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dcdc-efficiency-calc

DC-DC效率计算

电源效率计算

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Formulas

转换效率
η = (V_out × I_out)/(V_in × I_in)

输出功率与输入功率之比

Example: V_out=5V, I_out=2A, V_in=12V, I_in=1A → η≈83%

功耗
P_loss = P_in - P_out

开关损耗与导通损耗之和

Example: P_in=12W, P_out=10W → Loss=2W

Calculation Steps

  1. 1

    1. 计算输入与输出瞬时功率

  2. 2

    2. 用比值得出效率η

  3. 3

    3. 减法得到损耗P_loss

  4. 4

    4. 调整开关频率/元件减少损耗

Use the calculator above to validate numeric results.

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