Texas Instruments EMB1432Q
The EMB1432Q Battery Stack Module Analog Front End is a high voltage analog interface designed to monitor a lithium battery stack. It is able to select and level shift the voltage across any of 14 stacked batteries and 2 low voltage auxiliary inputs, multiplexing the signals to an output pin. The multiplexer output is set by writing to an internal register using the SPI™ protocol or by directly addressing 4 digital pins.| Part No. | EMB1432Q |
|---|---|
| Datasheet | EMB1432Q Download |
| Manufacturer |  Texas Instruments |
| Description | 60V 14-Channel Battery Stack Module Analog Front End |
| Buy | Stock & Price |
FEATURES
●1 Positive Supply Voltage 4.75 V to 5.5 V● Negative Supply Voltage −5.5 V to −4 V
● Positive Supply Current 750 µA (max)
● VBATT = (VSENSE(N) − VSENSE(N−1)) 0.5 V to 4.6 V
● VSENSE(14) 60 V (max)
● Input Sense Current 6 µA (max)
● Input Referred Offset Voltage ±1 mV (Max)
● Digital Interface Supply 2.7 V to 5.5 V
● Gain 1
● Gain Error 0.05% (max)
● Ambient Operating Temperature −40°C to 125°C
● AEC Q100 Grade 1 2
APPLICATIONS
● Li-Ion Battery Management Systems● Hybrid and Electric Vehicles
● Grid Storage
● 48 V Systems
● UPS Typical Application VIO Flying Cap 10 nF CHPnSD CHP DGND GND EMB1432Q CHM CHPVP CHPVM VM VP +5V 1 2F 0.1 2F 1 2F 0.1 2F 100 0.1 2F +5V 1 2F 0.1 2F + + + 3
DESCRIPTION
The voltage across each battery can range from –2 V to 5.5 V without damaging the AFE, with the top cell positive pin reaching 60 V. The SENSE(N) input impedance (when the Nth battery is selected) is 1 MΩ typ, and the current drawn from SENSE(N-1) is 2 µA typ. When not selected or in shutdown mode, the current at any sense input drops to less than 1 µA.
