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y ϼ໚ૈᆽႝԣ‫س‬಍৒ໆीᆉ

Ń ीᆉႝԣЁκϷঁኧ‫؁‬ᡯӵΠǺ

x ೛ഢ‫؂‬λਔॄၩPtotal = P1 + P2 + P3 + …
x ೛ഢ‫؂‬В٬Ҕਔ໔ T1 , T2 , T3 …
x ‫؂‬Вᕴ઻ႝໆWday= P1 T1 + P2 T2 + P3 T2 + …
x ٩ྣ਻ং‫س܈‬಍ሡ‫ۓ؃‬рคВྣ(഍ߘϺ)നߏВኧDfailǹ೛

‫ۓ‬คВྣวႝໆᆶѳ֡วႝໆ‫ޑ‬КࣁRǴ‫܌‬аӧ഍ϺύԖ
(1-R)%‫ޑ‬ႝໆࢂค‫ٮݤ‬ᔈ

x ीᆉԖਏᆽႝ৒ໆ
C = Wday Ø Dfailu(1-R)%

x ٬ҔႉለႝԣᔈቚуӼӄ߯ኧ20%
Cdesign = C Ø 120%

x аుൻᕉԄᆽႝԣᆽႝໆऊࣁ኱Ң৒ໆ‫ޑ‬80%
Cdesign=C / 80%

y ϼ໚ૈк‫ܫ‬ႝ௓‫ڋ‬Ꮤ

Ń ኳԄ΋ǺȨ֡ϬкႝȩǴѝჹᆽႝԣкႝǶ
MOSFET M1ǵM2Ꮴ೯ǴMOSFET M3ᄒЗ

Ń ኳԄΒǺȨੌ୏кႝȩǴჹᆽႝԣкႝǴӕਔჹॄၩ‫ٮ‬ႝǶ
MOSFET M1ǵM2ǵM3ࣣӕਔᏤ೯

Ń ኳԄΟǺȨ‫ܫ‬ႝȩǴᆽႝԣ‫ܫ‬ႝǶ
MOSFET M1ǵM2ᄒЗǴԶMOSFET M3Ꮴ೯

ϼ໚ૈӀႝ݈

M1 M2 M3

қϺఁ΢ PWM ᡄᒠ ॄၩ
௓‫!ڋ‬ ႝၡ ௓‫ڋ‬

R

+- 20

ᆽႝԣ