英語 での Ripple voltage の使用例とその 日本語 への翻訳
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DC ripple voltage≤1%.
A switching power supply has a ripple voltage in the output voltage. .
The large amount of capacitance eliminates most of the switching-frequency ripple voltage Figure 8.
When representing the output ripple voltage, the following equation is used.
That allows designers toreduce the output capacitor's capacitance without affecting the ripple voltage.
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Due to the large ESR, the ripple voltage that has occurred is also large.
On the output end, since the device of interest is a switching regulator,there always exists a ripple voltage stemming from switching operations.
Output ripple voltage: Achieved a low output ripple of 0.056% with reference to the rated voltage.
This reduces the switching speed and increases the ripple voltage in some cases.
Basically, the ripple voltage at the comparator's feedback node must be greater than the comparator's hysteresis band.
Even if the average output voltage can be set precisely to 1V, the ripple voltage needs to be±30mV or less.
The output ripple voltage is determined by the ripple current, which is the effective value of the peak inductor current, and the capacitor impedance.
In addition, the magnitude of the output ripple voltage depends heavily on the capacitor impedance.
What can be stated here is that by using MLCC with small ESR and ESL values,we can clearly reduce the ripple voltage and the spikes.
Modern converters with COT control also create a ripple voltage by sensing the current in the low-side MOSFET.
In the ripple voltage waveform, the Vesl of the MLCC indicated in pink is clearly low. With respect to Vesr also, it is clear that the slope is small.
As explained above, CIN is used mainly to reduce the ripple voltage, and so is a capacitor with a relatively large static capacitance.
In many cases, the output capability of a power supply unit that performs powerconversions is indicated in terms of wattage.・Output ripple voltage"Ripple" refers to pulsation.
The ESR is an important parameter that determines the output ripple voltage associated with the inductor current, and must be studied carefully.
This capacitor increases the time constant of the output filter, thus decreasing the bandwidth of the lowpass filter andsubsequently lessening the output ripple voltage.
Specifically, the output ripple voltage and the load transient response must be addressed.- Then, could you talk about the output ripple voltage?
Because the output voltage is subject to fluctuations due to load regulation orload transitions, the ripple voltage must be minimized while ensuring the basic accuracy.
Of course, even if the ripple voltage is as intended in the design, if the voltage does not ultimately satisfy the accuracy requirement of the load device, the design must be reconsidered.
The mapping indicates that the MLCC canbe an extremely powerful tool in reducing the ripple voltage Vp-p and that there is hardly any dependency of Vesl on capacitance.
The output voltage accuracy includes a ripple voltage, and so if the ripple voltage is high under low-voltage, high-current conditions, it becomes difficult to maintain the allowable difference.
Photosensor amplifiers| Hamamatsu Photonics A stabilized DC power supply with both positive andnegative outputs, a ripple voltage of 3 mVp-p or less, and a current capacity of 100 mA or more is recommended.
Figure 8. The top traces show residual ripple voltage at the outputs of Figure 5a, where the main ripple component is the switching-frequency fundamental 940kHz, in this case.
Calculation of the Output Capacitor Value The output capacitor should be selected such that the peak ripple voltage(ΔVpp)of the output is within the output ripple voltage that is the design target.
From this equation we see that in order to reduce the output ripple voltage, we should lower the ESR, increase the capacitance of the output capacitor, raise the switching frequency and reduce IL to the minimum necessary level.
This is the essence of the inductor action.・Inductor current and output ripple voltage In order to measure an inductor current and judge whether it is suitable, the inductor current and output ripple voltage are represented by equations.