ZHCSQI1A November   2022  – November 2023 TPS92622-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Power Supply (SUPPLY)
        1. 6.3.1.1 Power-On Reset (POR)
        2. 6.3.1.2 Suppply Current in Fault Mode
      2. 6.3.2  Enable and Shutdow(EN)
      3. 6.3.3  Constant-Current Output and Setting (INx)
      4. 6.3.4  Thermal Sharing Resistor (OUTx and RESx)
      5. 6.3.5  PWM Control (PWMx)
      6. 6.3.6  Supply Control
      7. 6.3.7  Diagnostics
        1. 6.3.7.1 LED Short-to-GND Detection
        2. 6.3.7.2 LED Open-Circuit Detection
        3. 6.3.7.3 LED Open-Circuit Detection Enable (DIAGEN)
        4. 6.3.7.4 Overtemperature Protection
        5. 6.3.7.5 Low Dropout Operation
      8. 6.3.8  FAULT Bus Output With One-Fails-All-Fail
      9. 6.3.9  FAULT Table
      10. 6.3.10 LED Fault Summary
      11. 6.3.11 IO Pins Inner Connection
    4. 6.4 Device Functional Modes
      1. 6.4.1 Undervoltage Lockout, V(SUPPLY) < V(POR_rising)
      2. 6.4.2 Normal Operation V(SUPPLY) ≥ 4.5 V
      3. 6.4.3 Low-Voltage Dropout Operation
      4. 6.4.4 Fault Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 BCM Controlled Rear Lamp With One-Fails-All-Fail Setup
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
      2. 7.2.2 Independent PWM Controlled Rear Lamp By MCU
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 接收文档更新通知
    2. 8.2 支持资源
    3. 8.3 Trademarks
    4. 8.4 静电放电警告
    5. 8.5 术语表
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

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6.3.9 FAULT Table

Table 6-1 Fault Table With DIAGEN = HIGH (Full Function)
FAULT BUS STATUSFAULT TYPEDETECTION MECHANISMCONTROL INPUTDEGLITCH TIMEFAULT BUSFAULT HANDLING ROUTINEFAULT RECOVERY
FAULT = HOpen circuit or short-to-supplyV(IN) – V(OUT) < V(OPEN_th_rising) EN = H and PWMx = Ht(OPEN_deg)Constant-current pulldownDevice turns failed output off and retries with constant current I(retry), ignoring the PWM input.Auto recovery
Short-to-groundV(OUT) < V(SG_th_falling)
OR
V(RES) < V(SG_th_falling)		 EN = H and PWMx = Ht(SG_deg)Constant-current pulldownDevice turns failed output off and retries with constant current I(retry), ignoring the PWM input.Auto recovery
OvertemperatureTJ > T(TSD)EN = Ht(TSD_deg)Constant-current pulldownDevice turns all output channels off.Auto recovery
FAULT = LFault is detectedDevice turns all remained channels off and keeps retry on the failed channels. After the Fault pin is released, all channels are turned on after t(FAULT_recovery) time.
No fault is detectedDevice turns all output channels off.
Table 6-2 Fault Table With DIAGEN = LOW (Full Function)
FAULT BUS STATUSFAULT TYPEDETECTION MECHANISMCURRENT OUTPUTDEGLITCH TIMEFAULT BUSFAULT HANDLING ROUTINEFAULT RECOVERY
FAULT = HOpen circuit or short-to-supplyIgnored
Short-to-groundV(OUT) < V(SG_th_falling)
OR
V(OUT) < V(SG_th_falling)		EN = H and PWMx = Ht(SG_deg)Constant-current pulldownDevice turns output off and retries with constant current I(retry), ignoring the PWM input.Auto recovery
OvertemperatureTJ > T(TSD)EN = Ht(TSD_deg)Constant-current pulldownDevice turns all output channels off.Auto recovery
FAULT = LFault is detectedDevice turns all remained channels off and keeps retry on the failed channels. After the Fault pin is released, all channels are turned on after t(FAULT_recovery) time.
No fault is detectedDevice turns all output channels off.