Presented by Christian Poivey at the 2006 Single Event Effects Symposium (SEESYM), April 10, 2006 to April 12, 2006 in Long Beach, CA. Single Event Transients in Low Voltage Dropout (LVDO) Voltage Regulators C. Poivey 1 , H. Kim 1 , C. Seidleck 1 , K. LaBel 2 J. Karsh 2 , S. Pursley 2 ,I. Kleyner 2 , R. Katz 2 , S. Pursley 2 1 MEI Technologies 2 NASA - GSFC
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Voltage Dropout (LVDO) Voltage Single Event … by Christian Poivey at the 2006 Single Event Effects Symposium (SEESYM), April 10, 2006 to April 12, 2006 in Long Bea ch, CA. Single
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Presented by Christian Poivey at the 2006 Single Event Effects Symposium (SEESYM), April 10, 2006 to April 12, 2006 in Long Beach, CA.
Single Event Transients in Low Voltage Dropout (LVDO) Voltage
Regulators
C. Poivey1, H. Kim1, C. Seidleck1, K. LaBel2J. Karsh2, S. Pursley2,I. Kleyner2, R. Katz2,
S. Pursley2
1 MEI Technologies2 NASA - GSFC
2Presented by Christian Poivey at the 2006 Single Event Effects Symposium (SEESYM), April 10, 2006 to April 12, 2006 in Long Beach, CA.
Outline
• Background• Summary of recent test results• Mitigation• Conclusion
3Presented by Christian Poivey at the 2006 Single Event Effects Symposium (SEESYM), April 10, 2006 to April 12, 2006 in Long Beach, CA.
Background
• Voltage regulators are sensitive to heavy ion induced Single Event Transients (SET)– SET amplitude is generally small (<1-2V) because of
large output capacitors used in typical applications
Vin
VoltageRegulator
Vout
GND
4Presented by Christian Poivey at the 2006 Single Event Effects Symposium (SEESYM), April 10, 2006 to April 12, 2006 in Long Beach, CA.
Background
• SET in voltage regulators are a concern for low voltage applications (< 5V)– Overvoltages may cause destructive conditions– Undervoltages may cause functional interrupts and electrical
latch-up conditions• SET in 1.5V voltage regulators are critical for FPGA
RTAXpower supply applications– DC core absolute max rating = 1.6V– 1.5V core supply voltage recommended operating conditions:
1.425V min, 1.575V max• Summary of results on test candidates for 1.5V voltage
regulators– RHLP4913, STM– MSK5900, MS Kennedy– Discrete design, Space Power Electronics
http://radhome.gsfc.nasa.gov
5Presented by Christian Poivey at the 2006 Single Event Effects Symposium (SEESYM), April 10, 2006 to April 12, 2006 in Long Beach, CA.
RHLP4913
1.00E-06
1.00E-05
1.00E-04
1.00E-03
1.00E-02
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0
LET (MeVcm2/mg)
Cro
ss s
ectio
n (c
m2 /d
ev)
SN101, Vin=3.3V, Cout=10uF, Iload=1600mA
SN101, Vin=3.3V, Cout=10uF, Iload=560mA
SN101, Vin=3.3V, Cout=10uF, Iload=300mA
SN101, Vin=3.3V, Cout=10uF, Iload=110mA
SET sensitivity increases with load
6Presented by Christian Poivey at the 2006 Single Event Effects Symposium (SEESYM), April 10, 2006 to April 12, 2006 in Long Beach, CA.
RHLP4913, Typical SETs, Cout=10µµµµF
Run 21, RHFL4913, Cout=10uF, Iout=300 mA, LET=75MeVcm2/mg