Thank for your reply
I tried 33uF and 470uF、but noise still exist.
By the way, if the load is increased further, the PFM mode will not be entered and the noise will disappear. However, the noise does not disappear even if the OLED and the resistor …
Yichen,
For the first revision of the design, the smaller inductor will be populated and tested. If there are issues with audible noise then the larger 4.2 mm x 4.2 mm inductor will be tried. If audible noise is still present then we'll look at using…
Part Number: TPS61070 Other Parts Discussed in Thread: TPS61071 , Hi,
How much is efficiency at Vin=1.8V, Vout=3.3V, Iout=30mA?
I cannot read from the datasheet.
Best Regards,
Kuramochi
we don't have this application note. for your application, you can have a look at TPS61220. the ripple of this device in power save mode is small.
if efficiency at light load is not a concern, you can also try FPWM device like TPS61071. or device…
Other Parts Discussed in Thread: TPS61071 , PCM1803A Hello,
Our customer is using a 5V TPS61071 boost converter near the PCM1803A and they are seeing noise coupling. They believe there is magnetic coupling between the 5V switching inductor and ADC. The noise…
the TPS61071 can meet the frequency requirement, but the efficiency would be not good.
the frequency change with the load condition if you need high efficiency at light load, which mean the frequency is uncontrollable. i don't have a good solution to…
