BQ24188_15 Datasheet, PDF (14/52 Pages) Texas Instruments – bq24188 2A, 30V, Host-Controlled Single-Input, Single Cell Switchmode Li-Ion Battery Charger with Power Path Management and USB-OTG Support

bq24188
SLUSC44A – DECEMBER 2014 – REVISED MAY 2015
Functional Block Diagram (continued)
PMID
IN
www.ti.com
4.8-V
Reference
DRV
V_BOOST Amp
+
Q1
V_{IN_BOOST}
V_{BURST_ENT}
+
Burst Mode Enter
Comparator
+
DC-DC
CONVERTER
PWM LOGIC
Low Side Current
Limit Comparator
AND
COMPENSATION
I_BLIMITI
V_DRV
V_{BURST_EXT}
Q2
Burst Mode Exit
Comparator
V_BOOSTSHRT
Boost Short Circuit
Comparator
V_BOOSTOVP
V_BOOST
OVP Comparator
Battery SC Comparator
V_BAT
V_{BIAS Battery Short}
+
Q3
Circuit
I_LIM(DISCH)
CD
SDA
SCL
Hi-Z
Mode
2
IC
interface
STAT
Digital Control
BOOT
SW
PGND
SYS
BAT
BGATE
INT
TS
Figure 8. Block Diagram in Boost Mode
14
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