TIDUF26 june 2023 BQ24072 , LMR36520 , TLV62568 , TPS2116
The ripple on the BMOut power rail varies significantly between battery usage only versus a PWRin source with battery power assist. When using only the battery, the BM24072 connects the battery to the output by closing an internal FET. As a result, the noise during purely battery operation is equal or less than the noise floor of the oscilloscope used for measurement. Figure 65, Figure 66, and Figure 67 (Figure 3-47, Figure 3-48, and Figure 3-49) show an increased ripple when using a source other than the battery.
Figure 3-47 “BMOut” Ripple (0 A; Battery
Source Only)
Figure 3-48 “BMOut” Ripple (1 A; Battery
Source Only)
Figure 3-49 “BMOut” Ripple (1 mA; Battery
and USB Sources)
Figure 3-50 “BMOut” Ripple (1 A; Battery
and USB Sources)
Figure 3-51 “BMOut” Ripple (500 mA;
Battery and USB Sources)