Datasheet

Mainchargeprecharge
andVCCspowerpaths
VAC
ICTLAC1
PCHGAC
VCCS
VBATS
GND
Battery
pack
Charger
device
VBAT
ADIN 1
ADIN 0
VBUS
VCCs
Power
ICTLAC2
USB
driver
ICTLUSB1
ICTLUSB2
PCHGUSB
VPRECH
RLIMITAC
RLIMITUSB
Rs
CCV
VAC
ICTLAC 1
VCCS
VBATS
GND
Battery
pack
Charger
device
VBAT
ADIN 1
ADIN 0
VBUS
VCCs
ICTLAC2
USB
driver
ICTLUSB1
ICTLUSB2
PCHGUSB
VPRECH
PCHGAC
RLIMITAC
VBUS
ICTLUSB 1
VCCS
VBATS
GND
Battery
pack
USB
driver
VBAT
ADIN 1
ADIN 0
VAC
VCCs
ICTLUSB2
Charger
device
ICTLAC1
ICTLAC2
PCHGAC
VPRECH
PCHGUSB
Rs
RLIMITUSB
VAC
ICTLAC 1
VCCS
VBUS
Power
ICTLAC 2
ICTLUSB 1
ICTLUSB 2
PCHGUSB
VPRECH
PCHGAC
Rs
RLIMITAC
Maincharge
prechargeand
VCCspower
paths
(A)
(D)(C)
(B)
CCOMPAC
RSCOMPAC
IDresistor
Thermistor
CPRECH
TAC
TUSB
CCOMPUSB
RSCOMPUSB
CCOMPUSB
RSCOMPUSB
IDresistor
Thermistor
CCV
Mainchargeprecharge
andVCCspowerpaths
Power
Rs
CPRECH
TAC
TUSB
CPRECH
Charger
device
USB
driver
Mainchargeprecharge
andVCCspowerpaths
Power
CCV CCV
Battery
pack
IDresistor
Thermistor
IDresistor
Thermistor
GND
ADIN 1
ADIN 0
VBATS
VBAT
VCCs
CCOMPUSB
RSCOMPUSB
TAC
CPRECH
032-055
TPS65950
www.ti.com SWCS032E–OCTOBER 2008–REVISED JANUARY 2011
• ac constant voltage mode supported (see Figure 8-1A and Figure 8-1B)
• ac charger with current nonlimited (see Figure 8-1D)
A. Schematic that supports ac charge, ac constant voltage mode, and USB charge. With this ac compensation
schematic, constant voltage mode is possible, but only current limited chargers are supported.
B. Schematic that supports only ac charge and ac constant voltage mode. With this ac compensation schematic,
constant voltage mode is possible, but only current limited chargers are supported.
C. Schematic that supports only USB charge.
D. Schematic that supports only ac charge. With this ac compensation schematic, constant voltage mode is not possible,
but current nonlimited chargers are supported.
Figure 8-1. Typical Application Schematics
NOTE
For the component values, see Table 15-1.
8.2.2 In-Rush Current Limitation Schematic
With the typical application schematic supporting constant voltage mode (Figure 8-1 A and B), battery
in-rush current is limited by the charging device. The application schematic can be enhanced to support
in-rush current at the charging device plug to maximum 850 mA as detailed by Figure 8-2. T3, R3, and C3
are connected between VAC and ICTLAC1 and intentionally bring in-rush cucation. The described
enhancement is not required for Figure 8-1 D, where constant voltage mode is not supported.
Figure 8-2 shows a typical application schematic with in-rush current limitation.
Copyright © 2008–2011, Texas Instruments Incorporated Battery Interface 115
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