Understand Infineon Battery Management System (BMS)
Battery Management System (BMS) is an electronic control circuit that can monitor and adjust the charging and discharging of batteries. The battery characteristics that the system needs to monitor include detecting battery type, voltage, temperature, capacity, state of charge, power consumption, remaining working time, charging cycle, and certain other characteristics. The task of the battery management system is to ensure the effective utilization of the remaining battery power. To avoid battery loss, a Battery Management System (BMS) can protect the battery from deep discharge and overvoltage caused by fast charging and excessive discharge current. For multi-core batteries, the battery management system can balance the battery cells, allowing different battery cells to have the same charging and discharging requirements.
Welcome to learn about Infineon's selection of 6 series of one-stop battery management system solutions, which support the entire BMS design process: N-channel power MOSFET solutions, digital isolator solutions, battery balancing and cell monitoring solutions, gate driver IC solutions, current and isolation monitoring solutions, and anti-counterfeiting solutions.
N-channel power MOSFET
IPT017N10NF2S
IPF016N10NF2S
IPT039N15N5
Toll encapsulated StrongIRFET ™ 2 single N-channel power MOSFET 100 V
features
Wide range of dealer choices
Excellent cost-effectiveness
Suitable for various high and low switching frequencies
Industrial universal packaging
• High rated current
advantage
Multi supplier compatibility
Strong product applicability
• Supports multiple applications
Standard pin layout facilitates direct replacement
Stronger current carrying capacity
digital isolator 
4DIR1401H
DSO-16 Wide body Package Four Channel Digital Isolator 4DIR1401H
features
• Data transfer rate up to 40 Mbps
• 2.7 V - 6.5 V
VISO for 5700 VRMS
Low current consumption 6.4 mA @ 1 Mbps
CMTI: 100 kV/µ s (minimum)
Working temperature: -40 to 125 ° C
advantage
Strong resistance to system noise
• Higher system efficiency
Reliable high default output state
Simplify system authentication
Easy device replacement
• Available sources of goods to choose from
Battery balancing and battery cell monitoring
TLE9012
Integrated circuit for lithium-ion battery monitoring and balancing system
executive summary
• Can monitor the voltage of up to 12 series connected battery cells
• Supports communication with up to 38 devices
• Supports hot swapping
temperature measurement
5 temperature measurement channels for connecting external NTC
Internal temperature measurement and monitoring
Voltage measurement
Perform 16 bit high-resolution ADC measurements on each battery cell
High precision measurement for calculating SoC (charging state) and SoH (health state)
Temperature compensation measurement
• Built in noise filtering
• Optional measurement bit length
Balance
Built in balance switch, allowing communication interface between battery blocks (IBCB) for balanced current up to 150 mA
Durable differential serial interface for communication between battery blocks
High speed communication speed up to 2 Mbps
Power balanced communication scheme
Green products (compliant with RoHS regulations)
Certified by AEC-Q100
Complies with ISO-26262 standard and supports ASIL-D BMS security applications
features
Security features
• Two independent internal voltage references
Block voltage measurement based on different ADCs
• configurable analog OV/UV comparator
End-to-end CRC secure communication
CRC Security Configuration Register
Internal open circuit load detection
Communication emergency mode
advantage
• Best in class voltage measurement accuracy: Reliable and accurate monitoring of battery cells, capable of achieving high-precision SoC and SoH
• High performance: The communication interface supports scalable battery topology with or without electrical isolation;
Peak stability: Infineon technology ensures optimal performance under noisy conditions
• Lowest system cost: Small package (TQFP-48) and high functional integration, achieving streamlined external BOM
Gate driver IC
2ED4820-EM
48 V intelligent high-voltage side MOSFET gate driver with SPI, suitable for automotive applications
features
Extended power supply voltage range: 20-70 V
Two independent high-voltage side gate driver outputs, pulled down by 1 A and pulled up by 0.3 A, for quick shutdown/opening
Low power current in sleep mode IBAT_Q<5 µ A
• Device control, configuration, and diagnosis through SPI
• Can be configured with overcurrent/short circuit protection
• configurable drain source overvoltage protection
• Gate Under Voltage Lockout (VGS)
Grounding detection
• Certified by AEC-Q100
• Lead free, halogen-free, RoHS compliant
• Supports back-to-back MOSFETs
SPI interface
Current detection
advantage
• Supports back-to-back MOSFET topology (common drain or common source)
• SAFESTATEN input, used to trigger safe state mode in case of µ C failure
A bidirectional high-voltage or low-voltage analog current detection interface with configurable gain to optimize power loss
Can withstand up to 105 V Vbat voltage and Vsource voltage relative to -90 V Vbat
Current and isolation monitoring
TLI4971
Isolation monitoring is crucial for high-voltage batteries. In conjunction with short-circuit and overload current measurement, the system will continuously measure the voltage of the high-voltage DC+/- line between the battery pack casing and chassis. In addition, high-performance current sensors can also achieve more accurate current measurement in battery monitoring, such as Coulomb counting, state of charge, discharge depth calculation, or advanced impedance spectroscopy technology for battery diagnosis.
Indicator parameters
| Parametrics | TLI4971-A120T5-E0001 |
| Accuracy | 2% |
| Current range | 120A |
| Diagnosis | OCD 1, OCD 2, OV, UV, diagnosis mode |
| Interfaces | Analog |
| IsolationUIORM | 1150 V |
| Supply Voltage | 3.1-3.5 |
Anti counterfeiting solution
OPTIGA™ Authenticate S
Consumer electronic devices, household appliances, and industrial machinery have long faced the risk of counterfeit spare parts and accessories. Counterfeit and inferior products can endanger device functionality and user safety, thereby damaging brand value. OPTIGA? Authenticate S can solve this problem. It is a mature, hardware based turnkey security solution that can be used to address any device authentication challenge. This anti-counterfeiting solution has unprecedented configuration flexibility and provides a series of enhanced security features.
features
4 authentication modes (one-way, two-way, host binding, and host support)
4 lifecycle counters with independent kill termination structures
• 3 lockable NVM specifications (1 Kb, 2 Kb, 5 Kb)
• 3 temperature range options (standard range -40 ° C to 85 ° C; extended range -40 ° C to 105 ° C; special range -40 ° C to 120 ° C)
Two ECC 163 bit key pairs and 193 bit ODC
• 2 serial communication options (on-chip SWI&I2C+GPO)
Host code software with new OS library
1.5 x 1.5 x 0.38 mm PG-TSNP-6-12 package
Asymmetric encryption provides a secure unique identification code for each chip
Infineon's proprietary reverse engineering (PRE) protection features
Message verification code provides bidirectional authentication
• Low voltage differential voltage regulator (LDO) without capacitor
advantage
Protect manufacturers and consumers from damage caused by counterfeit and inferior products
More thoughtful customer service, such as timely reminders to replace parts
No need to invest in security expertise
Easy to implement, providing comprehensive system integration support, including embedded software, host software, and PSoC based ™ Complete reference board for 6, demonstration software, and complete technical documentation
The compact and durable TSNP SMD package has been optimized for small devices, allowing for free design of even very compact products
