SNVSBJ1E october   2020  – august 2023 TPS37

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Timing Diagrams
    8. 7.8 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Input Voltage (VDD)
        1. 8.3.1.1 Undervoltage Lockout (VPOR < VDD < UVLO)
        2. 8.3.1.2 Power-On Reset (VDD < VPOR )
      2. 8.3.2 SENSE
        1. 8.3.2.1 SENSE Hysteresis
      3. 8.3.3 Output Logic Configurations
        1. 8.3.3.1 Open-Drain
        2. 8.3.3.2 Push-Pull
        3. 8.3.3.3 Active-High (RESET)
        4. 8.3.3.4 Active-Low (RESET)
      4. 8.3.4 User-Programmable Reset Time Delay
        1. 8.3.4.1 Reset Time Delay Configuration
      5. 8.3.5 User-Programmable Sense Delay
        1. 8.3.5.1 Sense Time Delay Configuration
      6. 8.3.6 Manual RESET (CTR1 / MR) and (CTR2 / MR) Input
  10. 9 Device Functional Modes
  11. 10Application and Implementation
    1. 10.1 Adjustable Voltage Thresholds
      1. 10.1.1 Application Curves
    2. 10.2 Application Information
      1. 10.2.1 Typical Application
        1. 10.2.1.1 Design 1: High Voltage – Fast AC Signal Monitoring For Power Fault Detection
          1. 10.2.1.1.1 Design Requirements
          2. 10.2.1.1.2 Detailed Design Procedure
    3. 10.3 Power Supply Recommendations
      1. 10.3.1 Power Dissipation and Device Operation
    4. 10.4 Layout
      1. 10.4.1 Layout Guidelines
      2. 10.4.2 Layout Example
      3. 10.4.3 Creepage Distance
  12. 11Device and Documentation Support
    1. 11.1 Device Nomenclature
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary

Package Options

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

8.3.2 SENSE

The TPS37 high voltage family integrates two voltage comparators, a precision reference voltage and trimmed resistor divider. This configuration optimizes device accuracy because all resistor tolerances are accounted for in the accuracy and performance specifications. Device also has built-in hysteresis that provides noise immunity and ensures stable operation.

Channels are independent of each other, meaning that SENSE1 and SENSE2 and respective outputs can be connected to different voltage rails.

Although not required in most cases, for noisy applications good analog design practice is to place a 10 nF to
100 nF bypass capacitor at the SENSEx inputs in order to reduce sensitivity to transient voltages on the monitored signal. SENSE1 and SENSE2 pins can be connected directly to VDD pin.