CXLB74134是一款多单元电池组监控和保护IC，包括一个12位ADC（用于电池电压和温度检测）、一个12位ADC（用于充放电电流检测）。CXLB74134为每个电池提供被动平衡功能，最多允许3个连续电池同时放电。CXLB74134有两种ADC操作模式：快速模式和滤波模式。快速模式使转换时间快至1280μs，而滤波模式在频率高于50赫兹时提供优于80分贝的抑制。CXLB74134通过SPI接口与外部控制单元通信。更多的CXLB74134可以串联运行以监测长串电池。CXLB74134集成了完整的保护功能，包括过/欠压、过热/过热、过充放电电流、短路和开路。CXLB74134支持低功耗模式和待机模式，在充放电电流较小的情况下实现低功耗高效率
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[ CXLB74134 ]"
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产品概述 返回TOP
CXLB74134 is a multi-cell battery stack monitoring and protection IC that includes a 12-bit ADC for battery voltage and temperature sense, a 12-bit ADC for charge/discharge current sense. CXLB74134 provides passive balance function for each cell and allows at most 3 consecutive cells being discharged simultaneously. CXLB74134has two ADC operation modes: fast mode and filtering mode. The fast mode enables conversion time as fast as 1280μs, while the filtering mode provides better than 80dB rejection at frequencies above 50Hz. CXLB74134communicates with external control unit via SPI interface. More CXLB74134can operate in series to monitor long string battery. CXLB74134integrates complete protection function including over/under voltage, over/under thermal, over charge/discharge current, short and open wire. CXLB74134supports both low-power mode and standby mode to achieve high efficiency with low power when charge/discharge current is minor.
产品特点 返回TOP
8V≤Input voltage ≤60V operation，75V transient
Monitor 14 series cell battery and support series operation
12-BIT ∆Σ ADC samples battery voltage and accuracy is 5V/212=1.22mV
Provide filtering mode
4 channels thermal sense and accuracy is 5V/212=1.22mV
Battery over/under voltage protection
Battery over/under temperature protection
Open wire connection detection
14 cells passive balance On-chip passive cell balancing switches Provide off-chip passive balancing
12-BIT ∆Σ ADC senses charge/discharge current and accuracy is 400mV/212=97μV
Independent discharge control by the CTLD control pin
Over Charge/Discharge current protection
Charge/Discharge Short protection
Reliable SPI communication (mode3)
3.3V and 5.0V LDO output for external application
External protection N-MOSFETs
Low power consumption
During operation 1mA typ.
During low-power 130μA typ.
During standby 80μA typ.
LQFP-48 package
应用范围 返回TOP
Electric Bicycles, Motorcycles.
Backup Battery Systems
Hybrid Electric Vehicles
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产品封装图 返回TOP
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移动电源解决方案 |
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产品型号 |
充电电流 |
电池电压 |
充电指示器 |
USB |
负载自动识别 |
输出电流 |
封装 |
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(A) |
(V) |
开关 |
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2.5 |
4.2/4.35 |
Y |
Y |
Y |
3.1A |
QFN4X4-24 |
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2 |
4.2/4.35 |
Y |
Y |
Y |
2.4A |
QFN4X4-24 |
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模拟前端电池管理系统 |
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产品型号 |
操作电压 (V) |
最大电 池节数 |
电压ADC精确度 (-40°C~85°C) |
电流ADC精确 度(-40°C~85°C) |
静态电流 |
支持级联 |
封装 |
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10~60 |
14 |
±15mV |
±500uV |
200uA@Low power mode 80uA@Standby mode |
Y |
LQFP48 |
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升压转换器 |
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P/N |
Vin |
Vout |
最大开关电流 |
输出功率 |
可编程输出电流 |
封装 |
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(V) |
(V) |
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2.8~20 |
3~20 |
10 |
18W@VIN=3.2 V30W@VIN=6.4V |
Y |
QFN3X4-15 |
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