AVX代理商-钽电容电压降额准则
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多年来,有人要求钽电容器制造商提供有关使用其产品的一般建议时,大家的共识是“应至少施加50%的降额电压”。 此后的经验法则已成为钽电容技术最流行的设计指南——AVX贴片钽电容代理商。
钽电容最大电流计算案例:
Vbat=3.2V(2 cell battery)
Capacitor=220uF 6.3V low ESR,suge tantalum capacitor,The 100mΩ,6.3V capacitor is selected by “rule of thumb”50% derating rule e.g. 6.3v capacitor is used for the 3.2v o/p.
Typical resistance of circuit components:
Z bat = 60m?, Z diode = 70m?, Z L(100kHz) = 70m?, Z cap= ESR (100kHz) = 100m?
Hence, the max current through the circuit based on [4] is:
The D case 220μF 6.3V 100m? is designed and tested for peak current surge in accordance with[2] (R=0.7 for surge robust series):
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