BQ24751B Datasheet, PDF (30/38 Pages) Texas Instruments – Host-Controlled Multi-Chemistry Battery Charger with Low Iq and System Power Selector

Not Recommended For New Designs
bq24751B
SLUS835A – JULY 2008 – REVISED MARCH 2009 .......................................................................................................................................................... www.ti.com
Figure 39 depicts the recommended input filter design. The measured input voltage and current waveforms are
shown in Figure 40. The input voltage spike has been well damped by adding a 2Ω resistor, while keeping the
capacitance low.
V_IN
V_PVCC
2W
(0.5 W,
1210 anti-surge)
Rext
2.2 mF
C1
(25 V, 1210)
0.1 mF
(50 V, 0805, very
close to PVCC)
C2
Figure 39. Recommended Input Filter Design
Figure 40. Adapter DC Side Hot Plug-in Test Waveforms
30
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