SLVK158 November   2023 TPS7H6003-SP

PRODUCTION DATA  

  1.   1
  2.   TPS7H6003-SP Single-Event Effects (SEE)
  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.   A References

8 Single-Event Transients (SET)

The primary focus of SETs were heavy-ion-induced transient upsets on the output signals HO and LO (with a 1-nF capacitive load on the outputs as seen in block diagram). SET testing was done at room temperature across three ion species, 109Ag, 141Pr, and 165Ho which produced a range of LETEFF of 48 to 75 MeV × cm2 / mg for more details, see Ion LETEFF, Depth, and Range in Silicon. HO and LO were monitored by two different scopes, a NI PXIe-5110 and a MSO58B oscilloscope. During PWM and IIMSW mode testing, each scope was configured to trigger based on an “outside” pulse width measurement, where the window for the output signal was 20% (±200ns). During the IIMST modes, the same two scopes were used, however, the trigger was a window which was 500-mV above or 500-mV below 0-V with the signals AC-coupled. The signals in this mode were monitored to see if the signal ever went low when it should have been high, or high when it should have been low. During all SET testing, there was NO cross-conduction in either PWM or IIM mode and in IIM mode the only transient that occurred was a high to low transient, no signals ever “turned on” when they weren’t supposed to. For all recorded transients, there were never cases where the pulse deviated to be greater than 20%. The only captured SETs were missed pulses. During the IIM mode testing with LO high and during the PWM mode testing during a LO transient, the signature of the transient shows that there is some overshoot (approximately 410 mV during static and approximately 480 mV during switching) before leveling back out to 5 V during the turn on. This is consistent across all transients, but all signals do recover back to nominal after the overshoot in the order of µs. Because of this BP5L was monitored on the MSO58B in order to show that this overshoot is from the internal LDO.

Waveform size, sample rate, trigger type, value, and signal for all scopes used is listed in Table 8-1.

Table 8-1 Scope Settings Note: Only one signal was used as a trigger source at a time, this table just present all posible sources for a given scope, the same is valid for the trigger type. All percentage specified on the trigger value are deviation from the nominal value.
Scope Model Trigger Signal Trigger Type Trigger Value Record Length Sample Rate
MSO58B LO Pulse Width/Window ± 20% / ±500 mV 20 μs / div 250 MS / s
BP5L N/A N/A
PXIe-5110 HO Pulse Width/Window ± 20% / ±500-mV 20k 100 MS / s
Table 8-2 Summary of TPS7H6003-SP SET Test Condition and Results
Run Number Unit Number Ion LETEFF (MeV × cm2 / mg) Flux (ions × cm2/ mg) Fluence (number of ions) Mode MSO58B LO Number PXIe-5110 HO Number
22 1 165Ho 75 6.33 × 104 1.00 × 107 PWM 7 5
23 3 165Ho 75 8.12 × 104 1.00 × 107 IIMENSW 5 6
24 3 165Ho 75 7.14 × 104 1.00 × 107 IIMDISSW 2 2
25 4 165Ho 75 6.87 × 104 1.00 × 107 IIMDISST 0 4
26 4 165Ho 75 6.50 × 104 1.00 × 107 IIMDISST 4 0
27 1 141Pr

65

 1.13 × 105 9.99 × 106 PWM 1 3
28 3 141Pr 65 1.09 × 105 1.00 × 107 IIMDISST 2 0
29 3 141Pr 65 1.07 × 105 1.00 × 107 IIMDISST 0 1
30 4 141Pr 65 1.11 × 105 1.00 × 107 IIMDISSW 0 0
31 4 141Pr 65 1.28 × 105 1.00 × 107 IIMENSW 0 1
32 1 109Ag 48 9.79 × 104 1.00 × 107 PWM 0 0
33 3 109Ag 48 1.00 × 105 1.00 × 107 IIMDISST 0 0
34 3 109Ag 48 1.00 × 105 1.00 × 107 IIMDISST 0 0

Upper and lower bound cross-sections were calculated to 95% confidence. Weibull fit was done to calculate the onset value.

GUID-20230922-SS0I-F1CG-PQ5T-3DGJDXTTXFZC-low.jpg Figure 8-1 Cross Section and Weibull Fit for HO and LO SET Test Cases

A Weibull fit was conducted to determine the best estimation of onset since there were transients at 65 MeV, but none at 48 MeV. Because of the gap between LET levels there is high probability that the true onset is somewhere between the two tested levels. Based on this fit the estimated true onset for the TPS7H6003-SP is 58 MeV.

Table 8-3 Weibull Parameters for HO and LO SET Test Cases
Parameter Units
Upper Bound Cross-Section (cm2) 4.87 × 10–7
Cross-Saturation (cm2) 3.50 × 10–7
Onset (MeV-cm2/mg) 58
w 10
s 3
GUID-20230922-SS0I-NMZZ-SXDF-7VBQ1JPLTXH0-low.svg Figure 8-2 HO SET Run 22 (PWM Mode, fsw = 500 kHz)
GUID-20230922-SS0I-FHJH-BPZ2-3TLTD4ZSKSZC-low.svg Figure 8-3 LO SET Run 22 (PWM Mode, fsw = 500 kHz)
GUID-20230922-SS0I-SBBB-RGRP-ZDLZH10FHNK8-low.svg Figure 8-4 HO SET Run 25 (IIM-Disabled Mode, EN/HI = 5 V)
GUID-20230922-SS0I-8SV0-LNXN-9CHCC838CQ8R-low.svg Figure 8-5 LO SET Run 26 (IIM-Disabled Mode, PWM/LI = 5 V)