TIDUDJ6B August   2022  – February 2023 OPA388-Q1

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
    1. 1.1 Key System Specifications
  7. 2System Overview
    1. 2.1 Block Diagrams
    2. 2.2 Highlighted Products
      1. 2.2.1 TPSI2140-Q1
      2. 2.2.2 AMC1301-Q1
      3. 2.2.3 SN6501-Q1
    3. 2.3 System Design Theory
      1. 2.3.1 Isolation Leakage Current Theory
      2. 2.3.2 High-Voltage Measurement
  8. 3Hardware, Testing Requirements, and Test Results
    1. 3.1 Required Hardware
    2.     Hardware with Solid-State Relay
    3. 3.2 Testing and Results
      1. 3.2.1 Test Setup
      2. 3.2.2 Isolation Tests
        1. 3.2.2.1 Normal Conditions
        2. 3.2.2.2 Isolation Error at HV Positive
        3. 3.2.2.3 Isolation Error at HV Negative
        4. 3.2.2.4 Isolation Error at ¼ HV Battery Voltage
        5. 3.2.2.5 Isolation Error at ¾ HV Battery Voltage
        6. 3.2.2.6 Isolation Error at the Middle of an HV Battery Voltage
      3. 3.2.3 Solid-State Relay Isolation Tests
        1. 3.2.3.1 Normal Conditions
        2. 3.2.3.2 Isolation Error at HV Positive
        3. 3.2.3.3 Isolation Error at HV Negative
        4. 3.2.3.4 Isolation Error at ¼ HV Battery Voltage
        5. 3.2.3.5 Isolation Error at ¾ HV Battery Voltage
        6. 3.2.3.6 Isolation Error at the Middle of an HV Battery Voltage
      4. 3.2.4 High Voltage Measurements
      5. 3.2.5 Isolation Measurement Analysis
      6. 3.2.6 Error Analysis
  9. 4Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials
    3. 4.3 PCB Layout Recommendations
      1. 4.3.1 Layout Prints
    4. 4.4 Altium Project
    5. 4.5 Gerber Files
    6. 4.6 Assembly Drawings
  10. 5Software Files
  11. 6Related Documentation
  12. 7Trademarks
  13. 8Revision History

3.2.3.2 Isolation Error at HV Positive

Simulate an isolation error condition by connecting the chassis ground line to HV positive. To understand the behavior of error conditions, the measurements were performed at different battery voltages.

GUID-20220803-SS0I-FTGZ-Z20F-T2QGZP1LFZKM-low.png Figure 3-28 HV Positive Error 100 V at No Resistance
GUID-20220803-SS0I-K9LF-Q4LZ-QGMQV25DGKCN-low.png Figure 3-29 HV Positive Error 100 V at 100-kΩ Resistance
Table 3-8 Measurements at HV Positive Error of no resistance
HV BATTERY VOLTAGE
(SUPPLIED AND MEASURED)		 MEASURED REFERENCE VOLTAGE PEAK ISO_POS VOLTAGE PEAK ISO_NEG VOLTAGE
100 2.499 2.542 2.9683
200 2.499 2.542 3.3904
300 2.499 2.542 3.8126
400 2.499 2.542 4.2352
Table 3-9 Measurements at HV Positive Error of 100-kΩ
HV BATTERY VOLTAGE
(SUPPLIED AND MEASURED)		 MEASURED REFERENCE VOLTAGE PEAK ISO_POS VOLTAGE PEAK ISO_NEG VOLTAGE
100 2.499 2.511 2.9364
200 2.499 2.481 3.3284
300 2.499 2.45 3.7204
400 2.499 2.42 4.1128