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BQ2150HMODULE

更新时间: 2024-11-07 01:22:39
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德州仪器 - TI 仪表
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5页 450K
描述
Li-Ion Power Gauge Module

BQ2150HMODULE 数据手册

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Preliminary bq2150H  
Li-Ion Power Gauge™ Module  
Features  
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Complete bq2050H Power Gauge solution for Li-Ion  
battery packs  
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Battery information available over a single-wire  
(HDQ) bidirectional serial port  
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Control signals to enhance pack protection  
Battery state-of-charge monitoring for 2- to 5-cell  
series applications  
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On-board regulator allows direct connection to the  
battery  
Lversion includes push-button activated LEDs to  
display state-of-charge information  
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Nominal capacity pre-configured  
number of series cells, the nominal battery pack capac-  
ity, and the Li-Ion battery type (coke or graphite anode).  
Figure 1 shows how the module connects to the cells.  
Compact size for battery pack integration  
General Description  
A module development kit is also available for the  
bq2150. The bq2150HB-KT or the bq2150HLB-KT in-  
cludes one configured module and the following:  
The bq2150H Power Gauge Module provides a complete  
and compact solution for capacity monitoring of Li-Ion bat-  
tery packs. Designed for battery pack integration, the  
bq2150 incorporates a bq2150H Gas Gauge IC, a current  
sense resistor, and all other components necessary to accu-  
rately monitor and display the capacity of 2 to 5 series  
cells.  
1) An EV2200-50H interface board that allows con-  
nection 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 bq2150H  
from any standard Windows 3.1x or 95 PC.  
The bq2150L includes five LEDs to display remaining ca-  
pacity in 20% increments of the learned capacity. The  
LEDs are activated with the onboard push-button switch.  
Pin Descriptions  
Contacts are provided on the bq2150H for direct connec-  
tion to the battery stack (BAT+, BAT-) and the serial  
communications port (HDQ). The RBI input provides  
backup power to the bq2150H in the event that the cells  
are removed or the battery is turned off. The bq2150H  
has a 1µF capacitor onboard connected to RBI to supply  
backup power for about an hour. In battery packs that  
use high-side FETs to control the charge/discharge of  
the Li-Ion cells, the RBI input can be wired to a single  
cell to provide prolonged data retention times. The SD  
input allows an external signal (active low) to turn the  
bq2050H IC off to minimize internal current consump-  
tion of the battery pack and maximize storage life of the  
pack in the system. When turned off, the bq2150H is  
non-functional, and the RBI power source maintains  
register information. Please refer to the bq2050H data  
sheet for the specifics on the operation of the Gas Gauge.  
HDQ/Serial Communications port  
PSTAT/Protector status input  
BAT+/Battery positive/pack positive  
SD/Shutdown  
P1  
P2  
P3  
P4  
P5  
P6  
P7  
P8  
P9  
RBI/Register backup input  
GND/Ground  
PACK-/Pack negative  
BAT-/Battery negative  
CFC/Charge FET control output  
Unitrode configures the bq2150H based on the informa-  
tion requested in Table 1. The configuration defines the  
10/97  
1

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