7.12 Insulation Characteristics Curves

TA (°C)

0

50

100

150

200

0

100

200

300

400

500

D001

AVDD = DVDD = 3.6 V, AMC1311B

AVDD = DVDD = 5.5 V

Figure 7-2. Thermal Derating Curve for Safety-

Limiting Current per VDE

TA (qC)

0

50

100

150

200

0

200

400

600

800

1000

1200

1400

1600

D002

D002

Figure 7-3. Thermal Derating Curve for Safety-

Limiting Power per VDE

Stress Voltage (VRMS)

500

1500 2500 3500 4500 5500 6500 7500 8500 9500

1.E+1

1.E+2

1.E+3

1.E+4

1.E+5

1.E+6

1.E+7

1.E+8

1.E+9

1.E+10

1.E+11

Safety Margin Zone: 1800 VRMS, 254 Years

Operating Zone: 1500 VRMS, 135 Years

20%

87.5%

TDDB Line (<1 PPM Fail Rate)

TA up to 150°C, stress-voltage frequency = 60 Hz, isolation working voltage = 1500 VRMS, operating lifetime = 135 years

Figure 7-4. Reinforced Isolation Capacitor Lifetime Projection

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AMC1311

SBAS786C – DECEMBER 2017 – REVISED JUNE 2022

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