BQ24740_14 Datasheet, PDF (15/33 Pages) Texas Instruments – Host-Controlled Multi-Chemistry Battery Charger

bq24740
www.ti.com............................................................................................................................................... SLUS736C – DECEMBER 2006 – REVISED MARCH 2009
NEAR 100% DUTY CYCLE BOOTSTRAP RECHARGE
PULSE
V_PH
V_HIDRV
BATTERY SHORTED CHARGER RESPONSE,
OVERCURRENT PROTECTION (OCP) AND CHARGE
CURRENT REGULATION
V_BAT
V_LODRV
I_L
t − Time = 4 ms/div
Figure 24.
CONTINUOUS CONDUCTION MODE (CCM) SWITCHING
WAVEFORMS
V_PH
V_HIDRV
I_L
t − Time = 400 ms/div
Figure 25.
DISCONTINUOUS CONDUCTION MODE (DCM)
SWITCHING WAVEFORMS
V_PH
V_HIDRV
V_LODRV
I_L
V_LODRV
t − Time = 1 ms/div
Figure 26.
I_L
t − Time = 1 ms/div
Figure 27.
DPMDET RESPONSE WITH TRANSIENT SYSTEM LOAD
DPMDET
I_BAT
I_sys
I_IN
t - Time = 20 ms/div
Figure 28.
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