SLVSGZ9B February   2025  – July 2026 TPS4141-Q1

PRODUCTION DATA  

  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 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Power Ratings
    6. 5.6 Electrical Characteristics
    7. 5.7 Switching Characteristics
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Uni-directional Voltage Sensing
      2. 6.3.2 Bi-directional Voltage Sensing
      3. 6.3.3 Bi-directional and Uni-directional Voltage Sensing
      4. 6.3.4 High Voltage Input Range
      5. 6.3.5 Calculating the Output Voltage (VAOUT)
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Divider Ratio Selection
        2. 7.2.2.2 Error Estimation
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3.2 Bi-directional Voltage Sensing

Configure the TPS4141-Q1 for bi-directional voltage sensing as Figure 6-2 shows. With bi-directional voltage sensing, REF connects to an external precision voltage reference to offset the output voltage swing of the TPS4141-Q1 amplifier. With bi-directional voltage sensing, the TPS4141-Q1 can measure both positive and negative voltages present on HV referenced to HVGND, for example –1200V to 1200V. The voltage output of AOUT swings above and below the applied voltage reference, VREF.

DIV0 and DIV1 select the divide ratio (DIV) of the TPS4141-Q1 and can dynamically change in the application. This allows for optimization of the AOUT output swing over the complete voltage range present on HV, thereby improving overall accuracy.

The divider ratio selected by DIV0 and DIV1, and reference voltage applied to REF determine the measurement accuracy of the range of voltages. See High Voltage Input Range for supported ranges. Normally, the external reference voltage is selected to allow for symmetry of allowable ranges that can be supported for positive and negative input voltages, however this is not required.

TPS4141-Q1 Bi-directional Voltage Sensing Figure 6-2 Bi-directional Voltage Sensing