explain
MC33771C is a smartphone lithium-ion battery controller IC designed for automotive applications such as hybrid electric vehicles (HEVs) and electric vehicles (EVs), as well as industrial applications such as energy storage systems (ESS) and uninterruptible power supply (UPS) systems.
This device performs ADC conversion of differential battery voltage and current, as well as battery coulomb counting and battery temperature measurement. Using a microcontroller interface of an integrated circuit, the serial peripheral interface (SPI) or transformer physical layer (TPL) transmits information to the microcontroller.
Features
• 9.6 V ≤ VPWR ≤ 61.6 V operation, 75 V transient
• 7 to 14 cells management
• Isolated 2.0 Mbps differential communication or 4.0 Mbps SPI
• Addressable on initialization
• Bidirectional transceiver to support up to 63 nodes in daisy chain
• Synchronized cell voltage/current measurement with coulomb count
• Averaging of cell voltage measurements
• Total stack voltage measurement
• Seven GPIO/temperature sensor inputs
• 5.0 V at 5.0 mA reference supply output
• Automatic over/undervoltage and temperature detection routable to fault pin
• Integrated sleep mode over/undervoltage and temperature monitoring
• Onboard 300 mA passive cell balancing with diagnostics
• Hot plug capable
• Detection of internal and external faults, as open lines, shorts, and leakages
• Designed to support ISO 26262, up to ASIL D safety system
• Qualified in compliance with AECQ-100
Applications
• Automotive: 48 V and high-voltage battery packs
• E-bikes, e-scooters
• Energy storage systems
• Uninterruptible power supply (UPS)
