ZHCSMO6 June   2021 TPS92633

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 Timing Requirements
    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  Power Supply (SUPPLY)
        1. 7.3.1.1 Power-On Reset
        2. 7.3.1.2 Supply Current in Fault Mode
      2. 7.3.2  Enable and Shutdown (EN)
      3. 7.3.3  Reference Current (IREF)
      4. 7.3.4  Constant-Current Output and Setting (INx)
      5. 7.3.5  Analog Current Control (ICTRL)
        1. 7.3.5.1 Off-Board Brightness Binning Resistor
        2. 7.3.5.2 NTC Resistor
      6. 7.3.6  Thermal Sharing Resistor (OUTx and RESx)
      7. 7.3.7  PWM Control (PWMx)
      8. 7.3.8  Supply Control
      9. 7.3.9  Diagnostics
        1. 7.3.9.1 IREF Short-to-GND Detection
        2. 7.3.9.2 IREF Open Detection
        3. 7.3.9.3 LED Short-to-GND Detection
        4. 7.3.9.4 LED Open-Circuit Detection
        5. 7.3.9.5 Single LED Short-Circuit Detection (SLS_REF)
        6. 7.3.9.6 LED Open-Circuit and Single LED Short-Circuit Detection Enable (DIAGEN)
        7. 7.3.9.7 Low Dropout Operation
        8. 7.3.9.8 Over-Temperature Protection
      10. 7.3.10 FAULT Bus Output With One-Fails–All-Fail
      11. 7.3.11 FAULT Table
      12. 7.3.12 LED Fault Summary
      13. 7.3.13 IO Pins Inner Connection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Undervoltage Lockout, V(SUPPLY) < V(POR_rising)
      2. 7.4.2 Normal Operation V(SUPPLY) ≥ 4.5 V
      3. 7.4.3 Low-Voltage Dropout Operation
      4. 7.4.4 Fault Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 BCM Controlled Rear Lamp with One-Fails-All-Fail Setup
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Independent PWM Controlled Rear Lamp with Off Board LED and Binning Resistor
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 接收文档更新通知
    2. 11.2 支持资源
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, 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

7.3.11 FAULT Table

Table 7-1 FAULT Table With DIAGEN = HIGH (Full Function)
FAULT BUS STATUS FAULT TYPE DETECTION MECHANISM CONTROL INPUT DEGLITCH TIME FAULT ACTION FAULT HANDLING ROUTINE FAULT RECOVERY
FAULT = H IREF short-to-GND V(IREF) <
V(IREF_SHORT_th)		 EN = H t(IREF_deg) Constant-current pulldown Device turns all output off. IREF current clamps to I(IREF_ST_Clamp). ICTRL current output are turned off. Auto recovery
IREF open I(IREF) <
I(IREF_OEPN_th)		 EN = H t(IREF_deg) Constant-current pulldown Device turns all output off. ICTRL current are turned off too. Auto recovery
SLS_REF short-to-GND No detection EN = H N/A No Action V(SLS_th_falling)= 0 V. Auto recovery
SLS_REF open No detection EN = H N/A No Action Disable single-LED short-circuit detection. Auto recovery
ICTRL short-to-GND No detection EN = H N/A No Action V(CS_REG) = 50 mV. Auto recovery
ICTRL open No detection EN = H N/A No Action V(CS_REG) = 400 mV. Auto recovery
Open-circuit or short-to-supply V(IN) – V(OUT) < V(OPEN_th_rising) EN = H
and
PWMx = H		 t(OPEN_deg) Constant-current pulldown Device turns failed output off and retries with constant current I(retry), ignoring the PWM input. Auto recovery
Short-to-ground V(OUT) <
V(SG_th_falling)
OR
V(RES) <
V(SG_th_falling)		 EN = H
and
PWMx = H		 t(SG_deg) Constant-current pulldown Device turns failed output off and retries with constant current I(retry), ignoring the PWM input. Auto recovery
Single LED short-circuit V(IN) – V(OUT) >
V(OPEN_th_falling)
&
V(SG_th_falling)
< V(OUT) <
V(SLS_th_falling)		 EN = H
and
PWMx = H		 t(SLS_deg) Constant-current pulldown Device turns failed output off and retries every 10 ms by turning output on for 300 µs when PWM input is logic high. Auto recovery
Over-temperature TJ > T(TSD) EN = H t(TSD_deg) Constant-current pulldown Device turns all output channels off, SLS_REF and ICTRL off. Auto recovery
FAULT = L Fault is detected Device turns off remained channels in operation.
No fault is detected Device turns all output channels off, IREF, SLS_REF and ICTRL off.
Table 7-2 FAULT Table With DIAGEN = LOW (Full Function)
FAULT BUS STATUS FAULT TYPE DETECTION MECHANISM CURRENT OUTPUT DEGLITCH TIME FAULT BUS FAULT HANDLING ROUTINE FAULT RECOVERY
FAULT= H IREF short-to-GND V(IREF) <
V(IREF_SHORT_th)		 EN = H t(IREF_deg) Constant-current pulldown Device turns all output off. IREF current clamps to I(IREF_ST_Clamp). ICTRL current output are turned off. Auto recovery
IREF open I(IREF) <
I(IREF_OPEN_th)		 EN = H t(IREF_deg) Constant-current pulldown Device turns all output off. ICTRL current are turned off too. Auto recovery
SLS_REF short-to-GND No detection EN = H N/A No Action V(SLS_th_falling)= 0 V. Auto recovery
SLS_REF open No detection EN = H N/A No Action Disable single-LED short-circuit detection. Auto recovery
ICTRL short-to-GND No detection EN = H N/A No Action V(CS_REG) = 50 mV. Auto recovery
ICTRL open No detection EN = H N/A No Action V(CS_REG) = 400 mV. Auto recovery
Open-circuit or short-to-supply Ignored
Single LED short-circuit
Short-to-ground V(OUT) <
V(SG_th_falling)
OR
V(RES) <
V(SG_th_falling)		 EN = H
and
PWMx = H		 t(SG_deg) Constant-current pulldown Device turns output off and retries with constant current I(retry), ignoring the PWM input. Auto recovery
Over-temperature TJ > T(TSD) EN = H t(TSD_deg) Constant-current pulldown Device turns all output channels off, SLS_REF and ICTRL off. Auto recovery
FAULT= L Fault is detected Device turns all output channels off and keeps retry on the failed channels.
No fault is detected Device turns all output channels off, IREF, SLS_REF and ICTRL off.
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