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Part Number: TPS63070EVM-693
Could you please provide me the screenshot of the output ripple voltage with TPS63070EVM-693 under the following conditions ?
Test Conditions- VIN = 4.0V- VOUT = 5.0V- Output Load = 1A- Switching Mode = Forced PWM mode
Thanks for asking. I have no such graph at hand. Please wait me do a test.
I'll share it today if everything going well.
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In reply to Minqiu Xie:
Thank you for your quick response.
I am looking forward to getting the information from you.
In reply to Sadanori Kato:
I checked the stock, there is no TPS63070EVM-693. So I do the test based on TPS630702EVM. These two devices and EVMs are highly similar, only the discharge function. Its OK to have a reference.
Test condition: Vin=4V, Vout=4.95V, Load=1A, mode set: FPWM. Temp=25℃.
Thank you for the information.
According the screenshot, is the output ripple voltage less than 30mVpp ?Could you please meareue the peak to peak voltage just in case ?
I have an additional question, is the output load which you used the electronic load with the current mode ?
Please check the measurement with cursor. And I use the source meter as the load, in constant current mode.
Thank you for your strong support.
I understood and will contact you if I get additional questions from our customer.
I just got additional questions as follows.
Q1. Filter Setting for OscilloscopeCould you please tell me the filter setting for the oscilloscope ?
Q2. RemeasurementCould you please measure the output ripple voltage with disabling the low pass filter if limiting the bandwidth with the low pass filter ?
Q1: I used 20MHz before. Generally, the major ripple are in this bandwidth.
Q2. Please check the graph. The extra high noise could be reduce with a ferrite bead is you care it a lot.
Adding a ferrite bead to the output is a workaround, but should a π-type filter be formed ?Additionally, please tell me the capacitance value to be added.
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