BQ2118B-KT [TI]
Power Minder⑩ Mini-Board; 电源明德™迷你板
| 型号： | BQ2118B-KT |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | Power Minder⑩ Mini-Board |
| 文件： | 总5页 (文件大小：371K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Preliminary bq2118
Power Minder™ Mini-Board
Features
ä
Complete and compact charge/discharge counter
ä
Combines the bq2018, voltage regulator, sense
resistor, and backup capacitor on a single PCB
ä
ä
Communicates charge/discharge information to a
host with a single-wire interface
Designed for battery pack integration
–
–
Less than 0.5 square inches
Small size allows it to fit in the crevice formed
by two adjacent cells
–
Low operating current
ä
Direct connections for the pack cells and
communications port
A module development kit is also available for the
bq2118. The bq2118B-KT includes one configured mod-
ule and the following:
General Description
The bq2118 Power Minder mini-board provides a com-
plete and compact solution for charge and discharge
counting of all types of battery chemistries, including
NiCd, NiMH, or Li-Ion batteries. Designed for battery
pack integration, the bq2118 incorporates a bq2018
Power Minder IC, supply voltage regulator, sense resistor,
and backup capacitor on a small circuit board. The mod-
ule provides direct connections for the positive and nega-
tive terminals of the series cells in the battery pack, and
can fit in the crevice formed by two adjacent cells. The
bq2118 allows a battery pack to be equipped easily with
accurate charge/discharge counting electronics.
1. An EV2200-18 interface board that allows connec-
tion to the serial port of an AT-compatible com-
puter.
2. Menu-driven software to display charge/discharge
activity and to allow user interface to the bq2118
from any standard Windows 3.1 or 95 PC.
Pin Descriptions
Battery positive/pack positive
BAT+
Unitrode configures the bq2118 based on the informa-
tion requested in Table 1. The configuration defines the
battery chemistry, the number of series cells, and the
charge/discharge current. Figure 1 shows how the mod-
ule connects to the cells.
Battery negative
BAT-
Communications port
Pack negative
HDQ
PACK-
WAKE
RBI
Wakeup output
Register backup input
bq2018 supply voltage
V
CC
5/99
1
bq2118 Preliminary
Battery Pack
Cells
BAT-
PACK-
bq2118 BAT+
PACK-
PACK+
Load
Charger
FG2118MCD.eps
Figure 1. Module Connection Diagram
Table 1. bq2118 Module Configuration
Customer Name: ___________________________________________________________________________
Contact: _________________________________________ Phone: ______________________________
Address: _________________________________________________________________________________
_________________________________________________________________________________
Sales Contact: ____________________________________
Phone: ______________________________
____________________
____________________
____________________
Number of series battery cells
Coke or graphite cell anode
Battery pack capacity (mAh)
Discharge rate into load (4.0A max) Min. ________ Avg. _________ Max. _________
Charge rate (4.0A max) ____________________
FAE Approval:_____________________________________
Date:________________________________
2
Preliminary bq2118
bq2118 Schematic
BAT+
R6
d
s
WAKE
Q1
1K
SST113
2
D2
C5
BZX84C5V6
0.01µF
U1
WAKE
1
2
3
4
8
7
6
5
R2
REG
VCC
VSS
HDQ
SR1
SR2
RBI
BAT-
VCC
100K
C2
VCC
BQ2018
R1
0.05
1W
0.1µF
C1
R3
0.1µF
PACK-
100K
C3
R5
HDQ
0.1µF
100
D3
2
D1
R4
BZX84C5V6
RBI
C4
100K
BAV99
0.1µF
2018typAp.eps
3
bq2118 Preliminary
bq2118 Board
Ordering Information
bq2118 B – XXX
Customer Code:
1
Blank = Sample or Pre-production
KT = Evaluation system
2
XXX = Customer-specific; assigned by Unitrode
Package Option:
B = Board-level product
Device:
Power Minder Mini-Board
Notes:
1. Requires configuration sheet (see Table 1)
2. Example production part number: bq2118B-001
4
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