SLLSFS6A September   2024  – December 2024 TIOL221

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 ESD Ratings - IEC Specifications
    4. 5.4 Recommended Operating Conditions
    5. 5.5 Thermal Information
    6. 5.6 Electrical Characteristics
    7. 5.7 Switching Characteristics
    8. 5.8 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1  Wake-Up Detection
      2. 7.3.2  Current Limit Configuration
        1. 7.3.2.1 Current Limit Configuration in Pin-Mode
        2. 7.3.2.2 Current Limit Configuration in SPI mode
      3. 7.3.3  CQ Current Fault Detection, Indication and Auto Recovery
      4. 7.3.4  DO Current Fault Detection, Indication and Auto Recovery
      5. 7.3.5  CQ and DI Receivers
      6. 7.3.6  Fault Reporting
        1. 7.3.6.1 Thermal Warning, Thermal Shutdown
      7. 7.3.7  The Integrated Voltage Regulator (LDO)
      8. 7.3.8  Reverse Polarity Protection
      9. 7.3.9  Integrated Surge Protection and Transient Waveform Tolerance
      10. 7.3.10 Undervoltage Lock-Out (UVLO)
      11. 7.3.11 Interrupt Function
    4. 7.4 Device Functional Modes
      1. 7.4.1 CQ and DO Tracking mode
    5. 7.5 SPI Programming
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Driving Capacitive Loads
        2. 8.2.2.2 Driving Inductive Loads
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 TIOL221 Registers
  11. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Mechanical Data

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RGE|24
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3.6.1 Thermal Warning, Thermal Shutdown

The TIOL221 has three separate thermal sensors: one for each of the driver and another one for the LDO.

If the die temperature around the CQ driver exceeds T(WRN), the NFLT1 flag is held low indicating a potential over temperature problem. When the TJ exceeds T(SDN), the CQ driver is disabled. The LDO and DO driver remain operational as long as the respective thermal sensors do not exceed T(SDN). As soon as the temperature drops below the temperature threshold (and after T(HYS)), the internal circuit re-enables the driver, subject to the state of the EN1 and TX1 pins.

If the die temperature around the DO driver exceeds T(WRN), the NFLT2 flag is held low indicating a potential over temperature problem. When the TJ exceeds T(SDN), the DO driver is disabled. The LDO and CQ driver remain operational as long as the respective thermal sensors do not exceed T(SDN). As soon as the temperature drops below the temperature threshold (and after T(HYS)), the internal circuit re-enables the driver, subject to the state of the EN2 and TX2 pins.

The thermal sensor near the LDO detects the temperature exceeding the T(SDN). The LDO and both the drivers are turned off and RESET is held low. As soon as the temperature drops below the temperature threshold (and after T(HYS)), the internal circuit re-enables the LDO and the drivers and RESET is released after the VOUT is above the UVLO threshold.