SBOK079 October   2023 TPS7H2140-SEP

PRODUCTION DATA  

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Single-Event Effects (SEE)
  6. 3 Device and Test Board Information
  7. 4 Irradiation Facility and Setup
  8. 5 Depth, Range, and LETEFF Calculation
  9. 6 Test Setup and Procedures
  10. 7 Destructive Single-Event Effects (DSEE)
    1. 7.1 Single-Event Latch-up (SEL) Results
    2. 7.2 Single-Event Burnout (SEB) and Single-Event Gate Rupture (SEGR) Results
  11. 8 Single-Event Transients (SET)
  12. 9 Event Rate Calculations
  13. 10Summary
  14. 11References

7.1 Single-Event Latch-up (SEL) Results

During SEL characterization, the device was heated using a TDH35P10R0JE discrete power resistor soldered right under the thermal vias on the bottom layer of the board, maintaining the DUT temperature at 125°C. Prior to radiation, the die to thermocouple temperature was verified using a FLIR IR-camera.

The species used for the SEL testing was a silver (109Ag) ion with an angle-of-incidence of 0° for an LETEFF = 48 MeV × cm2 / mg. For more details, see Section 5). The kinetic energy in the vacuum for this ion is 1.634 GeV (15-MeV /amu line). Flux of approximately 105 ions / cm2 × s and a fluence of approximately 107 ions / cm2 were used for the six runs. Run duration to achieve this fluence was approximately two minutes. The six devices were powered up and exposed to the heavy-ions using the maximum recommended voltage of 32 V and maximum load of 5.4 A (1.35 A per channel). The device was set up with OUT1 operating in a single configuration and OUT2, OUT3, OUT4 were operated in a parallel configuration. See Figure 6-1 for more details. OUT1 was loaded to 1.35 A, while OUT2, OUT3, and OUT4 were in parallel loaded to 4.05 A (1.35 A per channel). No SEL events were observed during all six runs, which indicates that the TPS7H2140-SEP is SEL-free. Table 8-3 lists the SEL test conditions and results. Figure 7-2 shows a typical plot of IIN versus time for run 1.

Table 7-1 Summary of TPS7H2140-SEP SEL Test Condition and Results

Pre-Production units refers to P-type symbolized units. Productions units refers to units that went through the entire -SEP flow.

Run Number Type of Unit Unit Number Ion LETEFF (MeV × cm2 / mg) FLUX (ions × cm2 / mg) Fluence (Number ions)
1 Preproduction 2 109Ag 48 1.20 × 105 9.95 × 106
2 Preproduction 3 109Ag 48 8.20 × 104 9.98 × 106
3 Preproduction 4 109Ag 48 1.04 × 105 1.00 × 107
4 Production 5 109Ag 48 2.70 × 105 9.85 × 106
5 Production 6 109Ag 48 1.02 × 105 1.00 × 107
6 Production 7 109Ag 48 1.00 × 105 1.00 × 107
Using the MFTF method shown in Single-Event Effects (SEE) Confidence Interval Calculations and combining (or summing) the fluences of the six runs at 125°C (5.78 × 107), the upper-bound cross-section (using a 95% confidence level) is calculated as:

σ S E L   ≤   6.38   ×   10 - 8   c m 2   /   d e v i c e   f o r   L E T E F F   =   48   M e V   ×   c m 2 / m g   a n d   T J   =   125 ° C .

GUID-20230913-SS0I-TS6W-GTXG-88QF1FL6LNTH-low.svg Figure 7-1 IIN versus Time for Run 1 of the TPS7H2140-SEP at TJ = 125°C