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NXP - Function Safety MCU, Function Safety AFE, Function Safety SBC
NXP provide turn key on BMS solution (MCU+SBC+AFE)
Features
• Supply voltage:
9.6 V ≤ VPWR ≤ 61.6 V operation, 70 V transient
• Advanced voltage and temperature measurement:
14 cell voltage measurement channels
Total stack voltage measurement
7 ADC/GPIO/temperature sensor inputs
• Advanced current measurement:
Integrated current sensor with PGA
±0.5% accuracy from milliamps to kiloamps
Coulomb counter
• Onboard passive balancing
Onboard 300mA low rdson passive cell balancing MOSFETs
Balancing in sleep mode
Programmable balancing timer for each MOSFET
• Isolated daisy chain or SPI communication:
2.0 Mbps , 2 wire twisted pair differential, isolated
Addressable on initialization
• Diagnostics, functional safety and robustness:
OV/UV, OT/UT, OC fault verification
Sleep mode OV/UV, OT/UT monitoring
Single chip ASIL C capable
Hot plug capable and AEC Q-100
Application
• 48V Start/Stop. HEV/EV BMS
Product Benefits:
• 300mA passive cell balancing , RDS(ON)=0.5ohm, ADC sampling precision<2mV, ASiL-D
Specifications:
• Support ISO26262 function safety, AFE single chip ASIL-C, master MCU ASIL-D.
• 2 Mbps transformer coupled isolation or 4 Mbps SPI communication speed.
• 2 mV high measurement accuracy.
• Single chip 48V, multi-chip >800V, scalable capable chipset.
• Onboard 300 mA passive cell balancing
• Synchronized cell voltage/current measurement, robust against hot plug
Block Diagram:
Downloads
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