4. 8.2.2.4 Tracking Function
      3. 8.2.3 Application Curves
    3. 8.3 Typical Application with Setable VO Using VSET
      1. 8.3.1 Design Requirements
      2. 8.3.2 Detailed Design Procedure
      3. 8.3.3 Application Curves
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
        1. 8.5.2.1 Thermal Considerations
  9. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 第三方米6体育平台手机版_好二三四免责声明
      2. 9.1.2 Development Support
        1. 9.1.2.1 Custom Design With WEBENCH® Tools
    2. 9.2 接收文档更新通知
    3. 9.3 支持资源
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 术语表
  10. 10Mechanical, Packaging, and Orderable Information

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

8.2.3 Application Curves



Auto PFM/PWM Fsw = 1 MHz
Figure 8-5 Efficiency vs Output Current
VOUT = 1.2 V


FPWM Fsw = 1 MHz
Figure 8-7 Efficiency vs Output Current
VOUT = 1.2 V


Auto PFM/PWM Fsw = 2.5 MHz
Figure 8-9 Efficiency vs Output Current
VOUT = 1.8 V


Auto PFM/PWM Fsw = 2.5 MHz
Figure 8-11 Efficiency vs Output Current
VOUT = 3.3 V


Auto PFM/PWM Fsw = 2.5 MHz
Figure 8-13 Efficiency vs Output Current
VOUT = 5.5 V


Auto PFM/PWM Fsw = 1 MHz
Figure 8-15 Switching Frequency vs Input Voltage
VOUT = 1.2 V


FPWM Fsw = 1 MHz
Figure 8-17 Switching Frequency vs Input Voltage
VOUT = 1.2 V


Auto PFM/PWM Fsw = 2.5 MHz
Figure 8-19 Switching Frequency vs Input Voltage
VOUT = 1.8 V


Auto PFM/PWM Fsw = 2.5 MHz
Figure 8-21 Switching Frequency vs Input Voltage
VOUT = 3.3 V


Auto PFM/PWM Fsw = 2.5 MHz
Figure 8-23 Switching Frequency vs Input Voltage
VOUT = 5.5 V


FPWM Fsw = 1 MHz
Figure 8-25 Output Voltage vs Output Current
VOUT = 1.8 V


VIN = 12 V 1-MHz Auto PFM/PWM IO = 1 A
VOUT = 1.8 V TA = 25°C
Figure 8-27 Start-Up Timing


VIN = 12 V 2.5-MHz PFM/PWM IO = 1 A
VOUT = 5 V TA = 25°C
Figure 8-29 Start-Up Timing


VIN = 12 V 1-MHz Auto PFM/PWM IO = 0.1 A
VOUT = 1.2 V TA = 25°C
Figure 8-31 Output Voltage Ripple


VIN = 12 V 2.5-MHz Auto PFM/PWM IO = 0.1 A
VOUT = 1.2 V TA = 25°C
Figure 8-33 Output Voltage Ripple


VIN = 12 V 2.5-MHz FPWM IO = 0.1 A
VOUT = 3.3 V TA = 25°C
Figure 8-35 Output Voltage Ripple


VIN = 12 V 2.5-MHz Auto PFM/PWM
VOUT = 5.0 V IO = 1 A TA = 25°C
Figure 8-37 Output Voltage Ripple


VIN = 12 V 1-MHz Auto PFM/PWM IO = 5 mA to 1 A to 5 mA
VOUT = 1.2 V TA = 25°C
Figure 8-39 Load Transient Response


VIN = 12 V 1-MHz Auto PFM/PWM IO = 1 A to 5 mA
VOUT = 1.2 V TA = 25°C
Figure 8-41 Load Transient Response – Falling Edge


VIN = 12 V 2.5-MHz FPWM IO = 5 mA to 1 A to 5 mA
VOUT = 3.3 V TA = 25°C
Figure 8-43 Load Transient Response


Auto PFM/PWM Fsw = 2.5 MHz
Figure 8-45 Thermal Derating VOUT = 1.2 V


Auto PFM/PWM Fsw = 2.5 MHz
Figure 8-6 Efficiency vs Output Current
VOUT = 1.2 V


Auto PFM/PWM Fsw = 1 MHz
Figure 8-8 Efficiency vs Output Current
VOUT = 1.8 V


FPWM Fsw = 1 MHz
Figure 8-10 Efficiency vs Output Current
VOUT = 1.8 V


FPWM Fsw = 2.5 MHz
Figure 8-12 Efficiency vs Output Current
VOUT = 3.3 V


FPWM Fsw = 2.5 MHz
Figure 8-14 Efficiency vs Output Current
VOUT = 5.5 V


Auto PFM/PWM Fsw = 2.5 MHz
Figure 8-16 Switching Frequency vs Input Voltage
VOUT = 1.2 V


Auto PFM/PWM Fsw = 1 MHz
Figure 8-18 Switching Frequency vs Input Voltage
VOUT = 1.8 V


FPWM Fsw = 1 MHz
Figure 8-20 Switching Frequency vs Input Voltage
VOUT = 1.8 V


FPWM Fsw = 2.5 MHz
Figure 8-22 Switching Frequency vs Input Voltage
VOUT = 3.3 V


FPWM Fsw = 2.5 MHz
Figure 8-24 Switching Frequency vs Input Voltage
VOUT = 5.5 V


VIN = 12 V 1-MHz FPWM IO = 0 mA
VOUT = 1.2 V TA = 25°C
Figure 8-26 Start-Up Timing


VIN = 12 V 2.5-MHz FPWM IO = 1 A
VOUT = 5 V TA = 25°C
Figure 8-28 Start-Up Timing


VIN = 12 V 1-MHz Auto PFM/PWM IO = 1 A
VOUT = 1.2 V TA = 25°C
Figure 8-30 Output Voltage Ripple


VIN = 12 V 2.5-MHz Auto PFM/PWM IO = 1 A
VOUT = 1.2 V TA = 25°C
Figure 8-32 Output Voltage Ripple


VIN = 12 V 2.5-MHz Auto PFM/PWM IO = 1 A
VOUT = 3.3 V TA = 25°C
Figure 8-34 Output Voltage Ripple


VIN = 12 V 2.5-MHz FPWM IO = 1 A
VOUT = 5.0 V TA = 25°C
Figure 8-36 Output Voltage Ripple


VIN = 12 V 1-MHz Auto PFM/PWM IO = 0.1 A to 1 A
VOUT = 1.2 V TA = 25°C
Figure 8-38 PSM-to-PWM Transition


VIN = 12 V 1-MHz Auto PFM/PWM IO = 5 mA to 1 A
VOUT = 1.2 V TA = 25°C
Figure 8-40 Load Transient Response – Rising Edge


VIN = 12 V IO = 5 mA to 1 A to 5 mA
VOUT = 3.3 V 2.5-MHz Auto PFM/PWM TA = 25°C
Figure 8-42 Load Transient Response


VIN = 12 V Output Discharge = Yes
VOUT = 1.2 V TA = 25°C
Figure 8-44 Output Discharge Function – Enabled


Auto PFM/PWM Fsw = 2.5 MHz
Figure 8-46 Thermal Derating VOUT = 3.3 V
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