ATA6870-PLPW

更新时间： 2024-11-07 06:38:31

品牌	Logo	应用领域
爱特美尔 - ATMEL		电源电路电池
页数	文件大小	规格书
55页	2201K
描述
Li-Ion, NiMH Battery Measuring, Charge Balancing and Power-supply Circuit

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ATA6870-PLPW 数据手册

Features

• 12-bit Battery-cell Voltage Measurement

• Simultaneous Battery Cells Measurement in Parallel

• Cell Temperature Measurement

• Charge Balancing Capability

– Parallel Balancing of Cells Possible

• Integrated Power Supply for MCU

• Undervoltage Detection

• Less than 10 µA Standby Current

• Low Cell Imbalance Current (< 10 µA)

• Hot Plug-in Capable

• Interrupt Timer for Cycling MCU Wake-ups

• Cost-efficient Solution Due to Cost-optimized 30V CMOS Technology

• Reliable Communication between Stacked ICs Due to Level Shifters with Current

Sources and Checksum Monitoring of Data

• Daisy-chainable

Li-Ion, NiMH

Battery

Measuring,

Charge

– Each IC Monitors up to 6 Battery Cells

– 16 ICs (96 Cells) per String

Balancing and

Power-supply

Circuit

– No Limit on Number of Strings

• Package QFN48 7 mm × 7 mm

Applications

• Battery Measurement, Supply and Monitoring IC for Li-ion and NiMH Battery Systems

in Electric (EV) and Hybrid Electrical (HEV) Vehicles

ATA6870

Benefits

Preliminary

• Highest Safety Level for Li-ion Battery Systems in Combination with ATA6871

• Cost Reduction Due to Integrated Measurement Circuit and High Voltage Power-supply

1. Description

The ATA6870 is a measurement and monitoring circuit designed for Li-ion and NiMH

multicell battery stacks in hybrid electrical vehicles.

The ATA6870 monitors the battery-cell voltage and the battery-cell temperature with a

12-bit ADC.

The circuit also provides charge-balancing capability for each battery-cell.

In addition, a linear regulator is integrated to supply a microcontroller or other external

components. Reliable communication between stacked ICs is achieved by level-shift-

ers with current sources. The ATA6870 can be connected to three, four, five or six

battery-cells. Up to 16 circuits (96 cells) can be cascaded in one string. The number of

strings is not limited.

9116B–AUTO–10/09

12 3 4 5 6 7...55

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