开关电源电解电容寿命计算

Capacitor life time calculation worksheet (TAICON formula)

Series Max. Temp.Rated Voltage Coefficient Series Max. Temp. Lx = Lo * Ktemp * Kripple VX85 6.3~400 1.10SR85

Lx = Expected life time (hours)VR85 6.3~4000.93SM85

Lo = manufacturer estimated lifetime at maximum operating temperature VT105 6.3~400 1.10ST105 Ktemp = 2^[(To-Tx)/10] = Temperature acceleration factor VZ105 6.3~4000.70SP85

To = maximum operating temperature (105 deg C or 85 deg C)VL105 6.3~100 1.10SL85

Tx = Ta + Tr = case temperature of capacitor ST105 6.3~500.40MA85

Tr = Case temperature rise of capacitor with respect to ambient PM 6.3~1000.70MT/MU105 Kripple = 2^[d(1-Kripple1/Kripple2] = Ripple acceleration factor160~4000.55NP85 Kripple1 = (Ix/Io)^2PW/PZ105 6.3~100 1.10ET105 Kripple2 = 2^{(To-Tx)/30}160~4000.55BP85

d = rippl

e current coefficient HD/HF105 6.3~500.70AS105

Ix = actual rms ripple current PJ 6.3~1000.70HW105

Io = rated maximum rms ripple current160~4000.55HI105

PS 6.3~100 1.10HG105

160~4000.55HH105

Rated Voltage C oefficient Series Max. Temp.Rated Voltage Coefficient 6.3~500.40PY 6.3~500 1.10

4~500.40PF 6.3~1000.70 6.3~500.40PL 6.3~630.70 6.3~500.25AQ/AR105200~4500.55 6.3~500.25SD 6.3~500.40

4~500.25HT12510~500.70 4~500.40BL105160~4500.70 6.3~100 1.05TC854~500.40 6.3~1600.70TN85 6.3~500.40 50 max.0.63TW1054~500.25 200~4500.55TL105 6.3~350.25 6.3~100 1.10

6.3~160.70

6.3~100 1.10

6.3~35 1.10

Kripple1Kripple2

2.544221917

3.003545807

2.544221917

3.003545807

6.677056 1.781797436

2.544221917

3.21912069