TIDUDG1 July   2022

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 MIL-STD-1275E versus MIL-STD-1275D
      2. 2.2.2 Reverse Polarity Event
      3. 2.2.3 Voltage Spike Event
      4. 2.2.4 Voltage Spike Event: Component Selection
      5. 2.2.5 Voltage Surge Event
      6. 2.2.6 Voltage Surge Event: Component Selection
    3. 2.3 Highlighted Products
      1. 2.3.1 LM7480-Q1
      2. 2.3.2 LM5069
  8. 3Hardware, Testing Requirements and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Test Setup
    3. 3.3 Test Results
  9. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
    2. 4.2 Documentation Support
    3. 4.3 Support Resources
    4. 4.4 Trademarks

2.2.1 MIL-STD-1275E versus MIL-STD-1275D

The TIDA-010242 is design to meet the specifications that are outlined by MIL-STD-1275E. However, there are several differences between the MIL-STD-1275E standard and the MIL-STD-1275D standard. Table 2-1 shows the difference between the two standards.

Table 2-1 MIL-STD-1275E vs MIL-STD-1275D
MIL-STD-1275E MIL-STD-1275E
Operating mode Single Operating Mode Generator-Only Mode (G) and Normal Operating Mode (N)
Starting disturbance limits 12-V to 33-V cranking start-up No start-up limits
Spike Event +250 V for 70 μs ≥ +100 V at 1 ms and –250 V for 70 μs ≥ +18 V at 1 ms. Injected spike energy = 2 J and Emitted Voltage Spike = 125 mJ (G) ±250 V for 70 μs ≥ ±100 V at 1 ms. Total energy 15 mJ
(N) ±250 V for 70 μs ≥ ±40 V at 1 ms. Total energy 15 mJ
Surge Event 100 V for 50 ms ≥ 33 V for 500 ms. Injected energy surge = 60 J (G) 100 V for 50 ms ≥ 40 V at 500 ms. Source impedance 500 mΩ
(G) 40 V for 50 ms ≥ 32 V at 500 ms. Source impedance 20 mΩ