米6体育平台手机版

SNVA966 July 2020 – MONTH LP8864-Q1 , LP8864S-Q1 , LP8866-Q1 , LP8866S-Q1

Trademarks
1Fault Handling Routine
2Different Fault and Diagnostic Handling Method Recommendation
1. 2.1 Different Fault Handling Method
2. 2.2 Different Diagnostic Wrong Information Handling Method
  1. 2.2.1 System-Level Critical Wrong Diagnostic Information
  2. 2.2.2 System Level Sustainable Wrong Diagnostic Information
3Summary
A Fault-Related Functions
1. A.1 Protection and Fault Detections
  1. A.1.1 Supply Faults
    1. A.1.1.1 VIN Undervoltage Faults (VINUVLO)
    2. 16
    3. A.1.1.2 VIN Overvoltage Faults (VINOVP)
    4. A.1.1.3 VDD Undervoltage Faults (VDDUVLO)
    5. A.1.1.4 VIN OCP Faults (VINOCP)
    6. A.1.1.5 Charge Pump Faults (CPCAP, CP)
    7. A.1.1.6 Boost Sync Clock Invalid Faults (BSTSYNC)
    8. A.1.1.7 CRC Error Faults (CRCERR)
  2. A.1.2 Boost Faults
  3. A.1.3 LED Faults
    1. A.1.3.1 Open LED Faults (OPEN_LED)
    2. A.1.3.2 Short LED Faults (SHORT_LED)
    3. A.1.3.3 LED Short to GND Faults (GND_LED)
    4. A.1.3.4 Invalid LED String Faults (INVSTRING)
    5. A.1.3.5 I2C Timeout Faults
  4. A.1.4 Overview of the Fault and Protection Schemes
2. A.2 Programming Examples
  1. A.2.1 Clearing Fault Interrupts
  2. A.2.2 Disabling Fault Interrupts
  3. A.2.3 Diagnostic Registers

A.1.1.6 Boost Sync Clock Invalid Faults (BSTSYNC)

If the LP886XX-Q1 device is enabled while a valid external SYNC clock is running and BST_SYNC stops or changes to an invalid frequency (< 75 kHz), the LP886XX-Q1 defaults to internal clock frequency selected by BST_FSET resistor and BSTSYNC_STATUS bit will be set. If BST_SYNC input is held high, spread spectrum is enabled. If the SYNC input is held low, the spread spectrum is disabled.