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| BQ40Z60_16 Datasheet, PDF (30/47 Pages) Texas Instruments – Programmable Battery Management Unit | |||
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bq40z60
SLUSAW3C â DECEMBER 2014 â REVISED JULY 2015
10 Application and Implementation
www.ti.com
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TIâs customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
10.1 Application Information
The bq40z60 is a monolithic charger and gas gauge solution for multi-cell battery packs. By integrating these
devices, software control can be handed off from the host microcontroller to the gas gauge controller, providing
for potential energy savings that correlate to runtime.
10.2 Typical Applications
FUSE
0.1 µF 0.1 µF
CHG FET
DSG FET
ACFET
Q5
10M
Q2
Q1
Q3
5.1K
5.1K
5 .1K
10K
100k
2
2.2 µF
2.2 µH 10 mΩ
SYSTEM LOAD
100
1K
1K
bq294700
1 VDD OUT 8
2 V4
CD 7
3 V3 VSS 6
4 V2
V1 5
1K
5.1K
0.1 µF
1K
10 Ω
BAS 16
100
2.2 µF
100
0.1 µF
100
0.1 µF
100
0.1 µF
0.1 µF
100
0.1 µF
100
0.1 µF
0.1 µF
32 31 30 29 28 27 26 25
CHG
1 BAT
LODRV
PGND 24
2 PBI
REGN 23
3 VC4
VCC 22
4 VC3
AFEFUSE 21
1 .5 µF
5 .1K
Q4
1Ω
1 µF
5 VC2
HSRP 20
6 VC1
HSRN 19
7 SRN
VFB 18
8 SRP
SMBC 17
VSS
SMBD
9 10 11 12 13 14 15 16
100
0.1 µF
0.1 µF
100
0.1 µF
100
100
100
1k
1-ch to 4-ch NTC
100
4x
MM3 Z5V 6C
22 pF
R1
R2
PGND
SMBC
SMBD
PACK+
SYS PRES
ALERT
PACK â
Note:
In 2 s to 3 s: bq2945xy is an option for second level protection.
The feedback resistor to VFB from charging output will have different values based on the number of series cells configured for the charging the pack.
4-s Cells,R1 = 332k, R2 = 26.1k
3-s Cells, R1 = 332k, R2 35.63k
2-s Cells, R1 = 332k, R2 = 56.13k
The 0.1-µF capacitors at the SRP and SRN inputs may NOT be required based on the applications, specifically, load conditions and the transition of load profiles.
Figure 8. Typical Application Schematic
NOTE
The feedback resistor to VFB from charging output will have different values based on the
number of series cells configured for charging the pack.
30
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Copyright © 2014â2015, Texas Instruments Incorporated
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