SNVSCN2 September   2024 TPS37100-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 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 Switching Characteristics
    7. 6.7 Timing Requirements
    8. 6.8 Timing Diagrams
    9. 6.9 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Input Voltage (VDD)
        1. 7.3.1.1 Undervoltage Lockout (VPOR < VDD < UVLO)
        2. 7.3.1.2 Power-On Reset (VDD < VPOR )
      2. 7.3.2 SENSE
        1. 7.3.2.1 Adjustable Voltage Thresholds
        2. 7.3.2.2 SENSE Hysteresis
        3. 7.3.2.3 Reverse Polarity Protection
      3. 7.3.3 Output Logic Configurations
        1. 7.3.3.1 Open-Drain
        2. 7.3.3.2 Active-Low (OUT A and OUT B)
        3. 7.3.3.3 Latching
      4. 7.3.4 User-Programmable Release Time Delay
        1. 7.3.4.1 Deassertion Time Delay Configuration
      5. 7.3.5 User-Programmable Sense Delay
        1. 7.3.5.1 Sense Time Delay Configuration
      6. 7.3.6 Analog Out
      7. 7.3.7 Built-in Self-Test
        1. 7.3.7.1 Latching
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design 1: Off-Battery Monitoring
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Power Dissipation and Device Operation
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
      3. 8.4.3 Creepage Distance
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.2.2 SENSE Hysteresis

TPS3710x-Q1 device offers built-in hysteresis around the UV and OV thresholds to avoid erroneous OUT A and OUT B deassertions. The hysteresis is opposite to the threshold voltage; for overvoltage options the hysteresis is subtracted from the positive threshold (VITP), for undervoltage options hysteresis is added to the negative threshold (VITN). Figure 7-4 and Figure 7-5 highlight the OUT A and OUT B behavior based on a window variant.

TPS37100-Q1 TPS37102-Q1 Hysteresis (Overvoltage Active-Low)Figure 7-4 Hysteresis (Overvoltage Active-Low)
TPS37100-Q1 TPS37102-Q1 Hysteresis (Undervoltage Active-Low)Figure 7-5 Hysteresis (Undervoltage Active-Low)
Table 7-1 Common Adjustable Threshold Hysteresis Lookup Table
TARGETDEVICE HYSTERESIS OPTION
ADJUSTABLE THRESHOLDTOPOLOGYRELEASE VOLTAGE (V)
800mVOvervoltage

792mV

-1%

800mV

Overvoltage

784mV

-2%

800mVOvervoltage

760mV

-5%
800mVOvervoltage

720mV

-10%

800mV

Undervoltage

808mV

1%

800mVUndervoltage

816mV

2%

800mVUndervoltage

840mV

5%
800mVUndervoltage

880mV

10%

Table 7-1 shows a sample of hysteresis for the 800mV adjustable variant of TPS3710x-Q1.

Knowing the amount of hysteresis voltage, the release voltage for the undervoltage (UV) channel is (VITN + VHYS) and for the overvoltage (OV) channel is (VITP - VHYS).

Undervoltage (UV)

VITN = 800mV

Voltage Hysteresis (VHYS) = 2% = 16mV

Release Voltage = VITN + VHYS = 816mV

Overvoltage (OV)

VITP = 800mV

Voltage Hysteresis (VHYS) = 2% = 16mV

Release Voltage = VITP - VHYS = 784mV