NXP MC33772C 6-Channel Li-ion Battery Cell Controller IC
The MC33772C is a Li-Ion battery cell controller IC designed for automotive and industrial applications such as HEV, EV, ESS, UPS systems.
Featuring:
- ADC conversions on the differential cell voltages with averaging up to 256 samples and currents as well as coulomb counting and temperature measurements
- Embedded balancing transistors and diagnostics to simplify applications
- Support standard SPI and transformer isolated daisy chain communication (with MC33664) to an MCU for processing and control up to 63 nodes in one daisy chain
- Loopback support for one daisy chain
MC33772C supports ISO26262 with single chip ASIL C and up to ASIL D functional safety capability. With comprehensive integrated diagnostics, it enables low BOM & development cost for BMS with high functional safety target.
MC33772C is pin to pin compatible with MC33772B and compatible with MC3366X.
MC33772C Block Diagram
FeaturesHigh-performance integrated functions Operating voltage:
Comprehensive integrated functional safety features
| Target ApplicationsAutomotive:
Industrial:
|
MC33772B and MC33772C Differences
| Parameter | MC33772B | MC33772C |
| Voltage Channels | 3 – 6 (single meas.) | 3 – 6 (averaging from 1-256) |
| Supply Vpwr Range (Max Transient) | 6 V..30 V (40 V) | 6 V..30 V (40 V) |
| Cell Terminal Input Voltage Range | -0.3V to 5V | -0.3V to 5V |
| Typical Measurement Error | ± 0.8 mV | ± 0.8 mV |
| Max Total Measurement Error (TME) for Cell Terminal Voltage (After aging: MLS3 & 1000h HTOL) | ± 3.9 mV(Vpwr=9.6~61.6V, Vcell=1.5~4.3V, -40~60°C) | ± 3.9 mV(Vpwr=9.6~61.6V, Vcell=1.5~4.3V, -40~60°C) |
| Functional Safety | Single-chip ASIL C ASIL D Compliance at system level | Single-chip ASIL C ASIL D Compliance at system level |
| Isolated communication Speed | 2 Mbps | 2 Mbps |
| Communication Isolation | Inductive | Inductive, Capacitive (centralized systems) |
| Max Nodes per Daisy Chain | 15 | 63 |
| Node to node comm. Delay | 0 | < 950 ns |
| Loopback support with open line tolerance | No | Yes |
| 4Mbps SPI communication | Yes | Yes |
| CRC Bit | 8 | 8 |
| Comms bit | 40 | 48 |
| Integrated Balancing | <300 mA | <300 mA |
| Balancing sleep mode | Yes | Yes |
| GPIO / Analog measurement inputs | 7 | 7 |
| Current Channels | 1 | 1 |
| Coulomb counter | 1 | 1 |
| Package | 48-pin LQFP-EP (-40~105 °C) | 48-pin LQFP-EP (-40~105 °C) |
| BOM cost | 1(reference) | 0.75 |
Development Tools
The MC33772C development kits provide an evaluation platform for designing Battery applications using the MC33772C Li-Ion battery cell controller IC
Easy to Use tools: Fast Evaluation of Device performance
The FRDM33772CSPEVB Evaluation Board (EVB) features the MC33772C, a 6-channel battery cell controller for automotive and industrial Li-ion battery applications. It supports cell voltage measurement, passive cell balancing and GPIOs.
The kit is designed to support customer development and evaluation. The device can be connected to NXP 6-cell battery emulator or a customer Li-ion battery module with 3~6 cells in series. The battery cell information is transferred to the microcontroller unit (MCU) through an SPI interface
The KIT33772CTPLEVB Evaluation Board (EVB) features the MC33772C, a 6-channel battery cell controller for automotive and industrial Li-ion battery applications. It supports cell voltage measurement, passive cell balancing and GPIOs.
The kit is designed to support customer development and evaluation. The device can be connected to NXP 6-cell battery emulator or a customer Li-ion battery module with 3~6 cells in series. Up to 63 KIT33772CTPLEVB can be connected within a daisy chain. The battery cell information is transferred to the microcontroller unit (MCU) through an isolated differential communication bus using FRDMDUAL33664EVB
Evaluation Kit Ecosystem – TPL Communication
Evaluation Kit Ecosystem – SPI Communication
